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	diff --git a/sql/swh-func.sql b/sql/swh-func.sql
	index 59f5b61e..8621e67c 100644
	--- a/sql/swh-func.sql
	+++ b/sql/swh-func.sql
	@@ -1,2050 +1,2055 @@
	-- create a temporary table called tmp_TBLNAME, mimicking existing table
	-- TBLNAME
	--
	-- Args:
	-- tblname: name of the table to mimick
	create or replace function swh_mktemp(tblname regclass)
	returns void
	language plpgsql
	as $$
	begin
	execute format('
	create temporary table tmp_%1$I
	(like %1$I including defaults)
	on commit drop;
	alter table tmp_%1$I drop column if exists object_id;
	', tblname);
	return;
	end
	$$;

	-- create a temporary table for directory entries called tmp_TBLNAME,
	-- mimicking existing table TBLNAME with an extra dir_id (sha1_git)
	-- column, and dropping the id column.
	--
	-- This is used to create the tmp_directory_entry_<foo> tables.
	--
	-- Args:
	-- tblname: name of the table to mimick
	create or replace function swh_mktemp_dir_entry(tblname regclass)
	returns void
	language plpgsql
	as $$
	begin
	execute format('
	create temporary table tmp_%1$I
	(like %1$I including defaults, dir_id sha1_git)
	on commit drop;
	alter table tmp_%1$I drop column id;
	', tblname);
	return;
	end
	$$;


	-- create a temporary table for revisions called tmp_revisions,
	-- mimicking existing table revision, replacing the foreign keys to
	-- people with an email and name field
	--
	create or replace function swh_mktemp_revision()
	returns void
	language sql
	as $$
	create temporary table tmp_revision (
	like revision including defaults,
	author_fullname bytea,
	author_name bytea,
	author_email bytea,
	committer_fullname bytea,
	committer_name bytea,
	committer_email bytea
	) on commit drop;
	alter table tmp_revision drop column author;
	alter table tmp_revision drop column committer;
	alter table tmp_revision drop column object_id;
	$$;


	-- create a temporary table for releases called tmp_release,
	-- mimicking existing table release, replacing the foreign keys to
	-- people with an email and name field
	--
	create or replace function swh_mktemp_release()
	returns void
	language sql
	as $$
	create temporary table tmp_release (
	like release including defaults,
	author_fullname bytea,
	author_name bytea,
	author_email bytea
	) on commit drop;
	alter table tmp_release drop column author;
	alter table tmp_release drop column object_id;
	$$;

	-- create a temporary table with a single "bytea" column for fast object lookup.
	create or replace function swh_mktemp_bytea()
	returns void
	language sql
	as $$
	create temporary table tmp_bytea (
	id bytea
	) on commit drop;
	$$;

	-- create a temporary table for occurrence_history
	create or replace function swh_mktemp_occurrence_history()
	returns void
	language sql
	as $$
	create temporary table tmp_occurrence_history(
	like occurrence_history including defaults,
	visit bigint not null
	) on commit drop;
	alter table tmp_occurrence_history
	drop column visits,
	drop column object_id;
	$$;

	-- create a temporary table for entity_history, sans id
	create or replace function swh_mktemp_entity_history()
	returns void
	language sql
	as $$
	create temporary table tmp_entity_history (
	like entity_history including defaults) on commit drop;
	alter table tmp_entity_history drop column id;
	$$;

	-- create a temporary table for entities called tmp_entity_lister,
	-- with only the columns necessary for retrieving the uuid of a listed
	-- entity.
	create or replace function swh_mktemp_entity_lister()
	returns void
	language sql
	as $$
	create temporary table tmp_entity_lister (
	id bigint,
	lister_metadata jsonb
	) on commit drop;
	$$;


	-- a content signature is a set of cryptographic checksums that we use to
	-- uniquely identify content, for the purpose of verifying if we already have
	-- some content or not during content injection
	create type content_signature as (
	sha1 sha1,
	sha1_git sha1_git,
	sha256 sha256
	);


	-- check which entries of tmp_content are missing from content
	--
	-- operates in bulk: 0. swh_mktemp(content), 1. COPY to tmp_content,
	-- 2. call this function
	create or replace function swh_content_missing()
	returns setof content_signature
	language plpgsql
	as $$
	begin
	-- This query is critical for (single-algorithm) hash collision detection,
	-- so we cannot rely only on the fact that a single hash (e.g., sha1) is
	-- missing from the table content to conclude that a given content is
	-- missing. Ideally, we would want to (try to) add to content all entries
	-- in tmp_content that, when considering all columns together, are missing
	-- from content.
	--
	-- But doing that naively would require a compound index on all checksum
	-- columns; that index would not be significantly smaller than the content
	-- table itself, and therefore won't be used. Therefore we union together
	-- all contents that differ on at least one column from what is already
	-- available. If there is a collision on some (but not all) columns, the
	-- relevant tmp_content entry will be included in the set of content to be
	-- added, causing a downstream violation of unicity constraint.
	return query
	(select sha1, sha1_git, sha256 from tmp_content as tmp
	where not exists
	(select 1 from content as c where c.sha1 = tmp.sha1))
	union
	(select sha1, sha1_git, sha256 from tmp_content as tmp
	where not exists
	(select 1 from content as c where c.sha1_git = tmp.sha1_git))
	union
	(select sha1, sha1_git, sha256 from tmp_content as tmp
	where not exists
	(select 1 from content as c where c.sha256 = tmp.sha256));
	return;
	end
	$$;

	-- check which entries of tmp_content_sha1 are missing from content
	--
	-- operates in bulk: 0. swh_mktemp_content_sha1(), 1. COPY to tmp_content_sha1,
	-- 2. call this function
	create or replace function swh_content_missing_per_sha1()
	returns setof sha1
	language plpgsql
	as $$
	begin
	return query
	(select id::sha1
	from tmp_bytea as tmp
	where not exists
	(select 1 from content as c where c.sha1=tmp.id));
	end
	$$;


	-- check which entries of tmp_skipped_content are missing from skipped_content
	--
	-- operates in bulk: 0. swh_mktemp(skipped_content), 1. COPY to tmp_skipped_content,
	-- 2. call this function
	create or replace function swh_skipped_content_missing()
	returns setof content_signature
	language plpgsql
	as $$
	begin
	return query
	select sha1, sha1_git, sha256 from tmp_skipped_content t
	where not exists
	(select 1 from skipped_content s where
	s.sha1 is not distinct from t.sha1 and
	s.sha1_git is not distinct from t.sha1_git and
	s.sha256 is not distinct from t.sha256);
	return;
	end
	$$;


	-- Look up content based on one or several different checksums. Return all
	-- content information if the content is found; a NULL row otherwise.
	--
	-- At least one checksum should be not NULL. If several are not NULL, they will
	-- be AND-ed together in the lookup query.
	--
	-- Note: this function is meant to be used to look up individual contents
	-- (e.g., for the web app), for batch lookup of missing content (e.g., to be
	-- added) see swh_content_missing
	create or replace function swh_content_find(
	sha1 sha1 default NULL,
	sha1_git sha1_git default NULL,
	sha256 sha256 default NULL
	)
	returns content
	language plpgsql
	as $$
	declare
	con content;
	filters text[] := array[] :: text[]; -- AND-clauses used to filter content
	q text;
	begin
	if sha1 is not null then
	filters := filters \|\| format('sha1 = %L', sha1);
	end if;
	if sha1_git is not null then
	filters := filters \|\| format('sha1_git = %L', sha1_git);
	end if;
	if sha256 is not null then
	filters := filters \|\| format('sha256 = %L', sha256);
	end if;

	if cardinality(filters) = 0 then
	return null;
	else
	q = format('select * from content where %s',
	array_to_string(filters, ' and '));
	execute q into con;
	return con;
	end if;
	end
	$$;


	-- add tmp_content entries to content, skipping duplicates
	--
	-- operates in bulk: 0. swh_mktemp(content), 1. COPY to tmp_content,
	-- 2. call this function
	create or replace function swh_content_add()
	returns void
	language plpgsql
	as $$
	begin
	insert into content (sha1, sha1_git, sha256, length, status)
	select distinct sha1, sha1_git, sha256, length, status
	from tmp_content
	where (sha1, sha1_git, sha256) in
	(select * from swh_content_missing());
	-- TODO XXX use postgres 9.5 "UPSERT" support here, when available.
	-- Specifically, using "INSERT .. ON CONFLICT IGNORE" we can avoid
	-- the extra swh_content_missing() query here.
	return;
	end
	$$;


	-- add tmp_skipped_content entries to skipped_content, skipping duplicates
	--
	-- operates in bulk: 0. swh_mktemp(skipped_content), 1. COPY to tmp_skipped_content,
	-- 2. call this function
	create or replace function swh_skipped_content_add()
	returns void
	language plpgsql
	as $$
	begin
	insert into skipped_content (sha1, sha1_git, sha256, length, status, reason, origin)
	select distinct sha1, sha1_git, sha256, length, status, reason, origin
	from tmp_skipped_content
	where (coalesce(sha1, ''), coalesce(sha1_git, ''), coalesce(sha256, '')) in
	(select coalesce(sha1, ''), coalesce(sha1_git, ''), coalesce(sha256, '') from swh_skipped_content_missing());
	-- TODO XXX use postgres 9.5 "UPSERT" support here, when available.
	-- Specifically, using "INSERT .. ON CONFLICT IGNORE" we can avoid
	-- the extra swh_content_missing() query here.
	return;
	end
	$$;


	-- check which entries of tmp_directory are missing from directory
	--
	-- operates in bulk: 0. swh_mktemp(directory), 1. COPY to tmp_directory,
	-- 2. call this function
	create or replace function swh_directory_missing()
	returns setof sha1_git
	language plpgsql
	as $$
	begin
	return query
	select id from tmp_directory t
	where not exists (
	select 1 from directory d
	where d.id = t.id);
	return;
	end
	$$;


	-- Retrieve information on directory from temporary table
	create or replace function swh_directory_get()
	returns setof directory
	language plpgsql
	as $$
	begin
	return query
	select d.*
	from tmp_directory t
	inner join directory d on t.id = d.id;
	return;
	end
	$$;


	create type directory_entry_type as enum('file', 'dir', 'rev');


	-- Add tmp_directory_entry_* entries to directory_entry_* and directory,
	-- skipping duplicates in directory_entry_*. This is a generic function that
	-- works on all kind of directory entries.
	--
	-- operates in bulk: 0. swh_mktemp_dir_entry('directory_entry_*'), 1 COPY to
	-- tmp_directory_entry_*, 2. call this function
	--
	-- Assumption: this function is used in the same transaction that inserts the
	-- context directory in table "directory".
	create or replace function swh_directory_entry_add(typ directory_entry_type)
	returns void
	language plpgsql
	as $$
	begin
	execute format('
	insert into directory_entry_%1$s (target, name, perms)
	select distinct t.target, t.name, t.perms
	from tmp_directory_entry_%1$s t
	where not exists (
	select 1
	from directory_entry_%1$s i
	where t.target = i.target and t.name = i.name and t.perms = i.perms)
	', typ);

	execute format('
	with new_entries as (
	select t.dir_id, array_agg(i.id) as entries
	from tmp_directory_entry_%1$s t
	inner join directory_entry_%1$s i
	using (target, name, perms)
	group by t.dir_id
	)
	update tmp_directory as d
	set %1$s_entries = new_entries.entries
	from new_entries
	where d.id = new_entries.dir_id
	', typ);

	return;
	end
	$$;

	-- Insert the data from tmp_directory, tmp_directory_entry_file,
	-- tmp_directory_entry_dir, tmp_directory_entry_rev into their final
	-- tables.
	--
	-- Prerequisites:
	-- directory ids in tmp_directory
	-- entries in tmp_directory_entry_{file,dir,rev}
	--
	create or replace function swh_directory_add()
	returns void
	language plpgsql
	as $$
	begin
	perform swh_directory_entry_add('file');
	perform swh_directory_entry_add('dir');
	perform swh_directory_entry_add('rev');

	insert into directory
	select * from tmp_directory t
	where not exists (
	select 1 from directory d
	where d.id = t.id);

	return;
	end
	$$;

	-- a directory listing entry with all the metadata
	--
	-- can be used to list a directory, and retrieve all the data in one go.
	create type directory_entry as
	(
	dir_id sha1_git, -- id of the parent directory
	type directory_entry_type, -- type of entry
	target sha1_git, -- id of target
	name unix_path, -- path name, relative to containing dir
	perms file_perms, -- unix-like permissions
	status content_status, -- visible or absent
	sha1 sha1, -- content if sha1 if type is not dir
	sha1_git sha1_git, -- content's sha1 git if type is not dir
	sha256 sha256 -- content's sha256 if type is not dir
	);


	-- List a single level of directory walked_dir_id
	-- FIXME: order by name is not correct. For git, we need to order by
	-- lexicographic order but as if a trailing / is present in directory
	-- name
	create or replace function swh_directory_walk_one(walked_dir_id sha1_git)
	returns setof directory_entry
	language sql
	stable
	as $$
	with dir as (
	select id as dir_id, dir_entries, file_entries, rev_entries
	from directory
	where id = walked_dir_id),
	ls_d as (select dir_id, unnest(dir_entries) as entry_id from dir),
	ls_f as (select dir_id, unnest(file_entries) as entry_id from dir),
	ls_r as (select dir_id, unnest(rev_entries) as entry_id from dir)
	(select dir_id, 'dir'::directory_entry_type as type,
	e.target, e.name, e.perms, NULL::content_status,
	NULL::sha1, NULL::sha1_git, NULL::sha256
	from ls_d
	left join directory_entry_dir e on ls_d.entry_id = e.id)
	union
	(select dir_id, 'file'::directory_entry_type as type,
	e.target, e.name, e.perms, c.status,
	c.sha1, c.sha1_git, c.sha256
	from ls_f
	left join directory_entry_file e on ls_f.entry_id = e.id
	left join content c on e.target = c.sha1_git)
	union
	(select dir_id, 'rev'::directory_entry_type as type,
	e.target, e.name, e.perms, NULL::content_status,
	NULL::sha1, NULL::sha1_git, NULL::sha256
	from ls_r
	left join directory_entry_rev e on ls_r.entry_id = e.id)
	order by name;
	$$;

	-- List recursively the revision directory arborescence
	create or replace function swh_directory_walk(walked_dir_id sha1_git)
	returns setof directory_entry
	language sql
	stable
	as $$
	with recursive entries as (
	select dir_id, type, target, name, perms, status, sha1, sha1_git,
	sha256
	from swh_directory_walk_one(walked_dir_id)
	union all
	select dir_id, type, target, (dirname \|\| '/' \|\| name)::unix_path as name,
	perms, status, sha1, sha1_git, sha256
	from (select (swh_directory_walk_one(dirs.target)).*, dirs.name as dirname
	from (select target, name from entries where type = 'dir') as dirs) as with_parent
	)
	select dir_id, type, target, name, perms, status, sha1, sha1_git, sha256
	from entries
	$$;

	create or replace function swh_revision_walk(revision_id sha1_git)
	returns setof directory_entry
	language sql
	stable
	as $$
	select dir_id, type, target, name, perms, status, sha1, sha1_git, sha256
	from swh_directory_walk((select directory from revision where id=revision_id))
	$$;

	COMMENT ON FUNCTION swh_revision_walk(sha1_git) IS 'Recursively list the revision targeted directory arborescence';


	-- Find a directory entry by its path
	create or replace function swh_find_directory_entry_by_path(
	walked_dir_id sha1_git,
	dir_or_content_path bytea[])
	returns directory_entry
	language plpgsql
	as $$
	declare
	end_index integer;
	paths bytea default '';
	path bytea;
	res bytea[];
	r record;
	begin
	end_index := array_upper(dir_or_content_path, 1);
	res[1] := walked_dir_id;

	for i in 1..end_index
	loop
	path := dir_or_content_path[i];
	-- concatenate path for patching the name in the result record (if we found it)
	if i = 1 then
	paths = path;
	else
	paths := paths \|\| '/' \|\| path; -- concatenate paths
	end if;

	if i <> end_index then
	select *
	from swh_directory_walk_one(res[i] :: sha1_git)
	where name=path
	and type = 'dir'
	limit 1 into r;
	else
	select *
	from swh_directory_walk_one(res[i] :: sha1_git)
	where name=path
	limit 1 into r;
	end if;

	-- find the path
	if r is null then
	return null;
	else
	-- store the next dir to lookup the next local path from
	res[i+1] := r.target;
	end if;
	end loop;

	-- at this moment, r is the result. Patch its 'name' with the full path before returning it.
	r.name := paths;
	return r;
	end
	$$;

	-- List all revision IDs starting from a given revision, going back in time
	--
	-- TODO ordering: should be breadth-first right now (what do we want?)
	-- TODO ordering: ORDER BY parent_rank somewhere?
	create or replace function swh_revision_list(root_revisions bytea[], num_revs bigint default NULL)
	returns table (id sha1_git, parents bytea[])
	language sql
	stable
	as $$
	with recursive full_rev_list(id) as (
	(select id from revision where id = ANY(root_revisions))
	union
	(select h.parent_id
	from revision_history as h
	join full_rev_list on h.id = full_rev_list.id)
	),
	rev_list as (select id from full_rev_list limit num_revs)
	select rev_list.id as id,
	array(select rh.parent_id::bytea
	from revision_history rh
	where rh.id = rev_list.id
	order by rh.parent_rank
	) as parent
	from rev_list;
	$$;

	-- List all the children of a given revision
	create or replace function swh_revision_list_children(root_revisions bytea[], num_revs bigint default NULL)
	returns table (id sha1_git, parents bytea[])
	language sql
	stable
	as $$
	with recursive full_rev_list(id) as (
	(select id from revision where id = ANY(root_revisions))
	union
	(select h.id
	from revision_history as h
	join full_rev_list on h.parent_id = full_rev_list.id)
	),
	rev_list as (select id from full_rev_list limit num_revs)
	select rev_list.id as id,
	array(select rh.parent_id::bytea
	from revision_history rh
	where rh.id = rev_list.id
	order by rh.parent_rank
	) as parent
	from rev_list;
	$$;


	-- Detailed entry for a revision
	create type revision_entry as
	(
	id sha1_git,
	date timestamptz,
	date_offset smallint,
	date_neg_utc_offset boolean,
	committer_date timestamptz,
	committer_date_offset smallint,
	committer_date_neg_utc_offset boolean,
	type revision_type,
	directory sha1_git,
	message bytea,
	author_id bigint,
	author_fullname bytea,
	author_name bytea,
	author_email bytea,
	committer_id bigint,
	committer_fullname bytea,
	committer_name bytea,
	committer_email bytea,
	metadata jsonb,
	synthetic boolean,
	parents bytea[],
	object_id bigint
	);


	-- "git style" revision log. Similar to swh_revision_list(), but returning all
	-- information associated to each revision, and expanding authors/committers
	create or replace function swh_revision_log(root_revisions bytea[], num_revs bigint default NULL)
	returns setof revision_entry
	language sql
	stable
	as $$
	select t.id, r.date, r.date_offset, r.date_neg_utc_offset,
	r.committer_date, r.committer_date_offset, r.committer_date_neg_utc_offset,
	r.type, r.directory, r.message,
	a.id, a.fullname, a.name, a.email,
	c.id, c.fullname, c.name, c.email,
	r.metadata, r.synthetic, t.parents, r.object_id
	from swh_revision_list(root_revisions, num_revs) as t
	left join revision r on t.id = r.id
	left join person a on a.id = r.author
	left join person c on c.id = r.committer;
	$$;


	-- Retrieve revisions from tmp_bytea in bulk
	create or replace function swh_revision_get()
	returns setof revision_entry
	language plpgsql
	as $$
	begin
	return query
	select r.id, r.date, r.date_offset, r.date_neg_utc_offset,
	r.committer_date, r.committer_date_offset, r.committer_date_neg_utc_offset,
	r.type, r.directory, r.message,
	a.id, a.fullname, a.name, a.email, c.id, c.fullname, c.name, c.email, r.metadata, r.synthetic,
	array(select rh.parent_id::bytea from revision_history rh where rh.id = t.id order by rh.parent_rank)
	as parents, r.object_id
	from tmp_bytea t
	left join revision r on t.id = r.id
	left join person a on a.id = r.author
	left join person c on c.id = r.committer;
	return;
	end
	$$;

	-- List missing revisions from tmp_bytea
	create or replace function swh_revision_missing()
	returns setof sha1_git
	language plpgsql
	as $$
	begin
	return query
	select id::sha1_git from tmp_bytea t
	where not exists (
	select 1 from revision r
	where r.id = t.id);
	return;
	end
	$$;

	-- Detailed entry for a release
	create type release_entry as
	(
	id sha1_git,
	target sha1_git,
	target_type object_type,
	date timestamptz,
	date_offset smallint,
	date_neg_utc_offset boolean,
	name bytea,
	comment bytea,
	synthetic boolean,
	author_id bigint,
	author_fullname bytea,
	author_name bytea,
	author_email bytea,
	object_id bigint
	);

	-- Detailed entry for release
	create or replace function swh_release_get()
	returns setof release_entry
	language plpgsql
	as $$
	begin
	return query
	select r.id, r.target, r.target_type, r.date, r.date_offset, r.date_neg_utc_offset, r.name, r.comment,
	r.synthetic, p.id as author_id, p.fullname as author_fullname, p.name as author_name, p.email as author_email, r.object_id
	from tmp_bytea t
	inner join release r on t.id = r.id
	inner join person p on p.id = r.author;
	return;
	end
	$$;

	-- Create entries in person from tmp_revision
	create or replace function swh_person_add_from_revision()
	returns void
	language plpgsql
	as $$
	begin
	with t as (
	select author_fullname as fullname, author_name as name, author_email as email from tmp_revision
	union
	select committer_fullname as fullname, committer_name as name, committer_email as email from tmp_revision
	) insert into person (fullname, name, email)
	select distinct fullname, name, email from t
	where not exists (
	select 1
	from person p
	where t.fullname = p.fullname
	);
	return;
	end
	$$;


	-- Create entries in revision from tmp_revision
	create or replace function swh_revision_add()
	returns void
	language plpgsql
	as $$
	begin
	perform swh_person_add_from_revision();

	insert into revision (id, date, date_offset, date_neg_utc_offset, committer_date, committer_date_offset, committer_date_neg_utc_offset, type, directory, message, author, committer, metadata, synthetic)
	select t.id, t.date, t.date_offset, t.date_neg_utc_offset, t.committer_date, t.committer_date_offset, t.committer_date_neg_utc_offset, t.type, t.directory, t.message, a.id, c.id, t.metadata, t.synthetic
	from tmp_revision t
	left join person a on a.fullname = t.author_fullname
	left join person c on c.fullname = t.committer_fullname;
	return;
	end
	$$;


	-- List missing releases from tmp_bytea
	create or replace function swh_release_missing()
	returns setof sha1_git
	language plpgsql
	as $$
	begin
	return query
	select id::sha1_git from tmp_bytea t
	where not exists (
	select 1 from release r
	where r.id = t.id);
	end
	$$;


	-- Create entries in person from tmp_release
	create or replace function swh_person_add_from_release()
	returns void
	language plpgsql
	as $$
	begin
	with t as (
	select distinct author_fullname as fullname, author_name as name, author_email as email from tmp_release
	) insert into person (fullname, name, email)
	select fullname, name, email from t
	where not exists (
	select 1
	from person p
	where t.fullname = p.fullname
	);
	return;
	end
	$$;


	-- Create entries in release from tmp_release
	create or replace function swh_release_add()
	returns void
	language plpgsql
	as $$
	begin
	perform swh_person_add_from_release();

	insert into release (id, target, target_type, date, date_offset, date_neg_utc_offset, name, comment, author, synthetic)
	select t.id, t.target, t.target_type, t.date, t.date_offset, t.date_neg_utc_offset, t.name, t.comment, a.id, t.synthetic
	from tmp_release t
	left join person a on a.fullname = t.author_fullname;
	return;
	end
	$$;

	create or replace function swh_occurrence_update_for_origin(origin_id bigint)
	returns void
	language sql
	as $$
	delete from occurrence where origin = origin_id;
	insert into occurrence (origin, branch, target, target_type)
	select origin, branch, target, target_type
	from occurrence_history
	where origin = origin_id and
	(select visit from origin_visit
	where origin = origin_id
	order by date desc
	limit 1) = any(visits);
	$$;

	create or replace function swh_occurrence_update_all()
	returns void
	language plpgsql
	as $$
	declare
	origin_id origin.id%type;
	begin
	for origin_id in
	select distinct id from origin
	loop
	perform swh_occurrence_update_for_origin(origin_id);
	end loop;
	return;
	end;
	$$;

	-- add a new origin_visit for origin origin_id at date.
	--
	-- Returns the new visit id.
	create or replace function swh_origin_visit_add(origin_id bigint, date timestamptz)
	returns bigint
	language sql
	as $$
	with last_known_visit as (
	select coalesce(max(visit), 0) as visit
	from origin_visit
	where origin = origin_id
	)
	insert into origin_visit (origin, date, visit, status)
	values (origin_id, date, (select visit from last_known_visit) + 1, 'ongoing')
	returning visit;
	$$;

	-- add tmp_occurrence_history entries to occurrence_history
	--
	-- operates in bulk: 0. swh_mktemp(occurrence_history), 1. COPY to tmp_occurrence_history,
	-- 2. call this function
	create or replace function swh_occurrence_history_add()
	returns void
	language plpgsql
	as $$
	declare
	origin_id origin.id%type;
	begin
	-- Create or update occurrence_history
	with occurrence_history_id_visit as (
	select tmp_occurrence_history.*, object_id, visits from tmp_occurrence_history
	left join occurrence_history using(origin, branch, target, target_type)
	),
	occurrences_to_update as (
	select object_id, visit from occurrence_history_id_visit where object_id is not null
	),
	update_occurrences as (
	update occurrence_history
	set visits = array(select unnest(occurrence_history.visits) as e
	union
	select occurrences_to_update.visit as e
	order by e)
	from occurrences_to_update
	where occurrence_history.object_id = occurrences_to_update.object_id
	)
	insert into occurrence_history (origin, branch, target, target_type, visits)
	select origin, branch, target, target_type, ARRAY[visit]
	from occurrence_history_id_visit
	where object_id is null;

	-- update occurrence
	for origin_id in
	select distinct origin from tmp_occurrence_history
	loop
	perform swh_occurrence_update_for_origin(origin_id);
	end loop;
	return;
	end
	$$;


	-- Absolute path: directory reference + complete path relative to it
	create type content_dir as (
	directory sha1_git,
	path unix_path
	);


	-- Find the containing directory of a given content, specified by sha1
	-- (note: not sha1_git).
	--
	-- Return a pair (dir_it, path) where path is a UNIX path that, from the
	-- directory root, reach down to a file with the desired content. Return NULL
	-- if no match is found.
	--
	-- In case of multiple paths (i.e., pretty much always), an arbitrary one is
	-- chosen.
	create or replace function swh_content_find_directory(content_id sha1)
	returns content_dir
	language sql
	stable
	as $$
	with recursive path as (
	-- Recursively build a path from the requested content to a root
	-- directory. Each iteration returns a pair (dir_id, filename) where
	-- filename is relative to dir_id. Stops when no parent directory can
	-- be found.
	(select dir.id as dir_id, dir_entry_f.name as name, 0 as depth
	from directory_entry_file as dir_entry_f
	join content on content.sha1_git = dir_entry_f.target
	join directory as dir on dir.file_entries @> array[dir_entry_f.id]
	where content.sha1 = content_id
	limit 1)
	union all
	(select dir.id as dir_id,
	(dir_entry_d.name \|\| '/' \|\| path.name)::unix_path as name,
	path.depth + 1
	from path
	join directory_entry_dir as dir_entry_d on dir_entry_d.target = path.dir_id
	join directory as dir on dir.dir_entries @> array[dir_entry_d.id]
	limit 1)
	)
	select dir_id, name from path order by depth desc limit 1;
	$$;


	-- Walk the revision history starting from a given revision, until a matching
	-- occurrence is found. Return all occurrence information if one is found, NULL
	-- otherwise.
	create or replace function swh_revision_find_occurrence(revision_id sha1_git)
	returns occurrence
	language sql
	stable
	as $$
	select origin, branch, target, target_type
	from swh_revision_list_children(ARRAY[revision_id] :: bytea[]) as rev_list
	left join occurrence_history occ_hist
	on rev_list.id = occ_hist.target
	where occ_hist.origin is not null and
	occ_hist.target_type = 'revision'
	limit 1;
	$$;

	-- Find the visit of origin id closest to date visit_date
	create or replace function swh_visit_find_by_date(origin bigint, visit_date timestamptz default NOW())
	returns origin_visit
	language sql
	stable
	as $$
	with closest_two_visits as ((
	select origin_visit, (date - visit_date) as interval
	from origin_visit
	where date >= visit_date
	order by date asc
	limit 1
	) union (
	select origin_visit, (visit_date - date) as interval
	from origin_visit
	where date < visit_date
	order by date desc
	limit 1
	)) select (origin_visit).* from closest_two_visits order by interval limit 1
	$$;

	-- Find the visit of origin id closest to date visit_date
	create or replace function swh_visit_get(origin bigint)
	returns origin_visit
	language sql
	stable
	as $$
	select *
	from origin_visit
	where origin=origin
	order by date desc
	$$;


	-- Retrieve occurrence by filtering on origin_id and optionally on
	-- branch_name and/or validity range
	create or replace function swh_occurrence_get_by(
	origin_id bigint,
	branch_name bytea default NULL,
	date timestamptz default NULL)
	returns setof occurrence_history
	language plpgsql
	as $$
	declare
	filters text[] := array[] :: text[]; -- AND-clauses used to filter content
	visit_id bigint;
	q text;
	begin
	if origin_id is not null then
	filters := filters \|\| format('origin = %L', origin_id);
	end if;
	if branch_name is not null then
	filters := filters \|\| format('branch = %L', branch_name);
	end if;
	if date is not null then
	if origin_id is null then
	raise exception 'Needs an origin_id to filter by date.';
	end if;
	select visit from swh_visit_find_by_date(origin_id, date) into visit_id;
	if visit_id is null then
	return;
	end if;
	filters := filters \|\| format('%L = any(visits)', visit_id);
	end if;

	if cardinality(filters) = 0 then
	raise exception 'At least one filter amongst (origin_id, branch_name, date) is needed';
	else
	q = format('select * ' \|\|
	'from occurrence_history ' \|\|
	'where %s',
	array_to_string(filters, ' and '));
	return query execute q;
	end if;
	end
	$$;


	-- Retrieve revisions by occurrence criterion filtering
	create or replace function swh_revision_get_by(
	origin_id bigint,
	branch_name bytea default NULL,
	date timestamptz default NULL)
	returns setof revision_entry
	language sql
	stable
	as $$
	select r.id, r.date, r.date_offset, r.date_neg_utc_offset,
	r.committer_date, r.committer_date_offset, r.committer_date_neg_utc_offset,
	r.type, r.directory, r.message,
	a.id, a.fullname, a.name, a.email, c.id, c.fullname, c.name, c.email, r.metadata, r.synthetic,
	array(select rh.parent_id::bytea
	from revision_history rh
	where rh.id = r.id
	order by rh.parent_rank
	) as parents, r.object_id
	from swh_occurrence_get_by(origin_id, branch_name, date) as occ
	inner join revision r on occ.target = r.id
	left join person a on a.id = r.author
	left join person c on c.id = r.committer;
	$$;

	-- Retrieve a release by occurrence criterion
	create or replace function swh_release_get_by(
	origin_id bigint)
	returns setof release_entry
	language sql
	stable
	as $$
	select r.id, r.target, r.target_type, r.date, r.date_offset, r.date_neg_utc_offset,
	r.name, r.comment, r.synthetic, a.id as author_id, a.fullname as author_fullname,
	a.name as author_name, a.email as author_email, r.object_id
	from release r
	inner join occurrence_history occ on occ.target = r.target
	left join person a on a.id = r.author
	where occ.origin = origin_id and occ.target_type = 'revision' and r.target_type = 'revision';
	$$;


	create type content_provenance as (
	content sha1_git,
	revision sha1_git,
	origin bigint,
	visit bigint,
	path unix_path
	);

	COMMENT ON TYPE content_provenance IS 'Provenance information on content';

	create or replace function swh_content_find_provenance(content_id sha1_git)
	returns setof content_provenance
	language sql
	as $$
	with subscripted_paths as (
	select content, revision_paths, generate_subscripts(revision_paths, 1) as s
	from cache_content_revision
	where content = content_id
	),
	cleaned_up_contents as (
	select content, revision_paths[s][1]::sha1_git as revision, revision_paths[s][2]::unix_path as path
	from subscripted_paths
	)
	select cuc.content, cuc.revision, cro.origin, cro.visit, cuc.path
	from cleaned_up_contents cuc
	inner join cache_revision_origin cro using(revision)
	$$;

	COMMENT ON FUNCTION swh_content_find_provenance(sha1_git) IS 'Given a content, provide provenance information on it';


	create type object_found as (
	sha1_git sha1_git,
	type object_type,
	id bytea, -- sha1 or sha1_git depending on object_type
	object_id bigint
	);

	-- Find objects by sha1_git, return their type and their main identifier
	create or replace function swh_object_find_by_sha1_git()
	returns setof object_found
	language plpgsql
	as $$
	begin
	return query
	with known_objects as ((
	select id as sha1_git, 'release'::object_type as type, id, object_id from release r
	where exists (select 1 from tmp_bytea t where t.id = r.id)
	) union all (
	select id as sha1_git, 'revision'::object_type as type, id, object_id from revision r
	where exists (select 1 from tmp_bytea t where t.id = r.id)
	) union all (
	select id as sha1_git, 'directory'::object_type as type, id, object_id from directory d
	where exists (select 1 from tmp_bytea t where t.id = d.id)
	) union all (
	select sha1_git as sha1_git, 'content'::object_type as type, sha1 as id, object_id from content c
	where exists (select 1 from tmp_bytea t where t.id = c.sha1_git)
	))
	select t.id::sha1_git as sha1_git, k.type, k.id, k.object_id from tmp_bytea t
	left join known_objects k on t.id = k.sha1_git;
	end
	$$;

	-- Create entries in entity_history from tmp_entity_history
	--
	-- TODO: do something smarter to compress the entries if the data
	-- didn't change.
	create or replace function swh_entity_history_add()
	returns void
	language plpgsql
	as $$
	begin
	insert into entity_history (
	uuid, parent, name, type, description, homepage, active, generated, lister_metadata, metadata, validity
	) select * from tmp_entity_history;
	return;
	end
	$$;


	create or replace function swh_update_entity_from_entity_history()
	returns trigger
	language plpgsql
	as $$
	begin
	insert into entity (uuid, parent, name, type, description, homepage, active, generated,
	lister_metadata, metadata, last_seen, last_id)
	select uuid, parent, name, type, description, homepage, active, generated,
	lister_metadata, metadata, unnest(validity), id
	from entity_history
	where uuid = NEW.uuid
	order by unnest(validity) desc limit 1
	on conflict (uuid) do update set
	parent = EXCLUDED.parent,
	name = EXCLUDED.name,
	type = EXCLUDED.type,
	description = EXCLUDED.description,
	homepage = EXCLUDED.homepage,
	active = EXCLUDED.active,
	generated = EXCLUDED.generated,
	lister_metadata = EXCLUDED.lister_metadata,
	metadata = EXCLUDED.metadata,
	last_seen = EXCLUDED.last_seen,
	last_id = EXCLUDED.last_id;

	return null;
	end
	$$;

	create trigger update_entity
	after insert or update
	on entity_history
	for each row
	execute procedure swh_update_entity_from_entity_history();

	-- map an id of tmp_entity_lister to a full entity
	create type entity_id as (
	id bigint,
	uuid uuid,
	parent uuid,
	name text,
	type entity_type,
	description text,
	homepage text,
	active boolean,
	generated boolean,
	lister_metadata jsonb,
	metadata jsonb,
	last_seen timestamptz,
	last_id bigint
	);

	-- find out the uuid of the entries of entity with the metadata
	-- contained in tmp_entity_lister
	create or replace function swh_entity_from_tmp_entity_lister()
	returns setof entity_id
	language plpgsql
	as $$
	begin
	return query
	select t.id, e.*
	from tmp_entity_lister t
	left join entity e
	on e.lister_metadata @> t.lister_metadata;
	return;
	end
	$$;

	create or replace function swh_entity_get(entity_uuid uuid)
	returns setof entity
	language sql
	stable
	as $$
	with recursive entity_hierarchy as (
	select e.*
	from entity e where uuid = entity_uuid
	union
	select p.*
	from entity_hierarchy e
	join entity p on e.parent = p.uuid
	)
	select *
	from entity_hierarchy;
	$$;


	-- Object listing by object_id

	create or replace function swh_content_list_by_object_id(
	min_excl bigint,
	max_incl bigint
	)
	returns setof content
	language sql
	stable
	as $$
	select * from content
	where object_id > min_excl and object_id <= max_incl
	order by object_id;
	$$;

	create or replace function swh_revision_list_by_object_id(
	min_excl bigint,
	max_incl bigint
	)
	returns setof revision_entry
	language sql
	stable
	as $$
	with revs as (
	select * from revision
	where object_id > min_excl and object_id <= max_incl
	)
	select r.id, r.date, r.date_offset, r.date_neg_utc_offset,
	r.committer_date, r.committer_date_offset, r.committer_date_neg_utc_offset,
	r.type, r.directory, r.message,
	a.id, a.fullname, a.name, a.email, c.id, c.fullname, c.name, c.email, r.metadata, r.synthetic,
	array(select rh.parent_id::bytea from revision_history rh where rh.id = r.id order by rh.parent_rank)
	as parents, r.object_id
	from revs r
	left join person a on a.id = r.author
	left join person c on c.id = r.committer
	order by r.object_id;
	$$;

	create or replace function swh_release_list_by_object_id(
	min_excl bigint,
	max_incl bigint
	)
	returns setof release_entry
	language sql
	stable
	as $$
	with rels as (
	select * from release
	where object_id > min_excl and object_id <= max_incl
	)
	select r.id, r.target, r.target_type, r.date, r.date_offset, r.date_neg_utc_offset, r.name, r.comment,
	r.synthetic, p.id as author_id, p.fullname as author_fullname, p.name as author_name, p.email as author_email, r.object_id
	from rels r
	left join person p on p.id = r.author
	order by r.object_id;
	$$;


	create or replace function swh_cache_content_revision_add()
	returns void
	language plpgsql
	as $$
	declare
	cnt bigint;
	d sha1_git;
	begin
	delete from tmp_bytea t where exists (select 1 from cache_content_revision_processed ccrp where t.id = ccrp.revision);

	select count(*) from tmp_bytea into cnt;
	if cnt <> 0 then
	create temporary table tmp_ccr (
	content sha1_git,
	directory sha1_git,
	path unix_path
	) on commit drop;

	create temporary table tmp_ccrd (
	directory sha1_git,
	revision sha1_git
	) on commit drop;

	insert into tmp_ccrd
	select directory, id as revision
	from tmp_bytea
	inner join revision using(id);

	insert into cache_content_revision_processed
	select distinct id from tmp_bytea order by id;

	for d in
	select distinct directory from tmp_ccrd
	loop
	insert into tmp_ccr
	select sha1_git as content, d as directory, name as path
	from swh_directory_walk(d)
	where type='file';
	end loop;

	with revision_contents as (
	select content, false as blacklisted, array_agg(ARRAY[revision::bytea, path::bytea]) as revision_paths
	from tmp_ccr
	inner join tmp_ccrd using (directory)
	group by content
	order by content
	), updated_cache_entries as (
	update cache_content_revision ccr
	set revision_paths = ccr.revision_paths \|\| rc.revision_paths
	from revision_contents rc
	where ccr.content = rc.content and ccr.blacklisted = false
	returning ccr.content
	) insert into cache_content_revision
	select * from revision_contents rc
	where not exists (select 1 from updated_cache_entries uce where uce.content = rc.content)
	order by rc.content
	on conflict (content) do update
	set revision_paths = cache_content_revision.revision_paths \|\| EXCLUDED.revision_paths
	where cache_content_revision.blacklisted = false;
	return;
	else
	return;
	end if;
	end
	$$;

	COMMENT ON FUNCTION swh_cache_content_revision_add() IS 'Cache the revisions from tmp_bytea into cache_content_revision';


	create or replace function swh_occurrence_by_origin_visit(origin_id bigint, visit_id bigint)
	returns setof occurrence
	language sql
	stable
	as $$
	select origin, branch, target, target_type from occurrence_history
	where origin = origin_id and visit_id = ANY(visits);
	$$;

	create type cache_content_signature as (
	sha1 sha1,
	sha1_git sha1_git,
	sha256 sha256,
	revision_paths bytea[][]
	);

	create or replace function swh_cache_content_get_all()
	returns setof cache_content_signature
	language sql
	stable
	as $$
	SELECT c.sha1, c.sha1_git, c.sha256, ccr.revision_paths
	FROM cache_content_revision ccr
	INNER JOIN content as c
	ON ccr.content = c.sha1_git
	$$;

	COMMENT ON FUNCTION swh_cache_content_get_all() IS 'Retrieve batch of contents';


	create or replace function swh_cache_content_get(target sha1_git)
	returns setof cache_content_signature
	language sql
	stable
	as $$
	SELECT c.sha1, c.sha1_git, c.sha256, ccr.revision_paths
	FROM cache_content_revision ccr
	INNER JOIN content as c
	ON ccr.content = c.sha1_git
	where ccr.content = target
	$$;

	COMMENT ON FUNCTION swh_cache_content_get(sha1_git) IS 'Retrieve cache content information';

	create or replace function swh_revision_from_target(target sha1_git, target_type object_type)
	returns sha1_git
	language plpgsql
	as $$
	#variable_conflict use_variable
	begin
	while target_type = 'release' loop
	select r.target, r.target_type from release r where r.id = target into target, target_type;
	end loop;
	if target_type = 'revision' then
	return target;
	else
	return null;
	end if;
	end
	$$;

	create or replace function swh_cache_revision_origin_add(origin_id bigint, visit_id bigint)
	returns setof sha1_git
	language plpgsql
	as $$
	declare
	visit_exists bool;
	begin
	select true from origin_visit where origin = origin_id and visit = visit_id into visit_exists;

	if not visit_exists then
	return;
	end if;

	visit_exists := null;

	select true from cache_revision_origin where origin = origin_id and visit = visit_id limit 1 into visit_exists;

	if visit_exists then
	return;
	end if;

	return query with new_pointed_revs as (
	select swh_revision_from_target(target, target_type) as id
	from swh_occurrence_by_origin_visit(origin_id, visit_id)
	),
	old_pointed_revs as (
	select swh_revision_from_target(target, target_type) as id
	from swh_occurrence_by_origin_visit(origin_id,
	(select visit from origin_visit where origin = origin_id and visit < visit_id order by visit desc limit 1))
	),
	new_revs as (
	select distinct id
	from swh_revision_list(array(select id::bytea from new_pointed_revs where id is not null))
	),
	old_revs as (
	select distinct id
	from swh_revision_list(array(select id::bytea from old_pointed_revs where id is not null))
	)
	insert into cache_revision_origin (revision, origin, visit)
	select n.id as revision, origin_id, visit_id from new_revs n
	where not exists (
	select 1 from old_revs o
	where o.id = n.id)
	returning revision;
	end
	$$;

	-- create a temporary table for content_ctags tmp_content_mimetype_missing,
	create or replace function swh_mktemp_content_mimetype_missing()
	returns void
	language sql
	as $$
	create temporary table tmp_content_mimetype_missing (
	id sha1,
	tool_name text,
	tool_version text
	) on commit drop;
	$$;

	comment on function swh_mktemp_content_mimetype_missing() IS 'Helper table to filter existing mimetype information';

	-- check which entries of tmp_bytea are missing from content_mimetype
	--
	-- operates in bulk: 0. swh_mktemp_bytea(), 1. COPY to tmp_bytea,
	-- 2. call this function
	create or replace function swh_content_mimetype_missing()
	returns setof sha1
	language plpgsql
	as $$
	begin
	return query
	(select id::sha1 from tmp_content_mimetype_missing as tmp
	where not exists
	(select 1 from content_mimetype as c
	inner join indexer_configuration i
	on (tmp.tool_name = i.tool_name and tmp.tool_version = i.tool_version)
	where c.id = tmp.id));
	return;
	end
	$$;

	comment on function swh_content_mimetype_missing() is 'Filter existing mimetype information';

	-- create a temporary table for content_ctags tmp_content_mimetype,
	create or replace function swh_mktemp_content_mimetype()
	returns void
	language sql
	as $$
	create temporary table tmp_content_mimetype (
	like content_mimetype including defaults
	) on commit drop;
	alter table tmp_content_mimetype
	drop column indexer_configuration_id,
	add column tool_name text,
	add column tool_version text;
	$$;

	comment on function swh_mktemp_content_mimetype() IS 'Helper table to add mimetype information';

	-- add tmp_content_mimetype entries to content_mimetype, overwriting
	-- duplicates if conflict_update is true, skipping duplicates otherwise.
	--
	-- If filtering duplicates is in order, the call to
	-- swh_content_mimetype_missing must take place before calling this
	-- function.
	--
	--
	-- operates in bulk: 0. swh_mktemp(content_mimetype), 1. COPY to tmp_content_mimetype,
	-- 2. call this function
	create or replace function swh_content_mimetype_add(conflict_update boolean)
	returns void
	language plpgsql
	as $$
	begin
	if conflict_update then
	insert into content_mimetype (id, mimetype, encoding, indexer_configuration_id)
	select id, mimetype, encoding,
	(select id from indexer_configuration
	where tool_name=tcm.tool_name
	and tool_version=tcm.tool_version)
	from tmp_content_mimetype tcm
	on conflict(id, indexer_configuration_id)
	do update set mimetype = excluded.mimetype,
	encoding = excluded.encoding;

	else
	insert into content_mimetype (id, mimetype, encoding, indexer_configuration_id)
	select id, mimetype, encoding,
	(select id from indexer_configuration
	where tool_name=tcm.tool_name
	and tool_version=tcm.tool_version)
	from tmp_content_mimetype tcm
	on conflict(id, indexer_configuration_id) do nothing;
	end if;
	return;
	end
	$$;

	comment on function swh_content_mimetype_add(boolean) IS 'Add new content mimetypes';

	create type content_mimetype_signature as(
	id sha1,
	mimetype bytea,
	encoding bytea,
	tool_name text,
	tool_version text
	);

	-- Retrieve list of content mimetype from the temporary table.
	--
	-- operates in bulk: 0. mktemp(tmp_bytea), 1. COPY to tmp_bytea,
	-- 2. call this function
	create or replace function swh_content_mimetype_get()
	returns setof content_mimetype_signature
	language plpgsql
	as $$
	begin
	return query
	select c.id, mimetype, encoding, tool_name, tool_version
	from tmp_bytea t
	inner join content_mimetype c on c.id=t.id
	inner join indexer_configuration i on c.indexer_configuration_id=i.id;
	return;
	end
	$$;

	comment on function swh_content_mimetype_get() IS 'List content''s mimetypes';

	-- create a temporary table for content_language tmp_content_language,
	create or replace function swh_mktemp_content_language_missing()
	returns void
	language sql
	as $$
	create temporary table tmp_content_language_missing (
	id sha1,
	lang languages,
	tool_name text,
	tool_version text
	) on commit drop;
	$$;

	comment on function swh_mktemp_content_language_missing() is 'Helper table to filter missing language';

	-- check which entries of tmp_bytea are missing from content_language
	--
	-- operates in bulk: 0. swh_mktemp_bytea(), 1. COPY to tmp_bytea,
	-- 2. call this function
	create or replace function swh_content_language_missing()
	returns setof sha1
	language plpgsql
	as $$
	begin
	return query
	select id::sha1 from tmp_content_language_missing as tmp
	where not exists
	(select 1 from content_language as c
	inner join indexer_configuration i
	on (tmp.tool_name = i.tool_name and tmp.tool_version = i.tool_version)
	where c.id = tmp.id);
	return;
	end
	$$;

	comment on function swh_content_language_missing() IS 'Filter missing content languages';

	-- add tmp_content_language entries to content_language, overwriting
	-- duplicates if conflict_update is true, skipping duplicates otherwise.
	--
	-- If filtering duplicates is in order, the call to
	-- swh_content_language_missing must take place before calling this
	-- function.
	--
	-- operates in bulk: 0. swh_mktemp(content_language), 1. COPY to
	-- tmp_content_language, 2. call this function
	create or replace function swh_content_language_add(conflict_update boolean)
	returns void
	language plpgsql
	as $$
	begin
	if conflict_update then
	insert into content_language (id, lang, indexer_configuration_id)
	select id, lang,
	(select id from indexer_configuration
	where tool_name=tcl.tool_name
	and tool_version=tcl.tool_version)
	from tmp_content_language tcl
	on conflict(id, indexer_configuration_id)
	do update set lang = excluded.lang;

	else
	insert into content_language (id, lang, indexer_configuration_id)
	select id, lang,
	(select id from indexer_configuration
	where tool_name=tcl.tool_name
	and tool_version=tcl.tool_version)
	from tmp_content_language tcl
	on conflict(id, indexer_configuration_id)
	do nothing;
	end if;
	return;
	end
	$$;

	comment on function swh_content_language_add(boolean) IS 'Add new content languages';

	-- create a temporary table for retrieving content_language
	create or replace function swh_mktemp_content_language()
	returns void
	language sql
	as $$
	create temporary table tmp_content_language (
	like content_language including defaults
	) on commit drop;
	alter table tmp_content_language
	drop column indexer_configuration_id,
	add column tool_name text,
	add column tool_version text;
	$$;

	comment on function swh_mktemp_content_language() is 'Helper table to add content language';

	create type content_language_signature as (
	id sha1,
	lang languages,
	tool_name text,
	tool_version text
	);

	-- Retrieve list of content language from the temporary table.
	--
	-- operates in bulk: 0. mktemp(tmp_bytea), 1. COPY to tmp_bytea, 2. call this function
	create or replace function swh_content_language_get()
	returns setof content_language_signature
	language plpgsql
	as $$
	begin
	return query
	select c.id, lang, tool_name, tool_version
	from tmp_bytea t
	inner join content_language c on c.id = t.id
	inner join indexer_configuration i on i.id=c.indexer_configuration_id;
	return;
	end
	$$;

	comment on function swh_content_language_get() is 'List content''s language';


	-- create a temporary table for content_ctags tmp_content_ctags,
	create or replace function swh_mktemp_content_ctags()
	returns void
	language sql
	as $$
	create temporary table tmp_content_ctags (
	like content_ctags including defaults
	) on commit drop;
	alter table tmp_content_ctags
	drop column indexer_configuration_id,
	add column tool_name text,
	add column tool_version text;
	$$;

	comment on function swh_mktemp_content_ctags() is 'Helper table to add content ctags';


	-- add tmp_content_ctags entries to content_ctags, overwriting
	-- duplicates if conflict_update is true, skipping duplicates otherwise.
	--
	-- operates in bulk: 0. swh_mktemp(content_ctags), 1. COPY to tmp_content_ctags,
	-- 2. call this function
	create or replace function swh_content_ctags_add(conflict_update boolean)
	returns void
	language plpgsql
	as $$
	begin
	if conflict_update then
	delete from content_ctags
	- where id in (
	- select distinct id from tmp_content_ctags
	- );
	+ where id in (select tmp.id
	+ from tmp_content_ctags tmp
	+ inner join indexer_configuration i on (i.tool_name=tmp.tool_name and i.tool_version = tmp.tool_version));
	end if;

	insert into content_ctags (id, name, kind, line, lang, indexer_configuration_id)
	select id, name, kind, line, lang,
	(select id from indexer_configuration
	where tool_name=tct.tool_name
	and tool_version=tct.tool_version)
	from tmp_content_ctags tct
	on conflict(id, md5(name), kind, line, lang, indexer_configuration_id)
	do nothing;
	return;
	end
	$$;

	comment on function swh_content_ctags_add(boolean) IS 'Add new ctags symbols per content';

	-- create a temporary table for content_ctags missing routine
	create or replace function swh_mktemp_content_ctags_missing()
	returns void
	language sql
	as $$
	create temporary table tmp_content_ctags_missing (
	id sha1,
	tool_name text,
	tool_version text
	) on commit drop;
	$$;

	comment on function swh_mktemp_content_ctags_missing() is 'Helper table to filter missing content ctags';

	-- check which entries of tmp_bytea are missing from content_ctags
	--
	-- operates in bulk: 0. swh_mktemp_bytea(), 1. COPY to tmp_bytea,
	-- 2. call this function
	create or replace function swh_content_ctags_missing()
	returns setof sha1
	language plpgsql
	as $$
	begin
	return query
	(select id::sha1 from tmp_content_ctags_missing as tmp
	where not exists
	(select 1 from content_ctags as c
	inner join indexer_configuration i
	on (tmp.tool_name = i.tool_name and tmp.tool_version = i.tool_version)
	where c.id = tmp.id limit 1));
	return;
	end
	$$;

	comment on function swh_content_ctags_missing() IS 'Filter missing content ctags';

	create type content_ctags_signature as (
	id sha1,
	name text,
	kind text,
	line bigint,
	lang ctags_languages,
	tool_name text,
	tool_version text
	);

	-- Retrieve list of content ctags from the temporary table.
	--
	-- operates in bulk: 0. mktemp(tmp_bytea), 1. COPY to tmp_bytea, 2. call this function
	create or replace function swh_content_ctags_get()
	returns setof content_ctags_signature
	language plpgsql
	as $$
	begin
	return query
	select c.id, c.name, c.kind, c.line, c.lang, i.tool_name, i.tool_version
	from tmp_bytea t
	inner join content_ctags c using(id)
	inner join indexer_configuration i on i.id = c.indexer_configuration_id
	order by line;
	return;
	end
	$$;

	comment on function swh_content_ctags_get() IS 'List content ctags';

	create or replace function hash_sha1(text)
	returns text
	as $$
	select encode(digest($1, 'sha1'), 'hex')
	$$ language sql strict immutable;

	comment on function hash_sha1(text) is 'Compute sha1 hash as text';

	-- Search within ctags content.
	--
	create or replace function swh_content_ctags_search(
	expression text,
	l integer default 10,
	last_sha1 sha1 default '\x0000000000000000000000000000000000000000')
	returns setof content_ctags_signature
	language sql
	as $$
	select c.id, name, kind, line, lang, tool_name, tool_version
	from content_ctags c
	inner join indexer_configuration i on i.id = c.indexer_configuration_id
	where hash_sha1(name) = hash_sha1(expression)
	and c.id > last_sha1
	order by id
	limit l;
	$$;

	comment on function swh_content_ctags_search(text, integer, sha1) IS 'Equality search through ctags'' symbols';

	-- create a temporary table for content_fossology_license_missing
	create or replace function swh_mktemp_content_fossology_license_missing()
	returns void
	language sql
	as $$
	create temporary table tmp_content_fossology_license_missing (
	id bytea,
	tool_name text,
	tool_version text
	) on commit drop;
	$$;

	comment on function swh_mktemp_content_fossology_license_missing() is 'Helper table to add content license';

	-- check which entries of tmp_content_fossology_license are missing from content_fossology_license
	create or replace function swh_content_fossology_license_missing()
	returns setof sha1
	language plpgsql
	as $$
	begin
	return query
	(select id::sha1 from tmp_content_fossology_license_missing as tmp
	where not exists
	(select 1 from content_fossology_license as c
	inner join indexer_configuration i on i.id=c.indexer_configuration_id
	where c.id = tmp.id));
	return;
	end
	$$;

	comment on function swh_content_fossology_license_missing() IS 'Filter missing content licenses';

	-- create a temporary table for content_fossology_license tmp_content_fossology_license,
	create or replace function swh_mktemp_content_fossology_license()
	returns void
	language sql
	as $$
	create temporary table tmp_content_fossology_license (
	id sha1,
	tool_name text,
	tool_version text,
	license text
	) on commit drop;
	$$;

	comment on function swh_mktemp_content_fossology_license() is 'Helper table to add content license';

	-- add tmp_content_fossology_license entries to content_fossology_license, overwriting
	-- duplicates if conflict_update is true, skipping duplicates otherwise.
	--
	-- If filtering duplicates is in order, the call to
	-- swh_content_fossology_license_missing must take place before calling this
	-- function.
	--
	-- operates in bulk: 0. swh_mktemp(content_fossology_license), 1. COPY to
	-- tmp_content_fossology_license, 2. call this function
	create or replace function swh_content_fossology_license_add(conflict_update boolean)
	returns void
	language plpgsql
	as $$
	begin
	if conflict_update then
	+ -- delete from content_fossology_license c
	+ -- using tmp_content_fossology_license tmp, indexer_configuration i
	+ -- where c.id = tmp.id and i.tool_name = tmp.tool_name and i.tool_version = tmp.tool_version;
	delete from content_fossology_license
	- where id in (select distinct id from tmp_content_fossology_license);
	+ where id in (select tmp.id
	+ from tmp_content_fossology_license tmp
	+ inner join indexer_configuration i on (i.tool_name=tmp.tool_name and i.tool_version = tmp.tool_version));
	end if;

	insert into content_fossology_license (id, license_id, indexer_configuration_id)
	select tcl.id,
	(select id from fossology_license where name = tcl.license) as license,
	(select id from indexer_configuration where tool_name = tcl.tool_name
	and tool_version = tcl.tool_version)
	as indexer_configuration_id
	from tmp_content_fossology_license tcl
	on conflict(id, license_id, indexer_configuration_id)
	do nothing;
	return;
	end
	$$;

	comment on function swh_content_fossology_license_add(boolean) IS 'Add new content licenses';

	create or replace function swh_content_fossology_license_unknown()
	returns setof text
	language plpgsql
	as $$
	begin
	return query
	select name from tmp_content_fossology_license_unknown t where not exists (
	select 1 from fossology_license where name=t.name
	);
	end
	$$;

	comment on function swh_content_fossology_license_unknown() IS 'List unknown licenses';

	-- create a temporary table for checking licenses' name
	create or replace function swh_mktemp_content_fossology_license_unknown()
	returns void
	language sql
	as $$
	create temporary table tmp_content_fossology_license_unknown (
	name text not null
	) on commit drop;
	$$;

	comment on function swh_mktemp_content_fossology_license_unknown() is 'Helper table to list unknown licenses';

	create type content_fossology_license_signature as (
	id sha1,
	tool_name text,
	tool_version text,
	licenses text[]
	);

	-- Retrieve list of content license from the temporary table.
	--
	-- operates in bulk: 0. mktemp(tmp_bytea), 1. COPY to tmp_bytea,
	-- 2. call this function
	create or replace function swh_content_fossology_license_get()
	returns setof content_fossology_license_signature
	language plpgsql
	as $$
	begin
	return query
	select cl.id,
	ic.tool_name,
	ic.tool_version,
	array(select name
	from fossology_license
	where id = ANY(array_agg(cl.license_id))) as licenses
	from tmp_bytea tcl
	inner join content_fossology_license cl using(id)
	inner join indexer_configuration ic on ic.id=cl.indexer_configuration_id
	group by cl.id, ic.tool_name, ic.tool_version;
	return;
	end
	$$;

	comment on function swh_content_fossology_license_get() IS 'List content licenses';


	-- simple counter mapping a textual label to an integer value
	create type counter as (
	label text,
	value bigint
	);

	-- return statistics about the number of tuples in various SWH tables
	--
	-- Note: the returned values are based on postgres internal statistics
	-- (pg_class table), which are only updated daily (by autovacuum) or so
	create or replace function swh_stat_counters()
	returns setof counter
	language sql
	stable
	as $$
	select relname::text as label, reltuples::bigint as value
	from pg_class
	where oid in (
	'public.content'::regclass,
	'public.directory'::regclass,
	'public.directory_entry_dir'::regclass,
	'public.directory_entry_file'::regclass,
	'public.directory_entry_rev'::regclass,
	'public.occurrence'::regclass,
	'public.occurrence_history'::regclass,
	'public.origin'::regclass,
	'public.person'::regclass,
	'public.entity'::regclass,
	'public.entity_history'::regclass,
	'public.release'::regclass,
	'public.revision'::regclass,
	'public.revision_history'::regclass,
	'public.skipped_content'::regclass
	);
	$$;
	diff --git a/swh/storage/tests/test_storage.py b/swh/storage/tests/test_storage.py
	index 990e333b..3e0a8bd1 100644
	--- a/swh/storage/tests/test_storage.py
	+++ b/swh/storage/tests/test_storage.py
	@@ -1,2972 +1,2971 @@
	# Copyright (C) 2015-2016 The Software Heritage developers
	# See the AUTHORS file at the top-level directory of this distribution
	# License: GNU General Public License version 3, or any later version
	# See top-level LICENSE file for more information

	import copy
	import datetime
	import os
	import psycopg2
	import shutil
	import tempfile
	import unittest
	from uuid import UUID

	from unittest.mock import patch

	from nose.tools import istest
	from nose.plugins.attrib import attr

	from swh.core.tests.db_testing import DbTestFixture
	from swh.core.hashutil import hex_to_hash
	from swh.storage import Storage
	from swh.storage.db import cursor_to_bytes


	TEST_DIR = os.path.dirname(os.path.abspath(__file__))
	TEST_DATA_DIR = os.path.join(TEST_DIR, '../../../../swh-storage-testdata')


	@attr('db')
	class AbstractTestStorage(DbTestFixture):
	"""Base class for Storage testing.

	This class is used as-is to test local storage (see TestStorage
	below) and remote storage (see TestRemoteStorage in
	test_remote_storage.py.

	We need to have the two classes inherit from this base class
	separately to avoid nosetests running the tests from the base
	class twice.

	"""
	TEST_DB_DUMP = os.path.join(TEST_DATA_DIR, 'dumps/swh.dump')

	def setUp(self):
	super().setUp()
	self.maxDiff = None
	self.objroot = tempfile.mkdtemp()
	self.storage = Storage(self.conn, self.objroot)

	self.cont = {
	'data': b'42\n',
	'length': 3,
	'sha1': hex_to_hash(
	'34973274ccef6ab4dfaaf86599792fa9c3fe4689'),
	'sha1_git': hex_to_hash(
	'd81cc0710eb6cf9efd5b920a8453e1e07157b6cd'),
	'sha256': hex_to_hash(
	'673650f936cb3b0a2f93ce09d81be107'
	'48b1b203c19e8176b4eefc1964a0cf3a'),
	'status': 'visible',
	}

	self.cont2 = {
	'data': b'4242\n',
	'length': 5,
	'sha1': hex_to_hash(
	'61c2b3a30496d329e21af70dd2d7e097046d07b7'),
	'sha1_git': hex_to_hash(
	'36fade77193cb6d2bd826161a0979d64c28ab4fa'),
	'sha256': hex_to_hash(
	'859f0b154fdb2d630f45e1ecae4a8629'
	'15435e663248bb8461d914696fc047cd'),
	'status': 'visible',
	}

	self.cont3 = {
	'data': b'424242\n',
	'length': 7,
	'sha1': hex_to_hash(
	'3e21cc4942a4234c9e5edd8a9cacd1670fe59f13'),
	'sha1_git': hex_to_hash(
	'c932c7649c6dfa4b82327d121215116909eb3bea'),
	'sha256': hex_to_hash(
	'92fb72daf8c6818288a35137b72155f5'
	'07e5de8d892712ab96277aaed8cf8a36'),
	'status': 'visible',
	}

	self.missing_cont = {
	'data': b'missing\n',
	'length': 8,
	'sha1': hex_to_hash(
	'f9c24e2abb82063a3ba2c44efd2d3c797f28ac90'),
	'sha1_git': hex_to_hash(
	'33e45d56f88993aae6a0198013efa80716fd8919'),
	'sha256': hex_to_hash(
	'6bbd052ab054ef222c1c87be60cd191a'
	'ddedd24cc882d1f5f7f7be61dc61bb3a'),
	'status': 'absent',
	}

	self.skipped_cont = {
	'length': 1024 * 1024 * 200,
	'sha1_git': hex_to_hash(
	'33e45d56f88993aae6a0198013efa80716fd8920'),
	'reason': 'Content too long',
	'status': 'absent',
	}

	self.skipped_cont2 = {
	'length': 1024 * 1024 * 300,
	'sha1_git': hex_to_hash(
	'33e45d56f88993aae6a0198013efa80716fd8921'),
	'reason': 'Content too long',
	'status': 'absent',
	}

	self.dir = {
	'id': b'4\x013\x422\x531\x000\xf51\xe62\xa73\xff7\xc3\xa90',
	'entries': [
	{
	'name': b'foo',
	'type': 'file',
	'target': self.cont['sha1_git'],
	'perms': 0o644,
	},
	{
	'name': b'bar\xc3',
	'type': 'dir',
	'target': b'12345678901234567890',
	'perms': 0o2000,
	},
	],
	}

	self.dir2 = {
	'id': b'4\x013\x422\x531\x000\xf51\xe62\xa73\xff7\xc3\xa95',
	'entries': [
	{
	'name': b'oof',
	'type': 'file',
	'target': self.cont2['sha1_git'],
	'perms': 0o644,
	}
	],
	}

	self.dir3 = {
	'id': hex_to_hash('33e45d56f88993aae6a0198013efa80716fd8921'),
	'entries': [
	{
	'name': b'foo',
	'type': 'file',
	'target': self.cont['sha1_git'],
	'perms': 0o644,
	},
	{
	'name': b'bar',
	'type': 'dir',
	'target': b'12345678901234560000',
	'perms': 0o2000,
	},
	{
	'name': b'hello',
	'type': 'file',
	'target': b'12345678901234567890',
	'perms': 0o644,
	},

	],
	}

	self.minus_offset = datetime.timezone(datetime.timedelta(minutes=-120))
	self.plus_offset = datetime.timezone(datetime.timedelta(minutes=120))

	self.revision = {
	'id': b'56789012345678901234',
	'message': b'hello',
	'author': {
	'name': b'Nicolas Dandrimont',
	'email': b'nicolas@example.com',
	'fullname': b'Nicolas Dandrimont <nicolas@example.com> ',
	},
	'date': {
	'timestamp': 1234567890,
	'offset': 120,
	'negative_utc': None,
	},
	'committer': {
	'name': b'St\xc3fano Zacchiroli',
	'email': b'stefano@example.com',
	'fullname': b'St\xc3fano Zacchiroli <stefano@example.com>'
	},
	'committer_date': {
	'timestamp': 1123456789,
	'offset': 0,
	'negative_utc': True,
	},
	'parents': [b'01234567890123456789', b'23434512345123456789'],
	'type': 'git',
	'directory': self.dir['id'],
	'metadata': {
	'checksums': {
	'sha1': 'tarball-sha1',
	'sha256': 'tarball-sha256',
	},
	'signed-off-by': 'some-dude',
	'extra_headers': [
	['gpgsig', b'test123'],
	['mergetags', [b'foo\\bar', b'\x22\xaf\x89\x80\x01\x00']],
	],
	},
	'synthetic': True
	}

	self.revision2 = {
	'id': b'87659012345678904321',
	'message': b'hello again',
	'author': {
	'name': b'Roberto Dicosmo',
	'email': b'roberto@example.com',
	'fullname': b'Roberto Dicosmo <roberto@example.com>',
	},
	'date': {
	'timestamp': 1234567843.22,
	'offset': -720,
	'negative_utc': None,
	},
	'committer': {
	'name': b'tony',
	'email': b'ar@dumont.fr',
	'fullname': b'tony <ar@dumont.fr>',
	},
	'committer_date': {
	'timestamp': 1123456789,
	'offset': 0,
	'negative_utc': False,
	},
	'parents': [b'01234567890123456789'],
	'type': 'git',
	'directory': self.dir2['id'],
	'metadata': None,
	'synthetic': False
	}

	self.revision3 = {
	'id': hex_to_hash('7026b7c1a2af56521e951c01ed20f255fa054238'),
	'message': b'a simple revision with no parents this time',
	'author': {
	'name': b'Roberto Dicosmo',
	'email': b'roberto@example.com',
	'fullname': b'Roberto Dicosmo <roberto@example.com>',
	},
	'date': {
	'timestamp': 1234567843.22,
	'offset': -720,
	'negative_utc': None,
	},
	'committer': {
	'name': b'tony',
	'email': b'ar@dumont.fr',
	'fullname': b'tony <ar@dumont.fr>',
	},
	'committer_date': {
	'timestamp': 1127351742,
	'offset': 0,
	'negative_utc': False,
	},
	'parents': [],
	'type': 'git',
	'directory': self.dir2['id'],
	'metadata': None,
	'synthetic': True
	}

	self.revision4 = {
	'id': hex_to_hash('368a48fe15b7db2383775f97c6b247011b3f14f4'),
	'message': b'parent of self.revision2',
	'author': {
	'name': b'me',
	'email': b'me@soft.heri',
	'fullname': b'me <me@soft.heri>',
	},
	'date': {
	'timestamp': 1244567843.22,
	'offset': -720,
	'negative_utc': None,
	},
	'committer': {
	'name': b'committer-dude',
	'email': b'committer@dude.com',
	'fullname': b'committer-dude <committer@dude.com>',
	},
	'committer_date': {
	'timestamp': 1244567843.22,
	'offset': -720,
	'negative_utc': None,
	},
	'parents': [self.revision3['id']],
	'type': 'git',
	'directory': self.dir['id'],
	'metadata': None,
	'synthetic': False
	}

	self.origin = {
	'url': 'file:///dev/null',
	'type': 'git',
	}

	self.origin2 = {
	'url': 'file:///dev/zero',
	'type': 'git',
	}

	self.date_visit1 = datetime.datetime(2015, 1, 1, 23, 0, 0,
	tzinfo=datetime.timezone.utc)

	self.occurrence = {
	'branch': b'master',
	'target': b'67890123456789012345',
	'target_type': 'revision',
	}

	self.date_visit2 = datetime.datetime(2015, 1, 1, 23, 0, 0,
	tzinfo=datetime.timezone.utc)

	self.occurrence2 = {
	'branch': b'master',
	'target': self.revision2['id'],
	'target_type': 'revision',
	}

	self.date_visit3 = datetime.datetime(2015, 1, 1, 23, 0, 0,
	tzinfo=datetime.timezone.utc)

	# template occurrence to be filled in test (cf. revision_log_by)
	self.occurrence3 = {
	'branch': b'master',
	'target_type': 'revision',
	}

	self.release = {
	'id': b'87659012345678901234',
	'name': b'v0.0.1',
	'author': {
	'name': b'olasd',
	'email': b'nic@olasd.fr',
	'fullname': b'olasd <nic@olasd.fr>',
	},
	'date': {
	'timestamp': 1234567890,
	'offset': 42,
	'negative_utc': None,
	},
	'target': b'43210987654321098765',
	'target_type': 'revision',
	'message': b'synthetic release',
	'synthetic': True,
	}

	self.release2 = {
	'id': b'56789012348765901234',
	'name': b'v0.0.2',
	'author': {
	'name': b'tony',
	'email': b'ar@dumont.fr',
	'fullname': b'tony <ar@dumont.fr>',
	},
	'date': {
	'timestamp': 1634366813,
	'offset': -120,
	'negative_utc': None,
	},
	'target': b'432109\xa9765432\xc309\x00765',
	'target_type': 'revision',
	'message': b'v0.0.2\nMisc performance improvments + bug fixes',
	'synthetic': False
	}

	self.release3 = {
	'id': b'87659012345678904321',
	'name': b'v0.0.2',
	'author': {
	'name': b'tony',
	'email': b'tony@ardumont.fr',
	'fullname': b'tony <tony@ardumont.fr>',
	},
	'date': {
	'timestamp': 1634336813,
	'offset': 0,
	'negative_utc': False,
	},
	'target': self.revision2['id'],
	'target_type': 'revision',
	'message': b'yet another synthetic release',
	'synthetic': True,
	}

	self.fetch_history_date = datetime.datetime(
	2015, 1, 2, 21, 0, 0,
	tzinfo=datetime.timezone.utc)
	self.fetch_history_end = datetime.datetime(
	2015, 1, 2, 23, 0, 0,
	tzinfo=datetime.timezone.utc)

	self.fetch_history_duration = (self.fetch_history_end -
	self.fetch_history_date)

	self.fetch_history_data = {
	'status': True,
	'result': {'foo': 'bar'},
	'stdout': 'blabla',
	'stderr': 'blablabla',
	}

	self.entity1 = {
	'uuid': UUID('f96a7ec1-0058-4920-90cc-7327e4b5a4bf'),
	# GitHub users
	'parent': UUID('ad6df473-c1d2-4f40-bc58-2b091d4a750e'),
	'name': 'github:user:olasd',
	'type': 'person',
	'description': 'Nicolas Dandrimont',
	'homepage': 'http://example.com',
	'active': True,
	'generated': True,
	'lister_metadata': {
	# swh.lister.github
	'lister': '34bd6b1b-463f-43e5-a697-785107f598e4',
	'id': 12877,
	'type': 'user',
	'last_activity': '2015-11-03',
	},
	'metadata': None,
	'validity': [
	datetime.datetime(2015, 11, 3, 11, 0, 0,
	tzinfo=datetime.timezone.utc),
	]
	}

	self.entity1_query = {
	'lister': '34bd6b1b-463f-43e5-a697-785107f598e4',
	'id': 12877,
	'type': 'user',
	}

	self.entity2 = {
	'uuid': UUID('3903d075-32d6-46d4-9e29-0aef3612c4eb'),
	# GitHub users
	'parent': UUID('ad6df473-c1d2-4f40-bc58-2b091d4a750e'),
	'name': 'github:user:zacchiro',
	'type': 'person',
	'description': 'Stefano Zacchiroli',
	'homepage': 'http://example.com',
	'active': True,
	'generated': True,
	'lister_metadata': {
	# swh.lister.github
	'lister': '34bd6b1b-463f-43e5-a697-785107f598e4',
	'id': 216766,
	'type': 'user',
	'last_activity': '2015-11-03',
	},
	'metadata': None,
	'validity': [
	datetime.datetime(2015, 11, 3, 11, 0, 0,
	tzinfo=datetime.timezone.utc),
	]
	}

	self.entity3 = {
	'uuid': UUID('111df473-c1d2-4f40-bc58-2b091d4a7111'),
	# GitHub users
	'parent': UUID('222df473-c1d2-4f40-bc58-2b091d4a7222'),
	'name': 'github:user:ardumont',
	'type': 'person',
	'description': 'Antoine R. Dumont a.k.a tony',
	'homepage': 'https://ardumont.github.io',
	'active': True,
	'generated': True,
	'lister_metadata': {
	'lister': '34bd6b1b-463f-43e5-a697-785107f598e4',
	'id': 666,
	'type': 'user',
	'last_activity': '2016-01-15',
	},
	'metadata': None,
	'validity': [
	datetime.datetime(2015, 11, 3, 11, 0, 0,
	tzinfo=datetime.timezone.utc),
	]
	}

	self.entity4 = {
	'uuid': UUID('222df473-c1d2-4f40-bc58-2b091d4a7222'),
	# GitHub users
	'parent': None,
	'name': 'github:user:ToNyX',
	'type': 'person',
	'description': 'ToNyX',
	'homepage': 'https://ToNyX.github.io',
	'active': True,
	'generated': True,
	'lister_metadata': {
	'lister': '34bd6b1b-463f-43e5-a697-785107f598e4',
	'id': 999,
	'type': 'user',
	'last_activity': '2015-12-24',
	},
	'metadata': None,
	'validity': [
	datetime.datetime(2015, 11, 3, 11, 0, 0,
	tzinfo=datetime.timezone.utc),
	]
	}

	self.entity2_query = {
	'lister_metadata': {
	'lister': '34bd6b1b-463f-43e5-a697-785107f598e4',
	'id': 216766,
	'type': 'user',
	},
	}

	def tearDown(self):
	shutil.rmtree(self.objroot)

	self.cursor.execute("""SELECT table_name FROM information_schema.tables
	WHERE table_schema = %s""", ('public',))

	tables = set(table for (table,) in self.cursor.fetchall())
	tables -= {'dbversion', 'entity', 'entity_history', 'listable_entity',
	'fossology_license', 'indexer_configuration'}

	for table in tables:
	self.cursor.execute('truncate table %s cascade' % table)

	self.cursor.execute('delete from entity where generated=true')
	self.cursor.execute('delete from entity_history where generated=true')
	self.conn.commit()

	super().tearDown()

	@istest
	def check_config(self):
	self.assertTrue(self.storage.check_config(check_write=True))
	self.assertTrue(self.storage.check_config(check_write=False))

	@istest
	def content_add(self):
	cont = self.cont

	self.storage.content_add([cont])
	if hasattr(self.storage, 'objstorage'):
	self.assertIn(cont['sha1'], self.storage.objstorage)
	self.cursor.execute('SELECT sha1, sha1_git, sha256, length, status'
	' FROM content WHERE sha1 = %s',
	(cont['sha1'],))
	datum = self.cursor.fetchone()
	self.assertEqual(
	(datum[0].tobytes(), datum[1].tobytes(), datum[2].tobytes(),
	datum[3], datum[4]),
	(cont['sha1'], cont['sha1_git'], cont['sha256'],
	cont['length'], 'visible'))

	@istest
	def content_add_collision(self):
	cont1 = self.cont

	# create (corrupted) content with same sha1{,_git} but != sha256
	cont1b = cont1.copy()
	sha256_array = bytearray(cont1b['sha256'])
	sha256_array[0] += 1
	cont1b['sha256'] = bytes(sha256_array)

	with self.assertRaises(psycopg2.IntegrityError):
	self.storage.content_add([cont1, cont1b])

	@istest
	def skipped_content_add(self):
	cont = self.skipped_cont
	cont2 = self.skipped_cont2

	self.storage.content_add([cont])
	self.storage.content_add([cont2])

	self.cursor.execute('SELECT sha1, sha1_git, sha256, length, status,'
	'reason FROM skipped_content ORDER BY sha1_git')

	datum = self.cursor.fetchone()
	self.assertEqual(
	(datum[0], datum[1].tobytes(), datum[2],
	datum[3], datum[4], datum[5]),
	(None, cont['sha1_git'], None,
	cont['length'], 'absent', 'Content too long'))

	datum2 = self.cursor.fetchone()
	self.assertEqual(
	(datum2[0], datum2[1].tobytes(), datum2[2],
	datum2[3], datum2[4], datum2[5]),
	(None, cont2['sha1_git'], None,
	cont2['length'], 'absent', 'Content too long'))

	@istest
	def content_missing(self):
	cont2 = self.cont2
	missing_cont = self.missing_cont
	self.storage.content_add([cont2])
	gen = self.storage.content_missing([cont2, missing_cont])

	self.assertEqual(list(gen), [missing_cont['sha1']])

	@istest
	def content_missing_per_sha1(self):
	# given
	cont2 = self.cont2
	missing_cont = self.missing_cont
	self.storage.content_add([cont2])
	# when
	gen = self.storage.content_missing_per_sha1([cont2['sha1'],
	missing_cont['sha1']])

	# then
	self.assertEqual(list(gen), [missing_cont['sha1']])

	@istest
	def content_get_metadata(self):
	cont1 = self.cont.copy()
	cont2 = self.cont2.copy()

	self.storage.content_add([cont1, cont2])

	gen = self.storage.content_get_metadata([cont1['sha1'], cont2['sha1']])

	# we only retrieve the metadata
	cont1.pop('data')
	cont2.pop('data')

	self.assertEqual(list(gen), [cont1, cont2])

	@istest
	def content_get_metadata_missing_sha1(self):
	cont1 = self.cont.copy()
	cont2 = self.cont2.copy()

	missing_cont = self.missing_cont.copy()

	self.storage.content_add([cont1, cont2])

	gen = self.storage.content_get_metadata([missing_cont['sha1']])

	# All the metadata keys are None
	missing_cont.pop('data')
	for key in list(missing_cont):
	if key != 'sha1':
	missing_cont[key] = None

	self.assertEqual(list(gen), [missing_cont])

	@istest
	def directory_get(self):
	# given
	init_missing = list(self.storage.directory_missing([self.dir['id']]))
	self.assertEqual([self.dir['id']], init_missing)

	self.storage.directory_add([self.dir])

	# when
	actual_dirs = list(self.storage.directory_get([self.dir['id']]))

	self.assertEqual(len(actual_dirs), 1)

	dir0 = actual_dirs[0]
	self.assertEqual(dir0['id'], self.dir['id'])
	# ids are generated so non deterministic value
	self.assertEqual(len(dir0['file_entries']), 1)
	self.assertEqual(len(dir0['dir_entries']), 1)
	self.assertIsNone(dir0['rev_entries'])

	after_missing = list(self.storage.directory_missing([self.dir['id']]))
	self.assertEqual([], after_missing)

	@istest
	def directory_add(self):
	init_missing = list(self.storage.directory_missing([self.dir['id']]))
	self.assertEqual([self.dir['id']], init_missing)

	self.storage.directory_add([self.dir])

	stored_data = list(self.storage.directory_ls(self.dir['id']))

	data_to_store = [{
	'dir_id': self.dir['id'],
	'type': ent['type'],
	'target': ent['target'],
	'name': ent['name'],
	'perms': ent['perms'],
	'status': None,
	'sha1': None,
	'sha1_git': None,
	'sha256': None,
	}
	for ent in sorted(self.dir['entries'], key=lambda ent: ent['name'])
	]

	self.assertEqual(data_to_store, stored_data)

	after_missing = list(self.storage.directory_missing([self.dir['id']]))
	self.assertEqual([], after_missing)

	@istest
	def directory_entry_get_by_path(self):
	# given
	init_missing = list(self.storage.directory_missing([self.dir3['id']]))
	self.assertEqual([self.dir3['id']], init_missing)

	self.storage.directory_add([self.dir3])

	expected_entries = [
	{
	'dir_id': self.dir3['id'],
	'name': b'foo',
	'type': 'file',
	'target': self.cont['sha1_git'],
	'sha1': None,
	'sha1_git': None,
	'sha256': None,
	'status': None,
	'perms': 0o644,
	},
	{
	'dir_id': self.dir3['id'],
	'name': b'bar',
	'type': 'dir',
	'target': b'12345678901234560000',
	'sha1': None,
	'sha1_git': None,
	'sha256': None,
	'status': None,
	'perms': 0o2000,
	},
	{
	'dir_id': self.dir3['id'],
	'name': b'hello',
	'type': 'file',
	'target': b'12345678901234567890',
	'sha1': None,
	'sha1_git': None,
	'sha256': None,
	'status': None,
	'perms': 0o644,
	},
	]

	# when (all must be found here)
	for entry, expected_entry in zip(self.dir3['entries'],
	expected_entries):
	actual_entry = self.storage.directory_entry_get_by_path(
	self.dir3['id'],
	[entry['name']])
	self.assertEqual(actual_entry, expected_entry)

	# when (nothing should be found here since self.dir is not persisted.)
	for entry in self.dir['entries']:
	actual_entry = self.storage.directory_entry_get_by_path(
	self.dir['id'],
	[entry['name']])
	self.assertIsNone(actual_entry)

	@istest
	def revision_add(self):
	init_missing = self.storage.revision_missing([self.revision['id']])
	self.assertEqual([self.revision['id']], list(init_missing))

	self.storage.revision_add([self.revision])

	end_missing = self.storage.revision_missing([self.revision['id']])
	self.assertEqual([], list(end_missing))

	def cache_content_revision_objects(self):
	self.storage.content_add([self.cont, self.cont2, self.cont3])
	directory = {
	'id': b'4\x013\x422\x531\x000\xf51\xe62\xa73\xff7\xc3\xa90',
	'entries': [
	{
	'name': b'bar',
	'type': 'file',
	'target': self.cont2['sha1_git'],
	'perms': 0o644,
	},
	{
	'name': b'foo',
	'type': 'file',
	'target': self.cont['sha1_git'],
	'perms': 0o644,
	},
	{
	'name': b'bar\xc3',
	'type': 'dir',
	'target': b'12345678901234567890',
	'perms': 0o2000,
	},
	],
	}
	directory2 = copy.deepcopy(directory)
	directory2['id'] = (directory2['id'][:-1] +
	bytes([(directory2['id'][-1] + 1) % 256]))
	directory2['entries'][1] = {
	'name': b'foo',
	'type': 'file',
	'target': self.cont3['sha1_git'],
	'perms': 0o644,
	}

	self.storage.directory_add([directory, directory2])
	revision = self.revision.copy()
	revision['directory'] = directory['id']
	revision2 = copy.deepcopy(revision)
	revision2['parents'] = [revision['id']]
	revision2['directory'] = directory2['id']
	revision2['id'] = (revision2['id'][:-1] +
	bytes([(revision2['id'][-1] + 1) % 256]))
	self.storage.revision_add([revision, revision2])
	return (directory, directory2, revision, revision2)

	@istest
	def cache_content_revision_add(self):
	# Create a real arborescence tree (contents + directory) and a
	# revision targeting that directory.
	# Assert the cache is empty for that revision
	# Then create that revision
	# Trigger the cache population for that revision
	# Assert the cache now contains information for that revision
	# Trigger again the cache population for that revision
	# Assert the cache is not modified

	# given ()
	(directory, directory2,
	revision, revision2) = self.cache_content_revision_objects()

	# assert nothing in cache yet
	count_query = '''select count(*)
	from cache_content_revision'''
	self.cursor.execute(count_query)
	ret = self.cursor.fetchone()
	self.assertEqual(ret, (0, ))

	# when, triggered the first time, we cache the revision
	self.storage.cache_content_revision_add([revision['id']])
	# the second time, we do nothing as this is already done
	self.storage.cache_content_revision_add([revision['id']])

	# then
	self.cursor.execute(count_query)
	ret = self.cursor.fetchone()
	# only 2 contents exists for that revision (the second call to
	# revision_cache discards as the revision is already cached)
	self.assertEqual(ret, (2, ))

	self.cursor.execute('select * from cache_content_revision')
	ret = self.cursor.fetchall()

	expected_cache_entries = [
	(directory['entries'][0]['target'], False,
	[[revision['id'], directory['entries'][0]['name']]]),
	(directory['entries'][1]['target'], False,
	[[revision['id'], directory['entries'][1]['name']]])
	]
	for i, expected_entry in enumerate(expected_cache_entries):
	ret_entry = (ret[i][0].tobytes(), ret[i][1],
	[[ret[i][2][0][0].tobytes(),
	ret[i][2][0][1].tobytes()]])
	self.assertEquals(ret_entry, expected_entry)

	@istest
	def cache_content_revision_add_twice(self):
	# given ()
	(directory, directory2,
	revision, revision2) = self.cache_content_revision_objects()

	# assert nothing in cache yet
	count_query = '''select count(*)
	from cache_content_revision'''
	self.cursor.execute(count_query)
	ret = self.cursor.fetchone()
	self.assertEqual(ret, (0, ))

	# when, triggered the first time, we cache the revision
	self.storage.cache_content_revision_add([revision['id']])
	# the second time, we do nothing as this is already done
	self.storage.cache_content_revision_add([revision2['id']])

	# then
	self.cursor.execute('select * from cache_content_revision')
	cache_entries = {
	content.tobytes(): [[rev.tobytes(), path.tobytes()]
	for rev, path in rev_paths]
	for content, blacklisted, rev_paths in self.cursor.fetchall()
	}

	self.assertEquals(len(cache_entries), 3)
	self.assertEquals(len(cache_entries[self.cont['sha1_git']]), 1)
	self.assertEquals(len(cache_entries[self.cont2['sha1_git']]), 2)
	self.assertEquals(len(cache_entries[self.cont3['sha1_git']]), 1)

	@istest
	def cache_content_get_all(self):
	# given
	(directory, directory2,
	revision, revision2) = self.cache_content_revision_objects()

	# assert nothing in cache yet
	test_query = '''select sha1, sha1_git, sha256, ccr.revision_paths
	from cache_content_revision ccr
	inner join content c on c.sha1_git=ccr.content'''

	self.storage.cache_content_revision_add([revision['id']])
	self.cursor.execute(test_query, (revision['id'],))
	ret = list(cursor_to_bytes(self.cursor))

	self.assertEqual(len(ret), 2)

	expected_contents = []
	for entry in ret:
	expected_contents.append(dict(
	zip(['sha1', 'sha1_git', 'sha256', 'revision_paths'], entry)))

	# 1. default filters gives everything
	actual_cache_contents = list(self.storage.cache_content_get_all())

	self.assertEquals(actual_cache_contents, expected_contents)

	@istest
	def cache_content_get(self):
	# given
	(directory, directory2,
	revision, revision2) = self.cache_content_revision_objects()

	# assert nothing in cache yet
	test_query = '''select c.sha1, c.sha1_git, c.sha256, ccr.revision_paths
	from cache_content_revision ccr
	inner join content c on c.sha1_git=ccr.content
	where ccr.content=%s'''

	self.storage.cache_content_revision_add([revision['id']])
	self.cursor.execute(test_query, (self.cont2['sha1_git'],))
	ret = list(cursor_to_bytes(self.cursor))[0]

	self.assertIsNotNone(ret)

	expected_content = dict(
	zip(['sha1', 'sha1_git', 'sha256', 'revision_paths'], ret))

	# when
	actual_cache_content = self.storage.cache_content_get(self.cont2)

	# then
	self.assertEquals(actual_cache_content, expected_content)

	@istest
	def revision_log(self):
	# given
	# self.revision4 -is-child-of-> self.revision3
	self.storage.revision_add([self.revision3,
	self.revision4])

	# when
	actual_results = list(self.storage.revision_log(
	[self.revision4['id']]))

	# hack: ids generated
	for actual_result in actual_results:
	del actual_result['author']['id']
	del actual_result['committer']['id']

	self.assertEqual(len(actual_results), 2) # rev4 -child-> rev3
	self.assertEquals(actual_results[0], self.revision4)
	self.assertEquals(actual_results[1], self.revision3)

	@istest
	def revision_log_with_limit(self):
	# given
	# self.revision4 -is-child-of-> self.revision3
	self.storage.revision_add([self.revision3,
	self.revision4])
	actual_results = list(self.storage.revision_log(
	[self.revision4['id']], 1))

	# hack: ids generated
	for actual_result in actual_results:
	del actual_result['author']['id']
	del actual_result['committer']['id']

	self.assertEqual(len(actual_results), 1)
	self.assertEquals(actual_results[0], self.revision4)

	@istest
	def revision_log_by(self):
	# given
	origin_id = self.storage.origin_add_one(self.origin2)
	self.storage.revision_add([self.revision3,
	self.revision4])

	# occurrence3 targets 'revision4'
	# with branch 'master' and origin origin_id
	occurrence3 = self.occurrence3.copy()
	date_visit1 = self.date_visit3
	origin_visit1 = self.storage.origin_visit_add(origin_id,
	date_visit1)
	occurrence3.update({
	'origin': origin_id,
	'target': self.revision4['id'],
	'visit': origin_visit1['visit'],
	})

	self.storage.occurrence_add([occurrence3])

	# self.revision4 -is-child-of-> self.revision3
	# when
	actual_results = list(self.storage.revision_log_by(
	origin_id,
	branch_name=occurrence3['branch'],
	timestamp=date_visit1))

	# hack: ids generated
	for actual_result in actual_results:
	del actual_result['author']['id']
	del actual_result['committer']['id']

	self.assertEqual(len(actual_results), 2)
	self.assertEquals(actual_results[0], self.revision4)
	self.assertEquals(actual_results[1], self.revision3)

	# when - 2
	actual_results = list(self.storage.revision_log_by(
	origin_id,
	branch_name=None,
	timestamp=None,
	limit=1))

	# then
	for actual_result in actual_results:
	del actual_result['author']['id']
	del actual_result['committer']['id']

	self.assertEqual(len(actual_results), 1)
	self.assertEquals(actual_results[0], self.revision4)

	# when - 3 (revision not found)

	actual_res = list(self.storage.revision_log_by(
	origin_id,
	branch_name='inexistant-branch',
	timestamp=None))

	self.assertEquals(actual_res, [])

	@staticmethod
	def _short_revision(revision):
	return [revision['id'], revision['parents']]

	@istest
	def revision_shortlog(self):
	# given
	# self.revision4 -is-child-of-> self.revision3
	self.storage.revision_add([self.revision3,
	self.revision4])

	# when
	actual_results = list(self.storage.revision_shortlog(
	[self.revision4['id']]))

	self.assertEqual(len(actual_results), 2) # rev4 -child-> rev3
	self.assertEquals(list(actual_results[0]),
	self._short_revision(self.revision4))
	self.assertEquals(list(actual_results[1]),
	self._short_revision(self.revision3))

	@istest
	def revision_shortlog_with_limit(self):
	# given
	# self.revision4 -is-child-of-> self.revision3
	self.storage.revision_add([self.revision3,
	self.revision4])
	actual_results = list(self.storage.revision_shortlog(
	[self.revision4['id']], 1))

	self.assertEqual(len(actual_results), 1)
	self.assertEquals(list(actual_results[0]),
	self._short_revision(self.revision4))

	@istest
	def revision_get(self):
	self.storage.revision_add([self.revision])

	actual_revisions = list(self.storage.revision_get(
	[self.revision['id'], self.revision2['id']]))

	# when
	del actual_revisions[0]['author']['id'] # hack: ids are generated
	del actual_revisions[0]['committer']['id']

	self.assertEqual(len(actual_revisions), 2)
	self.assertEqual(actual_revisions[0], self.revision)
	self.assertIsNone(actual_revisions[1])

	@istest
	def revision_get_no_parents(self):
	self.storage.revision_add([self.revision3])

	get = list(self.storage.revision_get([self.revision3['id']]))

	self.assertEqual(len(get), 1)
	self.assertEqual(get[0]['parents'], []) # no parents on this one

	@istest
	def revision_get_by(self):
	# given
	self.storage.content_add([self.cont2])
	self.storage.directory_add([self.dir2]) # point to self.cont
	self.storage.revision_add([self.revision2]) # points to self.dir
	origin_id = self.storage.origin_add_one(self.origin2)

	# occurrence2 points to 'revision2' with branch 'master', we
	# need to point to the right origin
	occurrence2 = self.occurrence2.copy()
	date_visit1 = self.date_visit2
	origin_visit1 = self.storage.origin_visit_add(origin_id, date_visit1)
	occurrence2.update({
	'origin': origin_id,
	'visit': origin_visit1['visit'],
	})
	self.storage.occurrence_add([occurrence2])

	# we want only revision 2
	expected_revisions = list(self.storage.revision_get(
	[self.revision2['id']]))

	# when
	actual_results = list(self.storage.revision_get_by(
	origin_id,
	occurrence2['branch'],
	None))

	self.assertEqual(actual_results[0], expected_revisions[0])

	# when (with no branch filtering, it's still ok)
	actual_results = list(self.storage.revision_get_by(
	origin_id,
	None,
	None))

	self.assertEqual(actual_results[0], expected_revisions[0])

	@istest
	def revision_get_by_multiple_occurrence(self):
	# 2 occurrences pointing to 2 different revisions
	# each occurence have 1 hour delta
	# the api must return the revision whose occurrence is the nearest.

	# given
	self.storage.content_add([self.cont2])
	self.storage.directory_add([self.dir2])
	self.storage.revision_add([self.revision2, self.revision3])
	origin_id = self.storage.origin_add_one(self.origin2)

	# occurrence2 points to 'revision2' with branch 'master', we
	# need to point to the right origin
	date_visit1 = self.date_visit2
	origin_visit1 = self.storage.origin_visit_add(origin_id, date_visit1)
	occurrence2 = self.occurrence2.copy()
	occurrence2.update({
	'origin': origin_id,
	'visit': origin_visit1['visit']
	})

	dt = datetime.timedelta(days=1)
	date_visit2 = date_visit1 + dt
	origin_visit2 = self.storage.origin_visit_add(origin_id, date_visit2)
	occurrence3 = self.occurrence2.copy()
	occurrence3.update({
	'origin': origin_id,
	'visit': origin_visit2['visit'],
	'target': self.revision3['id'],
	})
	# 2 occurrences on same revision with lower validity date with 1h delta
	self.storage.occurrence_add([occurrence2])
	self.storage.occurrence_add([occurrence3])

	# when
	actual_results0 = list(self.storage.revision_get_by(
	origin_id,
	occurrence2['branch'],
	date_visit1))

	# hack: ids are generated
	del actual_results0[0]['author']['id']
	del actual_results0[0]['committer']['id']

	self.assertEquals(len(actual_results0), 1)
	self.assertEqual(actual_results0, [self.revision2])

	# when
	actual_results1 = list(self.storage.revision_get_by(
	origin_id,
	occurrence2['branch'],
	date_visit1 + dt/3)) # closer to first visit

	# hack: ids are generated
	del actual_results1[0]['author']['id']
	del actual_results1[0]['committer']['id']

	self.assertEquals(len(actual_results1), 1)
	self.assertEqual(actual_results1, [self.revision2])

	# when
	actual_results2 = list(self.storage.revision_get_by(
	origin_id,
	occurrence2['branch'],
	date_visit1 + 2*dt/3)) # closer to second visit

	del actual_results2[0]['author']['id']
	del actual_results2[0]['committer']['id']

	self.assertEquals(len(actual_results2), 1)
	self.assertEqual(actual_results2, [self.revision3])

	# when
	actual_results3 = list(self.storage.revision_get_by(
	origin_id,
	occurrence3['branch'],
	date_visit2))

	# hack: ids are generated
	del actual_results3[0]['author']['id']
	del actual_results3[0]['committer']['id']

	self.assertEquals(len(actual_results3), 1)
	self.assertEqual(actual_results3, [self.revision3])

	# when
	actual_results4 = list(self.storage.revision_get_by(
	origin_id,
	None,
	None))

	for actual_result in actual_results4:
	del actual_result['author']['id']
	del actual_result['committer']['id']

	self.assertEquals(len(actual_results4), 2)
	self.assertCountEqual(actual_results4,
	[self.revision3, self.revision2])

	@istest
	def release_add(self):
	init_missing = self.storage.release_missing([self.release['id'],
	self.release2['id']])
	self.assertEqual([self.release['id'], self.release2['id']],
	list(init_missing))

	self.storage.release_add([self.release, self.release2])

	end_missing = self.storage.release_missing([self.release['id'],
	self.release2['id']])
	self.assertEqual([], list(end_missing))

	@istest
	def release_get(self):
	# given
	self.storage.release_add([self.release, self.release2])

	# when
	actual_releases = list(self.storage.release_get([self.release['id'],
	self.release2['id']]))

	# then
	for actual_release in actual_releases:
	del actual_release['author']['id'] # hack: ids are generated

	self.assertEquals([self.release, self.release2],
	[actual_releases[0], actual_releases[1]])

	@istest
	def release_get_by(self):
	# given
	self.storage.revision_add([self.revision2]) # points to self.dir
	self.storage.release_add([self.release3])
	origin_id = self.storage.origin_add_one(self.origin2)

	# occurrence2 points to 'revision2' with branch 'master', we
	# need to point to the right origin
	origin_visit = self.storage.origin_visit_add(origin_id,
	self.date_visit2)
	occurrence2 = self.occurrence2.copy()
	occurrence2.update({
	'origin': origin_id,
	'visit': origin_visit['visit'],
	})

	self.storage.occurrence_add([occurrence2])

	# we want only revision 2
	expected_releases = list(self.storage.release_get(
	[self.release3['id']]))

	# when
	actual_results = list(self.storage.release_get_by(
	occurrence2['origin']))

	# then
	self.assertEqual(actual_results[0], expected_releases[0])

	@istest
	def origin_add_one(self):
	origin0 = self.storage.origin_get(self.origin)
	self.assertIsNone(origin0)

	id = self.storage.origin_add_one(self.origin)

	actual_origin = self.storage.origin_get({'url': self.origin['url'],
	'type': self.origin['type']})
	self.assertEqual(actual_origin['id'], id)

	id2 = self.storage.origin_add_one(self.origin)

	self.assertEqual(id, id2)

	@istest
	def origin_add(self):
	origin0 = self.storage.origin_get(self.origin)
	self.assertIsNone(origin0)

	id1, id2 = self.storage.origin_add([self.origin, self.origin2])

	actual_origin = self.storage.origin_get({
	'url': self.origin['url'],
	'type': self.origin['type'],
	})
	self.assertEqual(actual_origin['id'], id1)

	actual_origin2 = self.storage.origin_get({
	'url': self.origin2['url'],
	'type': self.origin2['type'],
	})
	self.assertEqual(actual_origin2['id'], id2)

	@istest
	def origin_add_twice(self):
	add1 = self.storage.origin_add([self.origin, self.origin2])
	add2 = self.storage.origin_add([self.origin, self.origin2])

	self.assertEqual(add1, add2)

	@istest
	def origin_get(self):
	self.assertIsNone(self.storage.origin_get(self.origin))
	id = self.storage.origin_add_one(self.origin)

	# lookup per type and url (returns id)
	actual_origin0 = self.storage.origin_get({'url': self.origin['url'],
	'type': self.origin['type']})
	self.assertEqual(actual_origin0['id'], id)

	# lookup per id (returns dict)
	actual_origin1 = self.storage.origin_get({'id': id})

	self.assertEqual(actual_origin1, {'id': id,
	'type': self.origin['type'],
	'url': self.origin['url'],
	'lister': None,
	'project': None})

	@istest
	def origin_visit_add(self):
	# given
	self.assertIsNone(self.storage.origin_get(self.origin2))

	origin_id = self.storage.origin_add_one(self.origin2)
	self.assertIsNotNone(origin_id)

	# when
	origin_visit1 = self.storage.origin_visit_add(
	origin_id,
	ts=self.date_visit2)

	# then
	self.assertEquals(origin_visit1['origin'], origin_id)
	self.assertIsNotNone(origin_visit1['visit'])
	self.assertTrue(origin_visit1['visit'] > 0)

	actual_origin_visits = list(self.storage.origin_visit_get(origin_id))
	self.assertEquals(actual_origin_visits,
	[{
	'origin': origin_id,
	'date': self.date_visit2,
	'visit': origin_visit1['visit'],
	'status': 'ongoing',
	'metadata': None,
	}])

	@istest
	def origin_visit_update(self):
	# given
	origin_id = self.storage.origin_add_one(self.origin2)
	origin_id2 = self.storage.origin_add_one(self.origin)

	origin_visit1 = self.storage.origin_visit_add(
	origin_id,
	ts=self.date_visit2)

	origin_visit2 = self.storage.origin_visit_add(
	origin_id,
	ts=self.date_visit3)

	origin_visit3 = self.storage.origin_visit_add(
	origin_id2,
	ts=self.date_visit3)

	# when
	visit1_metadata = {
	'contents': 42,
	'directories': 22,
	}
	self.storage.origin_visit_update(
	origin_id, origin_visit1['visit'], status='full',
	metadata=visit1_metadata)
	self.storage.origin_visit_update(origin_id2, origin_visit3['visit'],
	status='partial')

	# then
	actual_origin_visits = list(self.storage.origin_visit_get(origin_id))
	self.assertEquals(actual_origin_visits,
	[{
	'origin': origin_visit2['origin'],
	'date': self.date_visit2,
	'visit': origin_visit1['visit'],
	'status': 'full',
	'metadata': visit1_metadata,
	},
	{
	'origin': origin_visit2['origin'],
	'date': self.date_visit3,
	'visit': origin_visit2['visit'],
	'status': 'ongoing',
	'metadata': None,
	}])

	actual_origin_visits2 = list(self.storage.origin_visit_get(origin_id2))
	self.assertEquals(actual_origin_visits2,
	[{
	'origin': origin_visit3['origin'],
	'date': self.date_visit3,
	'visit': origin_visit3['visit'],
	'status': 'partial',
	'metadata': None,
	}])

	@istest
	def origin_visit_get_by(self):
	origin_id = self.storage.origin_add_one(self.origin2)
	origin_id2 = self.storage.origin_add_one(self.origin)

	origin_visit1 = self.storage.origin_visit_add(
	origin_id,
	ts=self.date_visit2)

	occurrence2 = self.occurrence2.copy()
	occurrence2.update({
	'origin': origin_id,
	'visit': origin_visit1['visit'],
	})

	self.storage.occurrence_add([occurrence2])

	# Add some other {origin, visit} entries
	self.storage.origin_visit_add(origin_id, ts=self.date_visit3)
	self.storage.origin_visit_add(origin_id2, ts=self.date_visit3)

	# when
	visit1_metadata = {
	'contents': 42,
	'directories': 22,
	}

	self.storage.origin_visit_update(
	origin_id, origin_visit1['visit'], status='full',
	metadata=visit1_metadata)

	expected_origin_visit = origin_visit1.copy()
	expected_origin_visit.update({
	'origin': origin_id,
	'visit': origin_visit1['visit'],
	'date': self.date_visit2,
	'metadata': visit1_metadata,
	'status': 'full',
	'occurrences': {
	occurrence2['branch']: {
	'target': occurrence2['target'],
	'target_type': occurrence2['target_type'],
	}
	}
	})

	# when
	actual_origin_visit1 = self.storage.origin_visit_get_by(
	origin_visit1['origin'], origin_visit1['visit'])

	# then
	self.assertEquals(actual_origin_visit1, expected_origin_visit)

	@istest
	def origin_visit_get_by_no_result(self):
	# No result
	actual_origin_visit = self.storage.origin_visit_get_by(
	10, 999)

	self.assertIsNone(actual_origin_visit)

	@istest
	def occurrence_add(self):
	occur = self.occurrence.copy()

	origin_id = self.storage.origin_add_one(self.origin2)
	date_visit1 = self.date_visit1
	origin_visit1 = self.storage.origin_visit_add(origin_id, date_visit1)

	revision = self.revision.copy()
	revision['id'] = occur['target']
	self.storage.revision_add([revision])

	occur.update({
	'origin': origin_id,
	'visit': origin_visit1['visit'],
	})
	self.storage.occurrence_add([occur])

	test_query = '''
	with indiv_occurrences as (
	select origin, branch, target, target_type, unnest(visits) as visit
	from occurrence_history
	)
	select origin, branch, target, target_type, date
	from indiv_occurrences
	left join origin_visit using(origin, visit)
	order by origin, date'''

	self.cursor.execute(test_query)
	ret = self.cursor.fetchall()
	self.assertEqual(len(ret), 1)
	self.assertEqual(
	(ret[0][0], ret[0][1].tobytes(), ret[0][2].tobytes(),
	ret[0][3], ret[0][4]),
	(occur['origin'], occur['branch'], occur['target'],
	occur['target_type'], self.date_visit1))

	date_visit2 = date_visit1 + datetime.timedelta(hours=10)

	origin_visit2 = self.storage.origin_visit_add(origin_id, date_visit2)
	occur2 = occur.copy()
	occur2.update({
	'visit': origin_visit2['visit'],
	})
	self.storage.occurrence_add([occur2])

	self.cursor.execute(test_query)
	ret = self.cursor.fetchall()
	self.assertEqual(len(ret), 2)
	self.assertEqual(
	(ret[0][0], ret[0][1].tobytes(), ret[0][2].tobytes(),
	ret[0][3], ret[0][4]),
	(occur['origin'], occur['branch'], occur['target'],
	occur['target_type'], date_visit1))
	self.assertEqual(
	(ret[1][0], ret[1][1].tobytes(), ret[1][2].tobytes(),
	ret[1][3], ret[1][4]),
	(occur2['origin'], occur2['branch'], occur2['target'],
	occur2['target_type'], date_visit2))

	@istest
	def occurrence_get(self):
	# given
	occur = self.occurrence.copy()
	origin_id = self.storage.origin_add_one(self.origin2)
	origin_visit1 = self.storage.origin_visit_add(origin_id,
	self.date_visit1)

	revision = self.revision.copy()
	revision['id'] = occur['target']
	self.storage.revision_add([revision])

	occur.update({
	'origin': origin_id,
	'visit': origin_visit1['visit'],
	})
	self.storage.occurrence_add([occur])
	self.storage.occurrence_add([occur])

	# when
	actual_occurrence = list(self.storage.occurrence_get(origin_id))

	# then
	expected_occurrence = self.occurrence.copy()
	expected_occurrence.update({
	'origin': origin_id
	})
	self.assertEquals(len(actual_occurrence), 1)
	self.assertEquals(actual_occurrence[0], expected_occurrence)

	def _trigger_cache_provenance(self, origin_visit):
	"""Trigger cache population for cache_content_revision.

	"""
	ret = list(self.storage.cache_revision_origin_add(
	origin_visit['origin'],
	origin_visit['visit'],
	))

	for revision_id in ret:
	self.storage.cache_content_revision_add([revision_id])

	return ret

	@istest
	def content_find_provenance_with_present_content(self):
	# 1. with something to find
	# given
	origin_id = self.storage.origin_add_one(self.origin2)
	self.storage.content_add([self.cont2])
	self.storage.directory_add([self.dir2]) # point to self.cont
	self.storage.revision_add([self.revision3]) # points to self.dir

	occurrence = self.occurrence3.copy()
	occurrence['target'] = self.revision3['id']
	origin_visit1 = self.storage.origin_visit_add(origin_id,
	self.date_visit2)
	occurrence.update({
	'origin': origin_id,
	'visit': origin_visit1['visit'],
	})

	self.storage.occurrence_add([occurrence])

	# Trigger cache population for cache_content_revision
	cached_revisions = self._trigger_cache_provenance(origin_visit1)

	self.assertIn(self.revision3['id'], cached_revisions)

	# when
	occs = list(self.storage.content_find_provenance(
	{'sha1': self.cont2['sha1']}))

	# then
	self.assertEquals(len(occs), 1)
	self.assertEquals(occs[0]['origin'], origin_visit1['origin'])
	self.assertEquals(occs[0]['visit'], origin_visit1['visit'])
	self.assertEquals(occs[0]['revision'], self.revision3['id'])
	self.assertEquals(occs[0]['path'], self.dir2['entries'][0]['name'])

	occs2 = list(self.storage.content_find_provenance(
	{'sha1_git': self.cont2['sha1_git']}))

	self.assertEquals(len(occs2), 1)
	self.assertEquals(occs2[0]['origin'], origin_visit1['origin'])
	self.assertEquals(occs2[0]['visit'], origin_visit1['visit'])
	self.assertEquals(occs2[0]['revision'], self.revision3['id'])
	self.assertEquals(occs2[0]['path'], self.dir2['entries'][0]['name'])

	occs3 = list(self.storage.content_find_provenance(
	{'sha256': self.cont2['sha256']}))

	self.assertEquals(len(occs3), 1)
	self.assertEquals(occs3[0]['origin'], origin_visit1['origin'])
	self.assertEquals(occs3[0]['visit'], origin_visit1['visit'])
	self.assertEquals(occs3[0]['revision'], self.revision3['id'])
	self.assertEquals(occs3[0]['path'], self.dir2['entries'][0]['name'])

	@istest
	def content_find_provenance_with_non_present_content(self):
	# 1. with something that does not exist
	missing_cont = self.missing_cont

	occ = list(self.storage.content_find_provenance(
	{'sha1': missing_cont['sha1']}))

	self.assertEquals(occ, [],
	"Content does not exist so no occurrence")

	# 2. with something that does not exist
	occ = list(self.storage.content_find_provenance(
	{'sha1_git': missing_cont['sha1_git']}))

	self.assertEquals(occ, [],
	"Content does not exist so no occurrence")

	# 3. with something that does not exist
	occ = list(self.storage.content_find_provenance(
	{'sha256': missing_cont['sha256']}))

	self.assertEquals(occ, [],
	"Content does not exist so no occurrence")

	@istest
	def content_find_occurrence_bad_input(self):
	# 1. with bad input
	with self.assertRaises(ValueError) as cm:
	list(self.storage.content_find_provenance({})) # empty is bad
	self.assertIn('content keys', cm.exception.args[0])

	# 2. with bad input
	with self.assertRaises(ValueError) as cm:
	list(self.storage.content_find_provenance(
	{'unknown-sha1': 'something'})) # not the right key
	self.assertIn('content keys', cm.exception.args[0])

	@istest
	def entity_get_from_lister_metadata(self):
	self.storage.entity_add([self.entity1])

	fetched_entities = list(
	self.storage.entity_get_from_lister_metadata(
	[self.entity1_query, self.entity2_query]))

	# Entity 1 should have full metadata, with last_seen/last_id instead
	# of validity
	entity1 = self.entity1.copy()
	entity1['last_seen'] = entity1['validity'][0]
	del fetched_entities[0]['last_id']
	del entity1['validity']
	# Entity 2 should have no metadata
	entity2 = {
	'uuid': None,
	'lister_metadata': self.entity2_query.copy(),
	}

	self.assertEquals(fetched_entities, [entity1, entity2])

	@istest
	def entity_get_from_lister_metadata_twice(self):
	self.storage.entity_add([self.entity1])

	fetched_entities1 = list(
	self.storage.entity_get_from_lister_metadata(
	[self.entity1_query]))
	fetched_entities2 = list(
	self.storage.entity_get_from_lister_metadata(
	[self.entity1_query]))

	self.assertEquals(fetched_entities1, fetched_entities2)

	@istest
	def entity_get(self):
	# given
	self.storage.entity_add([self.entity4])
	self.storage.entity_add([self.entity3])

	# when: entity3 -child-of-> entity4
	actual_entity3 = list(self.storage.entity_get(self.entity3['uuid']))

	self.assertEquals(len(actual_entity3), 2)
	# remove dynamic data (modified by db)
	entity3 = self.entity3.copy()
	entity4 = self.entity4.copy()
	del entity3['validity']
	del entity4['validity']
	del actual_entity3[0]['last_seen']
	del actual_entity3[0]['last_id']
	del actual_entity3[1]['last_seen']
	del actual_entity3[1]['last_id']
	self.assertEquals(actual_entity3, [entity3, entity4])

	# when: entity4 only child
	actual_entity4 = list(self.storage.entity_get(self.entity4['uuid']))

	self.assertEquals(len(actual_entity4), 1)
	# remove dynamic data (modified by db)
	entity4 = self.entity4.copy()
	del entity4['validity']
	del actual_entity4[0]['last_id']
	del actual_entity4[0]['last_seen']

	self.assertEquals(actual_entity4, [entity4])

	@istest
	def entity_get_one(self):
	# given
	self.storage.entity_add([self.entity3, self.entity4])

	# when: entity3 -child-of-> entity4
	actual_entity3 = self.storage.entity_get_one(self.entity3['uuid'])

	# remove dynamic data (modified by db)
	entity3 = self.entity3.copy()
	del entity3['validity']
	del actual_entity3['last_seen']
	del actual_entity3['last_id']
	self.assertEquals(actual_entity3, entity3)

	@istest
	def stat_counters(self):
	expected_keys = ['content', 'directory', 'directory_entry_dir',
	'occurrence', 'origin', 'person', 'revision']
	counters = self.storage.stat_counters()

	self.assertTrue(set(expected_keys) <= set(counters))
	self.assertIsInstance(counters[expected_keys[0]], int)

	@istest
	def content_find_with_present_content(self):
	# 1. with something to find
	cont = self.cont
	self.storage.content_add([cont])

	actually_present = self.storage.content_find({'sha1': cont['sha1']})

	actually_present.pop('ctime')
	self.assertEqual(actually_present, {
	'sha1': cont['sha1'],
	'sha256': cont['sha256'],
	'sha1_git': cont['sha1_git'],
	'length': cont['length'],
	'status': 'visible'
	})

	# 2. with something to find
	actually_present = self.storage.content_find(
	{'sha1_git': cont['sha1_git']})

	actually_present.pop('ctime')
	self.assertEqual(actually_present, {
	'sha1': cont['sha1'],
	'sha256': cont['sha256'],
	'sha1_git': cont['sha1_git'],
	'length': cont['length'],
	'status': 'visible'
	})

	# 3. with something to find
	actually_present = self.storage.content_find(
	{'sha256': cont['sha256']})

	actually_present.pop('ctime')
	self.assertEqual(actually_present, {
	'sha1': cont['sha1'],
	'sha256': cont['sha256'],
	'sha1_git': cont['sha1_git'],
	'length': cont['length'],
	'status': 'visible'
	})

	# 4. with something to find
	actually_present = self.storage.content_find(
	{'sha1': cont['sha1'],
	'sha1_git': cont['sha1_git'],
	'sha256': cont['sha256']})

	actually_present.pop('ctime')
	self.assertEqual(actually_present, {
	'sha1': cont['sha1'],
	'sha256': cont['sha256'],
	'sha1_git': cont['sha1_git'],
	'length': cont['length'],
	'status': 'visible'
	})

	@istest
	def content_find_with_non_present_content(self):
	# 1. with something that does not exist
	missing_cont = self.missing_cont

	actually_present = self.storage.content_find(
	{'sha1': missing_cont['sha1']})

	self.assertIsNone(actually_present)

	# 2. with something that does not exist
	actually_present = self.storage.content_find(
	{'sha1_git': missing_cont['sha1_git']})

	self.assertIsNone(actually_present)

	# 3. with something that does not exist
	actually_present = self.storage.content_find(
	{'sha256': missing_cont['sha256']})

	self.assertIsNone(actually_present)

	@istest
	def content_find_bad_input(self):
	# 1. with bad input
	with self.assertRaises(ValueError):
	self.storage.content_find({}) # empty is bad

	# 2. with bad input
	with self.assertRaises(ValueError):
	self.storage.content_find(
	{'unknown-sha1': 'something'}) # not the right key

	@istest
	def object_find_by_sha1_git(self):
	sha1_gits = [b'00000000000000000000']
	expected = {
	b'00000000000000000000': [],
	}

	self.storage.content_add([self.cont])
	sha1_gits.append(self.cont['sha1_git'])
	expected[self.cont['sha1_git']] = [{
	'sha1_git': self.cont['sha1_git'],
	'type': 'content',
	'id': self.cont['sha1'],
	}]

	self.storage.directory_add([self.dir])
	sha1_gits.append(self.dir['id'])
	expected[self.dir['id']] = [{
	'sha1_git': self.dir['id'],
	'type': 'directory',
	'id': self.dir['id'],
	}]

	self.storage.revision_add([self.revision])
	sha1_gits.append(self.revision['id'])
	expected[self.revision['id']] = [{
	'sha1_git': self.revision['id'],
	'type': 'revision',
	'id': self.revision['id'],
	}]

	self.storage.release_add([self.release])
	sha1_gits.append(self.release['id'])
	expected[self.release['id']] = [{
	'sha1_git': self.release['id'],
	'type': 'release',
	'id': self.release['id'],
	}]

	ret = self.storage.object_find_by_sha1_git(sha1_gits)
	for val in ret.values():
	for obj in val:
	del obj['object_id']

	self.assertEqual(expected, ret)

	@istest
	def content_mimetype_missing(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	mimetypes = [
	{
	'id': self.cont2['sha1'],
	'tool_name': 'file',
	'tool_version': '5.22',
	},
	{
	'id': self.missing_cont['sha1'],
	'tool_name': 'file',
	'tool_version': '5.22',
	}]

	# when
	actual_missing = self.storage.content_mimetype_missing(mimetypes)

	# then
	self.assertEqual(list(actual_missing), [
	self.cont2['sha1'],
	self.missing_cont['sha1']
	])

	# given
	self.storage.content_mimetype_add([{
	'id': self.cont2['sha1'],
	'mimetype': b'text/plain',
	'encoding': b'utf-8',
	'tool_name': 'file',
	'tool_version': '5.22',
	}])

	# when
	actual_missing = self.storage.content_mimetype_missing(mimetypes)

	# then
	self.assertEqual(list(actual_missing), [self.missing_cont['sha1']])

	@istest
	def content_mimetype_add__drop_duplicate(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	mimetype_v1 = {
	'id': self.cont2['sha1'],
	'mimetype': b'text/plain',
	'encoding': b'utf-8',
	'tool_name': 'file',
	'tool_version': '5.22',
	}

	# given
	self.storage.content_mimetype_add([mimetype_v1])

	# when
	actual_mimetypes = list(self.storage.content_mimetype_get(
	[self.cont2['sha1']]))

	# then
	expected_mimetypes_v1 = [{
	'id': self.cont2['sha1'],
	'mimetype': b'text/plain',
	'encoding': b'utf-8',
	'tool': {
	'name': 'file',
	'version': '5.22',
	}
	}]
	self.assertEqual(actual_mimetypes, expected_mimetypes_v1)

	# given
	mimetype_v2 = mimetype_v1.copy()
	mimetype_v2.update({
	'mimetype': b'text/html',
	'encoding': b'us-ascii',
	})

	self.storage.content_mimetype_add([mimetype_v2])

	actual_mimetypes = list(self.storage.content_mimetype_get(
	[self.cont2['sha1']]))

	# mimetype did not change as the v2 was dropped.
	self.assertEqual(actual_mimetypes, expected_mimetypes_v1)

	@istest
	def content_mimetype_add__update_in_place_duplicate(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	mimetype_v1 = {
	'id': self.cont2['sha1'],
	'mimetype': b'text/plain',
	'encoding': b'utf-8',
	'tool_name': 'file',
	'tool_version': '5.22',
	}

	# given
	self.storage.content_mimetype_add([mimetype_v1])

	# when
	actual_mimetypes = list(self.storage.content_mimetype_get(
	[self.cont2['sha1']]))

	expected_mimetypes_v1 = [{
	'id': self.cont2['sha1'],
	'mimetype': b'text/plain',
	'encoding': b'utf-8',
	'tool': {
	'name': 'file',
	'version': '5.22',
	}
	}]

	# then
	self.assertEqual(actual_mimetypes, expected_mimetypes_v1)

	# given
	mimetype_v2 = mimetype_v1.copy()
	mimetype_v2.update({
	'mimetype': b'text/html',
	'encoding': b'us-ascii',
	})

	self.storage.content_mimetype_add([mimetype_v2], conflict_update=True)

	actual_mimetypes = list(self.storage.content_mimetype_get(
	[self.cont2['sha1']]))

	expected_mimetypes_v2 = [{
	'id': self.cont2['sha1'],
	'mimetype': b'text/html',
	'encoding': b'us-ascii',
	'tool': {
	'name': 'file',
	'version': '5.22',
	}
	}]

	# mimetype did change as the v2 was used to overwrite v1
	self.assertEqual(actual_mimetypes, expected_mimetypes_v2)

	@istest
	def content_mimetype_get(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	mimetypes = [self.cont2['sha1'], self.missing_cont['sha1']]

	mimetype1 = {
	'id': self.cont2['sha1'],
	'mimetype': b'text/plain',
	'encoding': b'utf-8',
	'tool_name': 'file',
	'tool_version': '5.22',
	}

	# when
	self.storage.content_mimetype_add([mimetype1])

	# then
	actual_mimetypes = list(self.storage.content_mimetype_get(mimetypes))

	# then
	expected_mimetypes = [{
	'id': self.cont2['sha1'],
	'mimetype': b'text/plain',
	'encoding': b'utf-8',
	'tool': {
	'name': 'file',
	'version': '5.22',
	}
	}]

	self.assertEqual(actual_mimetypes, expected_mimetypes)

	@istest
	def content_language_missing(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	languages = [
	{
	'id': self.cont2['sha1'],
	'tool_name': 'pygments',
	'tool_version': '2.0.1+dfsg-1.1+deb8u1',
	},
	{
	'id': self.missing_cont['sha1'],
	'tool_name': 'pygments',
	'tool_version': '2.0.1+dfsg-1.1+deb8u1',
	}
	]

	# when
	actual_missing = list(self.storage.content_language_missing(languages))

	# then
	self.assertEqual(list(actual_missing), [
	self.cont2['sha1'],
	self.missing_cont['sha1'],
	])

	# given
	self.storage.content_language_add([{
	'id': self.cont2['sha1'],
	'lang': 'haskell',
	'tool_name': 'pygments',
	'tool_version': '2.0.1+dfsg-1.1+deb8u1',
	}])

	# when
	actual_missing = list(self.storage.content_language_missing(languages))

	# then
	self.assertEqual(actual_missing, [self.missing_cont['sha1']])

	@istest
	def content_language_get(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	language1 = {
	'id': self.cont2['sha1'],
	'lang': 'common-lisp',
	'tool_name': 'pygments',
	'tool_version': '2.0.1+dfsg-1.1+deb8u1',
	}

	# when
	self.storage.content_language_add([language1])

	# then
	actual_languages = list(self.storage.content_language_get(
	[self.cont2['sha1'], self.missing_cont['sha1']]))

	# then
	expected_languages = [{
	'id': self.cont2['sha1'],
	'lang': 'common-lisp',
	'tool': {
	'name': 'pygments',
	'version': '2.0.1+dfsg-1.1+deb8u1',
	}
	}]

	self.assertEqual(actual_languages, expected_languages)

	@istest
	def content_language_add__drop_duplicate(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	language_v1 = {
	'id': self.cont2['sha1'],
	'lang': 'emacslisp',
	'tool_name': 'pygments',
	'tool_version': '2.0.1+dfsg-1.1+deb8u1',
	}

	# given
	self.storage.content_language_add([language_v1])

	# when
	actual_languages = list(self.storage.content_language_get(
	[self.cont2['sha1']]))

	# then
	expected_languages_v1 = [{
	'id': self.cont2['sha1'],
	'lang': 'emacslisp',
	'tool': {
	'name': 'pygments',
	'version': '2.0.1+dfsg-1.1+deb8u1',
	}
	}]
	self.assertEqual(actual_languages, expected_languages_v1)

	# given
	language_v2 = language_v1.copy()
	language_v2.update({
	'lang': 'common-lisp',
	})

	self.storage.content_language_add([language_v2])

	actual_languages = list(self.storage.content_language_get(
	[self.cont2['sha1']]))

	# language did not change as the v2 was dropped.
	self.assertEqual(actual_languages, expected_languages_v1)

	- @attr('one')
	@istest
	def content_language_add__update_in_place_duplicate(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	language_v1 = {
	'id': self.cont2['sha1'],
	'lang': 'common-lisp',
	'tool_name': 'pygments',
	'tool_version': '2.0.1+dfsg-1.1+deb8u1',
	}

	# given
	self.storage.content_language_add([language_v1])

	# when
	actual_languages = list(self.storage.content_language_get(
	[self.cont2['sha1']]))

	# then
	expected_languages_v1 = [{
	'id': self.cont2['sha1'],
	'lang': 'common-lisp',
	'tool': {
	'name': 'pygments',
	'version': '2.0.1+dfsg-1.1+deb8u1',
	}
	}]
	self.assertEqual(actual_languages, expected_languages_v1)

	# given
	language_v2 = language_v1.copy()
	language_v2.update({
	'lang': 'emacslisp',
	})

	self.storage.content_language_add([language_v2], conflict_update=True)

	actual_languages = list(self.storage.content_language_get(
	[self.cont2['sha1']]))

	# language did not change as the v2 was dropped.
	expected_languages_v2 = [{
	'id': self.cont2['sha1'],
	'lang': 'emacslisp',
	'tool': {
	'name': 'pygments',
	'version': '2.0.1+dfsg-1.1+deb8u1',
	}
	}]

	# language did change as the v2 was used to overwrite v1
	self.assertEqual(actual_languages, expected_languages_v2)

	@istest
	def content_ctags_missing(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	ctags = [
	{
	'id': self.cont2['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	},
	{
	'id': self.missing_cont['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	}
	]

	# when
	actual_missing = self.storage.content_ctags_missing(ctags)

	# then
	self.assertEqual(list(actual_missing), [
	self.cont2['sha1'],
	self.missing_cont['sha1']
	])

	# given
	self.storage.content_ctags_add([
	{
	'id': self.cont2['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	'ctags': [{
	'name': 'done',
	'kind': 'variable',
	'line': 119,
	'lang': 'OCaml',
	}]
	},
	])

	# when
	actual_missing = self.storage.content_ctags_missing(ctags)

	# then
	self.assertEqual(list(actual_missing), [self.missing_cont['sha1']])

	@istest
	def content_ctags_get(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	ctags = [self.cont2['sha1'], self.missing_cont['sha1']]

	ctag1 = {
	'id': self.cont2['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	'ctags': [
	{
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Python',
	},
	{
	'name': 'main',
	'kind': 'function',
	'line': 119,
	'lang': 'Python',
	}]
	}

	# when
	self.storage.content_ctags_add([ctag1])

	# then
	actual_ctags = list(self.storage.content_ctags_get(ctags))

	# then

	expected_ctags = [
	{
	'id': self.cont2['sha1'],
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Python',
	},
	{
	'id': self.cont2['sha1'],
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	'name': 'main',
	'kind': 'function',
	'line': 119,
	'lang': 'Python',
	}
	]

	self.assertEqual(actual_ctags, expected_ctags)

	@istest
	def content_ctags_search(self):
	# 1. given
	cont = self.cont
	cont2 = self.cont2
	self.storage.content_add([cont, cont2])

	ctag1 = {
	'id': cont['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	'ctags': [
	{
	'name': 'hello',
	'kind': 'function',
	'line': 133,
	'lang': 'Python',
	},
	{
	'name': 'counter',
	'kind': 'variable',
	'line': 119,
	'lang': 'Python',
	},
	]
	}

	ctag2 = {
	'id': cont2['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	'ctags': [
	{
	'name': 'hello',
	'kind': 'variable',
	'line': 100,
	'lang': 'C',
	},
	]
	}

	self.storage.content_ctags_add([ctag1, ctag2])

	# 1. when
	actual_ctags = list(self.storage.content_ctags_search('hello',
	limit=1))

	# 1. then
	self.assertEqual(actual_ctags, [
	{
	'id': ctag1['id'],
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	'name': 'hello',
	'kind': 'function',
	'line': 133,
	'lang': 'Python',
	}
	])

	# 2. when
	actual_ctags = list(self.storage.content_ctags_search(
	'hello',
	limit=1,
	last_sha1=ctag1['id']))

	# 2. then
	self.assertEqual(actual_ctags, [
	{
	'id': ctag2['id'],
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	'name': 'hello',
	'kind': 'variable',
	'line': 100,
	'lang': 'C',
	}
	])

	# 3. when
	actual_ctags = list(self.storage.content_ctags_search('hello'))

	# 3. then
	self.assertEqual(actual_ctags, [
	{
	'id': ctag1['id'],
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	'name': 'hello',
	'kind': 'function',
	'line': 133,
	'lang': 'Python',
	},
	{
	'id': ctag2['id'],
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	'name': 'hello',
	'kind': 'variable',
	'line': 100,
	'lang': 'C',
	},
	])

	# 4. when
	actual_ctags = list(self.storage.content_ctags_search('counter'))

	# then
	self.assertEqual(actual_ctags, [{
	'id': ctag1['id'],
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	'name': 'counter',
	'kind': 'variable',
	'line': 119,
	'lang': 'Python',
	}])

	@istest
	def content_ctags_search_no_result(self):
	actual_ctags = list(self.storage.content_ctags_search('counter'))

	self.assertEquals(actual_ctags, [])

	@istest
	def content_ctags_add__add_new_ctags_added(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	ctag_v1 = {
	'id': self.cont2['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	'ctags': [{
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Scheme',
	}]
	}

	# given
	self.storage.content_ctags_add([ctag_v1])
	self.storage.content_ctags_add([ctag_v1]) # conflict does nothing

	# when
	actual_ctags = list(self.storage.content_ctags_get(
	[self.cont2['sha1']]))

	# then
	expected_ctags = [{
	'id': self.cont2['sha1'],
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Scheme',
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	}
	}]

	self.assertEqual(actual_ctags, expected_ctags)

	# given
	ctag_v2 = ctag_v1.copy()
	ctag_v2.update({
	'ctags': [
	{
	'name': 'defn',
	'kind': 'function',
	'line': 120,
	'lang': 'Scheme',
	}
	]
	})

	self.storage.content_ctags_add([ctag_v2])

	expected_ctags = [
	{
	'id': self.cont2['sha1'],
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Scheme',
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	}, {
	'id': self.cont2['sha1'],
	'name': 'defn',
	'kind': 'function',
	'line': 120,
	'lang': 'Scheme',
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	}
	]

	actual_ctags = list(self.storage.content_ctags_get(
	[self.cont2['sha1']]))

	self.assertEqual(actual_ctags, expected_ctags)

	@istest
	def content_ctags_add__update_in_place(self):
	# given
	cont2 = self.cont2
	self.storage.content_add([cont2])

	ctag_v1 = {
	'id': self.cont2['sha1'],
	'tool_name': 'universal-ctags',
	'tool_version': '~git7859817b',
	'ctags': [{
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Scheme',
	}]
	}

	# given
	self.storage.content_ctags_add([ctag_v1])

	# when
	actual_ctags = list(self.storage.content_ctags_get(
	[self.cont2['sha1']]))

	# then
	expected_ctags = [
	{
	'id': self.cont2['sha1'],
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Scheme',
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	}
	}
	]
	self.assertEqual(actual_ctags, expected_ctags)

	# given
	ctag_v2 = ctag_v1.copy()
	ctag_v2.update({
	'ctags': [
	{
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Scheme',
	},
	{
	'name': 'defn',
	'kind': 'function',
	'line': 120,
	'lang': 'Scheme',
	}
	]
	})

	self.storage.content_ctags_add([ctag_v2], conflict_update=True)

	actual_ctags = list(self.storage.content_ctags_get(
	[self.cont2['sha1']]))

	# ctag did change as the v2 was used to overwrite v1
	expected_ctags = [
	{
	'id': self.cont2['sha1'],
	'name': 'done',
	'kind': 'variable',
	'line': 100,
	'lang': 'Scheme',
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	},
	{
	'id': self.cont2['sha1'],
	'name': 'defn',
	'kind': 'function',
	'line': 120,
	'lang': 'Scheme',
	'tool': {
	'name': 'universal-ctags',
	'version': '~git7859817b',
	},
	}
	]
	self.assertEqual(actual_ctags, expected_ctags)

	@istest
	def content_fossology_license_missing(self):
	# given
	cont = self.cont
	self.storage.content_add([cont])

	licenses = [
	{
	'id': cont['sha1'],
	'tool_name': 'nomos',
	'tool_version': '3.1.0rc2-31-ga2cbb8c',
	}, {
	'id': self.missing_cont['sha1'],
	'tool_name': 'nomos',
	'tool_version': '3.1.0rc2-31-ga2cbb8c',
	}
	]

	# when
	actual_missing = list(self.storage.content_fossology_license_missing(
	licenses))

	# then
	self.assertEqual(actual_missing, [
	cont['sha1'],
	self.missing_cont['sha1']
	])

	# given
	r = self.storage.content_fossology_license_add([{
	'id': cont['sha1'],
	'licenses': ['GPL-2.0', 'GPL-2.0+'],
	'tool_name': 'nomos',
	'tool_version': '3.1.0rc2-31-ga2cbb8c',
	}])

	self.assertEqual(r, [])

	# when
	actual_missing = list(self.storage.content_fossology_license_missing(
	licenses))

	# then
	self.assertEqual(actual_missing, [self.missing_cont['sha1']])

	@istest
	def content_fossology_license_get(self):
	# given
	cont = self.cont
	self.storage.content_add([cont])

	licenses = [cont['sha1'], self.missing_cont['sha1']]

	license1 = {
	'id': cont['sha1'],
	'licenses': ['GPL-2.0+'],
	'tool_name': 'nomos',
	'tool_version': '3.1.0rc2-31-ga2cbb8c',
	}

	# when
	r = self.storage.content_fossology_license_add([license1])

	self.assertEquals(r, [])

	# then
	actual_licenses = list(self.storage.content_fossology_license_get(
	licenses))

	# then
	self.assertEqual(actual_licenses, [license1])

	@istest
	def content_fossology_license_add__wrong_license(self):
	# given
	cont = self.cont
	self.storage.content_add([cont])

	license_v1 = {
	'id': cont['sha1'],
	'licenses': ['blackhole'],
	'tool_name': 'nomos',
	'tool_version': '3.1.0rc2-31-ga2cbb8c',
	}

	# given
	r = self.storage.content_fossology_license_add([license_v1])

	# then
	self.assertEqual(r, [license_v1])

	# when
	actual_licenses = list(self.storage.content_fossology_license_get(
	[cont['sha1']]))

	# then
	self.assertEqual(actual_licenses, [])

	@istest
	def content_fossology_license_add__new_license_added(self):
	# given
	cont = self.cont
	self.storage.content_add([cont])

	license_v1 = {
	'id': cont['sha1'],
	'licenses': ['Apache-2.0'],
	'tool_name': 'nomos',
	'tool_version': '3.1.0rc2-31-ga2cbb8c',
	}

	# given
	self.storage.content_fossology_license_add([license_v1])
	# conflict does nothing
	self.storage.content_fossology_license_add([license_v1])

	# when
	actual_licenses = list(self.storage.content_fossology_license_get(
	[cont['sha1']]))

	# then
	self.assertEqual(actual_licenses[0], license_v1)

	# given
	license_v2 = license_v1.copy()
	license_v2.update({
	'licenses': ['BSD-2-Clause'],
	})

	self.storage.content_fossology_license_add([license_v2])

	actual_licenses = list(self.storage.content_fossology_license_get(
	[cont['sha1']]))

	expected_license = license_v1.copy()
	expected_license.update({
	'licenses': ['Apache-2.0', 'BSD-2-Clause'],
	})
	# license did not change as the v2 was dropped.
	self.assertEqual(actual_licenses[0], expected_license)

	@istest
	def content_fossology_license_add__update_in_place_duplicate(self):
	# given
	cont = self.cont
	self.storage.content_add([cont])

	license_v1 = {
	'id': cont['sha1'],
	'licenses': ['CECILL'],
	'tool_name': 'nomos',
	'tool_version': '3.1.0rc2-31-ga2cbb8c',
	}

	# given
	self.storage.content_fossology_license_add([license_v1])
	# conflict does nothing
	self.storage.content_fossology_license_add([license_v1])

	# when
	actual_licenses = list(self.storage.content_fossology_license_get(
	[cont['sha1']]))

	# then
	self.assertEqual(actual_licenses[0], license_v1)

	# given
	license_v2 = license_v1.copy()
	license_v2.update({
	'licenses': ['CECILL-2.0']
	})

	self.storage.content_fossology_license_add([license_v2],
	conflict_update=True)

	actual_licenses = list(self.storage.content_fossology_license_get(
	[cont['sha1']]))

	# license did change as the v2 was used to overwrite v1
	self.assertEqual(actual_licenses[0], license_v2)


	class TestStorage(AbstractTestStorage, unittest.TestCase):
	"""Test the local storage"""

	# Can only be tested with local storage as you can't mock
	# datetimes for the remote server
	@istest
	def fetch_history(self):
	origin = self.storage.origin_add_one(self.origin)
	with patch('datetime.datetime'):
	datetime.datetime.now.return_value = self.fetch_history_date
	fetch_history_id = self.storage.fetch_history_start(origin)
	datetime.datetime.now.assert_called_with(tz=datetime.timezone.utc)

	with patch('datetime.datetime'):
	datetime.datetime.now.return_value = self.fetch_history_end
	self.storage.fetch_history_end(fetch_history_id,
	self.fetch_history_data)

	fetch_history = self.storage.fetch_history_get(fetch_history_id)
	expected_fetch_history = self.fetch_history_data.copy()

	expected_fetch_history['id'] = fetch_history_id
	expected_fetch_history['origin'] = origin
	expected_fetch_history['date'] = self.fetch_history_date
	expected_fetch_history['duration'] = self.fetch_history_duration

	self.assertEqual(expected_fetch_history, fetch_history)

	@istest
	def person_get(self):
	# given
	person0 = {
	'fullname': b'bob <alice@bob>',
	'name': b'bob',
	'email': b'alice@bob',
	}
	id0 = self.storage._person_add(person0)

	person1 = {
	'fullname': b'tony <tony@bob>',
	'name': b'tony',
	'email': b'tony@bob',
	}
	id1 = self.storage._person_add(person1)

	# when
	actual_persons = self.storage.person_get([id0, id1])

	# given (person injection through release for example)
	self.assertEqual(
	list(actual_persons), [
	{
	'id': id0,
	'fullname': person0['fullname'],
	'name': person0['name'],
	'email': person0['email'],
	},
	{
	'id': id1,
	'fullname': person1['fullname'],
	'name': person1['name'],
	'email': person1['email'],
	},
	])

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