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036.sql
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036.sql
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-- SWH DB schema upgrade
-- from_version: 35
-- to_version: 36
-- description: Retrieve revision by occurrence criterions filtering
insert into dbversion(version, release, description)
values(36, now(), 'Work In Progress');
create function swh_occurrence_get_by(
origin_id bigint,
branch_name text default NULL,
validity text default NULL)
returns setof occurrence_history
language plpgsql
as $$
declare
filters text[] := array[] :: text[]; -- AND-clauses used to filter content
q text;
begin
if origin_id is not null then
filters := filters || format('origin = %L', origin_id);
end if;
if branch_name is not null then
filters := filters || format('branch = %L', branch_name);
end if;
if validity is not null then
filters := filters || format('lower(validity) <= %L and %L <= upper(validity)', validity, validity);
end if;
if cardinality(filters) = 0 then
raise exception 'At least one filter amongst (origin_id, branch_name, validity) is needed';
else
q = format('select * ' ||
'from occurrence_history ' ||
'where %s ' ||
'order by validity desc',
array_to_string(filters, ' and '));
return query execute q;
end if;
end
$$;
CREATE OR REPLACE FUNCTION swh_revision_get_by(origin_id bigint, branch_name text = NULL::text, validity text = NULL::text) RETURNS SETOF revision_entry
LANGUAGE sql STABLE
AS $$
select r.id, r.date, r.date_offset,
r.committer_date, r.committer_date_offset,
r.type, r.directory, r.message,
a.name, a.email, c.name, c.email, r.metadata, r.synthetic,
array_agg(rh.parent_id::bytea order by rh.parent_rank)
as parents
from swh_occurrence_get_by(origin_id, branch_name, validity) as occ
inner join revision r on occ.revision = r.id
left join person a on a.id = r.author
left join person c on c.id = r.committer
left join revision_history rh on rh.id = r.id
group by r.id, a.name, a.email, r.date, r.date_offset,
c.name, c.email, r.committer_date, r.committer_date_offset,
r.type, r.directory, r.message, r.metadata, r.synthetic;
$$;

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