package org.softwareheritage.graph; import java.util.ArrayList; import java.util.Arrays; import java.util.List; /** * A node in the Software Heritage graph. * * @author The Software Heritage developers */ public class Node { /** * Software Heritage graph node types, as described in the * data model. */ public enum Type { /** Content node */ CNT, /** Directory node */ DIR, /** Origin node */ ORI, /** Release node */ REL, /** Revision node */ REV, /** Snapshot node */ SNP; /** * Converts integer to corresponding SWH node type. * * @param intType node type represented as an integer * @return the corresponding {@link Node.Type} value * @see org.softwareheritage.graph.Node.Type */ public static Node.Type fromInt(int intType) { switch (intType) { case 0: return CNT; case 1: return DIR; case 2: return ORI; case 3: return REL; case 4: return REV; case 5: return SNP; } return null; } /** * Converts string to corresponding SWH node type. * * @param strType node type represented as a string * @return the corresponding {@link Node.Type} value * @see org.softwareheritage.graph.Node.Type */ public static Node.Type fromStr(String strType) { if (!strType.matches("cnt|dir|ori|rel|rev|snp")) { throw new IllegalArgumentException("Unknown node type: " + strType); } return Node.Type.valueOf(strType.toUpperCase()); } /** * Parses SWH node type possible values from formatted string (see the API * syntax). * * @param strFmtType node types represented as a formatted string * @return a list containing the {@link Node.Type} values * @see org.softwareheritage.graph.Node.Type */ public static ArrayList parse(String strFmtType) { ArrayList types = new ArrayList<>(); if (strFmtType.equals("*")) { List nodeTypes = Arrays.asList(Node.Type.values()); types.addAll(nodeTypes); } else { types.add(Node.Type.fromStr(strFmtType)); } return types; } } }