bundles/org.simantics.db.common/src/org/simantics/db/common/utils/VersionInfoRequest.java

   1 package org.simantics.db.common.utils;
   2
   3 import java.util.Collections;
   4
   5 import org.simantics.databoard.Bindings;
   6 import org.simantics.db.ReadGraph;
   7 import org.simantics.db.Resource;
   8 import org.simantics.db.common.NamedResource;
   9 import org.simantics.db.common.request.ResourceRead;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.layer0.Layer0;
  12 import org.simantics.utils.datastructures.MapList;
  13
  14 public class VersionInfoRequest extends ResourceRead<VersionInfo> {
  15
  16         public VersionInfoRequest(Resource resource) {
  17                 super(resource);
  18         }
  19
  20         @Override
  21         public VersionInfo perform(ReadGraph graph) throws DatabaseException {
  22
  23         Layer0 L0 = Layer0.getInstance(graph);
  24
  25         String baseName = graph.getPossibleRelatedValue(resource, L0.HasName, Bindings.STRING);
  26         String version = "";
  27
  28         if(baseName != null) {
  29                 int pos = baseName.lastIndexOf('@');
  30                 if(pos != -1) {
  31                         version = baseName.substring(pos+1);
  32                         baseName = baseName.substring(0, pos);
  33                 }
  34         }
  35
  36                 Resource parent = graph.getPossibleObject(resource, L0.PartOf);
  37                 if(parent != null) {
  38                         MapList<String,NamedResource> versionMap = graph.syncRequest(new VersionMapRequest(parent));
  39                         return new VersionInfo(baseName, version, versionMap.getValues(baseName));
  40                 }
  41
  42                 return new VersionInfo(baseName, version, Collections.singleton(new NamedResource(version, resource)));
  43
  44         }
  45
  46 }