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

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