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

   1 package org.simantics.db.common.utils;
   2
   3 import java.util.Map;
   4
   5 import org.simantics.db.ReadGraph;
   6 import org.simantics.db.Resource;
   7 import org.simantics.db.common.NamedResource;
   8 import org.simantics.db.common.request.ResourceRead;
   9 import org.simantics.db.common.uri.UnescapedChildMapOfResource;
  10 import org.simantics.db.exception.DatabaseException;
  11
  12 public class VersionMapRequest extends ResourceRead<VersionMap> {
  13
  14         public VersionMapRequest(Resource resource) {
  15                 super(resource);
  16         }
  17
  18         @Override
  19         public VersionMap perform(ReadGraph graph) throws DatabaseException {
  20                 VersionMap result = new VersionMap();
  21                 Map<String,Resource> childMap = graph.syncRequest(new UnescapedChildMapOfResource(resource));
  22                 for(Map.Entry<String,Resource> entry : childMap.entrySet()) {
  23                         String s = entry.getKey();
  24                         Resource r = entry.getValue();
  25                         int pos = s.lastIndexOf('@');
  26                         if(pos == -1)  {
  27                                 result.add(s, new NamedResource("", r));
  28                         } else {
  29                                 String base = s.substring(0, pos);
  30                                 String version = s.substring(pos+1);
  31                                 result.add(base, new NamedResource(version, r));
  32                         }
  33                 }
  34                 return result;
  35         }
  36
  37 }