bundles/org.simantics.db.layer0/src/org/simantics/db/layer0/request/LinkedFrom.java

   1 package org.simantics.db.layer0.request;
   2
   3 import java.util.Collection;
   4 import java.util.HashSet;
   5 import java.util.Set;
   6
   7 import org.simantics.db.ReadGraph;
   8 import org.simantics.db.Resource;
   9 import org.simantics.db.common.request.ResourceRead;
  10 import org.simantics.db.exception.DatabaseException;
  11 import org.simantics.layer0.Layer0;
  12
  13 /**
  14  * @author Tuukka Lehtonen
  15  * @since 1.25.0
  16  */
  17 public class LinkedFrom extends ResourceRead<Set<Resource>> {
  18
  19     public LinkedFrom(Resource resource) {
  20         super(resource);
  21     }
  22
  23     @Override
  24     public Set<Resource> perform(ReadGraph graph) throws DatabaseException {
  25         Layer0 L0 = Layer0.getInstance(graph);
  26         HashSet<Resource> result = new HashSet<>();
  27         Collection<Resource> linkees = graph.getObjects(resource, L0.IsLinkedTo_Inverse);
  28         result.addAll(linkees);
  29         for (Resource linkee : linkees) {
  30             Set<Resource> deep = graph.sync(new LinkedFrom(linkee));
  31             result.addAll(deep);
  32         }
  33         return result;
  34     }
  35
  36 }