bundles/org.simantics.db.common/src/org/simantics/db/common/request/PossibleNearestOwner.java

   1 package org.simantics.db.common.request;
   2
   3 import org.simantics.db.ReadGraph;
   4 import org.simantics.db.Resource;
   5 import org.simantics.db.exception.DatabaseException;
   6
   7 public class PossibleNearestOwner extends ResourceRead2<Resource> {
   8
   9     public PossibleNearestOwner(Resource resource, Resource type) {
  10         super(resource, type);
  11     }
  12
  13     @Override
  14     public Resource perform(ReadGraph graph) throws DatabaseException {
  15         Resource owner = graph.syncRequest(new PossibleOwner(resource));
  16         if(owner == null) return null;
  17         if(graph.isInstanceOf(owner, resource2)) return owner;
  18         return graph.syncRequest(new PossibleNearestOwner(owner, resource2));
  19     }
  20
  21 }