tests/org.simantics.db.tests/src/org/simantics/db/tests/api/story/sessionGarbageCollection/RemoveList.java

   1 package org.simantics.db.tests.api.story.sessionGarbageCollection;
   2
   3 import java.util.Collection;
   4
   5 import org.simantics.db.Resource;
   6 import org.simantics.db.WriteGraph;
   7 import org.simantics.db.exception.DatabaseException;
   8 import org.simantics.db.layer0.util.RemoverUtil;
   9 import org.simantics.db.testing.common.WriteCommand;
  10 import org.simantics.layer0.Layer0;
  11 import org.simantics.utils.datastructures.collections.CollectionUtils;
  12
  13 public class RemoveList extends WriteCommand<CollectDuringWriteAndRead> {
  14
  15         @Override
  16         protected void run(WriteGraph graph, CollectDuringWriteAndRead environment) throws DatabaseException {
  17
  18                 Layer0 L0 = Layer0.getInstance(graph);
  19                 Resource root = environment.getRoot();
  20
  21                 Collection<Resource> lists = graph.getObjects(root, L0.ConsistsOf);
  22                 if(lists.size() == 0) return;
  23
  24                 int position = environment.randomNatural() % lists.size();
  25
  26                 Resource list = CollectionUtils.element(lists, position);
  27                 RemoverUtil.remove(graph, list);
  28                 graph.deny(root, L0.ConsistsOf, list);
  29
  30         }
  31
  32 }