1 package org.simantics.db.tests.api.story.sessionGarbageCollection;
3 import java.util.Collection;
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;
13 public class RemoveList extends WriteCommand<CollectDuringWriteAndRead> {
16 protected void run(WriteGraph graph, CollectDuringWriteAndRead environment) throws DatabaseException {
18 Layer0 L0 = Layer0.getInstance(graph);
19 Resource root = environment.getRoot();
21 Collection<Resource> lists = graph.getObjects(root, L0.ConsistsOf);
22 if(lists.size() == 0) return;
24 int position = environment.randomNatural() % lists.size();
26 Resource list = CollectionUtils.element(lists, position);
27 RemoverUtil.remove(graph, list);
28 graph.deny(root, L0.ConsistsOf, list);