tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/listening/QueryResultCompareTest1.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.tests.api.request.listening;
  13
  14 import java.util.Collection;
  15
  16 import org.junit.Test;
  17 import org.simantics.db.ReadGraph;
  18 import org.simantics.db.Resource;
  19 import org.simantics.db.Session;
  20 import org.simantics.db.WriteGraph;
  21 import org.simantics.db.common.procedure.adapter.ListenerAdapter;
  22 import org.simantics.db.common.request.WriteRequest;
  23 import org.simantics.db.common.request.WriteResultRequest;
  24 import org.simantics.db.exception.DatabaseException;
  25 import org.simantics.db.request.Read;
  26 import org.simantics.db.testing.base.ExistingDatabaseTest;
  27 import org.simantics.layer0.Layer0;
  28
  29 public class QueryResultCompareTest1 extends ExistingDatabaseTest {
  30
  31         @Test
  32     public void testNullArrayCompare() throws Exception {
  33
  34         final Session session = getSession();
  35
  36                 final Resource newResource = getSession().syncRequest(new WriteResultRequest<Resource>() {
  37                         @Override
  38                         public Resource perform(WriteGraph graph) throws DatabaseException {
  39                                 return graph.newResource();
  40                         }
  41                 });
  42
  43         session.syncRequest(new Read<Resource[]>() {
  44             @Override
  45             public Resource[] perform(ReadGraph graph) throws DatabaseException {
  46                 Layer0 b = Layer0.getInstance(graph);
  47                 Collection<Resource> coll = graph.getObjects(newResource, b.ConsistsOf);
  48                 if(coll.isEmpty()) return null;
  49                 else return coll.toArray(Resource.NONE);
  50             }
  51         }, new ListenerAdapter<Resource[]>() {
  52             @Override
  53             public boolean isDisposed() {
  54                 return false;
  55             }
  56         });
  57
  58                 getSession().syncRequest(new WriteRequest() {
  59                         @Override
  60                         public void perform(WriteGraph graph) throws DatabaseException {
  61                             Layer0 b = Layer0.getInstance(graph);
  62                             graph.claim(newResource, b.ConsistsOf, graph.newResource());
  63                         }
  64                 });
  65
  66     }
  67 }