tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/misc/GraphSupportTest.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.misc;
  13
  14 import java.util.Collection;
  15 import java.util.concurrent.atomic.AtomicInteger;
  16
  17 import org.junit.Test;
  18 import org.simantics.db.ReadGraph;
  19 import org.simantics.db.Resource;
  20 import org.simantics.db.Session;
  21 import org.simantics.db.WriteGraph;
  22 import org.simantics.db.common.request.ReadRequest;
  23 import org.simantics.db.common.request.ResourceRead;
  24 import org.simantics.db.common.request.WriteRequest;
  25 import org.simantics.db.common.request.WriteResultRequest;
  26 import org.simantics.db.exception.DatabaseException;
  27 import org.simantics.db.procedure.SyncListener;
  28 import org.simantics.db.testing.base.ExistingDatabaseTest;
  29 import org.simantics.layer0.Layer0;
  30
  31 public class GraphSupportTest extends ExistingDatabaseTest {
  32
  33         @Test
  34     public void test() throws Exception {
  35
  36         final AtomicInteger runs = new AtomicInteger(0);
  37
  38                 Session session = getSession();
  39
  40                 final Resource test = session.syncRequest(new WriteResultRequest<Resource>() {
  41             @Override
  42             public Resource perform(WriteGraph graph) throws DatabaseException {
  43                 return graph.newResource();
  44             }
  45                 });
  46
  47                 class Request extends ResourceRead<Collection<Resource>> {
  48
  49                         public Request(Resource resource) {
  50                                 super(resource);
  51                         }
  52
  53                         @Override
  54                         public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {
  55                                 return graph.getObjects(resource, Layer0.getInstance(graph).ConsistsOf);
  56                         }
  57
  58                 }
  59
  60                 session.syncRequest(new ReadRequest() {
  61
  62                         @Override
  63                         public void run(ReadGraph graph) throws DatabaseException {
  64
  65                                 graph.syncRequest(new Request(test), new SyncListener<Collection<Resource>>() {
  66
  67                                         @Override
  68                                         public void execute(ReadGraph graph, Collection<Resource> result) throws DatabaseException {
  69
  70                                                 graph.syncRequest(new ReadRequest() {
  71
  72                                                         @Override
  73                                                         public void run(ReadGraph graph) throws DatabaseException {
  74                                                                 runs.incrementAndGet();
  75                                                         }
  76
  77                                                 });
  78                                         }
  79
  80                                         @Override
  81                                         public void exception(ReadGraph graph, Throwable throwable) throws DatabaseException {
  82                                         }
  83
  84                                         @Override
  85                                         public boolean isDisposed() {
  86                                                 return false;
  87                                         }
  88                                 });
  89
  90                         }
  91
  92                 });
  93
  94                 assert(runs.get() == 1);
  95
  96                 session.syncRequest(new WriteRequest() {
  97             @Override
  98             public void perform(WriteGraph graph) throws DatabaseException {
  99                 graph.claim(test, Layer0.getInstance(graph).ConsistsOf, graph.newResource());
 100             }
 101                 });
 102
 103                 assert(runs.get() == 2);
 104
 105         }
 106
 107 }