tests/org.simantics.db.tests/src/org/simantics/db/tests/regression/bugs/SimanticsBug639Test.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.regression.bugs;
  13
  14 import org.junit.Test;
  15 import org.simantics.databoard.Bindings;
  16 import org.simantics.db.ReadGraph;
  17 import org.simantics.db.Resource;
  18 import org.simantics.db.Session;
  19 import org.simantics.db.WriteGraph;
  20 import org.simantics.db.common.request.ReadRequest;
  21 import org.simantics.db.common.request.WriteRequest;
  22 import org.simantics.db.exception.DatabaseException;
  23 import org.simantics.db.exception.NoSingleResultException;
  24 import org.simantics.db.testing.base.ExistingDatabaseTest;
  25 import org.simantics.layer0.Layer0;
  26 import org.simantics.utils.DataContainer;
  27
  28 /**
  29  * @author Tuukka Lehtonen
  30  */
  31 public class SimanticsBug639Test extends ExistingDatabaseTest {
  32
  33     public Resource createAssertion(WriteGraph graph, Resource subject, Resource relation, String object) throws DatabaseException {
  34         Layer0 L0 = Layer0.getInstance(graph);
  35         Resource assertion = graph.newResource();
  36         graph.claim(assertion, L0.InstanceOf, null, L0.Assertion);
  37         graph.claim(subject, L0.Asserts, assertion);
  38         graph.claim(assertion, L0.HasPredicate, relation);
  39         Resource value = graph.newResource();
  40         graph.claim(value, L0.InstanceOf, null, L0.String);
  41         graph.claimValue(value, object);
  42         graph.claim(assertion, L0.HasObject, value);
  43         return assertion;
  44     }
  45
  46     @Test
  47     public void testTicket646() throws Exception {
  48
  49         Session session = getSession();
  50         final DataContainer<Resource> subject = new DataContainer<Resource>();
  51         try {
  52             session.syncRequest(new WriteRequest() {
  53                 @Override
  54                 public void perform(WriteGraph graph) throws DatabaseException {
  55                     // Use any non-functional relation
  56                     Layer0 b = Layer0.getInstance(graph);
  57                     Resource s = graph.newResource();
  58                     graph.claim(s, b.InstanceOf, b.Entity);
  59
  60                     createAssertion(graph, s, L0.HasName, "Foo1");
  61                     createAssertion(graph, s, L0.HasName, "Foo2");
  62                     createAssertion(graph, s, L0.HasComment, "Comment1");
  63                     createAssertion(graph, s, L0.HasComment, "Comment2");
  64
  65                     subject.set(s);
  66                 }
  67             });
  68         } catch (Throwable e) {
  69             fail("Write transaction threw an unknown exception " + e);
  70         }
  71
  72         try {
  73             session.syncRequest(new ReadRequest() {
  74                 @Override
  75                 public void run(ReadGraph graph) throws DatabaseException {
  76                     Layer0 L0 = Layer0.getInstance(graph);
  77                     Resource s = subject.get();
  78                     // Just make sure that these don't crash.
  79                     assertEquals(graph.getObjects(s, L0.HasComment).size(), 0);
  80                     assertEquals(graph.getObjects(s, L0.HasName).size(), 0);
  81                 }
  82             });
  83         } catch (Throwable e) {
  84             fail("Read transaction threw an unexpected exception " + e);
  85         }
  86
  87         try {
  88             session.syncRequest(new ReadRequest() {
  89                 @Override
  90                 public void run(ReadGraph graph) throws DatabaseException {
  91                     Layer0 L0 = Layer0.getInstance(graph);
  92                     Resource s = subject.get();
  93                     graph.getRelatedValue(s, L0.HasName, Bindings.STRING);
  94                 }
  95             });
  96         } catch (NoSingleResultException e) {
  97             // Expected
  98         } catch (Throwable e) {
  99             fail("Read transaction threw an unexpected exception " + e);
 100         }
 101
 102     }
 103 }