tests/org.simantics.db.tests/src/org/simantics/db/tests/api/readGraph/getSingleType/GetSingleTypeTest1.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.readGraph.getSingleType;
  13
  14 import org.simantics.db.ReadGraph;
  15 import org.simantics.db.Resource;
  16 import org.simantics.db.WriteGraph;
  17 import org.simantics.db.exception.DatabaseException;
  18 import org.simantics.db.exception.NoSingleResultException;
  19 import org.simantics.db.testing.base.WriteReadTest;
  20
  21 public class GetSingleTypeTest1 extends WriteReadTest {
  22
  23     private Resource type1;
  24     private Resource type2;
  25     private Resource instance1;
  26
  27     @Override
  28     protected void write(WriteGraph graph) throws DatabaseException {
  29         type1 = graph.newResource();
  30         graph.claim(type1, L0.Inherits, L0.Entity);
  31
  32         type2 = graph.newResource();
  33         graph.claim(type2, L0.Inherits, L0.Entity);
  34
  35         instance1 = graph.newResource();
  36         graph.claim(instance1, L0.InstanceOf,type1);
  37         graph.claim(instance1, L0.InstanceOf,type2);
  38
  39     }
  40
  41     @Override
  42     protected void read(ReadGraph graph) throws DatabaseException {
  43         try {
  44                 assertNotNull("Null not allowed",graph.getSingleType(instance1));
  45         } catch (NoSingleResultException e) {
  46                 return;
  47         } catch (Throwable t) {
  48                 fail("Wrong exception");
  49         }
  50         fail("Should throw");
  51     }
  52 }