tests/org.simantics.db.tests/src/org/simantics/db/tests/api/request/misc/RequestParentTest.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.Set;
  15
  16 import org.junit.Test;
  17 import org.simantics.db.AsyncReadGraph;
  18 import org.simantics.db.Session;
  19 import org.simantics.db.impl.query.CacheEntry;
  20 import org.simantics.db.impl.service.QueryDebug;
  21 import org.simantics.db.procedure.AsyncListener;
  22 import org.simantics.db.procedure.AsyncProcedure;
  23 import org.simantics.db.request.AsyncRead;
  24 import org.simantics.db.testing.base.ExistingDatabaseTest;
  25
  26 public class RequestParentTest extends ExistingDatabaseTest {
  27
  28         @Test
  29         public void test() throws Exception {
  30
  31                 Session session = getSession();
  32
  33                 QueryDebug debug = session.getService(QueryDebug.class);
  34
  35         class Request implements AsyncRead<Object> {
  36
  37             @Override
  38             public void perform(AsyncReadGraph graph, AsyncProcedure<Object> procedure) {
  39                 procedure.execute(graph, new Object());
  40             }
  41
  42             @Override
  43                     public int threadHash() {
  44                         return hashCode();
  45                     }
  46
  47             @Override
  48             public int getFlags() {
  49                 return 0;
  50             }
  51
  52         }
  53
  54         final Request request1 = new Request();
  55         final Request request2 = new Request();
  56
  57         session.syncRequest(request1, new AsyncListener<Object>() {
  58
  59             @Override
  60             public void exception(AsyncReadGraph graph, Throwable t) {
  61             }
  62
  63             @Override
  64             public void execute(AsyncReadGraph graph, Object result) {
  65                 graph.asyncRequest(request2);
  66             }
  67
  68             @Override
  69             public boolean isDisposed() {
  70                 return false;
  71             }
  72
  73         });
  74
  75                 Set<CacheEntry> parents = debug.getParents(request2);
  76                 for(CacheEntry parent : parents) {
  77                     if(parent.getOriginalRequest().equals(request1)) fail("Request1 should not be parent of Request2");
  78                 }
  79                 if(!parents.isEmpty())fail("Request2 should not have parents");
  80
  81         }
  82
  83 }