/*******************************************************************************
 * Copyright (c) 2007, 2010 Association for Decentralized Information Management
 * in Industry THTH ry.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *     VTT Technical Research Centre of Finland - initial API and implementation
 *******************************************************************************/
package org.simantics.db.tests.api.request.listening;

import java.util.Collection;
import java.util.concurrent.atomic.AtomicInteger;

import org.junit.Assert;
import org.junit.Test;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.Session;
import org.simantics.db.WriteGraph;
import org.simantics.db.common.procedure.adapter.ListenerAdapter;
import org.simantics.db.common.request.UniqueRead;
import org.simantics.db.common.request.WriteRequest;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.testing.annotation.Fails;
import org.simantics.db.testing.base.ExistingDatabaseTest;

@Fails
public class ObjectsListeningTest extends ExistingDatabaseTest {

	Resource subject;
	Resource subrelation;
	AtomicInteger executions = new AtomicInteger(0);
	
	@Test
    public void testDisposedListener() throws Exception {
		
        final Session session = getSession();

        session.syncRequest(new WriteRequest() {

			@Override
			public void perform(WriteGraph graph) throws DatabaseException {
				subject = graph.newResource();
				subrelation = graph.newResource();
				graph.claim(subrelation, L0.SubrelationOf, L0.HasProperty);
				graph.claim(subrelation, L0.SubrelationOf, null, L0.List_Next);
			}
			
		});
        
        session.syncRequest(new UniqueRead<Collection<Resource>>() {

			@Override
			public Collection<Resource> perform(ReadGraph graph) throws DatabaseException {
				return graph.getObjects(subject, L0.List_Next);
			}
        	
        }, new ListenerAdapter<Collection<Resource>>() {
        	
        	@Override
        	public void execute(Collection<Resource> result) {
        		executions.incrementAndGet();
        	}
        	
        	@Override
        	public boolean isDisposed() {
        		return false;
        	}
        	
        });
        
        session.syncRequest(new WriteRequest() {

			@Override
			public void perform(WriteGraph graph) throws DatabaseException {
				graph.claim(subject, subrelation, graph.newResource());
			}
			
		});

        Assert.assertEquals(2, executions.get());
        
    }
}