/*******************************************************************************
 * 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.regression.bugs;

import org.junit.Test;
import org.simantics.db.Resource;
import org.simantics.db.Session;
import org.simantics.db.VirtualGraph;
import org.simantics.db.WriteGraph;
import org.simantics.db.common.request.WriteRequest;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.service.ManagementSupport;
import org.simantics.db.service.VirtualGraphSupport;
import org.simantics.db.testing.base.ExistingDatabaseTest;
import org.simantics.layer0.Layer0;

/**
 * Tests that using virtual graph during write request does not interfere with
 * generation of core change sets.
 * 
 * See https://www.simulationsite.net/redmine/issues/4007.   
 */
public class SimanticsFeature4007Test1 extends ExistingDatabaseTest {
    @Test
    public void testSimanticsFeature4007() throws Exception {
    	final Session session = getSession();
        final VirtualGraphSupport vgSupport = session.getService(VirtualGraphSupport.class);
        final ManagementSupport mg =  session.getService(ManagementSupport.class);
        long id1 = mg.getHeadRevisionId();
        try {
            session.syncRequest(new WriteRequest() {
                @Override
                public void perform(WriteGraph graph) throws DatabaseException {
                    Layer0 L0 = Layer0.getInstance(graph);

                    Resource r1 = graph.newResource();
                    graph.claim(r1, L0.InstanceOf, null, L0.Library);
                    graph.claimLiteral(r1, L0.HasName, "r1");

                    VirtualGraph vg = vgSupport.getWorkspacePersistent("vg");
                    graph.syncRequest(new WriteRequest(vg) {
                        @Override
                        public void perform(WriteGraph graph) throws DatabaseException {
                            Layer0 L0 = Layer0.getInstance(graph);
                            Resource r = graph.newResource();
                            graph.claim(r, L0.InstanceOf, null, L0.Library);
                            graph.claimLiteral(r, L0.HasName, "rv");
                        }
                    });

                    Resource r2 = graph.newResource();
                    graph.claim(r2, L0.InstanceOf, null, L0.Library);
                    graph.claimLiteral(r2, L0.HasName, "r2");
                }
            });
            long id2 = mg.getHeadRevisionId();
            assertTrue(getName() + " failed!", id2 == id1 + 1);
        } catch (Throwable e) {
            fail("Write transaction threw an unknown exception " + e);
        }
    }
}