/*******************************************************************************
 * 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.client;

import org.junit.Test;
import org.simantics.db.ReadGraph;
import org.simantics.db.Resource;
import org.simantics.db.WriteGraph;
import org.simantics.db.common.request.ReadRequest;
import org.simantics.db.common.request.WriteResultRequest;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.service.XSupport;
import org.simantics.db.testing.annotation.Fails;
import org.simantics.db.testing.base.ExistingDatabaseTest;
import org.simantics.db.testing.common.TestBase;
import org.simantics.layer0.Layer0;

public class TransactionTest4 extends ExistingDatabaseTest {
	@Test
	@Fails
	public void testTransaction4()
	throws DatabaseException {
	    breakConnectionDuringTransaction();
	}
	void breakConnectionDuringTransaction() throws DatabaseException {
	    TransactionTest4Client client = new TransactionTest4Client(this);
        try {
            client.syntheticBreakDuringCreateResource();
        } catch (Throwable t) {
        	if (DEBUG)
        		t.printStackTrace();
        } finally {
            if (null != client)
                client.close();
        }
	    TransactionTest4Client client2 = new TransactionTest4Client(this);
        try {
            client2.readQuery();
        } finally {
            if (null != client2)
                client2.close();
        }
	}
}

class TransactionTest4Client extends TransctionCommon {
    TransactionTest4Client(ExistingDatabaseTest testCommon)
    throws DatabaseException {
        super(testCommon);
    }
    public Resource syntheticBreakDuringCreateResource()
    throws DatabaseException {
        return session.syncRequest(new WriteResultRequest<Resource>() {
            @Override
            public Resource perform(WriteGraph g) throws DatabaseException {
                Layer0 b = Layer0.getInstance(g);
                Resource r = g.newResource();
                g.claim(r, b.InstanceOf, b.Entity);
                session.getService(XSupport.class).flushCluster(r);
                try {
					Thread.sleep(1000); // millisecond
				} catch (InterruptedException e) {
					if (DEBUG)
						e.printStackTrace();
				}
                session.getService(XSupport.class).breakConnection();
                return r;
            }
        });
    }
    public void readQuery()
    throws DatabaseException {
        session.syncRequest(new ReadRequest() {
            @Override
            public void run(ReadGraph g) throws DatabaseException {
                Layer0 l0 = Layer0.getInstance(g);
                Resource rl = g.getResource(TestBase.ROOT_LIBRARY_URI);
                for (Resource r : g.getObjects(rl, l0.ConsistsOf))
                	if (DEBUG)
                		System.out.println("Root library " + rl + " consists  of " + r);
            }
        });
    }
}