/*******************************************************************************
 * 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.performance.read;

import org.simantics.db.ReadGraph;
import org.simantics.db.Session;
import org.simantics.db.procedure.Procedure;
import org.simantics.db.request.Read;
import org.simantics.db.testing.base.TestCommonPerf;


/**
 * Tests for CachedQueryTest
 * 
 * @author Marko Luukkainen <marko.luukkainen@vtt.fi>
 *
 */
public class CachedQueryTest extends TestCommonPerf {

	final static int QUERIES = 5000;
	final static double TIME = 1.0;
	
	int counter = 0;
	
	public void testTransactions() throws Exception {
		
		Session session = getSession();
		
		Read<Boolean> req = new Read<Boolean>() {

			@Override
			public Boolean perform(ReadGraph graph) {
				return true;
			}
			
		};
		
		Procedure<Boolean> proc = new Procedure<Boolean>() {
			
			@Override
			public void execute(Boolean result) {
				synchronized(this) {
					counter++;
				}
			}

        	public void exception(Throwable t) {
            	System.out.print("CachedQueryTest request failed: ");
            	t.printStackTrace();
            }

		};
		
		session.syncRequest(req, proc);

		long start = System.nanoTime();

		for(int i = 0; i < QUERIES ; i++) {
			session.syncRequest(req, proc);
		}
		
		if(counter != (QUERIES + 1)) throw new Error("Invalid amount of notifications (got " + counter + ", expexted " + (QUERIES + 1) + ").");
		
		checkException();

		long end = System.nanoTime();
		
		double time = (double)(end-start) * (double)(1e-9);
		
		String t = "CachedQueryTest finished with time " + time + ". Limit was < " + TIME;
		System.out.println(t);
		if (time > TIME)
			fail(t); 
	}

}