/*******************************************************************************
 * 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.java;

import org.simantics.db.testing.base.TestCommonPerf;

/**
 *
 */
public class FieldAccessTest extends TestCommonPerf {

	final static class A {
		
		final private int value;
		
		public A(int value) {
			this.value = value;
		}
		
		public int getValue() {
			return value;
		}
		
	}
	
	final static class B {
		
		final private int value;
		
		public B(int value) {
			this.value = value;
		}
		
	}

	public static int LEN1 = 10000;
	public static int LEN2 = 1000000000;

	public void test() throws Exception {

		
		A a = new A(1);
		B b = new B(1);

		int counter = 0;
		long start = System.nanoTime();
		for(int i=0;i<LEN1;i++) counter += a.getValue();  
		long duration = System.nanoTime() - start;

		int counter2 = 0;
		long start2 = System.nanoTime();
		for(int i=0;i<LEN1;i++) counter2 += b.value;  
		long duration2 = System.nanoTime() - start2;

		int counter3 = 0;
		long start3 = System.nanoTime();
		for(int i=0;i<LEN2;i++) counter3 += a.getValue();  
		long duration3 = System.nanoTime() - start3;

		int counter4 = 0;
		long start4 = System.nanoTime();
		for(int i=0;i<LEN2;i++) counter4 += b.value;  
		long duration4 = System.nanoTime() - start4;
		
		System.out.println("Finished in " + 1e-9*duration + "s.");
		System.out.println("Finished in " + 1e-9*duration2 + "s.");
		System.out.println("Finished in " + 1e-9*duration3 + "s.");
		System.out.println("Finished in " + 1e-9*duration4 + "s.");
		
	}
	
}