/******************************************************************************* | |
* Copyright (c) 1998, 2013 Oracle and/or its affiliates. All rights reserved. | |
* This program and the accompanying materials are made available under the | |
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 | |
* which accompanies this distribution. | |
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html | |
* and the Eclipse Distribution License is available at | |
* http://www.eclipse.org/org/documents/edl-v10.php. | |
* | |
* Contributors: | |
* Oracle - initial API and implementation from Oracle TopLink | |
******************************************************************************/ | |
package org.eclipse.persistence.testing.tests.performance.java; | |
import java.util.*; | |
import org.eclipse.persistence.testing.framework.*; | |
/** | |
* This test compares the performance between HashMap and Hashtable. | |
*/ | |
public class LinkedHashMapTest extends PerformanceComparisonTestCase { | |
public static int ITERATIONS = 50000; | |
protected Object[] values; | |
public LinkedHashMapTest() { | |
setName("LinkedHashMap vs LinkedList PerformanceComparisonTest"); | |
setDescription("Compares the performance between LinkedHashMap and Hashtable with LinkedList."); | |
addLinkedListTest(); | |
this.values = new Object[100]; | |
for (int size = 0; size < 100; size++) { | |
this.values[size] = new Object(); | |
} | |
} | |
/** | |
* LinkedHashMap. | |
*/ | |
public void test() throws Exception { | |
LinkedHashMap map = new LinkedHashMap(10); | |
for (int size = 0; size < 100; size++) { | |
map.put(values[size], values[size]); | |
} | |
} | |
/** | |
* Linked List. | |
*/ | |
public void addLinkedListTest() { | |
PerformanceComparisonTestCase test = new PerformanceComparisonTestCase() { | |
public void test() { | |
LinkedList list = new LinkedList(); | |
for (int size = 0; size < 100; size++) { | |
list.add(values[size]); | |
if (list.size() > 10) { | |
list.removeFirst(); | |
} | |
} | |
} | |
}; | |
test.setName("LinkedListTest"); | |
test.setAllowableDecrease(40); | |
addTest(test); | |
} | |
} |