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/*
* Copyright (c) 1998, 2021 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 v. 2.0 which is available at
* http://www.eclipse.org/legal/epl-2.0,
* or the Eclipse Distribution License v. 1.0 which is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
*/
// Contributors:
// Oracle - initial API and implementation from Oracle TopLink
package org.eclipse.persistence.testing.tests.performance.reading;
import java.util.*;
import org.eclipse.persistence.queries.*;
import org.eclipse.persistence.expressions.*;
import org.eclipse.persistence.testing.models.performance.toplink.*;
import org.eclipse.persistence.testing.framework.*;
/**
* This test compares the performance of read all vs in-memory read all.
*/
public class ReadAllvsInMemoryTest extends PerformanceComparisonTestCase {
protected List allObjects;
public ReadAllvsInMemoryTest() {
setDescription("This test compares the performance of read all vs in-memory read all.");
addReadAllInMemoryTest();
}
/**
* Fill the cache.
*/
@Override
public void setup() {
allObjects = getSession().readAllObjects(Employee.class);
}
/**
* Read all employees with salary {@literal >} 0.
*/
@Override
public void test() throws Exception {
ReadAllQuery query = new ReadAllQuery(Employee.class);
ExpressionBuilder builder = new ExpressionBuilder();
query.setSelectionCriteria(builder.get("salary").greaterThan(0));
List results = (List)getSession().executeQuery(query);
}
/**
* Read all employees in-memory.
*/
public void addReadAllInMemoryTest() {
PerformanceComparisonTestCase test = new PerformanceComparisonTestCase() {
@Override
public void test() {
ReadAllQuery query = new ReadAllQuery(Employee.class);
ExpressionBuilder builder = new ExpressionBuilder();
query.setSelectionCriteria(builder.get("salary").greaterThan(0));
query.checkCacheOnly();
List results = (List)getSession().executeQuery(query);
}
};
test.setName("ReadAllInMemoryTest");
test.setAllowableDecrease(2000);
addTest(test);
}
}