| /* |
| * 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 org.eclipse.persistence.platform.database.OraclePlatform; |
| import org.eclipse.persistence.queries.ReadAllQuery; |
| import org.eclipse.persistence.testing.framework.PerformanceComparisonTestCase; |
| import org.eclipse.persistence.testing.models.performance.toplink.Employee; |
| |
| /** |
| * Compares ReadAllQuery returning all rows to a Query using Oracle's Rownum support |
| * to filter out all but the last row using FirstResults=size-1. |
| */ |
| public class ReadAllFirstResultVsRownumFilteringTest extends PerformanceComparisonTestCase { |
| public ReadAllFirstResultVsRownumFilteringTest() { |
| setDescription("This test compares the performance of Oracle pagination vs non pagination."); |
| addReadAllRownumFilteringTest(); |
| addReadAllFirstResultTest(); |
| } |
| int size; |
| @Override |
| public void setup() throws Throwable { |
| super.setup(); |
| size = (getSession().readAllObjects(Employee.class)).size(); |
| } |
| |
| /** |
| * Read all employees with cursored stream. |
| */ |
| @Override |
| public void test() throws Exception { |
| ReadAllQuery query = new ReadAllQuery(Employee.class); |
| getSession().executeQuery(query); |
| } |
| |
| /** |
| * Read all employees with scrollable cursor. |
| */ |
| public void addReadAllRownumFilteringTest() { |
| PerformanceComparisonTestCase test = new PerformanceComparisonTestCase() { |
| @Override |
| public void test() { |
| ReadAllQuery query = new ReadAllQuery(Employee.class); |
| query.setFirstResult(size-1); |
| getSession().executeQuery(query); |
| } |
| |
| |
| }; |
| test.setName("ReadAllRownumFilteringTest"); |
| test.setAllowableDecrease(350); |
| addTest(test); |
| } |
| |
| /** |
| * Read all employees, base test for comparison. |
| */ |
| public void addReadAllFirstResultTest() { |
| PerformanceComparisonTestCase test = new PerformanceComparisonTestCase() { |
| @Override |
| public void test() { |
| ReadAllQuery query = new ReadAllQuery(Employee.class); |
| query.setFirstResult(size-1); |
| getSession().executeQuery(query); |
| } |
| @Override |
| public void startTest() { |
| getSession().getPlatform().setShouldUseRownumFiltering(false); |
| } |
| |
| /** |
| * Allows any test specific setup before starting the test run. |
| */ |
| @Override |
| public void endTest() { |
| getSession().getPlatform().setShouldUseRownumFiltering(true); |
| } |
| |
| }; |
| test.setName("FirstResultTest"); |
| addTest(test); |
| } |
| } |