cache/src/example/QueryTest.java

/*******************************************************************************
 * Copyright (c) 1998, 2012 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 impl
 ******************************************************************************/
package example;

import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.Query;

import model.Order;

/**
 * Test the performance of reading an Order object model.
 * @author James Sutherland
 */
public class QueryTest extends Test {

    public static void main(String[] args) throws Exception {
        try {
            QueryTest test = new QueryTest();
            test.setup();
            test.test();
        } catch (Exception error) {
            error.printStackTrace();
        }
        System.exit(0);
    }

    public void runTest(EntityManagerFactory factory) {
        EntityManager em = factory.createEntityManager();
        Query query = em.createNamedQuery("findOrdersByCustomer");
        int index = this.random.nextInt(this.customerIds.length);
        query.setParameter("customerId", this.customerIds[index]);
        List<Order> result = query.getResultList();
        for (Order order : result) {
            order.getCustomer().toString();
            order.getOrderLines().size();
        }
        em.close();
    }
}