jpa/eclipselink.jpa.test/src/it/java/org/eclipse/persistence/testing/tests/jpa/performance/reading/JPA2ReadAllEmployeeComplexExpressionPerformanceComparisonTest.java

/*
 * 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.jpa.performance.reading;

import java.util.*;
import jakarta.persistence.*;
import jakarta.persistence.criteria.CriteriaBuilder;
import jakarta.persistence.criteria.CriteriaQuery;
import jakarta.persistence.criteria.Join;
import jakarta.persistence.criteria.Root;

import org.eclipse.persistence.testing.models.jpa.performance2.Employee;
import org.eclipse.persistence.testing.models.jpa.performance2.PhoneNumber;

/**
 * This test compares the performance of read all Employee.
 */
public class JPA2ReadAllEmployeeComplexExpressionPerformanceComparisonTest extends JPAReadPerformanceComparisonTest {
    public JPA2ReadAllEmployeeComplexExpressionPerformanceComparisonTest() {
        super(false);
        setDescription("This test compares the performance of read all Employee in a criteria.");
    }

    /**
     * Read all.
     */
    @Override
    public void test() throws Exception {
        EntityManager em = createEntityManager();
        CriteriaBuilder qb = em.getCriteriaBuilder();
        CriteriaQuery<Employee> criteriaQuery = qb.createQuery(Employee.class);
        Root<Employee> emp = criteriaQuery.from(Employee.class);
        Join<Employee, PhoneNumber> phone = emp.join("phoneNumbers");
        criteriaQuery.where(
                qb.and(
                        qb.equal(emp.get("firstName"), qb.parameter(String.class, "firstName")),
                        qb.equal(emp.get("lastName"), qb.parameter(String.class, "lastName")),
                        qb.equal(emp.get("address").get("city"), qb.parameter(String.class, "city")),
                        qb.equal(phone.get("areaCode"), qb.parameter(String.class, "areaCode"))));
        Query query = em.createQuery(criteriaQuery);
        query.setParameter("firstName", "Bob");
        query.setParameter("lastName", "Smith%");
        query.setParameter("city", "Toronto");
        query.setParameter("areaCode", "123");
        List result = list(query, em);
        result.size();
        em.close();
    }
}