| /* |
| * Copyright (c) 2011, 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: |
| // Vikram Bhatia - initial API and implementation |
| package org.eclipse.persistence.testing.tests.queries.optimization; |
| |
| import org.eclipse.persistence.expressions.Expression; |
| import org.eclipse.persistence.queries.ReadObjectQuery; |
| import org.eclipse.persistence.sessions.UnitOfWork; |
| |
| import org.eclipse.persistence.testing.models.vehicle.CarOwner; |
| import org.eclipse.persistence.testing.framework.TestCase; |
| import org.eclipse.persistence.testing.framework.TestErrorException; |
| |
| /** |
| * Test select list with multiple joined attributes specified in an order |
| */ |
| public class MultipleJoinedAttributeQueryTest extends TestCase { |
| private CarOwner owner = null; |
| |
| public MultipleJoinedAttributeQueryTest() { |
| setDescription("Test select list with multiple joined attributes specified in an order."); |
| } |
| |
| @Override |
| public void test() { |
| UnitOfWork uow = getSession().acquireUnitOfWork(); |
| |
| ReadObjectQuery query = new ReadObjectQuery(CarOwner.class); |
| Expression rootExpression = query.getExpressionBuilder(); |
| |
| // Add joined attribute car.engineType. |
| Expression expression = rootExpression.getAllowingNull("car"); |
| query.addJoinedAttribute(expression); |
| expression = expression.getAllowingNull("engineType"); |
| query.addJoinedAttribute(expression); |
| |
| // Add joined attribute lastCar.fuelType. |
| expression = rootExpression.getAllowingNull("lastCar"); |
| query.addJoinedAttribute(expression); |
| expression = expression.get("fuelType"); |
| query.addJoinedAttribute(expression); |
| |
| // Add joined attribute car.fuelType. |
| expression = rootExpression.getAllowingNull("car"); |
| query.addJoinedAttribute(expression); |
| expression = expression.get("fuelType"); |
| query.addJoinedAttribute(expression); |
| |
| owner = (CarOwner)uow.executeQuery(query); |
| } |
| |
| @Override |
| public void verify() { |
| if (owner == null || owner.getCar() == null || owner.getCar().getFuelType() == null) { |
| throw new TestErrorException("CarOwner or Car or FuelType is not found."); |
| } |
| |
| if (!owner.getCar().getFuelType().getFuelDescription().equals("Petrol")) { |
| throw new TestErrorException("Car Fuel Type is expected to be Petrol, but found " + owner.getCar().getFuelType().getFuelDescription()); |
| } |
| |
| } |
| } |