| /* |
| * 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.queries; |
| |
| import java.util.Vector; |
| |
| import org.eclipse.persistence.internal.sessions.AbstractSession; |
| import org.eclipse.persistence.sessions.Session; |
| import org.eclipse.persistence.sessions.UnitOfWork; |
| import org.eclipse.persistence.expressions.ExpressionBuilder; |
| import org.eclipse.persistence.queries.ReadAllQuery; |
| import org.eclipse.persistence.queries.DatabaseQuery; |
| import org.eclipse.persistence.queries.QueryRedirector; |
| import org.eclipse.persistence.sessions.DatabaseRecord; |
| |
| import org.eclipse.persistence.testing.framework.*; |
| import org.eclipse.persistence.testing.models.employee.domain.Employee; |
| |
| /** |
| * Tests queries that use a redirect. With a redirect we would see null pointer |
| * exception . This only happens with redirectors because if there is no |
| * redirector then the original query is not cloned when it is executed against |
| * the UOW's parent Session. So by the time we register the Objects, after the |
| * query has been executed against the parent session, the descriptor will have |
| * been set. |
| * When there is a redirector, the Descriptor is never set on the original query |
| * because the parent Session is actually dealing with a cloned query. So you |
| * get a NullPointerException during registration of the Objects returned from |
| * the query. |
| * BUG# 2692956 |
| * |
| * @author Guy Pelletier |
| * @version 1.0 January 08/03 |
| */ |
| public class |
| |
| RedirectQueryOnUOWTest extends TestCase { |
| Exception m_exceptionCaught; |
| |
| public RedirectQueryOnUOWTest() { |
| } |
| |
| @Override |
| public void reset() { |
| getSession().getIdentityMapAccessor().initializeIdentityMaps(); |
| } |
| |
| @Override |
| protected void setup() { |
| m_exceptionCaught = null; |
| getSession().getIdentityMapAccessor().initializeIdentityMaps(); |
| } |
| |
| @Override |
| public void test() { |
| ReadAllQuery r = |
| new ReadAllQuery(Employee.class, (new ExpressionBuilder()).get("firstName").equal("Jill")); |
| r.setRedirector(new StupidRedirector()); |
| |
| UnitOfWork uow = getSession().acquireUnitOfWork(); |
| |
| try { |
| Vector employees = (Vector)uow.executeQuery(r); |
| } catch (NullPointerException e) { |
| m_exceptionCaught = e; |
| } |
| } |
| |
| @Override |
| protected void verify() { |
| if (m_exceptionCaught != null) { |
| throw new TestErrorException("NullPointerException was thrown when executing a query with a redirect", |
| m_exceptionCaught); |
| } |
| } |
| } |
| |
| class StupidRedirector implements QueryRedirector { |
| @Override |
| public Object invokeQuery(DatabaseQuery arg0, org.eclipse.persistence.sessions.Record arg1, Session arg2) { |
| // change code to do the correct class cast. |
| // Also for this test case to be relevant a completely different query |
| // must be executed. |
| // This bug was a flaw with the pre session read refactoring design, so |
| // the test is no longer really relevant. |
| ReadAllQuery stupidQuery = |
| new ReadAllQuery(Employee.class, (new ExpressionBuilder()).get("firstName").equal("Bob")); |
| return ((AbstractSession)arg2).executeQuery(stupidQuery, (DatabaseRecord)arg1); |
| } |
| } |