| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.jdo.tck.query.jdoql; |
| |
| import org.apache.jdo.tck.JDO_Test; |
| import org.apache.jdo.tck.pc.company.CompanyModelReader; |
| import org.apache.jdo.tck.pc.company.Employee; |
| import org.apache.jdo.tck.query.QueryElementHolder; |
| import org.apache.jdo.tck.query.QueryTest; |
| import org.apache.jdo.tck.util.BatchTestRunner; |
| |
| /** |
| *<B>Title:</B> Comparing a Collection Field to Null |
| *<BR> |
| *<B>Keywords:</B> query nullcollection |
| *<BR> |
| *<B>Assertion ID:</B> A14.6.2-36. |
| *<BR> |
| *<B>Assertion Description: </B> |
| * For datastores that support <code>null</code> values for |
| * <code>Collection</code> types, it is valid to compare the field to |
| * <code>null</code>. Datastores that do not support <code>null</code> values |
| * for <code>Collection</code> types will return <code>false</code> if the query |
| * compares the field to <code>null</code>. |
| */ |
| |
| public class ComparingCollectionFieldToNull extends QueryTest { |
| |
| /** */ |
| private static final String ASSERTION_FAILED = |
| "Assertion A14.6.2-36 (ComparingCollectionFieldToNull) failed: "; |
| |
| /** |
| * The array of valid queries which may be executed as |
| * single string queries and as API queries. |
| */ |
| private static final QueryElementHolder[] VALID_QUERIES = { |
| new QueryElementHolder( |
| /*UNIQUE*/ null, |
| /*RESULT*/ null, |
| /*INTO*/ null, |
| /*FROM*/ Employee.class, |
| /*EXCLUDE*/ null, |
| /*WHERE*/ "personid == 1 && projects == null", |
| /*VARIABLES*/ null, |
| /*PARAMETERS*/ null, |
| /*IMPORTS*/ null, |
| /*GROUP BY*/ null, |
| /*ORDER BY*/ null, |
| /*FROM*/ null, |
| /*TO*/ null) |
| }; |
| |
| /** |
| * The expected results of valid queries. |
| */ |
| private Object[] expectedResult = { |
| // emp1 should be in the query result set, |
| // if the JDO Implentation supports null values for Collections |
| getTransientCompanyModelInstancesAsList( |
| isNullCollectionSupported() ? new String[]{"emp1"} : new String[]{}) |
| }; |
| |
| /** |
| * The <code>main</code> is called when the class |
| * is directly executed from the command line. |
| * @param args The arguments passed to the program. |
| */ |
| public static void main(String[] args) { |
| BatchTestRunner.run(ComparingCollectionFieldToNull.class); |
| } |
| |
| /** */ |
| public void testPositive() { |
| for (int i = 0; i < VALID_QUERIES.length; i++) { |
| executeAPIQuery(ASSERTION_FAILED, VALID_QUERIES[i], |
| expectedResult[i]); |
| executeSingleStringQuery(ASSERTION_FAILED, VALID_QUERIES[i], |
| expectedResult[i]); |
| } |
| } |
| |
| /** |
| * @see JDO_Test#localSetUp() |
| */ |
| protected void localSetUp() { |
| addTearDownClass(CompanyModelReader.getTearDownClasses()); |
| loadAndPersistCompanyModel(getPM()); |
| Employee employee = (Employee) getPersistentCompanyModelInstance("emp1"); |
| if (isNullCollectionSupported()) { |
| getPM().currentTransaction().begin(); |
| employee.setProjects(null); |
| getPM().currentTransaction().commit(); |
| } |
| } |
| } |