| /* |
| * 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.result; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import javax.jdo.Query; |
| import javax.jdo.Transaction; |
| |
| 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.pc.company.Person; |
| import org.apache.jdo.tck.query.QueryElementHolder; |
| import org.apache.jdo.tck.query.QueryTest; |
| import org.apache.jdo.tck.util.BatchTestRunner; |
| |
| /** |
| *<B>Title:</B> Distinct Candidate Instances. |
| *<BR> |
| *<B>Keywords:</B> query |
| *<BR> |
| *<B>Assertion ID:</B> A14.6.9-2. |
| *<BR> |
| *<B>Assertion Description: </B> |
| * Queries against an extent always consider only distinct candidate instances, |
| * regardless of whether distinct is specified. |
| * Queries against a collection might contain duplicate candidate instances; |
| * the distinct keyword removes duplicates from the candidate collection |
| * in this case. |
| */ |
| public class DistinctCandidateInstances extends QueryTest { |
| |
| /** */ |
| private static final String ASSERTION_FAILED = |
| "Assertion A14.6.9-2 (DistintCandidateInstances) 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*/ null, |
| /*VARIABLES*/ "Project p", |
| /*PARAMETERS*/ null, |
| /*IMPORTS*/ null, |
| /*GROUP BY*/ null, |
| /*ORDER BY*/ null, |
| /*FROM*/ null, |
| /*TO*/ null), |
| new QueryElementHolder( |
| /*UNIQUE*/ null, |
| /*RESULT*/ "DISTINCT", |
| /*INTO*/ null, |
| /*FROM*/ Employee.class, |
| /*EXCLUDE*/ null, |
| /*WHERE*/ null, |
| /*VARIABLES*/ "Project p", |
| /*PARAMETERS*/ null, |
| /*IMPORTS*/ null, |
| /*GROUP BY*/ null, |
| /*ORDER BY*/ null, |
| /*FROM*/ null, |
| /*TO*/ null) |
| }; |
| |
| /** |
| * The expected results of valid queries. |
| */ |
| private Object[] expectedResult = { |
| getTransientCompanyModelInstancesAsList(new String[]{"emp1", "emp1"}), |
| getTransientCompanyModelInstancesAsList(new String[]{"emp1"}) |
| }; |
| |
| /** |
| * 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(DistinctCandidateInstances.class); |
| } |
| |
| /** */ |
| public void testExtentQueries() { |
| if (isUnconstrainedVariablesSupported()) { |
| 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]); |
| } |
| } |
| } |
| |
| /** */ |
| public void testCollectionQueries() { |
| String singleStringQuery = "SELECT FROM " + Person.class.getName(); |
| String singleStringDistinctQuery = |
| "SELECT DISTINCT FROM " + Person.class.getName(); |
| |
| List candidates = getPersistentCompanyModelInstancesAsList( |
| new String[]{"emp1", "emp1"}); |
| Query query = pm.newQuery(); |
| query.setClass(Person.class); |
| query.setCandidates(candidates); |
| query.setResult("this"); |
| executeJDOQuery(ASSERTION_FAILED, query, singleStringQuery, |
| false, null, expectedResult[0], true); |
| |
| query.setResult("DISTINCT this"); |
| executeJDOQuery(ASSERTION_FAILED, query, singleStringDistinctQuery, |
| false, null, expectedResult[1], true); |
| } |
| |
| /** |
| * @see JDO_Test#localSetUp() |
| */ |
| protected void localSetUp() { |
| addTearDownClass(CompanyModelReader.getTearDownClasses()); |
| loadAndPersistCompanyModel(getPM()); |
| } |
| |
| } |