| /* |
| * Copyright 2005 The Apache Software Foundation. |
| * |
| * Licensed 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; |
| |
| import java.util.Collection; |
| import java.util.HashSet; |
| |
| import javax.jdo.PersistenceManager; |
| import javax.jdo.Query; |
| import javax.jdo.Transaction; |
| |
| import org.apache.jdo.tck.pc.company.CompanyModelReader; |
| import org.apache.jdo.tck.pc.company.Department; |
| import org.apache.jdo.tck.util.BatchTestRunner; |
| |
| /** |
| *<B>Title:</B> Element Returned in Query Result |
| *<BR> |
| *<B>Keywords:</B> query |
| *<BR> |
| *<B>Assertion ID:</B> A14.6.2-2. |
| *<BR> |
| *<B>Assertion Description: </B> |
| An element of the candidate collection is returned in the result if: |
| <UL> |
| <LI>it is assignment compatible to the candidate <code>Class</code> of the |
| <code>Query</code>; and</LI> |
| <LI>for all variables there exists a value for which the filter expression |
| evaluates to <code>true</code>. |
| The user may denote uniqueness in the filter expression |
| by explicitly declaring an expression |
| (for example, <code>e1 != e2</code>).</LI> |
| </UL> |
| */ |
| |
| public class DenoteUniquenessInFilter extends QueryTest { |
| |
| /** */ |
| private static final String ASSERTION_FAILED = |
| "Assertion A14.6.2-2 (DenoteUniquenessInFilter) failed: "; |
| |
| /** |
| * 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(DenoteUniquenessInFilter.class); |
| } |
| |
| /** */ |
| public void test() { |
| pm = getPM(); |
| |
| try { |
| // read test data |
| CompanyModelReader reader = loadCompanyModel( |
| pm, "org/apache/jdo/tck/query/company.xml", Department.class); |
| runTest(pm, reader); |
| } |
| finally { |
| cleanupCompanyModel(pm); |
| pm.close(); |
| pm = null; |
| } |
| } |
| |
| /** */ |
| void runTest(PersistenceManager pm, CompanyModelReader reader) { |
| Query q; |
| Object result; |
| Collection expected; |
| String filter; |
| |
| Transaction tx = pm.currentTransaction(); |
| tx.begin(); |
| |
| // Scenario: only employee with personid 1 has a medicalInsurance |
| |
| // Uniqueness not specified => employee 1 qualifies => return dept1 |
| filter = |
| "employees.contains(e1) && (e1.personid == 1 && " + |
| "(employees.contains(e2) && (e2.medicalInsurance != null)))"; |
| q = pm.newQuery(Department.class, filter); |
| q.declareVariables("Employee e1; Employee e2"); |
| result = q.execute(); |
| expected = new HashSet(); |
| expected.add(reader.getDepartment("dept1")); |
| checkQueryResultWithoutOrder(ASSERTION_FAILED, result, expected); |
| |
| // Uniqueness specified => there is only a single employee qualifying => |
| // e1 != e2 does not apply => result is empty |
| filter = |
| "employees.contains(e1) && (e1.personid == 1 && " + |
| "(employees.contains(e2) && (e2.medicalInsurance != null &&" + |
| "e1 != e2)))"; |
| q = pm.newQuery(Department.class, filter); |
| q.declareVariables("Employee e1; Employee e2"); |
| result = q.execute(); |
| expected = new HashSet(); |
| checkQueryResultWithoutOrder(ASSERTION_FAILED, result, expected); |
| |
| // Changed second contains to look for null medicalInsurance => |
| // employee 1 and 2 match the two conditions => return dept1 |
| filter = |
| "employees.contains(e1) && (e1.personid == 1 && " + |
| "(employees.contains(e2) && (e2.medicalInsurance == null &&" + |
| "e1 != e2)))"; |
| q = pm.newQuery(Department.class, filter); |
| q.declareVariables("Employee e1; Employee e2"); |
| result = q.execute(); |
| expected = new HashSet(); |
| expected.add(reader.getDepartment("dept1")); |
| checkQueryResultWithoutOrder(ASSERTION_FAILED, result, expected); |
| |
| tx.commit(); |
| } |
| } |