| /* |
| * 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.openjpa.persistence.jdbc; |
| |
| import javax.persistence.Query; |
| |
| import org.apache.openjpa.jdbc.conf.JDBCConfiguration; |
| import org.apache.openjpa.jdbc.sql.DB2Dictionary; |
| import org.apache.openjpa.jdbc.sql.DBDictionary; |
| import org.apache.openjpa.jdbc.sql.HSQLDictionary; |
| import org.apache.openjpa.persistence.InvalidStateException; |
| import org.apache.openjpa.persistence.OpenJPAEntityManagerSPI; |
| import org.apache.openjpa.persistence.OpenJPAPersistence; |
| import org.apache.openjpa.persistence.OpenJPAQuery; |
| import org.apache.openjpa.persistence.simple.AllFieldTypes; |
| import org.apache.openjpa.persistence.test.SQLListenerTestCase; |
| |
| public class TestOptimizeForClause |
| extends SQLListenerTestCase { |
| |
| @Override |
| public void setUp() { |
| setUp(AllFieldTypes.class); |
| } |
| |
| public void testOptimizeForClauseViaGetSingleResult() { |
| OpenJPAEntityManagerSPI em = emf.createEntityManager(); |
| DBDictionary dict = ((JDBCConfiguration) em.getConfiguration()) |
| .getDBDictionaryInstance(); |
| |
| em.getTransaction().begin(); |
| AllFieldTypes a = new AllFieldTypes(); |
| a.setIntField(123); |
| em.persist(a); |
| em.getTransaction().commit(); |
| em.clear(); |
| |
| sql.clear(); |
| Object result = em.createQuery |
| ("select o from AllFieldTypes o where o.intField = 123"). |
| getSingleResult(); |
| |
| assertNotNull(result); |
| if (dict instanceof DB2Dictionary ) { |
| assertContainsSQL(" optimize for 1 row"); |
| } |
| em.close(); |
| } |
| |
| public void testOptimizeForClauseViaHint() { |
| tstOptimizeForClause(true,false,false); |
| } |
| |
| public void testOptimizeForClauseViaFind() { |
| tstOptimizeForClause(false,true,false); |
| } |
| public void testOptimizeForClauseViaQueryHint() { |
| tstOptimizeForClause(false,true,true); |
| } |
| public void tstOptimizeForClause(boolean hint, |
| boolean find, boolean queryHint) { |
| OpenJPAEntityManagerSPI em = emf.createEntityManager(); |
| DBDictionary dict = ((JDBCConfiguration) em.getConfiguration()) |
| .getDBDictionaryInstance(); |
| |
| // hsql doesn't support optimizing; circumvent the test |
| if (dict instanceof HSQLDictionary) |
| return; |
| |
| sql.clear(); |
| try { |
| em.getTransaction().begin(); |
| if (hint || queryHint) { |
| if (hint) { |
| Query q = em.createQuery( |
| "select o from AllFieldTypes o where o.intField = :p"); |
| q.setParameter("p", 0); |
| q.setHint("openjpa.hint.OptimizeResultCount" |
| , 8); |
| q.getResultList(); |
| } |
| else { |
| OpenJPAQuery q = OpenJPAPersistence.cast (em.createQuery |
| ("select o from AllFieldTypes o where o.intField " + |
| "= :p")); |
| q.setParameter("p", 0); |
| q.setHint(OpenJPAQuery.HINT_RESULT_COUNT, 8); |
| q.getResultList(); |
| } |
| if (dict instanceof DB2Dictionary) { |
| assertEquals(1, sql.size()); |
| assertContainsSQL(" optimize for 8 row"); |
| } |
| } |
| else { |
| em.find(AllFieldTypes.class, 0); |
| if (dict instanceof DB2Dictionary ) { |
| assertEquals(1, sql.size()); |
| assertContainsSQL(" optimize for 1 row"); |
| } |
| |
| } |
| } catch (InvalidStateException pe) { |
| // if we're not using DB2, we expect an InvalidStateException. |
| if (dict instanceof DB2Dictionary) |
| throw pe; |
| } finally { |
| em.getTransaction().rollback(); |
| em.close(); |
| } |
| } |
| } |