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OPENJPA-1123: Test for database-specific query hints 

git-svn-id: https://svn.apache.org/repos/asf/openjpa/trunk@786615 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Milosz Tylenda 2009-06-19 18:33:28 +00:00
parent 6c1cc88175
commit 79ad8c4943
1 changed files with 73 additions and 0 deletions
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openjpa-persistence-jdbc/src/test/java/org/apache/openjpa/persistence/jdbc/query/TestHintedQuery.java Normal file
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/*
* 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.query;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.Query;
import org.apache.openjpa.jdbc.conf.JDBCConfiguration;
import org.apache.openjpa.jdbc.sql.DBDictionary;
import org.apache.openjpa.jdbc.sql.MySQLDictionary;
import org.apache.openjpa.jdbc.sql.OracleDictionary;
import org.apache.openjpa.persistence.jdbc.query.domain.TimeKeeper;
import org.apache.openjpa.persistence.test.SQLListenerTestCase;
/**
* Tests database-specific query hints.
*/
public class TestHintedQuery extends SQLListenerTestCase {
public void setUp() {
super.setUp(CLEAR_TABLES, TimeKeeper.class);
}
public void testHintedQuery() {
EntityManager em = emf.createEntityManager();
em.getTransaction().begin();
em.persist(new TimeKeeper());
em.persist(new TimeKeeper());
em.getTransaction().commit();
String jpql = "SELECT tk FROM TimeKeeper tk";
String mysqlHint = "SQL_NO_CACHE";
String oracleHint = "/*+ first_rows(100) */";
Query query = em.createQuery(jpql);
query.setHint(MySQLDictionary.SELECT_HINT, mysqlHint);
query.setHint(OracleDictionary.SELECT_HINT, oracleHint);
List keepers = query.getResultList();
assertEquals(2, keepers.size());
// The dictionaries the hints are meant for should use the hints.
// Other dictionaries should ignore them.
DBDictionary dict = ((JDBCConfiguration) emf.getConfiguration())
.getDBDictionaryInstance();
if (dict instanceof MySQLDictionary) {
assertContainsSQL("SELECT " + mysqlHint + " ");
return;
}
if (dict instanceof OracleDictionary) {
assertContainsSQL("SELECT " + oracleHint + " ");
return;
}
assertNotSQL(".*" + mysqlHint + ".*");
assertNotSQL(".*" + oracleHint + ".*");
}
}