/*
* Copyright 2008 Udai Gupta
*
* 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.castor.cpa.test.test77;
import java.sql.Statement;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.castor.cpa.test.framework.CPATestCase;
import org.castor.cpa.test.framework.xml.types.DatabaseEngineType;
import org.exolab.castor.jdo.Database;
import org.exolab.castor.jdo.OQLQuery;
import org.exolab.castor.jdo.QueryResults;
public final class TestQueryFinalize extends CPATestCase {
/**
* The <a href="http://jakarta.apache.org/commons/logging/">Jakarta Commons
* Logging</a> instance used for all logging.
*/
private static final Log LOG = LogFactory.getLog(TestQueryFinalize.class);
private static final String DBNAME = "test77";
private static final String MAPPING = "/org/castor/cpa/test/test77/mapping.xml";
private Database _db;
public TestQueryFinalize(final String name) {
super(name);
}
// Test are only included/excluded for engines that have been tested with this test suite.
public boolean include(final DatabaseEngineType engine) {
return (engine == DatabaseEngineType.DERBY)
|| (engine == DatabaseEngineType.HSQL)
|| (engine == DatabaseEngineType.MYSQL)
|| (engine == DatabaseEngineType.ORACLE)
|| (engine == DatabaseEngineType.POSTGRESQL);
}
/**
* Get a JDO database
*/
public void setUp() throws Exception {
_db = getJDOManager(DBNAME, MAPPING).getDatabase();
_db.begin();
LOG.info("Delete everything");
Statement stmt = _db.getJdbcConnection().createStatement();
stmt.executeUpdate("delete from test77_depend2");
stmt.executeUpdate("delete from test77_master");
stmt.executeUpdate("delete from test77_depend1");
_db.commit();
}
public void tearDown() throws Exception {
if (_db.isActive()) {
_db.rollback();
}
_db.close();
}
/**
* Query will be garbage collectable after return
*/
private QueryResults getResults(final Database db) throws Exception {
OQLQuery query = db.getOQLQuery("SELECT t FROM "
+ Master.class.getName() + " t");
return query.execute();
}
public void testQueryFinalize() throws Exception {
LOG.info("Create many master objects");
_db.begin();
for (int i = 0; i < 100; i++) {
Master master = new Master();
_db.create(master);
}
_db.commit();
LOG.info("query master objects");
try {
_db.begin();
QueryResults results = getResults(_db);
LOG.info("query can be garbage collected");
while (results.hasMore()) {
Master master = (Master) results.next();
LOG.info(master.getId());
}
_db.commit();
} catch (Exception e) {
fail("Exception thrown iterating over results : " + e);
}
}
}