/*
* Copyright 2005 Werner Guttmann
*
* 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 ctf.jdo.tc9x;
import harness.CastorTestCase;
import harness.TestHarness;
import jdo.JDOCategory;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.exolab.castor.jdo.Database;
/**
* Tests that modification to read only objects are not persist in the
* database.
*/
public final class TestPolymorphismInAThreadedEnv extends CastorTestCase {
private static final Log LOG =
LogFactory.getLog(TestPolymorphismInAThreadedEnv.class);
private static final int REPS = 100;
private JDOCategory _category;
/**
* Constructor
* @param category the test suite that this test case belongs
*/
public TestPolymorphismInAThreadedEnv(final TestHarness category) {
super(category, "TC98", "Polymorphism tests in a threaded environment");
_category = (JDOCategory) category;
}
/**
* Tests that modification to read only objects are not persist in the
* database.
*/
public void runTest() throws Exception {
testLoadContainer();
testLoadDerived();
testLoadContainerThenDerived();
testLoadContainerAndDerivedThreaded();
}
protected Container loadContainer() throws Exception {
Database db = _category.getDatabase();
db.begin();
Container container;
try {
container = (Container) db.load(Container.class, "200");
db.commit();
} catch (Exception ex) {
db.rollback();
throw ex;
} finally {
db.close();
}
return container;
}
private Derived loadDerived() throws Exception {
Database db = _category.getDatabase();
db.begin();
Derived derived;
try {
derived = (Derived) db.load(Derived.class, "100");
db.commit();
} catch (Exception ex) {
db.rollback();
throw ex;
} finally {
db.close();
}
return derived;
}
private Container loadContainerThenDerived() throws Exception {
Database db = _category.getDatabase();
db.begin();
Container container = null;
try {
container = (Container) db.load(Container.class, "200");
db.load(Derived.class, "100");
db.commit();
} catch (Exception ex) {
db.rollback();
throw ex;
} finally {
db.close();
}
return container;
}
public void testLoadContainer() throws Exception {
LOG.debug("First we load a Container in its own transaction");
Object o = loadContainer();
LOG.debug("loadContainer: " + o);
}
public void testLoadDerived() throws Exception {
LOG.debug("Second we load a Derived in its own transaction");
Object o = loadDerived();
LOG.debug("loadDerived: " + o);
}
public void testLoadContainerThenDerived() throws Exception {
LOG.debug("Third we load a Container and a Derived in one transaction");
Object o = loadContainerThenDerived();
LOG.debug("loadContainerThenDerived: " + o);
}
public void testLoadContainerAndDerivedThreaded() {
int count = 0;
try {
LOG.debug("Forth we load Container and Derived in seperate "
+ "threads in their own transactions");
Thread thread = new Thread(new TreadedContainerLoader());
thread.start();
for (int i = 0; i < REPS; i++) {
count = i;
loadDerived();
}
LOG.debug("First thread successfully loaded " + (count + 1) + " Derived");
thread.join();
} catch (Exception ex) {
LOG.error("Exception on first thread loading Derived on "
+ (count + 1) + "th try", ex);
}
}
class TreadedContainerLoader implements Runnable {
public void run() {
int count = 0;
try {
for (int i = 0; i < REPS; i++) {
count = i;
loadContainer();
}
LOG.debug("Second thread successfully loaded " + (count + 1)
+ " Containers");
} catch (Exception ex) {
LOG.error("Exception on second thread loading Container on "
+ (count + 1) + "th try", ex);
}
}
}
}