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package ctf.jdo.tc0x;
import java.util.Enumeration;
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;
import org.exolab.castor.jdo.OQLQuery;
import org.exolab.castor.jdo.PersistenceException;
/**
* Tests that modification to read only objects are not persist in the
* database.
*/
public final class TestReadOnly extends CastorTestCase {
/**
* 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(TestReadOnly.class);
private static final String NEW_VALUE = "new value";
private JDOCategory _category;
private Database _db;
/**
* Constructor
*
* @param category the test suite that this test case belongs
*/
public TestReadOnly(final TestHarness category) {
super(category, "TC03", "Read only tests");
_category = (JDOCategory) category;
}
/**
* Get a jdo.Database and create a test object for readOnly test
*/
public void setUp() throws PersistenceException {
// Open transaction in order to perform JDO operations
_db = _category.getDatabase();
_db.begin();
// Determine if test object exists, if not create it.
// If it exists, set the name to some predefined value
// that this test will later override.
OQLQuery oql = _db.getOQLQuery("SELECT object FROM "
+ Sample.class.getName() + " object WHERE id = $1");
oql.bind(Sample.DEFAULT_ID);
Enumeration enumeration = oql.execute();
Sample object;
if (enumeration.hasMoreElements()) {
object = (Sample) enumeration.nextElement();
object.setValue1(Sample.DEFAULT_VALUE_1);
object.setValue2(Sample.DEFAULT_VALUE_2);
} else {
object = new Sample();
LOG.debug("Creating new object: " + object);
_db.create(object);
}
_db.commit();
}
/**
* Tests that modification to read only objects are not persist in the
* database.
*/
public void runTest() throws PersistenceException {
OQLQuery oql;
Sample object;
Enumeration enumeration;
// load an object using readOnly mode
_db.begin();
oql = _db.getOQLQuery("SELECT object FROM "
+ Sample.class.getName() + " object WHERE id = $1");
oql.bind(Sample.DEFAULT_ID);
enumeration = oql.execute(Database.READONLY);
object = (Sample) enumeration.nextElement();
LOG.debug("Retrieved object: " + object);
object.setValue1(NEW_VALUE);
LOG.debug("Modified object: " + object);
_db.commit();
// read the object from another transaction to see
// if changes is not persisted.
_db.begin();
oql.bind(Sample.DEFAULT_ID);
enumeration = oql.execute(Database.READONLY);
object = (Sample) enumeration.nextElement();
LOG.debug("Retrieved object: " + object);
if (object.getValue1().equals(NEW_VALUE)) {
LOG.error("Error: modified object was stored");
fail("Modified object was stored");
} else {
LOG.debug("OK: object is read-only");
}
_db.commit();
}
/**
* Close the database used in this test
*/
public void tearDown() throws PersistenceException {
if (_db.isActive()) { _db.rollback(); }
_db.close();
}
}