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package ctf.jdo.tc0x;
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.DuplicateIdentityException;
import org.exolab.castor.jdo.OQLQuery;
import org.exolab.castor.jdo.PersistenceException;
import org.exolab.castor.jdo.QueryResults;
/**
* Tests for duplicate key detection.
* 1/ Try to create an object with an identity same as another loaded
* (in memory) object.
* 2/ Try to create an object with an identity same as another object what is
* not loaded by in the database.
*/
public final class TestDuplicateKey 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(TestDuplicateKey.class);
private JDOCategory _category;
private Database _db;
public TestDuplicateKey(final TestHarness category) {
super(category, "TC01", "Duplicate key detection tests");
_category = (JDOCategory) category;
}
/**
* Creates data objects used by these tests
*/
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);
QueryResults enumeration = oql.execute();
Sample object;
if (enumeration.hasMore()) {
object = (Sample) enumeration.next();
LOG.debug("Updating object: " + object);
} else {
object = new Sample();
LOG.debug("Creating new object: " + object);
_db.create(object);
}
_db.commit();
}
/**
* Calls the individual tests embedded in this test case
*/
public void runTest() throws PersistenceException {
testDuplicateIdentityAsInMemory();
testDuplicateIdentityAsInDatabase();
}
/**
* Close the database
*/
public void tearDown() throws PersistenceException {
if (_db.isActive()) { _db.rollback(); }
_db.close();
}
/**
* Try to create two objects with the same identity. This test passes
* if an DuplicateIdentityException is thrown when the second object
* with duplicated identity is created.
*/
public void testDuplicateIdentityAsInMemory()
throws PersistenceException {
// Attempt to create a new object with the same identity,
// while one is in memory. Will report duplicate key from
// the cache engine.
_db.begin();
OQLQuery oql = _db.getOQLQuery("SELECT object FROM "
+ Sample.class.getName() + " object WHERE id = $1");
oql.bind(new Integer(Sample.DEFAULT_ID));
QueryResults enumeration = oql.execute();
while (enumeration.hasMore()) {
enumeration.next();
}
Sample object = new Sample();
LOG.debug("Creating new object: " + object);
LOG.debug("Will report duplicate identity from cache engine");
try {
_db.create(object);
// expected exception
fail("DuplicateIdentityException not thrown");
LOG.error("Error: DuplicateIdentityException not thrown");
} catch (DuplicateIdentityException except) {
LOG.debug("OK: DuplicateIdentityException thrown");
} catch (PersistenceException except) {
LOG.error("Error: ", except);
throw except;
} finally {
_db.commit();
}
}
/**
* Try to create an object that has an identity which is the same
* as another object that is not loaded by in the database. This
* test case passes if a DuplicateIdentityException is thrown when
* the object with duplicated identity is created.
*/
public void testDuplicateIdentityAsInDatabase()
throws PersistenceException {
_db.begin();
Sample object = new Sample();
LOG.debug("Creating new object: " + object);
LOG.debug("Will report duplicate identity from SQL engine");
try {
_db.create(object);
LOG.error("Error: DuplicateIdentityException not thrown");
} catch (DuplicateIdentityException except) {
LOG.debug("OK: DuplicateIdentityException thrown");
} catch (PersistenceException except) {
LOG.error("Error: ", except);
} finally {
_db.commit();
}
}
}