/**
* INTERNAL: Execute the query. Get the rows and build the object from the rows.
*
* @exception DatabaseException - an error has occurred on the database
* @return java.lang.Object collection of objects resulting from execution of query.
*/
protected Object executeObjectLevelReadQuery() throws DatabaseException {
Object result = null;
if (getContainerPolicy().overridesRead()) {
return getContainerPolicy().execute();
}
if (this.descriptor.isDescriptorForInterface()) {
Object returnValue =
this.descriptor.getInterfacePolicy().selectAllObjectsUsingMultipleTableSubclassRead(this);
setExecutionTime(System.currentTimeMillis());
return returnValue;
}
List rows = getQueryMechanism().selectAllRows();
setExecutionTime(System.currentTimeMillis());
// If using 1-m joins, must set all rows.
if (hasJoining() && this.joinedAttributeManager.isToManyJoin()) {
this.joinedAttributeManager.setDataResults(rows, this.session);
}
if (this.session.isUnitOfWork()) {
result =
registerResultInUnitOfWork(
rows, (UnitOfWorkImpl) this.session, this.translationRow, true); //
} else {
result = getContainerPolicy().containerInstance(rows.size());
this.descriptor.getObjectBuilder().buildObjectsInto(this, rows, result);
}
if (this.shouldIncludeData) {
ComplexQueryResult complexResult = new ComplexQueryResult();
complexResult.setResult(result);
complexResult.setData(rows);
return complexResult;
}
// Add the other (already registered) results and return them.
if (getDescriptor().hasTablePerClassPolicy()) {
result =
containerPolicy.concatenateContainers(
result,
getDescriptor()
.getTablePerClassPolicy()
.selectAllObjectsUsingMultipleTableSubclassRead(this));
}
return result;
}
public void setup() {
ConcurrentTestRefreshWithOptimisticLocking.execute = true;
try {
getSession().getLog().write("WARNING, some tests may take 3 minutes or more");
getSession().getLog().flush();
} catch (java.io.IOException e) {
}
try {
DatabaseLogin login = (DatabaseLogin) getSession().getLogin().clone();
ConcurrentTestRefreshWithOptimisticLocking.server =
new Server(login, numThreads, numThreads + 2);
ConcurrentTestRefreshWithOptimisticLocking.server.serverSession.setSessionLog(
getSession().getSessionLog());
ConcurrentTestRefreshWithOptimisticLocking.server.login();
ConcurrentTestRefreshWithOptimisticLocking.server.copyDescriptors(getSession());
ClassDescriptor empDesc =
this.server.serverSession.getClassDescriptor(DeadLockEmployee.class);
this.oldVersionRefresh = empDesc.shouldOnlyRefreshCacheIfNewerVersion();
empDesc.onlyRefreshCacheIfNewerVersion();
} catch (ValidationException ex) {
this.verify();
}
for (int count = 0; count < numThreads; ++count) {
ConcurrentTestRefreshWithOptimisticLocking.threadList[count] =
new Thread(new ConcurrentTestRefreshWithOptimisticLocking(false, count).runnable());
ConcurrentTestRefreshWithOptimisticLocking.timeList[count] = System.currentTimeMillis();
}
}
public void watchOtherThreads() {
long startTime = System.currentTimeMillis();
while (((System.currentTimeMillis() - startTime) < (runTime + 30000))
&& ConcurrentTestRefreshWithOptimisticLocking.execute) {
for (int localIdex = 0; localIdex < numThreads; ++localIdex) {
if ((System.currentTimeMillis()
- ConcurrentTestRefreshWithOptimisticLocking.timeList[localIdex])
> 30000) {
// System.out.println(" Number: " + localIdex + " time: " + (System.currentTimeMillis() -
// this.timeList[localIdex]));
execute = false;
break;
}
}
try {
Thread.sleep(30000);
} catch (InterruptedException ex) {
throw new TestProblemException("Test thread was interrupted. Test failed to run properly");
}
}
}
public void executeUntilStopped() {
Session session =
ConcurrentTestRefreshWithOptimisticLocking.server.serverSession.acquireClientSession();
DeadLockAddress address =
(DeadLockAddress)
session.readObject(
org.eclipse.persistence.testing.tests.clientserver.DeadLockAddress.class);
DeadLockEmployee employee = (DeadLockEmployee) session.readObject(DeadLockEmployee.class);
ReadObjectQuery query;
if ((this.index % 2) != 0) {
query = new ReadObjectQuery(address);
query.refreshIdentityMapResult();
query.setCascadePolicy(DatabaseQuery.CascadeAllParts);
} else {
query = new ReadObjectQuery(employee);
query.refreshIdentityMapResult();
query.setCascadePolicy(DatabaseQuery.CascadeAllParts);
}
while (ConcurrentTestRefreshWithOptimisticLocking.execute) {
ConcurrentTestRefreshWithOptimisticLocking.timeList[this.index] = System.currentTimeMillis();
session.executeQuery(query);
}
// System.out.println("BeingShutDown");
}
/**
* INTERNAL: Check if existence can be determined without going to the database. Note that custom
* query check is not require for does exist as the custom is always used. Used by unit of work,
* and will return null if checkDatabaseIfInvalid is set and the cachekey is invalidated
*/
public Object checkEarlyReturn(
Object object, Vector primaryKey, AbstractSession session, AbstractRecord translationRow) {
// For bug 3136413/2610803 building the selection criteria from an EJBQL string or
// an example object is done just in time.
buildSelectionCriteria(session);
// Return false on null since it can't exist. Little more done in case PK not set in the query
if (object == null) {
return Boolean.FALSE;
}
ClassDescriptor descriptor = session.getDescriptor(object.getClass());
if (primaryKey == null) {
primaryKey = getPrimaryKey();
if (primaryKey == null) {
primaryKey =
descriptor.getObjectBuilder().extractPrimaryKeyFromObject(object, session, true);
}
}
if ((primaryKey == null) || (primaryKey.contains(null))) {
return Boolean.FALSE;
}
// Need to do the cache check first if flag set or if we should check the cache only for
// existence.
if ((shouldCheckCacheForDoesExist() || this.checkCacheFirst)
&& !descriptor.isDescriptorForInterface()) {
// If this is a UOW and modification queries have been executed, the cache cannot be trusted.
if (this.checkDatabaseIfInvalid
&& (session.isUnitOfWork() && ((UnitOfWorkImpl) session).shouldReadFromDB())) {
return null;
}
CacheKey cacheKey;
Class objectClass = object.getClass();
AbstractSession tempSession = session;
while (tempSession.isUnitOfWork()) { // could be nested lets check all UOWs
cacheKey =
tempSession
.getIdentityMapAccessorInstance()
.getCacheKeyForObjectForLock(primaryKey, objectClass, descriptor);
if (cacheKey != null) {
// If in the UOW cache it can't be invalid.
return Boolean.TRUE;
}
tempSession = ((UnitOfWorkImpl) tempSession).getParent();
}
// Did not find it registered in UOW so check main cache and check for invalidation.
cacheKey =
tempSession
.getIdentityMapAccessorInstance()
.getCacheKeyForObject(primaryKey, objectClass, descriptor);
if ((cacheKey != null)) {
// Assume that if there is a cachekey, object exists.
if (this.checkDatabaseIfInvalid) {
checkDescriptor(object, session);
if (this.descriptor
.getCacheInvalidationPolicy()
.isInvalidated(cacheKey, System.currentTimeMillis())) {
return null;
}
}
Object objectFromCache = cacheKey.getObject();
if ((session.isUnitOfWork()) && ((UnitOfWorkImpl) session).wasDeleted(objectFromCache)) {
if (shouldCheckCacheForDoesExist()) {
return Boolean.FALSE;
}
} else {
return Boolean.TRUE;
}
} else if (shouldCheckCacheForDoesExist()) {
// We know its not in cache, and a checkcache policy so return false.
return Boolean.FALSE;
}
}
// Check if we have to assume that the object does not exist.
if (shouldAssumeNonExistenceForDoesExist()) {
return Boolean.FALSE;
}
// Check to see if we only need to check that the object contains a primary key.
if (shouldAssumeExistenceForDoesExist()) {
return Boolean.TRUE;
}
return null;
}
