Examples with UnitOfWorkImpl org.eclipse.persistence.internal.sessions.UnitOfWorkImpl used on opensource projects

Example 31 with UnitOfWorkImpl

use of org.eclipse.persistence.internal.sessions.UnitOfWorkImpl in project eclipselink by eclipse-ee4j.

the class ArrayCollectionMappingHelper method mergeChangesIntoObjectWithoutOrder.

/**
 * Merge changes from the source to the target object.
 * Make the necessary removals and adds and map key modifications.
 */
private void mergeChangesIntoObjectWithoutOrder(Object target, ChangeRecord changeRecord, Object source, MergeManager mergeManager, AbstractSession targetSession) {
    EISCollectionChangeRecord sdkChangeRecord = (EISCollectionChangeRecord) changeRecord;
    ContainerPolicy cp = getContainerPolicy();
    AbstractSession session = mergeManager.getSession();
    Object targetCollection = null;
    if (sdkChangeRecord.getOwner().isNew()) {
        targetCollection = cp.containerInstance(sdkChangeRecord.getAdds().size());
    } else {
        targetCollection = getRealCollectionAttributeValueFromObject(target, session);
    }
    List removes = sdkChangeRecord.getRemoves();
    List adds = sdkChangeRecord.getAdds();
    List changedMapKeys = sdkChangeRecord.getChangedMapKeys();
    synchronized (targetCollection) {
        for (Object removed : removes) {
            Object removeElement = buildRemovedElementFromChangeSet(removed, mergeManager, targetSession);
            Object targetElement = null;
            for (Object iter = cp.iteratorFor(targetCollection); cp.hasNext(iter); ) {
                targetElement = cp.next(iter, session);
                if (compareElements(targetElement, removeElement, session)) {
                    // matching element found - skip the rest of them
                    break;
                }
            }
            if (targetElement != null) {
                // a matching element was found, remove it
                cp.removeFrom(targetElement, targetCollection, session);
            }
        }
        for (Object added : adds) {
            Object addElement = buildAddedElementFromChangeSet(added, mergeManager, targetSession);
            cp.addInto(addElement, targetCollection, session);
        }
        for (Object changed : changedMapKeys) {
            Object changedMapKeyElement = buildAddedElementFromChangeSet(changed, mergeManager, targetSession);
            Object originalElement = ((UnitOfWorkImpl) session).getOriginalVersionOfObject(changedMapKeyElement);
            cp.removeFrom(originalElement, targetCollection, session);
            cp.addInto(changedMapKeyElement, targetCollection, session);
        }
    }
    // reset the attribute to allow for set method to re-morph changes if the collection is not being stored directly
    setRealAttributeValueInObject(target, targetCollection);
}

Example 32 with UnitOfWorkImpl

use of org.eclipse.persistence.internal.sessions.UnitOfWorkImpl in project eclipselink by eclipse-ee4j.

the class ReferenceMapping method preInsert.

/**
 * INTERNAL:
 * Insert privately owned parts
 */
@Override
public void preInsert(WriteObjectQuery query) throws DatabaseException, OptimisticLockException {
    // Checks if privately owned parts should be inserted or not.
    if (!shouldObjectModifyCascadeToParts(query)) {
        return;
    }
    // Get the privately owned parts
    Object object = getRealAttributeValueFromObject(query.getObject(), query.getSession());
    if (object == null) {
        return;
    }
    if (isPrivateOwned()) {
        // No need to set changeSet as insert is a straight copy anyway
        InsertObjectQuery insertQuery = new InsertObjectQuery();
        insertQuery.setIsExecutionClone(true);
        insertQuery.setObject(object);
        insertQuery.setCascadePolicy(query.getCascadePolicy());
        query.getSession().executeQuery(insertQuery);
    } else {
        ObjectChangeSet changeSet = null;
        UnitOfWorkChangeSet uowChangeSet = null;
        if (query.getSession().isUnitOfWork() && (((UnitOfWorkImpl) query.getSession()).getUnitOfWorkChangeSet() != null)) {
            uowChangeSet = (UnitOfWorkChangeSet) ((UnitOfWorkImpl) query.getSession()).getUnitOfWorkChangeSet();
            changeSet = (ObjectChangeSet) uowChangeSet.getObjectChangeSetForClone(object);
        }
        WriteObjectQuery writeQuery = new WriteObjectQuery();
        writeQuery.setIsExecutionClone(true);
        writeQuery.setObject(object);
        writeQuery.setObjectChangeSet(changeSet);
        writeQuery.setCascadePolicy(query.getCascadePolicy());
        query.getSession().executeQuery(writeQuery);
    }
}

Example 33 with UnitOfWorkImpl

use of org.eclipse.persistence.internal.sessions.UnitOfWorkImpl in project eclipselink by eclipse-ee4j.

the class ReportQuery method executeDatabaseQuery.

/**
 * INTERNAL:
 * Execute the query.
 * Get the rows and build the objects or report data from the rows.
 * @exception  DatabaseException - an error has occurred on the database
 * @return either collection of objects, or report data resulting from execution of query.
 */
@Override
public Object executeDatabaseQuery() throws DatabaseException {
    // ensure a pessimistic locking query will go down the write connection
    if (isLockQuery() && getSession().isUnitOfWork()) {
        UnitOfWorkImpl unitOfWork = (UnitOfWorkImpl) getSession();
        // transaction early on the parent also.
        if (isLockQuery()) {
            if ((!unitOfWork.getCommitManager().isActive()) && (!unitOfWork.wasTransactionBegunPrematurely())) {
                unitOfWork.beginTransaction();
                unitOfWork.setWasTransactionBegunPrematurely(true);
            }
        }
    }
    if (getContainerPolicy().overridesRead()) {
        return getContainerPolicy().execute();
    }
    if (getQueryId() == 0) {
        setQueryId(getSession().getNextQueryId());
    }
    setExecutionTime(System.currentTimeMillis());
    if (getDescriptor().isDescriptorForInterface()) {
        return getDescriptor().getInterfacePolicy().selectAllObjectsUsingMultipleTableSubclassRead(this);
    }
    return buildObjects(getQueryMechanism().selectAllReportQueryRows());
}

Example 34 with UnitOfWorkImpl

use of org.eclipse.persistence.internal.sessions.UnitOfWorkImpl in project eclipselink by eclipse-ee4j.

the class AbstractSynchronizationListener method beforeCompletion.

/**
 * INTERNAL:
 * This method performs the logic that occurs at transaction
 * completion time. This includes issuing the SQL, etc.
 * This method executes within the transaction context of the caller of
 * transaction.commit(), or in the case of container-managed transactions,
 * in the context of the method for which the Container started the transaction.
 */
@Override
public void beforeCompletion() {
    UnitOfWorkImpl uow = getUnitOfWork();
    // it's a purely sequencing listener - nothing to do in beforeCompletion.
    if (unitOfWork == null) {
        return;
    }
    try {
        Object status = getTransactionController().getTransactionStatus();
        getTransactionController().logTxStateTrace(uow, "TX_beforeCompletion", status);
        // CR# 3452053
        session.startOperationProfile(SessionProfiler.JtsBeforeCompletion);
        // In case jts transaction was internally started but completed
        // directly by TransactionManager this flag is still set to true.
        getSession().setWasJTSTransactionInternallyStarted(false);
        // If the uow is not active then somebody somewhere messed up
        if (!uow.isActive()) {
            throw TransactionException.inactiveUnitOfWork(uow);
        }
        // Bail out if we don't think we should actually issue the SQL
        if (!getTransactionController().canIssueSQLToDatabase_impl(status)) {
            // Must force concurrency mgrs active thread if in nested transaction
            if (getSession().isInTransaction()) {
                getSession().getTransactionMutex().setActiveThread(Thread.currentThread());
                if (getUnitOfWork().wasTransactionBegunPrematurely()) {
                    getUnitOfWork().setWasTransactionBegunPrematurely(false);
                }
                getSession().rollbackTransaction();
            }
            getSession().releaseJTSConnection();
            return;
        }
        // Must force concurrency mgrs active thread if in nested transaction
        if (getSession().isInTransaction()) {
            getSession().getTransactionMutex().setActiveThread(Thread.currentThread());
        }
        // avoiding adding more listeners while processing a listener.
        if (getTransactionController().isSequencingCallbackRequired()) {
            getTransactionController().currentlyProcessedListeners.put(getTransactionKey(), this);
        }
        // Send the SQL to the DB
        uow.issueSQLbeforeCompletion();
        // Fix up our merge state in the unit of work and the session
        uow.setPendingMerge();
    } catch (RuntimeException exception) {
        // Log the exception if it has not already been logged, or is a non-EclipseLink exception
        if (!(exception instanceof EclipseLinkException && ((EclipseLinkException) exception).hasBeenLogged())) {
            uow.logThrowable(SessionLog.WARNING, SessionLog.TRANSACTION, exception);
        }
        // Handle the exception according to transaction manager requirements
        handleException(exception);
    } finally {
        if (getTransactionController().isSequencingCallbackRequired()) {
            getTransactionController().currentlyProcessedListeners.remove(getTransactionKey());
        }
        getSession().releaseJTSConnection();
        session.endOperationProfile(SessionProfiler.JtsBeforeCompletion);
    }
}

Example 35 with UnitOfWorkImpl

use of org.eclipse.persistence.internal.sessions.UnitOfWorkImpl in project eclipselink by eclipse-ee4j.

the class AbstractSynchronizationListener method afterCompletion.

/**
 * INTERNAL:
 * The method performs the logic that should be executed after the transaction
 * has been completed. The status passed in indicates whether the transaction
 * was committed or rolled back. This status flag may be different for different
 * implementations.
 * This method executes without a transaction context.
 *
 * @param status The status code of the transaction completion.
 */
public void afterCompletion(Object status) {
    UnitOfWorkImpl uow = getUnitOfWork();
    // it's a purely sequencing listener - call sequencing callback if the transaction has committed.
    if (uow == null) {
        if (getTransactionController().isSequencingCallbackRequired()) {
            if (getTransactionController().canMergeUnitOfWork_impl(status)) {
                callSequencingCallback();
            }
        }
    } else {
        try {
            // Log the fact that we got invoked
            getTransactionController().logTxStateTrace(uow, "TX_afterCompletion", status);
            // Cr#3452053
            this.session.startOperationProfile(SessionProfiler.JtsAfterCompletion);
            // The uow should still be active even in rollback case
            if (!uow.isActive()) {
                throw TransactionException.inactiveUnitOfWork(uow);
            }
            // Only do merge if txn was committed
            if (getTransactionController().canMergeUnitOfWork_impl(status)) {
                if (getTransactionController().isSequencingCallbackRequired()) {
                    callSequencingCallback();
                }
                if (uow.isMergePending()) {
                    // uow in PENDING_MERGE state, merge clones
                    uow.mergeClonesAfterCompletion();
                }
            } else {
                // call this method again because there may have been no beforeCompletion call
                // if case transaction is to be rolled back.
                getSession().releaseJTSConnection();
                uow.afterExternalTransactionRollback();
            }
            // Clean up by releasing the uow and client session
            if (uow.shouldResumeUnitOfWorkOnTransactionCompletion() && getTransactionController().canMergeUnitOfWork_impl(status)) {
                uow.synchronizeAndResume();
                uow.setSynchronized(false);
            } else {
                uow.release();
                // Release the session explicitly
                if (getSession().isClientSession() || (getSession().isSessionBroker() && ((SessionBroker) getSession()).isClientSessionBroker())) {
                    getSession().release();
                }
            }
        } catch (RuntimeException exception) {
            // Log the exception if it has not already been logged, or is a non-EclipseLink exception
            if (!(exception instanceof EclipseLinkException && ((EclipseLinkException) exception).hasBeenLogged())) {
                uow.logThrowable(SessionLog.WARNING, SessionLog.TRANSACTION, exception);
            }
            handleException(exception);
        } finally {
            getTransactionController().removeUnitOfWork(getTransactionKey());
            this.session.endOperationProfile(SessionProfiler.JtsAfterCompletion);
            setUnitOfWork(null);
            setSession(null);
        }
    }
    if (getTransactionController().isSequencingCallbackRequired()) {
        getTransactionController().removeSequencingListener(getTransactionKey());
        this.sequencingCallback = null;
        this.sequencingCallbackMap = null;
    }
    setTransaction(null);
    setTransactionKey(null);
}