Examples of oracle.toplink.essentials.internal.descriptors.OptimisticLockingPolicy

Package oracle.toplink.essentials.internal.descriptors

Examples of oracle.toplink.essentials.internal.descriptors.OptimisticLockingPolicy

oracle.toplink.essentials.internal.descriptors.OptimisticLockingPolicy

    public void prepareUpdateAll() {
        ExpressionBuilder builder = ((UpdateAllQuery)getQuery()).getExpressionBuilder();        
        HashMap updateClauses = ((UpdateAllQuery)getQuery()).getUpdateClauses();
        
        // Add a statement to update the optimistic locking field if their is one.
        OptimisticLockingPolicy policy = getDescriptor().getOptimisticLockingPolicy();
        if (policy != null) {
            if(policy.getWriteLockField() != null) {
                Expression writeLock = builder.getField(policy.getWriteLockField());
                Expression writeLockUpdateExpression = policy.getWriteLockUpdateExpression(builder);
                if (writeLockUpdateExpression != null) {
                    // clone it to keep user's original data intact
                    updateClauses = (HashMap)updateClauses.clone();
                    updateClauses.put(writeLock, writeLockUpdateExpression);
                }

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                writeQuery.setModifyRow(getDescriptor().getObjectBuilder().buildRow(object, getSession()));
            }


            // Update the write lock field if required
            if (getDescriptor().usesOptimisticLocking()) {
                OptimisticLockingPolicy policy = getDescriptor().getOptimisticLockingPolicy();
                policy.addLockValuesToTranslationRow(writeQuery);


                // update the row with newer lock value    
                policy.updateRowAndObjectForUpdate(writeQuery, object);               
            }


            // PERF: Avoid events if no listeners.
            if (getDescriptor().getEventManager().hasAnyEventListeners()) {
                DescriptorEvent event = new DescriptorEvent(DescriptorEventManager.AboutToUpdateEvent, writeQuery);

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                writeQuery.setModifyRow(getDescriptor().getObjectBuilder().buildRow(object, getSession()));
            }


            // Update the write lock field if required
            if (getDescriptor().usesOptimisticLocking()) {
                OptimisticLockingPolicy policy = getDescriptor().getOptimisticLockingPolicy();
                policy.addLockValuesToTranslationRow(writeQuery);


                if (!getModifyRow().isEmpty() || (shouldModifyVersionField.booleanValue() && policy instanceof VersionLockingPolicy)) {
                    // update the row with newer lock value    
                    policy.updateRowAndObjectForUpdate(writeQuery, object);
                } else if (!shouldModifyVersionField.booleanValue() && policy instanceof VersionLockingPolicy) {
                    ((VersionLockingPolicy)policy).writeLockValueIntoRow(writeQuery, object);
                }
            }

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            // Add pk attribute to the fetch group attributes list
            attributes.add(pkMapping.getAttributeName());
        }


        //second, add version/optimistic locking object attributes into the fetch group if applied.
        OptimisticLockingPolicy lockingPolicy = getDescriptor().getOptimisticLockingPolicy();
        if (query.shouldMaintainCache() && (lockingPolicy != null)) {
            lockingPolicy.prepareFetchGroupForReadQuery(query.getFetchGroup(), query);
        }


        //thrid, prepare all fetch group attributes 
        Iterator attrIter = attributes.iterator();
        while (attrIter.hasNext()) {

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    public void lock(Object entity, LockModeType lockMode){
        try {
            verifyOpen();
            RepeatableWriteUnitOfWork context = getActivePersistenceContext(checkForTransaction(!isExtended()));
            ClassDescriptor descriptor = context.getDescriptor(entity);
            OptimisticLockingPolicy lockingPolicy = descriptor.getOptimisticLockingPolicy();
            if ((lockingPolicy == null) || !(lockingPolicy instanceof VersionLockingPolicy)){
                throw new PersistenceException(ExceptionLocalization.buildMessage("ejb30-wrong-lock_called_without_version_locking-index", null));
            }
            context.forceUpdateToVersionField(entity, (lockMode == LockModeType.WRITE));
        } catch (RuntimeException e) {

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Related Classes of oracle.toplink.essentials.internal.descriptors.OptimisticLockingPolicy

oracle.toplink.essentials.descriptors.FetchGroupManager

oracle.toplink.essentials.internal.ejb.cmp3.base.EntityManagerImpl

oracle.toplink.essentials.internal.queryframework.DatabaseQueryMechanism

oracle.toplink.essentials.internal.queryframework.ExpressionQueryMechanism

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