Package org.jboss.as.ejb3.component.entity

Examples of org.jboss.as.ejb3.component.entity.EntityBeanComponentInstance

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    public Interceptor create(final InterceptorFactoryContext context) {
        return new AbstractEJBInterceptor() {
            public Object processInvocation(final InterceptorContext context) throws Exception {
                final EntityBeanComponent component = getComponent(context, EntityBeanComponent.class);
                final EntityBeanComponentInstance instance = component.getCache().get(context.getParameters()[0]);
                final Method oldMethod = context.getMethod();
                final Object[] oldParams = context.getParameters();
                try {
                    context.putPrivateData(ComponentInstance.class, instance);
                    context.setMethod(ejbRemove);
                    context.setParameters(EMPTY);
                    context.setTarget(instance.getInstance());
                    instance.getInterceptor(ejbRemove).processInvocation(context);
                } finally {
                    context.setMethod(oldMethod);
                    context.setParameters(oldParams);
                    context.setTarget(null);
                    context.putPrivateData(ComponentInstance.class, null);
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    public EntityBeanComponentInstance get(final Object key) throws NoSuchEJBException {
        if (!isTransactionActive()) {
            return createInstance(key);
        }
        final Map<Object, EntityBeanComponentInstance> map = prepareCache();
        EntityBeanComponentInstance instance = map.get(key);
        if (instance == null) {
            instance = createInstance(key);
            map.put(key, instance);
        }
        return instance;
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        });
        return map;
    }

    private EntityBeanComponentInstance createInstance(Object pk) {
        final EntityBeanComponentInstance instance = component.getPool().get();
        instance.associate(pk);
        return instance;
    }
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        return new Interceptor() {
            @Override
            public Object processInvocation(final InterceptorContext context) throws Exception {

                //grab a bean from the pool to invoke the finder method on
                final EntityBeanComponentInstance instance = component.acquireUnAssociatedInstance();
                final Object result;
                final InvocationType invocationType = context.getPrivateData(InvocationType.class);
                try {
                    context.putPrivateData(InvocationType.class, InvocationType.FINDER_METHOD);
                    result = invokeFind(context, instance);
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*/
public class EntityBeanSynchronizationInterceptor extends AbstractEJBInterceptor {
    @Override
    public Object processInvocation(InterceptorContext context) throws Exception {
        final EntityBeanComponent component = getComponent(context, EntityBeanComponent.class);
        final EntityBeanComponentInstance instance = (EntityBeanComponentInstance) context.getPrivateData(ComponentInstance.class);
        final OwnableReentrantLock lock = instance.getLock();
        //we do not synchronize for instances that are not associated with an identity
        if (instance.getPrimaryKey() == null) {
            return context.proceed();
        }

        final TransactionSynchronizationRegistry transactionSynchronizationRegistry = component.getTransactionSynchronizationRegistry();
        if (ROOT_LOGGER.isTraceEnabled()) {
            ROOT_LOGGER.trace("Trying to acquire lock: " + lock + " for entity bean " + instance + " during invocation: " + context);
        }
        // we obtain a lock in this synchronization interceptor because the lock needs to be tied to the synchronization
        // so that it can released on the tx synchronization callbacks
        final Object lockOwner = getLockOwner(transactionSynchronizationRegistry);
        lock.pushOwner(lockOwner);
        try {
            lock.lock();
            boolean syncRegistered = false;
            synchronized (lock) {

                //if the previous transaction was rolled back we re-load the entity bean state in the current TX
                if(instance.isReloadRequired()) {
                    instance.reload();
                }

                if (ROOT_LOGGER.isTraceEnabled()) {
                    ROOT_LOGGER.trace("Acquired lock: " + lock + " for entity bean instance: " + instance + " during invocation: " + context);
                }

                if (context.getPrivateData(InternalInvocationMarker.class) == null) {
                    if (instance.isRemoved() || instance.isDiscarded()) {
                        final Object primaryKey = context.getPrivateData(EntityBeanComponent.PRIMARY_KEY_CONTEXT_KEY);
                        component.getCache().release(instance, true);
                        lock.unlock();
                        throw EjbLogger.ROOT_LOGGER.instanceWasRemoved(component.getComponentName(), primaryKey);
                    }
                }

                Object currentTransactionKey = null;
                try {
                    // get the key to current transaction associated with this thread
                    currentTransactionKey = transactionSynchronizationRegistry.getTransactionKey();
                    if (!instance.isSynchronizeRegistered()) {
                        // if this entity instance is already associated with a different transaction, then it's an error

                        // if the thread is currently associated with a tx, then register a tx synchronization
                        if (currentTransactionKey != null) {
                            // register a tx synchronization for this entity instance
                            final Synchronization entitySynchronization = new EntityBeanSynchronization(instance, lockOwner);
                            transactionSynchronizationRegistry.registerInterposedSynchronization(entitySynchronization);
                            syncRegistered = true;
                            if (ROOT_LOGGER.isTraceEnabled()) {
                                ROOT_LOGGER.trace("Registered tx synchronization: " + entitySynchronization + " for tx: " + currentTransactionKey +
                                        " associated with stateful component instance: " + instance);
                            }
                        }
                        instance.setSynchronizationRegistered(true);
                    }
                    // proceed with the invocation
                    return context.proceed();

                } finally {
                    // if the current call did *not* register a tx SessionSynchronization, then we have to explicitly mark the
                    // entity instance as "no longer in use". If it registered a tx EntityBeanSynchronization, then releasing the lock is
                    // taken care off by a tx synchronization callbacks.
                    //if is important to note that we increase the lock count on every invocation
                    //which means we need to release it on every invocation except for the one where we actually registered the TX synchronization
                    if (currentTransactionKey == null) {
                        instance.store();
                        releaseInstance(instance, true);
                    } else if (!syncRegistered) {
                        component.getCache().release(instance, true);
                        lock.unlock();
                    }
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        return false;
    }

    public synchronized EntityBeanComponentInstance get(final Object key) throws NoSuchEntityException {
        if (!cache.containsKey(key)) {
            final EntityBeanComponentInstance instance = createInstance(key);
            realCreate(instance);
        }
        final CacheEntry cacheEntry = cache.get(key);
        cacheEntry.referenceCount.incrementAndGet();
        if (cacheEntry.replacedInstance != null) {
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    public void stop() {
    }

    private EntityBeanComponentInstance createInstance(final Object pk) {
        final EntityBeanComponentInstance instance = component.acquireUnAssociatedInstance();
        instance.activate(pk);
        return instance;
    }
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public class EntityBeanReentrancyInterceptor implements Interceptor{


    @Override
    public Object processInvocation(final InterceptorContext context) throws Exception {
        EntityBeanComponentInstance instance = (EntityBeanComponentInstance) context.getPrivateData(ComponentInstance.class);
        if(instance.isInvocationInProgress()) {
            throw EjbLogger.ROOT_LOGGER.failToReacquireLockForNonReentrant(context.getPrivateData(ComponentInstance.class));
        }
        instance.setInvocationInProgress(true);
        try {
            return context.proceed();
        } finally {
            instance.setInvocationInProgress(false);
        }
    }
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            return createInstance(key);
        }

        final Map<Object, CacheEntry> cache = prepareCache();
        if (!cache.containsKey(key)) {
            final EntityBeanComponentInstance instance = createInstance(key);
            realCreate(instance, false);
        }
        final CacheEntry cacheEntry = cache.get(key);
        cacheEntry.referenceCount.incrementAndGet();
        return cacheEntry.instance;
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        });
        return map;
    }

    private EntityBeanComponentInstance createInstance(Object pk) {
        final EntityBeanComponentInstance instance = component.acquireUnAssociatedInstance();
        instance.activate(pk);
        return instance;
    }
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