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

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

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            // Initialize beanPOA and create metadata depending on the kind of bean
            if (component instanceof EntityBeanComponent) {

                // This is an entity bean (lifespan: persistent)
                beanServantRegistry = poaRegistry.getValue().getRegistryWithPersistentPOAPerServant();
                final EntityBeanComponent entityBeanComponent = (EntityBeanComponent) component;
                final Class pkClass = entityBeanComponent.getPrimaryKeyClass();
                ejbMetaData = new EJBMetaDataImplIIOP(entityBeanComponent.getRemoteClass(), entityBeanComponent.getHomeClass(), pkClass, false, false, homeHandle);
            } else {
                // This is a session bean (lifespan: transient)
                beanServantRegistry = poaRegistry.getValue().getRegistryWithTransientPOAPerServant();
                if (component instanceof StatelessSessionComponent) {
                    // Stateless session bean
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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.associate(pk);
        return instance;
    }
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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.associate(pk);
        return instance;
    }
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                if (!(component instanceof EntityBeanComponent)) {
                    throw MESSAGES.unexpectedComponent(component, EntityBeanComponent.class);
                }
                final EntityBeanComponent entityBeanComponent = (EntityBeanComponent) component;
                //grab an unasociated entity bean from the pool
                final EntityBeanComponentInstance instance = entityBeanComponent.acquireUnAssociatedInstance();

                //call the ejbCreate method
                final Object primaryKey = invokeEjbCreate(context, ejbCreate, instance, params);
                instance.associate(primaryKey);
                primaryKeyReference.set(primaryKey);

                //now add the instance to the cache, so it is usable
                //note that we do not release it back to the pool
                //the cache will do that when it is expired or removed
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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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    private EntityBeanRemoveInterceptor() {
    }

    @Override
    public Object processInvocation(final InterceptorContext context) throws Exception {
        final EntityBeanComponentInstance instance = (EntityBeanComponentInstance) context.getPrivateData(ComponentInstance.class);
        try {
            return context.proceed();
        } finally {
            instance.setRemoved(true);
            instance.removeAllTimers();
        }
    }
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    private final OwnableReentrantLock lock = new OwnableReentrantLock();

    @Override
    public Object processInvocation(InterceptorContext context) throws Exception {
        final EntityBeanComponent component = getComponent(context, EntityBeanComponent.class);
        final EntityBeanComponentInstance instance = (EntityBeanComponentInstance) context.getPrivateData(ComponentInstance.class);

        //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 MESSAGES.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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            this.componentView = componentView;
        }

        @Override
        public Object processInvocation(final InterceptorContext context) throws Exception {
            final EntityBeanComponentInstance instance = (EntityBeanComponentInstance) context.getPrivateData(ComponentInstance.class);
            try {
                final Object primaryKey = context.getPrivateData(EntityBeanComponent.PRIMARY_KEY_CONTEXT_KEY);
                final Object other = context.getParameters()[0];
                if (!componentView.getViewClass().isAssignableFrom(other.getClass())) {
                    return false;
                }
                if (context.getMethod().getParameterTypes()[0].equals(EJBLocalObject.class)) {
                    return ((EJBLocalObject) other).getPrimaryKey().equals(primaryKey);
                } else {
                    return ((EJBObject) other).getPrimaryKey().equals(primaryKey);
                }
            } finally {
                instance.getComponent().getCache().release(instance, true);
            }
        }
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