EntityInstanceInterceptor

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org.jboss.ejb.plugins
Class EntityInstanceInterceptor

java.lang.Object
  org.jboss.ejb.plugins.AbstractInterceptor (src) 
      org.jboss.ejb.plugins.EntityInstanceInterceptor

All Implemented Interfaces:: AllowedOperationsFlags (src) , ContainerPlugin (src) , Interceptor (src) , Service (src)

public class EntityInstanceInterceptor
extends AbstractInterceptor (src)

The instance interceptors role is to acquire a context representing the target object from the cache.

This particular container interceptor implements pessimistic locking on the transaction that is associated with the retrieved instance. If there is a transaction associated with the target component and it is different from the transaction associated with the Invocation coming in then the policy is to wait for transactional commit.

We also implement serialization of calls in here (this is a spec requirement). This is a fine grained notify, notifyAll mechanism. We notify on ctx serialization locks and notifyAll on global transactional locks.

WARNING: critical code, get approval from senior developers before changing.

Field Summary
`protected EntityContainer (src)`	`container`
`protected static java.lang.reflect.Method`	`ejbTimeout` A reference to `TimedObject.ejbTimeout(javax.ejb.Timer)`.

Fields inherited from class org.jboss.ejb.plugins.AbstractInterceptor (src)

log, nextInterceptor

Fields inherited from interface org.jboss.ejb.AllowedOperationsFlags (src)

IN_AFTER_BEGIN, IN_AFTER_COMPLETION, IN_BEFORE_COMPLETION, IN_BUSINESS_METHOD, IN_EJB_ACTIVATE, IN_EJB_CREATE, IN_EJB_FIND, IN_EJB_HOME, IN_EJB_LOAD, IN_EJB_PASSIVATE, IN_EJB_POST_CREATE, IN_EJB_REMOVE, IN_EJB_STORE, IN_EJB_TIMEOUT, IN_INTERCEPTOR_METHOD, IN_SERVICE_ENDPOINT_METHOD, IN_SET_ENTITY_CONTEXT, IN_SET_MESSAGE_DRIVEN_CONTEXT, IN_SET_SESSION_CONTEXT, IN_UNSET_ENTITY_CONTEXT, NOT_ALLOWED

Constructor Summary
`EntityInstanceInterceptor()`

Method Summary
`Container (src)`	`getContainer()`
`java.lang.Object`	`invoke(Invocation (src) mi)` ???
`java.lang.Object`	`invokeHome(Invocation (src) mi)` ???
`void`	`setContainer(Container (src) container)` This callback is set by the container so that the plugin may access it

Methods inherited from class org.jboss.ejb.plugins.AbstractInterceptor (src)

create, destroy, getNext, setNext, start, stop

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

container

protected EntityContainer (src)  container

ejbTimeout

protected static final java.lang.reflect.Method ejbTimeout

A reference to TimedObject.ejbTimeout(javax.ejb.Timer).

Constructor Detail