org.jboss.ejb.plugins
Class EntityLockInterceptor

java.lang.Object
  |
  +--org.jboss.ejb.plugins.AbstractInterceptor
        |
        +--org.jboss.ejb.plugins.EntityLockInterceptor

All Implemented Interfaces:

ContainerPlugin, Interceptor, Service

public class EntityLockInterceptor

extends AbstractInterceptor

The lock interceptors role is to schedule thread wanting to invoke method on a target bean

The policies for implementing scheduling (pessimistic locking etc) is implemented by pluggable locks

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.

Version:

$Revision: 1.5.4.4 $

Revisions:

2001/07/30: marcf

1. Initial revision
2. Factorization of the lock out of the context in cache
3. The new locking is implement as "scheduling" in the lock which allows for pluggable locks

2001/08/07: billb

1. Removed while loop and moved it to SimplePessimisticEJBLock where it belongs.

Author:

Marc Fleury, Bill Burke

Field Summary

protected EntityContainer

container

Fields inherited from class org.jboss.ejb.plugins.AbstractInterceptor

log, nextInterceptor

Constructor Summary

EntityLockInterceptor()

Method Summary

Container	getContainer()
java.lang.Object	invoke(MethodInvocation mi)
java.lang.Object	invokeHome(MethodInvocation mi)
void	setContainer(Container container) This callback is set by the container so that the plugin may access it

Methods inherited from class org.jboss.ejb.plugins.AbstractInterceptor

destroy, getNext, init, 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 container

Constructor Detail

EntityLockInterceptor

public EntityLockInterceptor()

Method Detail

setContainer

public void setContainer(Container container)

Description copied from interface: ContainerPlugin

This callback is set by the container so that the plugin may access it

Overrides:

setContainer in class AbstractInterceptor

Following copied from interface: org.jboss.ejb.ContainerPlugin

Parameters:

con - the container using this plugin

getContainer

public Container getContainer()

Overrides:

getContainer in class AbstractInterceptor

invokeHome

public java.lang.Object invokeHome(MethodInvocation mi)
                            throws java.lang.Exception

Overrides:

invokeHome in class AbstractInterceptor

invoke

public java.lang.Object invoke(MethodInvocation mi)
                        throws java.lang.Exception

Overrides:

invoke in class AbstractInterceptor