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JBoss API: Class MethodOnlyEJBLock

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org.jboss.ejb.plugins.lock
Class MethodOnlyEJBLock

java.lang.Object
  |
  +--org.jboss.ejb.plugins.lock.BeanLockSupport
        |
        +--org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock
              |
              +--org.jboss.ejb.plugins.lock.MethodOnlyEJBLock

All Implemented Interfaces:: BeanLock

public class MethodOnlyEJBLock
extends QueuedPessimisticEJBLock

This class does not perform any pessimistic transactional locking. Only locking on single-threaded non-reentrant beans. Holds all locks for entity beans, not used for stateful.

All BeanLocks have a reference count. When the reference count goes to 0, the lock is released from the id -> lock mapping.

Version:

$Revision: 1.1.4.2 $

Revisions:

2001/08/08: billb

Initial revision

Author:

Bill Burke

Fields inherited from class org.jboss.ejb.plugins.lock.BeanLockSupport

id, numMethodLocks, reentrant, refs, synched, tx, txTimeout, waiting

Constructor Summary

MethodOnlyEJBLock()


Method Summary

void endTransaction(javax.transaction.Transaction transaction)


void schedule(MethodInvocation mi)
          Schedule(MethodInvocation) Schedule implements a particular policy for scheduling the threads coming in.

void wontSynchronize(javax.transaction.Transaction trasaction)


Methods inherited from class org.jboss.ejb.plugins.lock.QueuedPessimisticEJBLock

attemptMethodLock, doSchedule, getTxLock, isTxExpired, nextTransaction, releaseMethodLock, removeRef, waitForTx

Methods inherited from class org.jboss.ejb.plugins.lock.BeanLockSupport

addMethodLock, addRef, deadlockDetection, getId, getNumMethodLocks, getRefs, getTransaction, isCallAllowed, isMethodLocked, releaseSync, setId, setReentrant, setTimeout, setTransaction, sync

Methods inherited from class java.lang.Object

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

Constructor Detail

MethodOnlyEJBLock

public MethodOnlyEJBLock()

Method Detail

schedule

public void schedule(MethodInvocation mi)
              throws java.lang.Exception

Schedule(MethodInvocation) Schedule implements a particular policy for scheduling the threads coming in. There is always the spec required "serialization" but we can add custom scheduling in here Synchronizing on lock: a failure to get scheduled must result in a wait() call and a release of the lock. Schedulation must return with lock.

Overrides:: schedule in class QueuedPessimisticEJBLock

endTransaction

public void endTransaction(javax.transaction.Transaction transaction)

Overrides:: endTransaction in class QueuedPessimisticEJBLock

wontSynchronize

public void wontSynchronize(javax.transaction.Transaction trasaction)

Overrides:: wontSynchronize in class QueuedPessimisticEJBLock