org.jboss.cache.interceptors
Class OptimisticValidatorInterceptor

java.lang.Object
  |
  +--org.jboss.cache.interceptors.Interceptor
        |
        +--org.jboss.cache.interceptors.OptimisticInterceptor
              |
              +--org.jboss.cache.interceptors.OptimisticValidatorInterceptor

public class OptimisticValidatorInterceptor

extends OptimisticInterceptor

Validates the data in the transaction workspace against data in the actual cache (versions only), and then performs commits if necessary. Does not pass on prepare/commit/rollbacks to the other interceptors.

Currently uses simplistic integer based versioning and validation. Plans are to have this configurable as there will always be a performance/complexity tradeoff.

On the commit it applies the changes in the workspace to the real nodes in the cache.

On rollback clears the nodes in the workspace.

Author:

Manik Surtani (manik@jboss.org), Steve Woodcock (stevew@jofti.com)

Field Summary

Fields inherited from class org.jboss.cache.interceptors.OptimisticInterceptor

txManager, txTable

Constructor Summary

OptimisticValidatorInterceptor()

Method Summary

java.lang.Object	invoke(org.jgroups.blocks.MethodCall m)
void	setCache(TreeCache cache) Set of GlobalTransactions that originated somewhere else (we didn't create them).

Methods inherited from class org.jboss.cache.interceptors.OptimisticInterceptor

getCurrentTxFromThread, getTransactionWorkspace

Methods inherited from class org.jboss.cache.interceptors.Interceptor

getNext, setNext

Methods inherited from class java.lang.Object

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

Constructor Detail

OptimisticValidatorInterceptor

public OptimisticValidatorInterceptor()

Method Detail

setCache

public void setCache(TreeCache cache)

Set of GlobalTransactions that originated somewhere else (we didn't create them). This is a result of a PREPARE phase. GlobalTransactions in this list should be ignored by this interceptor when registering for TX completion

Overrides:

setCache in class OptimisticInterceptor

invoke

public java.lang.Object invoke(org.jgroups.blocks.MethodCall m)
                        throws java.lang.Throwable

Overrides:

invoke in class Interceptor

java.lang.Throwable