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ReplicationInterceptor (JBossCache API) - JBoss 4.0.1 sp1 Cache API Documentation 英文版文档

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org.jboss.cache.interceptors
Class ReplicationInterceptor

java.lang.Object
  org.jboss.cache.interceptors.Interceptor
      org.jboss.cache.interceptors.ReplicationInterceptor

All Implemented Interfaces:

Replicatable

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public class ReplicationInterceptor

extends Interceptor

implements Replicatable

Takes care of replicating modifications to other nodes in a cluster. Also listens for prepare(), commit() and rollback() messages which are received 'side-ways' (see docs/design/Refactoring.txt).

Version:

$Id: ReplicationInterceptor.java,v 1.6.4.2 2004/12/14 08:19:20 starksm Exp $

Author:

Bela Ban

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Constructor Summary

ReplicationInterceptor()           Map>.

 

Method Summary
Object	invoke(org.jgroups.blocks.MethodCall m)
void	replicate(List method_calls)           Receives and applies a number of method calls
Object	replicate(org.jgroups.blocks.MethodCall method_call)           Received as result of replication sent from another node to this node
protected  void	runCommitPhase(GlobalTransaction gtx)           Asynchronously calls #commit(GlobalTransaction) in all members
protected  void	runPreparePhase(GlobalTransaction tx, org.jgroups.blocks.MethodCall prepare_method, org.jgroups.Address coordinator, List modifications, boolean async)           Calls #prepare(GlobalTransaction,List,org.jgroups.Address,boolean)) in all members except self.
protected  void	runRollbackPhase(GlobalTransaction gtx)           Asynchronously calls #rollback(GlobalTransaction) in all members
void	setCache(TreeCache cache)

 

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

ReplicationInterceptor

public ReplicationInterceptor()

Map>. Mapping between local transactions and their modifications, populated on reception of PREPARE. Elements are removed on TX commit or rollback

Method Detail

setCache

public void setCache(TreeCache cache)

Overrides:

setCache in class Interceptor

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invoke

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

Overrides:

invoke in class Interceptor

Throws:

Throwable

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replicate

public Object replicate(org.jgroups.blocks.MethodCall method_call)
                 throws Throwable

Received as result of replication sent from another node to this node

Specified by:

replicate in interface Replicatable

Parameters:

method_call -

Returns:

Throws:

Throwable

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replicate

public void replicate(List method_calls)
               throws Throwable

Description copied from interface: Replicatable

Receives and applies a number of method calls

Specified by:

replicate in interface Replicatable

Parameters:

method_calls - List

Throws:

Throwable

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runPreparePhase

protected void runPreparePhase(GlobalTransaction tx,
                               org.jgroups.blocks.MethodCall prepare_method,
                               org.jgroups.Address coordinator,
                               List modifications,
                               boolean async)
                        throws Exception

Calls #prepare(GlobalTransaction,List,org.jgroups.Address,boolean)) in all members except self. Waits for all responses. If one of the members failed to prepare, its return value will be an exception. If there is one exception we rethrow it. This will mark the current transaction as rolled back, which will cause the #afterCompletion(int) callback to have a status of MARKED_ROLLBACK. When we get that call, we simply roll back the transaction.
If everything runs okay, the #afterCompletion(int) callback will trigger the #runCommitPhase(GlobalTransaction)).

Parameters:

tx -

coordinator -

prepare_method - The MethodCall representing the prepare() method

async - Run this asynchronously

Throws:

Exception

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runCommitPhase

protected void runCommitPhase(GlobalTransaction gtx)

Asynchronously calls #commit(GlobalTransaction) in all members

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runRollbackPhase

protected void runRollbackPhase(GlobalTransaction gtx)

Asynchronously calls #rollback(GlobalTransaction) in all members

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