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org.apache.cocoon.acting
Class CacheEventAction

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.cocoon.acting.AbstractAction
          org.apache.cocoon.acting.ServiceableAction
              org.apache.cocoon.acting.CacheEventAction

All Implemented Interfaces:

Component, LogEnabled, Serviceable, ThreadSafe, Action

public class CacheEventAction
extends ServiceableAction
implements ThreadSafe

Simple action to cause notification of a NamedEvent to an EventAwareCacheImpl. The event name is taken from a sitemap parameter named "event". This action returns null (fails) if the configured event is null or the empty string. Otherwise, it succeeds and returns an empty Map. This is used in the Event based cache example.

Version:

CVS $Id: CacheEventAction.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Author:

Geoff Howard (ghoward@apache.org)

Field Summary

Fields inherited from class org.apache.cocoon.acting.ServiceableAction

manager

Fields inherited from class org.apache.cocoon.acting.AbstractAction

EMPTY_MAP

Fields inherited from interface org.apache.cocoon.acting.Action

ROLE

Constructor Summary

CacheEventAction()

Method Summary

Map	act(Redirector redirector, SourceResolver resolver, Map objectModel, String src, Parameters par) Lookup the cache and call its processEvent method.

Methods inherited from class org.apache.cocoon.acting.ServiceableAction

service

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

enableLogging, getLogger, setupLogger, setupLogger, setupLogger

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheEventAction

public CacheEventAction()

Method Detail

act

public Map act(Redirector redirector,
               SourceResolver resolver,
               Map objectModel,
               String src,
               Parameters par)
        throws Exception

Lookup the cache and call its processEvent method. Returns an empty map to signal success.

Specified by:

act in interface Action

resolver - The SourceResolver in charge

objectModel - The Map with object of the calling environment which can be used to select values this controller may need (ie Request, Response).

src - A source String to the Action

par - The Parameters for this invocation

Returns:

Map The returned Map object with sitemap substitution values which can be used in subsequent elements attributes like src= using a xpath like expression: src="mydir/{myval}/foo" If the return value is null the processing inside the element of the sitemap will be skipped.

Throws:

Exception - Indicates something is totally wrong