de.neteye.actioncache
Class ActionCache

java.lang.Object
  |
  +--de.neteye.actioncache.AbstractCache
        |
        +--de.neteye.actioncache.ActionCache

All Implemented Interfaces:

java.io.Serializable

public final class ActionCache

extends AbstractCache

Cache implementation using ActionCacheItem objects

Version:

$Revision: 1.3 $

Author:

Felix Gnass

See Also:

Serialized Form

Field Summary

static java.lang.String

RESPONSE_WRAPPER The request attribute under which the ResponseWrapper is stored

Method Summary

CacheItem	createCacheItem(java.lang.Object key)
ActionCacheItem	getActionCacheItem(java.lang.Object key)
java.io.File	getCacheDir()
static ActionCache	newInstance(int capacity, java.io.File cacheDir)
void	persist()
javax.servlet.http.HttpServletResponse	wrapResponse(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response, org.apache.struts.action.Action action, org.apache.struts.action.ActionForm form, org.apache.struts.action.ActionMapping mapping) Wraps the response into an ActionCacheResponseWrapper if it needs to be cached.

Methods inherited from class de.neteye.actioncache.AbstractCache

getItem, setCapacity

Methods inherited from class java.lang.Object

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

Field Detail

RESPONSE_WRAPPER

public static final java.lang.String RESPONSE_WRAPPER

The request attribute under which the ResponseWrapper is stored

See Also:

Constant Field Values

Method Detail

getCacheDir

public java.io.File getCacheDir()

createCacheItem

public CacheItem createCacheItem(java.lang.Object key)
                          throws java.io.IOException

Specified by:

createCacheItem in class AbstractCache

java.io.IOException

getActionCacheItem

public ActionCacheItem getActionCacheItem(java.lang.Object key)

newInstance

public static ActionCache newInstance(int capacity,
                                      java.io.File cacheDir)
                               throws java.lang.InstantiationException

java.lang.InstantiationException

persist

public void persist()

wrapResponse

public javax.servlet.http.HttpServletResponse wrapResponse(javax.servlet.http.HttpServletRequest request,
                                                           javax.servlet.http.HttpServletResponse response,
                                                           org.apache.struts.action.Action action,
                                                           org.apache.struts.action.ActionForm form,
                                                           org.apache.struts.action.ActionMapping mapping)
                                                    throws java.lang.Exception

Wraps the response into an ActionCacheResponseWrapper if it needs to be cached. If theres a valid cache item for the cache key, the cached content is written to the response and null is returned. If the action does not implement CacheableAction, the original response is returned. This method was formerly part of the RequestProcessor(s) and has been moved here to avoid duplicate code. Hopefully in an upcoming struts release that supports RequestProcessor chaining, the code can be moved back to the RequestProcessor where it belongs.

java.lang.Exception

Since:

1.1.2