org.sapia.cocoon.acting
Class HttpResponseHeaderAction

java.lang.Object
  org.sapia.cocoon.acting.HttpResponseHeaderAction

All Implemented Interfaces:

org.apache.cocoon.acting.Action

public class HttpResponseHeaderAction
extends java.lang.Object
implements org.apache.cocoon.acting.Action

This action is inspired by a snippet on the Cocoon wiki.

One can use this action to set the response headers that will trigger caching on the browser-side. This allows static or seldomly changing content to be shielded from unnecessary requests from browsers. This greatly improves Cocoon scalability (and user-perceived performance).

This action takes either one of the following sitemap configuration parameters:

• cache-validity-seconds: the number of seconds that the browser should keep the resource for in its cache (defaults to 0).
• cache-validity-minutes: the number of minutes that the browser should keep the resource for in its cache (defaults to 0).

Example Spring configuration:

Example Sitemap configuration:

Author:

yduchesne

Field Summary

static java.lang.String	PARAM_CACHE_VALIDITY_MINUTES
static java.lang.String	PARAM_CACHE_VALIDITY_SECONDS

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

ROLE

Constructor Summary

HttpResponseHeaderAction()

Method Summary

java.util.Map

act(org.apache.cocoon.environment.Redirector redirector, org.apache.cocoon.environment.SourceResolver resolver, java.util.Map objectModel, java.lang.String src, org.apache.avalon.framework.parameters.Parameters parameters)

Methods inherited from class java.lang.Object

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

Field Detail

PARAM_CACHE_VALIDITY_SECONDS

public static final java.lang.String PARAM_CACHE_VALIDITY_SECONDS

See Also:

Constant Field Values

PARAM_CACHE_VALIDITY_MINUTES

public static final java.lang.String PARAM_CACHE_VALIDITY_MINUTES

See Also:

Constant Field Values

Constructor Detail

HttpResponseHeaderAction

public HttpResponseHeaderAction()

Method Detail

act

public java.util.Map act(org.apache.cocoon.environment.Redirector redirector,
                         org.apache.cocoon.environment.SourceResolver resolver,
                         java.util.Map objectModel,
                         java.lang.String src,
                         org.apache.avalon.framework.parameters.Parameters parameters)
                  throws java.lang.Exception

Specified by:

act in interface org.apache.cocoon.acting.Action

Throws:

java.lang.Exception