org.apache.lenya.cms.cocoon.acting
Class ResourceExistsAction

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.cocoon.acting.AbstractAction
          org.apache.cocoon.acting.ServiceableAction
              org.apache.lenya.cms.cocoon.acting.ResourceExistsAction

All Implemented Interfaces:

org.apache.avalon.framework.component.Component, org.apache.avalon.framework.logger.LogEnabled, org.apache.avalon.framework.service.Serviceable, org.apache.avalon.framework.thread.ThreadSafe, org.apache.cocoon.acting.Action

public class ResourceExistsAction
extends org.apache.cocoon.acting.ServiceableAction
implements org.apache.avalon.framework.thread.ThreadSafe

This action simply checks to see if a given resource exists. It checks whether the specified in the src attribute source exists or not. The action returns empty Map if it exists, null otherwise.

Instead of src attribute, source can be specified using parameter named 'url' (this is old syntax).

In order to differentiate between files and directories, the type can be specified using the parameter 'type' (<map:parameter name="type" value="file"/> or <map:parameter name="type" value="directory"/>). The parameter 'type' is optional.

Note: org.apache.cocoon.selection.ResourceExistsSelector should be preferred to this component, as the semantics of a Selector better match the supplied functionality.

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

ResourceExistsAction()

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 source, org.apache.avalon.framework.parameters.Parameters parameters)

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

ResourceExistsAction

public ResourceExistsAction()

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 source,
                         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