org.dspace.app.xmlui.aspect.general
Class IfModifiedSinceSelector

java.lang.Object
  org.dspace.app.xmlui.aspect.general.IfModifiedSinceSelector

All Implemented Interfaces:

org.apache.cocoon.selection.Selector

public class IfModifiedSinceSelector
extends Object
implements org.apache.cocoon.selection.Selector

This simple selector looks for the If-Modified-Since header, and returns true if the Item in the request has not been modified since that date. The expression is ignored since the test is inherent in the request. Typical sitemap usage:

Author:

Larry Stone

Field Summary

Fields inherited from interface org.apache.cocoon.selection.Selector

ROLE

Constructor Summary

IfModifiedSinceSelector()

Method Summary

boolean

select(String expression, Map objectModel, org.apache.avalon.framework.parameters.Parameters parameters) Check for If-Modified-Since header on request, and returns true if the Item should *not* be sent, i.e.

Methods inherited from class java.lang.Object

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

Constructor Detail

IfModifiedSinceSelector

public IfModifiedSinceSelector()

Method Detail

select

public boolean select(String expression,
                      Map objectModel,
                      org.apache.avalon.framework.parameters.Parameters parameters)

Check for If-Modified-Since header on request, and returns true if the Item should *not* be sent, i.e. if the response status should be 304 (HttpServletResponse.SC_NOT_MODIFIED).

Specified by:

select in interface org.apache.cocoon.selection.Selector

Parameters:

expression - is ignored

objectModel - environment passed through via cocoon

Returns:

null or map containing value of sitemap parameter 'pattern'