org.w3c.jigsaw.filters
Class NoCacheFilter

java.lang.Object
  org.w3c.tools.resources.AttributeHolder
      org.w3c.tools.resources.Resource
          org.w3c.tools.resources.FramedResource
              org.w3c.tools.resources.ResourceFrame
                  org.w3c.tools.resources.ResourceFilter
                      org.w3c.jigsaw.filters.NoCacheFilter

All Implemented Interfaces:

java.lang.Cloneable, java.util.EventListener, AttributeChangedListener, FrameEventListener, FilterInterface

public class NoCacheFilter
extends ResourceFilter

Transform a Pragma: no-cache into a Cache-Control: max-age=0 It is just here to fix some client brokenness.

Field Summary

Fields inherited from class org.w3c.tools.resources.ResourceFrame

filterClass, frameListener, resource

Fields inherited from class org.w3c.tools.resources.FramedResource

ATTR_OID, attrListener, debugEvent, event_disabled, framesRef, structListener

Fields inherited from class org.w3c.tools.resources.Resource

ATTR_CONTEXT, ATTR_HELP_URL, ATTR_IDENTIFIER, ATTR_LAST_MODIFIED, ATTR_PARENT, ATTR_RESOURCE_FRAMES, ATTR_STORE_ENTRY, ATTR_URL, co, id

Fields inherited from class org.w3c.tools.resources.AttributeHolder

attributes, values

Constructor Summary

NoCacheFilter()

Method Summary

ReplyInterface	ingoingFilter(RequestInterface request) Modify the request to transform a Pragma: no-cache into a Cache-Control: max-age=0
ReplyInterface	outgoingFilter(RequestInterface req, ReplyInterface rep) The outgoing filter decorates the reply appropriately.

Methods inherited from class org.w3c.tools.resources.ResourceFilter

exceptionFilter, getTargetResource, ingoingFilter, initialize, lookup, outgoingFilter, outputFilter, pickleValues

Methods inherited from class org.w3c.tools.resources.ResourceFrame

addFrameEventListener, attributeChanged, checkRequest, eventDisabled, fireFrameEvent, frameModified, getFilters, getFilters, getFrameReference, getResource, getResourceReference, getSpaceEntry, getURLPath, lookupFilters, lookupFrames, perform, postFrameEvent, processEvent, registerResource, removeFrameEventListener, setValue, unregisterResource, updateDefaultChildAttributes

Methods inherited from class org.w3c.tools.resources.FramedResource

addAttributeChangedListener, addStructureChangedListener, collectFramesReference, delete, disableEvent, displayEvent, enableEvent, fireAttributeChangeEvent, fireStructureChangedEvent, fireStructureChangedEvent, frameAdded, frameRemoved, getClone, getFrame, getFrame, getFrameReference, getFrameReference, getFramesReference, getOid, initialize, markModified, notifyUnload, performFrames, postAttributeChangeEvent, postEvent, postStructureChangedEvent, postStructureChangedEvent, registerFrame, registerFrameIfNone, removeAttributeChangedListener, removeStructureChangedListener, setSilentValue, setSilentValue, unregisterFrame

Methods inherited from class org.w3c.tools.resources.Resource

acceptUnload, checkMultipleLock, collectFrames, getContext, getFrame, getFrames, getHelpURL, getHelpURL, getIdentifier, getLastModified, getParent, getServer, getSpace, getStoreEntry, getValue, getValue, isInitialized, isUnloaded, setContext, setContext, setValue, unsafeGetContext, unsafeGetFrame, unsafeGetFrames, unsafeGetIdentifier, unsafeGetResourceReference, unsafeGetURLPath, unsafeGetValue, updateAttributes

Methods inherited from class org.w3c.tools.resources.AttributeHolder

definesAttribute, definesAttribute, getAttributes, getBoolean, getChar, getClone, getClone, getDouble, getFloat, getInt, getLong, getString, getValue, lookupAttribute, print, setBoolean, setChar, setDouble, setFloat, setInt, setLong, setString, setValue, unsafeDefinesAttribute, unsafeGetDouble, unsafeGetString

Methods inherited from class java.lang.Object

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

Constructor Detail

NoCacheFilter

public NoCacheFilter()

Method Detail

ingoingFilter

public ReplyInterface ingoingFilter(RequestInterface request)
                             throws ProtocolException

Modify the request to transform a Pragma: no-cache into a Cache-Control: max-age=0

Overrides:

ingoingFilter in class ResourceFilter

Parameters:

request - The request to filter.

Returns:

A Reply instance, if the filter did know how to answer the request without further processing, null otherwise.

Throws:

ProtocolException - If processing should be interrupted, because an abnormal situation occured.

outgoingFilter

public ReplyInterface outgoingFilter(RequestInterface req,
                                     ReplyInterface rep)
                              throws ProtocolException

The outgoing filter decorates the reply appropriately.

Overrides:

outgoingFilter in class ResourceFilter

Parameters:

request - The original request.

reply - The originial reply.

Returns:

Always null.

Throws:

ProtocolException - If processing should be interrupted, because an abnormal situation occured.