org.apache.cocoon.producer
Class AbstractProducer
java.lang.Object
|
+--org.apache.cocoon.framework.AbstractActor
|
+--org.apache.cocoon.producer.AbstractProducer
- All Implemented Interfaces:
- Actor, Changeable, Defaults, Producer
- Direct Known Subclasses:
- DummyProducer, ProducerFromFile, XSPPage
- public abstract class AbstractProducer
- extends AbstractActor
- implements Producer, Defaults
This abstract class implements the Producer interface and provides
utitity methods to convert the generated streams into DOM tress
that are used inside the processor pipeline. This class must be
seen as a transparent "mediator" between stream and DOM realms.
- Version:
- $Revision: 1.8 $ $Date: 2000/04/04 11:12:49 $
- Author:
- Stefano Mazzocchi
Fields inherited from interface org.apache.cocoon.Defaults |
BROWSERS_PROP, CACHE_DEFAULT, CACHE_PROP, COCOON_FORMAT_PI, COCOON_PROCESS_PI, DEFAULT_BROWSER, ERROR_INTERNALLY, FORMATTER_PROP, HOME, INIT_ARG, INTERPRETER_PROP, LOG, LOG_LEVEL, LOOPS, NAME, OUTPUTTING, PARSER_DEFAULT, PARSER_PROP, PROCESSOR_PROP, PRODUCER_PROP, PROFILER_DEFAULT, PROFILER_PROP, PROPERTIES, SHOW_STATUS, STATUS_URL, STATUS_URL_DEFAULT, STORE_DEFAULT, STORE_PROP, STYLESHEET_PI, TRANSFORMER_DEFAULT, TRANSFORMER_PROP, VERSION, WHOLE_REQUEST, YEAR |
Method Summary |
org.w3c.dom.Document |
getDocument(javax.servlet.http.HttpServletRequest request)
This method is the only one called by the Cocoon engine. |
boolean |
hasChanged(java.lang.Object request)
This method always returns true to reduce the evaluation overhead to
a minimum. |
void |
init(Director director)
Initialize the producer setting its context. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
context
protected java.lang.Object context
parser
protected Parser parser
AbstractProducer
public AbstractProducer()
init
public void init(Director director)
- Initialize the producer setting its context.
- Specified by:
init
in interface Actor
- Overrides:
init
in class AbstractActor
getDocument
public org.w3c.dom.Document getDocument(javax.servlet.http.HttpServletRequest request)
throws java.lang.Exception
- This method is the only one called by the Cocoon engine. Producers
are allowed to create streams and this class "mediates"
translating these streams into DOM trees. For producers willing
to generate DOM trees automatically, they should override this method
and may well ignore to implement the getStream() method since it's
never called directly by Cocoon.
- Specified by:
getDocument
in interface Producer
hasChanged
public boolean hasChanged(java.lang.Object request)
- This method always returns true to reduce the evaluation overhead to
a minimum. Producer are highly encouradged to overwrite this method
if they can provide a fast way to evaluate the response change.
- Specified by:
hasChanged
in interface Changeable
Copyright © 1999-2000 Apache Software Foundation. All Rights Reserved.