org.apache.cocoon.transformation
Class ValidatingTransformer

java.lang.Object
  org.apache.avalon.framework.logger.AbstractLogEnabled
      org.apache.cocoon.xml.AbstractXMLProducer
          org.apache.cocoon.xml.AbstractXMLPipe
              org.apache.cocoon.transformation.AbstractTransformer
                  org.apache.cocoon.transformation.ValidatingTransformer

All Implemented Interfaces:

Poolable, Recyclable, Disposable, Component, Configurable, LogEnabled, Serviceable, CacheableProcessingComponent, SitemapModelComponent, Transformer, XMLPipe, XMLProducer, XMLConsumer, ContentHandler, LexicalHandler

public class ValidatingTransformer
extends AbstractTransformer
implements Configurable, Serviceable, Disposable, CacheableProcessingComponent

The ValidatingTransformer provides a very simple Transformer validating documents while being processed in a Cocoon pipeline.

The only defined (but not required) configuration for this component is <grammar>...string...</grammar> indicating the default grammar language of the schemas to use.

This configuration parameter can be overridden by specifying the grammar parameter when using this Transformer in a pipeline.

If no grammar is specified (either as a configuration, or a parameter) this transformer will instruct the Validator to try and guess the grammar of the schema being parsed.

Field Summary

Fields inherited from class org.apache.cocoon.xml.AbstractXMLProducer

contentHandler, EMPTY_CONTENT_HANDLER, lexicalHandler, xmlConsumer

Fields inherited from interface org.apache.cocoon.transformation.Transformer

ROLE

Constructor Summary

ValidatingTransformer()
Create a new ValidatingTransformer instance.

Method Summary

void	configure(Configuration configuration) Configure this component instance.
void	dispose() Dispose of this component instance releasing all previously acquired required instances back to the ServiceManager.
Serializable	getKey() Return the unique key to associated with the schema being processed in the scope of the request being processed for caching.
SourceValidity	getValidity() Return the SourceValidity associated with the schema currently being processed in the scope of the request being processed.
void	recycle() Recycle this component instance at the end of request processing.
void	service(ServiceManager manager) Contextualize this component instance specifying its associated ServiceManager instance.
void	setConsumer(XMLConsumer consumer) Specify the XMLConsumer receiving SAX events emitted by this Transformer instance in the scope of a request.
void	setup(SourceResolver resolver, Map objectModel, String source, Parameters parameters) Contextualize this component in the scope of a pipeline when a request is processed.

Methods inherited from class org.apache.cocoon.xml.AbstractXMLPipe

characters, comment, endCDATA, endDocument, endDTD, endElement, endEntity, endPrefixMapping, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startCDATA, startDocument, startDTD, startElement, startEntity, startPrefixMapping

Methods inherited from class org.apache.cocoon.xml.AbstractXMLProducer

setContentHandler, setLexicalHandler

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

Methods inherited from interface org.xml.sax.ContentHandler

characters, endDocument, endElement, endPrefixMapping, ignorableWhitespace, processingInstruction, setDocumentLocator, skippedEntity, startDocument, startElement, startPrefixMapping

Methods inherited from interface org.xml.sax.ext.LexicalHandler

comment, endCDATA, endDTD, endEntity, startCDATA, startDTD, startEntity

Constructor Detail

ValidatingTransformer

public ValidatingTransformer()

Create a new ValidatingTransformer instance.

Method Detail

service

public void service(ServiceManager manager)
             throws ServiceException

Contextualize this component instance specifying its associated ServiceManager instance.

Specified by:

service in interface Serviceable

Parameters:

manager - the ServiceManager to associate with this component.

Throws:

ServiceException - if a dependancy of this could not be resolved.

configure

public void configure(Configuration configuration)
               throws ConfigurationException

Configure this component instance.

The only defined (but not required) configuration for this component is <grammar>...string...</grammar> indicating the default grammar used by this transformer used for parsing schemas.

Specified by:

configure in interface Configurable

Parameters:

configuration - a Configuration instance for this component.

Throws:

ConfigurationException - never thrown.

dispose

public void dispose()

Dispose of this component instance releasing all previously acquired required instances back to the ServiceManager.

Specified by:

dispose in interface Disposable

setup

public void setup(SourceResolver resolver,
                  Map objectModel,
                  String source,
                  Parameters parameters)
           throws ProcessingException,
                  SAXException,
                  IOException

Contextualize this component in the scope of a pipeline when a request is processed.

Specified by:

setup in interface SitemapModelComponent

Parameters:

resolver - the SourceResolver contextualized in this request.

objectModel - unused.

source - the source URI of the schema to validate against.

parameters - unused.

Throws:

ProcessingException

SAXException

IOException

setConsumer

public void setConsumer(XMLConsumer consumer)

Specify the XMLConsumer receiving SAX events emitted by this Transformer instance in the scope of a request.

Specified by:

setConsumer in interface XMLProducer

Overrides:

setConsumer in class AbstractXMLProducer

Parameters:

consumer - the XMLConsumer to send SAX events to.

getKey

public Serializable getKey()

Return the unique key to associated with the schema being processed in the scope of the request being processed for caching.

Specified by:

getKey in interface CacheableProcessingComponent

Returns:

a non null String representing the unique key for the schema.

getValidity

public SourceValidity getValidity()

Return the SourceValidity associated with the schema currently being processed in the scope of the request being processed.

Specified by:

getValidity in interface CacheableProcessingComponent

Returns:

a non null SourceValidity instance.

recycle

public void recycle()

Recycle this component instance at the end of request processing.

Specified by:

recycle in interface Recyclable

Overrides:

recycle in class AbstractXMLProducer