org.apache.cocoon.transformation
Class PatternTransformer

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.PatternTransformer

All Implemented Interfaces:

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

public class PatternTransformer
extends AbstractTransformer
implements LogEnabled, Serviceable, Recyclable, Disposable, Parameterizable, CacheableProcessingComponent

This transfomer transforms text pattern of a XML file into lexemes by using a lexicon file.

Input:

 <section>
  Text 123 bla
 </section>
 

can be transformed into the following output:

 <section>
  Text
  <lexeme symbol="number" text="123"/>
  bla
 </section>
 

Version:

$Id: PatternTransformer.html 1304258 2012-03-23 10:09:27Z ilgrosso $

Author:

Stephan Michels

Nested Class Summary

static class

PatternTransformer.LexicalAutomatonEntry This class represent a entry in a store to cache the lexical automaton.

Field Summary

static String

NS Namespace for the SAX events.

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

PatternTransformer()

Method Summary

void	characters(char[] c, int start, int len) Receive notification of character data.
void	comment(char[] ch, int start, int len) Report an XML comment anywhere in the document.
void	dispose() The dispose operation is called at the end of a components lifecycle.
void	enableLogging(Logger logger) Provide component with a logger.
void	endElement(String uri, String loc, String raw) Receive notification of the end of an element.
Serializable	getKey() Generate the unique key.
SourceValidity	getValidity() Generate the validity object.
void	ignorableWhitespace(char[] c, int start, int len) Receive notification of ignorable whitespace in element content.
void	parameterize(Parameters parameters) Provide component with parameters.
void	processingInstruction(String target, String data) Receive notification of a processing instruction.
void	recycle() Recycle this component.
void	service(ServiceManager manager) Pass the ServiceManager to the Serviceable.
void	setup(SourceResolver resolver, Map objectmodel, String src, Parameters parameters) Set the SourceResolver, objectModel Map, the source and sitemap Parameters used to process the request.
void	startElement(String uri, String loc, String raw, Attributes a) Receive notification of the beginning of an element.

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

endCDATA, endDocument, endDTD, endEntity, endPrefixMapping, setDocumentLocator, skippedEntity, startCDATA, startDocument, startDTD, startEntity, startPrefixMapping

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

setConsumer, setContentHandler, setLexicalHandler

Methods inherited from class org.apache.avalon.framework.logger.AbstractLogEnabled

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

endDocument, endPrefixMapping, setDocumentLocator, skippedEntity, startDocument, startPrefixMapping

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

endCDATA, endDTD, endEntity, startCDATA, startDTD, startEntity

Methods inherited from interface org.apache.cocoon.xml.XMLProducer

setConsumer

Field Detail

NS

public static final String NS

Namespace for the SAX events.

See Also:

Constant Field Values

Constructor Detail

PatternTransformer

public PatternTransformer()

Method Detail

enableLogging

public void enableLogging(Logger logger)

Provide component with a logger.

Specified by:

enableLogging in interface LogEnabled

Overrides:

enableLogging in class AbstractLogEnabled

Parameters:

logger - the logger

service

public void service(ServiceManager manager)

Pass the ServiceManager to the Serviceable. The Serviceable implementation should use the specified ServiceManager to acquire the services it needs for execution.

Specified by:

service in interface Serviceable

Parameters:

manager - The ServiceManager which this Serviceable uses.

parameterize

public void parameterize(Parameters parameters)
                  throws ParameterException

Provide component with parameters.

Specified by:

parameterize in interface Parameterizable

Parameters:

parameters - the parameters

Throws:

ParameterException - if parameters are invalid

setup

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

Set the SourceResolver, objectModel Map, the source and sitemap Parameters used to process the request.

Specified by:

setup in interface SitemapModelComponent

Parameters:

resolver - Source resolver

objectmodel - Object model

src - Source

parameters - Parameters

Throws:

IOException

ProcessingException

SAXException

getKey

public Serializable getKey()

Generate the unique key. This key must be unique inside the space of this component.

Specified by:

getKey in interface CacheableProcessingComponent

Returns:

The generated key hashes the src

getValidity

public SourceValidity getValidity()

Generate the validity object.

Specified by:

getValidity in interface CacheableProcessingComponent

Returns:

The generated validity object or null if the component is currently not cacheable.

recycle

public void recycle()

Recycle this component. All instance variables are set to null.

Specified by:

recycle in interface Recyclable

Overrides:

recycle in class AbstractXMLProducer

dispose

public void dispose()

The dispose operation is called at the end of a components lifecycle.

Specified by:

dispose in interface Disposable

startElement

public void startElement(String uri,
                         String loc,
                         String raw,
                         Attributes a)
                  throws SAXException

Receive notification of the beginning of an element.

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class AbstractXMLPipe

Parameters:

uri - The Namespace URI, or the empty string if the element has no Namespace URI or if Namespace processing is not being performed.

loc - The local name (without prefix), or the empty string if Namespace processing is not being performed.

raw - The raw XML 1.0 name (with prefix), or the empty string if raw names are not available.

a - The attributes attached to the element. If there are no attributes, it shall be an empty Attributes object.

Throws:

SAXException

endElement

public void endElement(String uri,
                       String loc,
                       String raw)
                throws SAXException

Receive notification of the end of an element.

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class AbstractXMLPipe

Parameters:

uri - The Namespace URI, or the empty string if the element has no Namespace URI or if Namespace processing is not being performed.

loc - The local name (without prefix), or the empty string if Namespace processing is not being performed.

raw - The raw XML 1.0 name (with prefix), or the empty string if raw names are not available.

Throws:

SAXException

characters

public void characters(char[] c,
                       int start,
                       int len)
                throws SAXException

Receive notification of character data.

Specified by:

characters in interface ContentHandler

Overrides:

characters in class AbstractXMLPipe

Parameters:

c - The characters from the XML document.

start - The start position in the array.

len - The number of characters to read from the array.

Throws:

SAXException

ignorableWhitespace

public void ignorableWhitespace(char[] c,
                                int start,
                                int len)
                         throws SAXException

Receive notification of ignorable whitespace in element content.

Specified by:

ignorableWhitespace in interface ContentHandler

Overrides:

ignorableWhitespace in class AbstractXMLPipe

Parameters:

c - The characters from the XML document.

start - The start position in the array.

len - The number of characters to read from the array.

Throws:

SAXException

processingInstruction

public void processingInstruction(String target,
                                  String data)
                           throws SAXException

Receive notification of a processing instruction.

Specified by:

processingInstruction in interface ContentHandler

Overrides:

processingInstruction in class AbstractXMLPipe

Parameters:

target - The processing instruction target.

data - The processing instruction data, or null if none was supplied.

Throws:

SAXException

comment

public void comment(char[] ch,
                    int start,
                    int len)
             throws SAXException

Report an XML comment anywhere in the document.

Specified by:

comment in interface LexicalHandler

Overrides:

comment in class AbstractXMLPipe

Parameters:

ch - An array holding the characters in the comment.

start - The starting position in the array.

len - The number of characters to use from the array.

Throws:

SAXException