CleanupTransformer (Cocoon HTML Block Implementation 1.0.0 API)

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org.apache.cocoon.transformation
Class CleanupTransformer

java.lang.Object
  org.apache.cocoon.util.AbstractLogEnabled
      org.apache.cocoon.xml.AbstractXMLProducer
          org.apache.cocoon.xml.AbstractXMLPipe
              org.apache.cocoon.transformation.AbstractTransformer
                  org.apache.cocoon.transformation.AbstractSAXTransformer
                      org.apache.cocoon.transformation.CleanupTransformer

All Implemented Interfaces:: org.apache.cocoon.caching.CacheableProcessingComponent, Configurable, ContentHandler, Disposable, LexicalHandler, Poolable, Recyclable, Serviceable, org.apache.cocoon.sitemap.SitemapModelComponent, org.apache.cocoon.transformation.Transformer, XMLConsumer, org.apache.cocoon.xml.XMLConsumer, org.apache.cocoon.xml.XMLPipe, org.apache.cocoon.xml.XMLProducer

public class CleanupTransformer
extends org.apache.cocoon.transformation.AbstractSAXTransformer
implements org.apache.cocoon.caching.CacheableProcessingComponent

Cleanup transformer: Removes excess whitespace while adding some where needed for legibility. Strips unwanted namespace declarations.

The cleanup transformer can be used for basically any document as-is or customized by schema (inline vs. block elements) for easier reading.

Transformer declaration: <map:components> <map:transformers> <map:transformer name="htmlcleanup" src="org.apache.cocoon.transformation.CleanupTransformer"> <preserve-uri>*</preserve-uri> </map:transformer> <map:transformer name="xhtmlcleanup" src="org.apache.cocoon.transformation.CleanupTransformer"> <inline-elements>a,abbr,acronym,b,br,font,i,u,img</inline-elements> <preserve-uri>http://www.w3.org/1999/xhtml</preserve-uri> </map:transformer> </map:transformers> </map:components>

The "inline-elements" configuration element refers to a list of element names that are not to be indented. The "preserve-uri" configuration element specifies a namespace uri mapping that is meant for output. All other namespace declarations are stripped from the output. The "preserve-uri" element may appear more than once. If "preserve-uri" is omitted, all namespaces/prefixes are removed from the output.

Transformer usage: <transform type="xhtmlcleanup"> <map:parameter name="indent-size" value="4"/> </transform>

The optional parameter "indent-size" specifies the number of additional space characters appearing at each level of the output document. The default value is 2.

Bugs: Nested namespace declarations with the same namespace prefix will break the code.

Version:: $Id: CleanupTransformer.html 1304280 2012-03-23 11:18:01Z ilgrosso $

Field Summary

Fields inherited from class org.apache.cocoon.transformation.AbstractSAXTransformer

context, defaultNamespaceURI, EMPTY_ATTRIBUTES, ignoreEmptyCharacters, ignoreEventsCount, ignoreHooksCount, ignoreWhitespaces, manager, namespaceURI, objectModel, parameters, recorderStack, removeOurNamespacePrefixes, request, resolver, response, source, stack

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

CleanupTransformer()


Method Summary

void characters(char[] ch, int start, int length)


void configure(Configuration conf)


void endElement(String uri, String qName, String lName)


void endPrefixMapping(String prefix)


Serializable getKey()


SourceValidity getValidity()


void ignorableWhitespace(char[] ch, int start, int length)


void recycle()


void setup(org.apache.cocoon.environment.SourceResolver resolver, Map objectModel, String src, Parameters par)


void startElement(String uri, String qName, String lName, Attributes attrs)


void startPrefixMapping(String prefix, String uri)


Methods inherited from class org.apache.cocoon.transformation.AbstractSAXTransformer

addRecorder, comment, dispose, endCDATA, endDocument, endDTD, endEntity, endParametersRecording, endParametersRecording, endRecording, endSAXRecording, endSerializedXMLRecording, endTextRecording, endTransformingElement, findPrefixMapping, getMutableAttributes, processingInstruction, removeRecorder, sendEndElementEvent, sendEndElementEventNS, sendEndPrefixMapping, sendEvents, sendParametersEvents, sendStartElementEvent, sendStartElementEvent, sendStartElementEventNS, sendStartElementEventNS, sendStartPrefixMapping, sendTextEvent, service, setDocumentLocator, setupTransforming, skippedEntity, startCDATA, startDocument, startDTD, startEntity, startParametersRecording, startRecording, startSAXRecording, startSerializedXMLRecording, startTextRecording, startTransformingElement

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

setConsumer, setContentHandler, setLexicalHandler

Methods inherited from class org.apache.cocoon.util.AbstractLogEnabled

getLogger, setLogger

Methods inherited from class java.lang.Object

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

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

setConsumer

Constructor Detail