com.bea.wlpi.common
Class XMLProxy

java.lang.Object
  |
  +--com.bea.wlpi.common.XMLProxy

public class XMLProxy

extends java.lang.Object

implements org.xml.sax.ContentHandler, org.xml.sax.XMLReader

Provide a proxy to delegate XML parsing.

This class delegates all parsing work over to destination handler, and returns parsing to the original handler when the end of certain XML piece is hit.

For destination handler, XMLProxy was no different than a SAX parser, it can delegate parsing job even further by setting XMLProxy's content handler; For the orginal handler side, it was a content handler doing all parsing.

Using this proxy technique, one can delegate the parsing of certain XML section to external objects and ensure the parsing is handed back at the end.

Since:

WebLogic Process Integrator 2.0

Author:

Copyright © 2000, 2001 BEA Systems, Inc. All Rights Reserved.

Constructor Summary

XMLProxy(java.lang.String end, org.xml.sax.XMLReader parser, org.xml.sax.ContentHandler handler)
Construct a new XMLProxy.

Method Summary

void	characters(char[] ch, int start, int length)
void	endDocument()
void	endElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String name)
void	endPrefixMapping(java.lang.String prefix)
org.xml.sax.ContentHandler	getContentHandler()
org.xml.sax.DTDHandler	getDTDHandler()
org.xml.sax.EntityResolver	getEntityResolver()
org.xml.sax.ErrorHandler	getErrorHandler()
boolean	getFeature(java.lang.String name)
java.lang.Object	getProperty(java.lang.String name)
void	ignorableWhitespace(char[] ch, int start, int length)
void	parse(org.xml.sax.InputSource input)
void	parse(java.lang.String systemId)
void	processingInstruction(java.lang.String target, java.lang.String data)
void	setContentHandler(org.xml.sax.ContentHandler handler)
void	setDocumentLocator(org.xml.sax.Locator locator)
void	setDTDHandler(org.xml.sax.DTDHandler handler)
void	setEntityResolver(org.xml.sax.EntityResolver resolver)
void	setErrorHandler(org.xml.sax.ErrorHandler handler)
void	setFeature(java.lang.String name, boolean value)
void	setProperty(java.lang.String name, java.lang.Object value)
void	skippedEntity(java.lang.String name)
void	startDocument()
void	startElement(java.lang.String namespaceURI, java.lang.String localName, java.lang.String name, org.xml.sax.Attributes atts)
void	startPrefixMapping(java.lang.String prefix, java.lang.String uri)

Methods inherited from class java.lang.Object

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

Constructor Detail

XMLProxy

public XMLProxy(java.lang.String end,
                org.xml.sax.XMLReader parser,
                org.xml.sax.ContentHandler handler)

Construct a new XMLProxy. The old content handler is marked and will be reset as the content handler of this parsing once parsing reaches the end.

Parameters:

end - The element name for the end of XML section which indicates that parsing should be returned to the original handler.

parser - The parser.

handler - The ContendHandler which does the parsing for this particular section.

Method Detail

endElement

public void endElement(java.lang.String namespaceURI,
                       java.lang.String localName,
                       java.lang.String name)
                throws org.xml.sax.SAXException

Specified by:

endElement in interface org.xml.sax.ContentHandler

endDocument

public void endDocument()
                 throws org.xml.sax.SAXException

Specified by:

endDocument in interface org.xml.sax.ContentHandler

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws org.xml.sax.SAXException

Specified by:

characters in interface org.xml.sax.ContentHandler

startPrefixMapping

public void startPrefixMapping(java.lang.String prefix,
                               java.lang.String uri)
                        throws org.xml.sax.SAXException

Specified by:

startPrefixMapping in interface org.xml.sax.ContentHandler

endPrefixMapping

public void endPrefixMapping(java.lang.String prefix)
                      throws org.xml.sax.SAXException

Specified by:

endPrefixMapping in interface org.xml.sax.ContentHandler

skippedEntity

public void skippedEntity(java.lang.String name)
                   throws org.xml.sax.SAXException

Specified by:

skippedEntity in interface org.xml.sax.ContentHandler

ignorableWhitespace

public void ignorableWhitespace(char[] ch,
                                int start,
                                int length)
                         throws org.xml.sax.SAXException

Specified by:

ignorableWhitespace in interface org.xml.sax.ContentHandler

processingInstruction

public void processingInstruction(java.lang.String target,
                                  java.lang.String data)
                           throws org.xml.sax.SAXException

Specified by:

processingInstruction in interface org.xml.sax.ContentHandler

setDocumentLocator

public void setDocumentLocator(org.xml.sax.Locator locator)

Specified by:

setDocumentLocator in interface org.xml.sax.ContentHandler

startDocument

public void startDocument()
                   throws org.xml.sax.SAXException

Specified by:

startDocument in interface org.xml.sax.ContentHandler

startElement

public void startElement(java.lang.String namespaceURI,
                         java.lang.String localName,
                         java.lang.String name,
                         org.xml.sax.Attributes atts)
                  throws org.xml.sax.SAXException

Specified by:

startElement in interface org.xml.sax.ContentHandler

getFeature

public boolean getFeature(java.lang.String name)
                   throws org.xml.sax.SAXNotRecognizedException,
                          org.xml.sax.SAXNotSupportedException

Specified by:

getFeature in interface org.xml.sax.XMLReader

setFeature

public void setFeature(java.lang.String name,
                       boolean value)
                throws org.xml.sax.SAXNotRecognizedException,
                       org.xml.sax.SAXNotSupportedException

Specified by:

setFeature in interface org.xml.sax.XMLReader

getProperty

public java.lang.Object getProperty(java.lang.String name)
                             throws org.xml.sax.SAXNotRecognizedException,
                                    org.xml.sax.SAXNotSupportedException

Specified by:

getProperty in interface org.xml.sax.XMLReader

setProperty

public void setProperty(java.lang.String name,
                        java.lang.Object value)
                 throws org.xml.sax.SAXNotRecognizedException,
                        org.xml.sax.SAXNotSupportedException

Specified by:

setProperty in interface org.xml.sax.XMLReader

setEntityResolver

public void setEntityResolver(org.xml.sax.EntityResolver resolver)

Specified by:

setEntityResolver in interface org.xml.sax.XMLReader

getEntityResolver

public org.xml.sax.EntityResolver getEntityResolver()

Specified by:

getEntityResolver in interface org.xml.sax.XMLReader

setDTDHandler

public void setDTDHandler(org.xml.sax.DTDHandler handler)

Specified by:

setDTDHandler in interface org.xml.sax.XMLReader

getDTDHandler

public org.xml.sax.DTDHandler getDTDHandler()

Specified by:

getDTDHandler in interface org.xml.sax.XMLReader

setContentHandler

public void setContentHandler(org.xml.sax.ContentHandler handler)

Specified by:

setContentHandler in interface org.xml.sax.XMLReader

getContentHandler

public org.xml.sax.ContentHandler getContentHandler()

Specified by:

getContentHandler in interface org.xml.sax.XMLReader

setErrorHandler

public void setErrorHandler(org.xml.sax.ErrorHandler handler)

Specified by:

setErrorHandler in interface org.xml.sax.XMLReader

getErrorHandler

public org.xml.sax.ErrorHandler getErrorHandler()

Specified by:

getErrorHandler in interface org.xml.sax.XMLReader

parse

public void parse(org.xml.sax.InputSource input)
           throws java.io.IOException,
                  org.xml.sax.SAXException

Specified by:

parse in interface org.xml.sax.XMLReader

parse

public void parse(java.lang.String systemId)
           throws java.io.IOException,
                  org.xml.sax.SAXException

Specified by:

parse in interface org.xml.sax.XMLReader