org.apache.jackrabbit.commons.xml
Class ProxyContentHandler

java.lang.Object
  org.xml.sax.helpers.DefaultHandler
      org.apache.jackrabbit.commons.xml.ProxyContentHandler

All Implemented Interfaces:

ContentHandler, DTDHandler, EntityResolver, ErrorHandler

Direct Known Subclasses:

XmlnsContentHandler

public class ProxyContentHandler
extends DefaultHandler

A proxy content handler that passes all SAX events as-is to the proxied handler.

As a convenience this class inherits the DefaultHandler class instead of just the ContentHandler interface. This makes it possible to use this class as an adapter when using methods like SAXParser.parse(String, DefaultHandler) that expect a DefaultHandler instance instead of a ContentHandler.

Field Summary

protected ContentHandler

handler The proxied content handler.

Constructor Summary

ProxyContentHandler(ContentHandler handler)
Creates a proxy for the given content handler.

Method Summary

void	characters(char[] ch, int start, int length) Delegated to handler.
void	endDocument() Delegated to handler.
void	endElement(String namespaceURI, String localName, String qName) Delegated to handler.
void	endPrefixMapping(String prefix) Delegated to handler.
void	ignorableWhitespace(char[] ch, int start, int length) Delegated to handler.
void	processingInstruction(String target, String data) Delegated to handler.
void	setDocumentLocator(Locator locator) Delegated to handler.
void	skippedEntity(String name) Delegated to handler.
void	startDocument() Delegated to handler.
void	startElement(String namespaceURI, String localName, String qName, Attributes atts) Delegated to handler.
void	startPrefixMapping(String prefix, String uri) Delegated to handler.
String	toString()

Methods inherited from class org.xml.sax.helpers.DefaultHandler

error, fatalError, notationDecl, resolveEntity, unparsedEntityDecl, warning

Methods inherited from class java.lang.Object

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

Field Detail

handler

protected ContentHandler handler

The proxied content handler. This is a protected, non-final field so that subclasses can access the proxied handler or even replace it they want.

Constructor Detail

ProxyContentHandler

public ProxyContentHandler(ContentHandler handler)

Creates a proxy for the given content handler.

Parameters:

handler - content handler to be proxied

Method Detail

characters

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

Delegated to handler.

Specified by:

characters in interface ContentHandler

Overrides:

characters in class DefaultHandler

Parameters:

ch - passed through

start - passed through

length - passed through

Throws:

SAXException - if an error occurs

endDocument

public void endDocument()
                 throws SAXException

Delegated to handler.

Specified by:

endDocument in interface ContentHandler

Overrides:

endDocument in class DefaultHandler

Throws:

SAXException - if an error occurs

endElement

public void endElement(String namespaceURI,
                       String localName,
                       String qName)
                throws SAXException

Delegated to handler.

Specified by:

endElement in interface ContentHandler

Overrides:

endElement in class DefaultHandler

Parameters:

namespaceURI - passed through

localName - passed through

qName - passed through

Throws:

SAXException - if an error occurs

endPrefixMapping

public void endPrefixMapping(String prefix)
                      throws SAXException

Delegated to handler.

Specified by:

endPrefixMapping in interface ContentHandler

Overrides:

endPrefixMapping in class DefaultHandler

Parameters:

prefix - passed through

Throws:

SAXException - if an error occurs

ignorableWhitespace

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

Delegated to handler.

Specified by:

ignorableWhitespace in interface ContentHandler

Overrides:

ignorableWhitespace in class DefaultHandler

Parameters:

ch - passed through

start - passed through

length - passed through

Throws:

SAXException - if an error occurs

processingInstruction

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

Delegated to handler.

Specified by:

processingInstruction in interface ContentHandler

Overrides:

processingInstruction in class DefaultHandler

Parameters:

target - passed through

data - passed through

Throws:

SAXException - if an error occurs

setDocumentLocator

public void setDocumentLocator(Locator locator)

Delegated to handler.

Specified by:

setDocumentLocator in interface ContentHandler

Overrides:

setDocumentLocator in class DefaultHandler

Parameters:

locator - passed through

skippedEntity

public void skippedEntity(String name)
                   throws SAXException

Delegated to handler.

Specified by:

skippedEntity in interface ContentHandler

Overrides:

skippedEntity in class DefaultHandler

Parameters:

name - passed through

Throws:

SAXException - if an error occurs

startDocument

public void startDocument()
                   throws SAXException

Delegated to handler.

Specified by:

startDocument in interface ContentHandler

Overrides:

startDocument in class DefaultHandler

Throws:

SAXException - if an error occurs

startElement

public void startElement(String namespaceURI,
                         String localName,
                         String qName,
                         Attributes atts)
                  throws SAXException

Delegated to handler.

Specified by:

startElement in interface ContentHandler

Overrides:

startElement in class DefaultHandler

Parameters:

namespaceURI - passed through

localName - passed through

qName - passed through

atts - passed through

Throws:

SAXException - if an error occurs

startPrefixMapping

public void startPrefixMapping(String prefix,
                               String uri)
                        throws SAXException

Delegated to handler.

Specified by:

startPrefixMapping in interface ContentHandler

Overrides:

startPrefixMapping in class DefaultHandler

Parameters:

prefix - passed through

uri - passed through

Throws:

SAXException - if an error occurs

toString

public String toString()

Overrides:

toString in class Object