Class ContentHandlerProxy

java.lang.Object

com.icl.saxon.output.Emitter

com.icl.saxon.output.ContentHandlerProxy

All Implemented Interfaces:

Result, Locator

public class ContentHandlerProxy
extends Emitter
implements Locator

A ContentHandlerProxy is an Emitter that filters data before passing it to an underlying SAX2 ContentHandler. Relevant events (notably comments) can also be fed to a LexicalHandler. Note that in general the output passed to an Emitter corresponds to an External General Parsed Entity. A SAX2 ContentHandler only expects to deal with well-formed XML documents, so we only pass it the contents of the first element encountered.

Field Summary

Fields

Modifier and Type	Field	Description
protected ContentHandler	handler
protected LexicalHandler	lexicalHandler
protected Locator	locator
protected boolean	requireWellFormed

Fields inherited from class Emitter

namePool, outputProperties, outputStream, systemId, writer

Fields inherited from interface Result

PI_DISABLE_OUTPUT_ESCAPING, PI_ENABLE_OUTPUT_ESCAPING

Constructor Summary

Constructors

Constructor	Description
ContentHandlerProxy()

Method Summary

Modifier and Type	Method	Description
void	characters(char[] chars, int start, int len)	Character data
void	comment(char[] ch, int start, int length)	Output a comment.
void	endDocument()	End of document
void	endElement(int nameCode)	End of element
int	getColumnNumber()
int	getLineNumber()
String	getPublicId()	/////////////////////////////////////////////////////////////////
protected void	notifyNotWellFormed()	The following function notifies the content handler, by means of a processing instruction, that the output is not a well-formed document.
void	processingInstruction(String target, String data)	Processing Instruction
void	setDocumentLocator(Locator locator)	Set Document Locator
void	setEscaping(boolean escaping)	Switch escaping on or off.
void	setLexicalHandler(LexicalHandler handler)	Set the Lexical Handler to be used.
void	setOutputProperties(Properties props)	Set the output properties
void	setRequireWellFormed(boolean wellFormed)	Indicate whether the content handler can handle a stream of events that is merely well-balanced, or whether it can only handle a well-formed sequence.
void	setUnderlyingContentHandler(ContentHandler handler)	Set the underlying content handler.
void	startDocument()	Start of document
void	startElement(int nameCode, Attributes atts, int[] namespaces, int nscount)	Start of element

Methods inherited from class Emitter

getNamePool, getOutputProperties, getOutputStream, getSystemId, getWriter, makeEmitter, setNamePool, setOutputStream, setSystemId, setUnparsedEntity, setWriter, usesWriter

Methods inherited from class Object

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

Methods inherited from interface Locator

getSystemId

Field Details

handler

protected ContentHandler handler

lexicalHandler

protected LexicalHandler lexicalHandler

locator

protected Locator locator

requireWellFormed

protected boolean requireWellFormed

Constructor Details

ContentHandlerProxy

public ContentHandlerProxy()

Method Details

setUnderlyingContentHandler

public void setUnderlyingContentHandler(ContentHandler handler)

Set the underlying content handler. This call is mandatory before using the Emitter.

setOutputProperties

public void setOutputProperties(Properties props)

Set the output properties

Overrides:

setOutputProperties in class Emitter

setLexicalHandler

public void setLexicalHandler(LexicalHandler handler)

Set the Lexical Handler to be used. If called, this must be called AFTER setUnderlyingContentHandler()

setRequireWellFormed

public void setRequireWellFormed(boolean wellFormed)

Indicate whether the content handler can handle a stream of events that is merely well-balanced, or whether it can only handle a well-formed sequence.

setDocumentLocator

public void setDocumentLocator(Locator locator)

Set Document Locator

Overrides:

setDocumentLocator in class Emitter

startDocument

public void startDocument()
                   throws TransformerException

Start of document

Specified by:

startDocument in class Emitter

Throws:

TransformerException

endDocument

public void endDocument()
                 throws TransformerException

End of document

Specified by:

endDocument in class Emitter

Throws:

TransformerException

startElement

public void startElement(int nameCode,
 Attributes atts,
 int[] namespaces,
 int nscount)
                  throws TransformerException

Start of element

Specified by:

startElement in class Emitter

Parameters:

namespaces - Array of namespace codes identifying the namespace prefix/uri pairs associated with this element

nscount - Number of significant entries within namespaces array

Throws:

TransformerException

endElement

public void endElement(int nameCode)
                throws TransformerException

End of element

Specified by:

endElement in class Emitter

Throws:

TransformerException

characters

public void characters(char[] chars,
 int start,
 int len)
                throws TransformerException

Character data

Specified by:

characters in class Emitter

Throws:

TransformerException

notifyNotWellFormed

protected void notifyNotWellFormed()
                            throws SAXException

The following function notifies the content handler, by means of a processing instruction, that the output is not a well-formed document. If the content handler responds with an exception containing the message "continue" (this is the only way it can get information back) then further events are notified, otherwise they are suppressed.

Throws:

SAXException

processingInstruction

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

Processing Instruction

Specified by:

processingInstruction in class Emitter

Throws:

TransformerException

comment

public void comment(char[] ch,
 int start,
 int length)
             throws TransformerException

Output a comment. Passes it on to the ContentHandler provided that the ContentHandler is also a SAX2 LexicalHandler.

Specified by:

comment in class Emitter

Throws:

TransformerException

setEscaping

public void setEscaping(boolean escaping)

Switch escaping on or off. This is called when the XSLT disable-output-escaping attribute is used to switch escaping on or off. It is not called for other sections of output (e.g. element names) where escaping is inappropriate. The action, as defined in JAXP 1.1, is to notify the request to the Content Handler using a processing instruction.

Overrides:

setEscaping in class Emitter

getPublicId

public String getPublicId()

/////////////////////////////////////////////////////////////////

Specified by:

getPublicId in interface Locator

getLineNumber

public int getLineNumber()

Specified by:

getLineNumber in interface Locator

getColumnNumber

public int getColumnNumber()

Specified by:

getColumnNumber in interface Locator