org.apache.xalan.transformer
Class TransformerHandlerImpl

java.lang.Object
  |
  +--org.apache.xalan.transformer.TransformerHandlerImpl

public class TransformerHandlerImpl

extends java.lang.Object

implements EntityResolver, DTDHandler, ContentHandler, ErrorHandler, LexicalHandler, TransformerHandler, DeclHandler

A TransformerHandler listens for SAX ContentHandler parse events and transforms them to a Result.

Constructor Summary

TransformerHandlerImpl(TransformerImpl transformer, boolean doFragment, java.lang.String baseSystemID)
Construct a TransformerHandlerImpl.

Method Summary

void	attributeDecl(java.lang.String eName, java.lang.String aName, java.lang.String type, java.lang.String valueDefault, java.lang.String value) Report an attribute type declaration.
void	characters(char[] ch, int start, int length) Filter a character data event.
void	comment(char[] ch, int start, int length) Report an XML comment anywhere in the document.
void	elementDecl(java.lang.String name, java.lang.String model) Report an element type declaration.
void	endCDATA() Report the end of a CDATA section.
void	endDocument() Filter an end document event.
void	endDTD() Report the end of DTD declarations.
void	endElement(java.lang.String uri, java.lang.String localName, java.lang.String qName) Filter an end element event.
void	endEntity(java.lang.String name) Report the end of an entity.
void	endPrefixMapping(java.lang.String prefix) Filter an end Namespace prefix mapping event.
void	error(SAXParseException e) Filter an error event.
void	externalEntityDecl(java.lang.String name, java.lang.String publicId, java.lang.String systemId) Report a parsed external entity declaration.
void	fatalError(SAXParseException e) Filter a fatal error event.
java.lang.String	getSystemId() Get the base ID (URI or system ID) from where relative URLs will be resolved.
Transformer	getTransformer() Get the Transformer associated with this handler, which is needed in order to set parameters and output properties.
void	ignorableWhitespace(char[] ch, int start, int length) Filter an ignorable whitespace event.
void	internalEntityDecl(java.lang.String name, java.lang.String value) Report an internal entity declaration.
void	notationDecl(java.lang.String name, java.lang.String publicId, java.lang.String systemId) Filter a notation declaration event.
void	processingInstruction(java.lang.String target, java.lang.String data) Filter a processing instruction event.
InputSource	resolveEntity(java.lang.String publicId, java.lang.String systemId) Filter an external entity resolution.
void	setDocumentLocator(Locator locator) Filter a new document locator event.
void	setResult(Result result) Enables the user of the TransformerHandler to set the to set the Result for the transformation.
void	setSystemId(java.lang.String systemID) Set the base ID (URI or system ID) from where relative URLs will be resolved.
void	skippedEntity(java.lang.String name) Filter a skipped entity event.
void	startCDATA() Report the start of a CDATA section.
void	startDocument() Filter a start document event.
void	startDTD(java.lang.String name, java.lang.String publicId, java.lang.String systemId) Report the start of DTD declarations, if any.
void	startElement(java.lang.String uri, java.lang.String localName, java.lang.String qName, Attributes atts) Filter a start element event.
void	startEntity(java.lang.String name) Report the beginning of an entity in content.
void	startPrefixMapping(java.lang.String prefix, java.lang.String uri) Filter a start Namespace prefix mapping event.
void	unparsedEntityDecl(java.lang.String name, java.lang.String publicId, java.lang.String systemId, java.lang.String notationName) Filter an unparsed entity declaration event.
void	warning(SAXParseException e) Filter a warning event.

Methods inherited from class java.lang.Object

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

Constructor Detail

TransformerHandlerImpl

public TransformerHandlerImpl(TransformerImpl transformer,
                              boolean doFragment,
                              java.lang.String baseSystemID)

Construct a TransformerHandlerImpl.

Parameters:

transformer - Non-null reference to the Xalan transformer impl.

doFragment - True if the result should be a document fragement.

baseSystemID - The system ID to use as the base for relative URLs.

Method Detail

setResult

public void setResult(Result result)
               throws java.lang.IllegalArgumentException

Enables the user of the TransformerHandler to set the to set the Result for the transformation.

Specified by:

setResult in interface TransformerHandler

Parameters:

result - A Result instance, should not be null.

Throws:

java.lang.IllegalArgumentException - if result is invalid for some reason.

setSystemId

public void setSystemId(java.lang.String systemID)

Set the base ID (URI or system ID) from where relative URLs will be resolved.

Specified by:

setSystemId in interface TransformerHandler

Parameters:

systemID - Base URI for the source tree.

getSystemId

public java.lang.String getSystemId()

Get the base ID (URI or system ID) from where relative URLs will be resolved.

Specified by:

getSystemId in interface TransformerHandler

Returns:

The systemID that was set with setSystemId(java.lang.String).

getTransformer

public Transformer getTransformer()

Get the Transformer associated with this handler, which is needed in order to set parameters and output properties.

Specified by:

getTransformer in interface TransformerHandler

Returns:

The Transformer associated with this handler

resolveEntity

public InputSource resolveEntity(java.lang.String publicId,
                                 java.lang.String systemId)
                          throws SAXException,
                                 java.io.IOException

Filter an external entity resolution.

Specified by:

resolveEntity in interface EntityResolver

Parameters:

publicId - The entity's public identifier, or null.

systemId - The entity's system identifier.

Returns:

A new InputSource or null for the default.

Throws:

java.io.IOException -

SAXException - The client may throw an exception during processing.

java.io.IOException - The client may throw an I/O-related exception while obtaining the new InputSource.

See Also:

EntityResolver.resolveEntity(java.lang.String, java.lang.String)

notationDecl

public void notationDecl(java.lang.String name,
                         java.lang.String publicId,
                         java.lang.String systemId)
                  throws SAXException

Filter a notation declaration event.

Specified by:

notationDecl in interface DTDHandler

Parameters:

name - The notation name.

publicId - The notation's public identifier, or null.

systemId - The notation's system identifier, or null.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

DTDHandler.notationDecl(java.lang.String, java.lang.String, java.lang.String)

unparsedEntityDecl

public void unparsedEntityDecl(java.lang.String name,
                               java.lang.String publicId,
                               java.lang.String systemId,
                               java.lang.String notationName)
                        throws SAXException

Filter an unparsed entity declaration event.

Specified by:

unparsedEntityDecl in interface DTDHandler

Parameters:

name - The entity name.

publicId - The entity's public identifier, or null.

systemId - The entity's system identifier, or null.

notationName - The name of the associated notation.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

DTDHandler.unparsedEntityDecl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)

setDocumentLocator

public void setDocumentLocator(Locator locator)

Filter a new document locator event.

Specified by:

setDocumentLocator in interface ContentHandler

Parameters:

locator - The document locator.

See Also:

ContentHandler.setDocumentLocator(org.xml.sax.Locator)

startDocument

public void startDocument()
                   throws SAXException

Filter a start document event.

Specified by:

startDocument in interface ContentHandler

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.startDocument()

endDocument

public void endDocument()
                 throws SAXException

Filter an end document event.

Specified by:

endDocument in interface ContentHandler

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.endDocument()

startPrefixMapping

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

Filter a start Namespace prefix mapping event.

Specified by:

startPrefixMapping in interface ContentHandler

Parameters:

prefix - The Namespace prefix.

uri - The Namespace URI.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.startPrefixMapping(java.lang.String, java.lang.String)

endPrefixMapping

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

Filter an end Namespace prefix mapping event.

Specified by:

endPrefixMapping in interface ContentHandler

Parameters:

prefix - The Namespace prefix.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.endPrefixMapping(java.lang.String)

startElement

public void startElement(java.lang.String uri,
                         java.lang.String localName,
                         java.lang.String qName,
                         Attributes atts)
                  throws SAXException

Filter a start element event.

Specified by:

startElement in interface ContentHandler

Parameters:

uri - The element's Namespace URI, or the empty string.

localName - The element's local name, or the empty string.

qName - The element's qualified (prefixed) name, or the empty string.

atts - The element's attributes.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)

endElement

public void endElement(java.lang.String uri,
                       java.lang.String localName,
                       java.lang.String qName)
                throws SAXException

Filter an end element event.

Specified by:

endElement in interface ContentHandler

Parameters:

uri - The element's Namespace URI, or the empty string.

localName - The element's local name, or the empty string.

qName - The element's qualified (prefixed) name, or the empty string.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.endElement(java.lang.String, java.lang.String, java.lang.String)

characters

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

Filter a character data event.

Specified by:

characters in interface ContentHandler

Parameters:

ch - An array of characters.

start - The starting position in the array.

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

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.characters(char[], int, int)

ignorableWhitespace

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

Filter an ignorable whitespace event.

Specified by:

ignorableWhitespace in interface ContentHandler

Parameters:

ch - An array of characters.

start - The starting position in the array.

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

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.ignorableWhitespace(char[], int, int)

processingInstruction

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

Filter a processing instruction event.

Specified by:

processingInstruction in interface ContentHandler

Parameters:

target - The processing instruction target.

data - The text following the target.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.processingInstruction(java.lang.String, java.lang.String)

skippedEntity

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

Filter a skipped entity event.

Specified by:

skippedEntity in interface ContentHandler

Parameters:

name - The name of the skipped entity.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ContentHandler.skippedEntity(java.lang.String)

warning

public void warning(SAXParseException e)
             throws SAXException

Filter a warning event.

Specified by:

warning in interface ErrorHandler

Parameters:

e - The nwarning as an exception.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ErrorHandler.warning(org.xml.sax.SAXParseException)

error

public void error(SAXParseException e)
           throws SAXException

Filter an error event.

Specified by:

error in interface ErrorHandler

Parameters:

e - The error as an exception.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ErrorHandler.error(org.xml.sax.SAXParseException)

fatalError

public void fatalError(SAXParseException e)
                throws SAXException

Filter a fatal error event.

Specified by:

fatalError in interface ErrorHandler

Parameters:

e - The error as an exception.

Throws:

SAXException - The client may throw an exception during processing.

See Also:

ErrorHandler.fatalError(org.xml.sax.SAXParseException)

startDTD

public void startDTD(java.lang.String name,
                     java.lang.String publicId,
                     java.lang.String systemId)
              throws SAXException

Report the start of DTD declarations, if any.

Any declarations are assumed to be in the internal subset unless otherwise indicated by a startEntity event.

Note that the start/endDTD events will appear within the start/endDocument events from ContentHandler and before the first startElement event.

Specified by:

startDTD in interface LexicalHandler

Parameters:

name - The document type name.

publicId - The declared public identifier for the external DTD subset, or null if none was declared.

systemId - The declared system identifier for the external DTD subset, or null if none was declared.

Throws:

SAXException - The application may raise an exception.

See Also:

endDTD(), startEntity(java.lang.String)

endDTD

public void endDTD()
            throws SAXException

Report the end of DTD declarations.

Specified by:

endDTD in interface LexicalHandler

Throws:

SAXException - The application may raise an exception.

See Also:

startDTD(java.lang.String, java.lang.String, java.lang.String)

startEntity

public void startEntity(java.lang.String name)
                 throws SAXException

Report the beginning of an entity in content.

NOTE: entity references in attribute values -- and the start and end of the document entity -- are never reported.

The start and end of the external DTD subset are reported using the pseudo-name "[dtd]". All other events must be properly nested within start/end entity events.

Note that skipped entities will be reported through the skippedEntity event, which is part of the ContentHandler interface.

Specified by:

startEntity in interface LexicalHandler

Parameters:

name - The name of the entity. If it is a parameter entity, the name will begin with '%'.

Throws:

SAXException - The application may raise an exception.

See Also:

endEntity(java.lang.String), DeclHandler.internalEntityDecl(java.lang.String, java.lang.String), DeclHandler.externalEntityDecl(java.lang.String, java.lang.String, java.lang.String)

endEntity

public void endEntity(java.lang.String name)
               throws SAXException

Report the end of an entity.

Specified by:

endEntity in interface LexicalHandler

Parameters:

name - The name of the entity that is ending.

Throws:

SAXException - The application may raise an exception.

See Also:

startEntity(java.lang.String)

startCDATA

public void startCDATA()
                throws SAXException

Report the start of a CDATA section.

The contents of the CDATA section will be reported through the regular characters event.

Specified by:

startCDATA in interface LexicalHandler

Throws:

SAXException - The application may raise an exception.

See Also:

endCDATA()

endCDATA

public void endCDATA()
              throws SAXException

Report the end of a CDATA section.

Specified by:

endCDATA in interface LexicalHandler

Throws:

SAXException - The application may raise an exception.

See Also:

startCDATA()

comment

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

Report an XML comment anywhere in the document.

This callback will be used for comments inside or outside the document element, including comments in the external DTD subset (if read).

Specified by:

comment in interface LexicalHandler

Parameters:

ch - An array holding the characters in the comment.

start - The starting position in the array.

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

Throws:

SAXException - The application may raise an exception.

elementDecl

public void elementDecl(java.lang.String name,
                        java.lang.String model)
                 throws SAXException

Report an element type declaration.

The content model will consist of the string "EMPTY", the string "ANY", or a parenthesised group, optionally followed by an occurrence indicator. The model will be normalized so that all whitespace is removed,and will include the enclosing parentheses.

Specified by:

elementDecl in interface DeclHandler

Parameters:

name - The element type name.

model - The content model as a normalized string.

Throws:

SAXException - The application may raise an exception.

attributeDecl

public void attributeDecl(java.lang.String eName,
                          java.lang.String aName,
                          java.lang.String type,
                          java.lang.String valueDefault,
                          java.lang.String value)
                   throws SAXException

Report an attribute type declaration.

Only the effective (first) declaration for an attribute will be reported. The type will be one of the strings "CDATA", "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY", "ENTITIES", or "NOTATION", or a parenthesized token group with the separator "|" and all whitespace removed.

Specified by:

attributeDecl in interface DeclHandler

Parameters:

eName - The name of the associated element.

aName - The name of the attribute.

type - A string representing the attribute type.

valueDefault - A string representing the attribute default ("#IMPLIED", "#REQUIRED", or "#FIXED") or null if none of these applies.

value - A string representing the attribute's default value, or null if there is none.

Throws:

SAXException - The application may raise an exception.

internalEntityDecl

public void internalEntityDecl(java.lang.String name,
                               java.lang.String value)
                        throws SAXException

Report an internal entity declaration.

Only the effective (first) declaration for each entity will be reported.

Specified by:

internalEntityDecl in interface DeclHandler

Parameters:

name - The name of the entity. If it is a parameter entity, the name will begin with '%'.

value - The replacement text of the entity.

Throws:

SAXException - The application may raise an exception.

See Also:

externalEntityDecl(java.lang.String, java.lang.String, java.lang.String), DTDHandler.unparsedEntityDecl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)

externalEntityDecl

public void externalEntityDecl(java.lang.String name,
                               java.lang.String publicId,
                               java.lang.String systemId)
                        throws SAXException

Report a parsed external entity declaration.

Only the effective (first) declaration for each entity will be reported.

Specified by:

externalEntityDecl in interface DeclHandler

Parameters:

name - The name of the entity. If it is a parameter entity, the name will begin with '%'.

publicId - The declared public identifier of the entity, or null if none was declared.

systemId - The declared system identifier of the entity.

Throws:

SAXException - The application may raise an exception.

See Also:

internalEntityDecl(java.lang.String, java.lang.String), DTDHandler.unparsedEntityDecl(java.lang.String, java.lang.String, java.lang.String, java.lang.String)