org.dom4j.io
Class SAXWriter

java.lang.Object
  org.dom4j.io.SAXWriter

All Implemented Interfaces:

XMLReader

public class SAXWriter

extends Object

implements XMLReader

SAXWriter writes a DOM4J tree to a SAX ContentHandler.

Version:

$Revision: 1.24 $

Author:

James Strachan

Field Summary

protected static String	FEATURE_NAMESPACE_PREFIXES
protected static String	FEATURE_NAMESPACES
protected static String[]	LEXICAL_HANDLER_NAMES

Constructor Summary

SAXWriter()

SAXWriter(ContentHandler contentHandler)

SAXWriter(ContentHandler contentHandler, LexicalHandler lexicalHandler)

SAXWriter(ContentHandler contentHandler, LexicalHandler lexicalHandler, EntityResolver entityResolver)

Method Summary

protected AttributesImpl	addNamespaceAttribute(AttributesImpl attrs, Namespace namespace) If isDelcareNamespaceAttributes() is enabled then this method will add the given namespace declaration to the supplied attributes object, creating one if it does not exist.
protected void	checkForNullHandlers() Ensures non-null content handlers?
protected Attributes	createAttributes(Element element, Attributes namespaceAttributes)
protected void	documentLocator(Document document) The Locatoris only really useful when parsing a textual document as its main purpose is to identify the line and column number.
protected void	dtdHandler(Document document) We do not yet support DTD or XML Schemas so this method does nothing right now.
protected void	endDocument()
protected void	endElement(Element element)
protected void	endPrefixMapping(NamespaceStack stack, int stackSize) Fires a SAX endPrefixMapping event for all the namespaceStack which have gone out of scope
protected void	entityResolver(Document document)
ContentHandler	getContentHandler() DOCUMENT ME!
DTDHandler	getDTDHandler() DOCUMENT ME!
EntityResolver	getEntityResolver() DOCUMENT ME!
ErrorHandler	getErrorHandler() DOCUMENT ME!
boolean	getFeature(String name) Looks up the value of a feature.
LexicalHandler	getLexicalHandler() DOCUMENT ME!
Object	getProperty(String name) Gets the given SAX property
boolean	isDeclareNamespaceAttributes() Should namespace declarations be converted to "xmlns" attributes.
protected boolean	isIgnoreableNamespace(Namespace namespace, NamespaceStack namespaceStack) DOCUMENT ME!
void	parse(InputSource input) Parses an XML document.
void	parse(String systemId) This method is not supported.
void	setContentHandler(ContentHandler contentHandler) Sets the ContentHandler called when SAX events are raised
void	setDeclareNamespaceAttributes(boolean declareNamespaceAttrs) Sets whether namespace declarations should be exported as "xmlns" attributes or not.
void	setDTDHandler(DTDHandler handler) Sets the DTDHandler.
void	setEntityResolver(EntityResolver entityResolver) Sets the EntityResolver.
void	setErrorHandler(ErrorHandler errorHandler) Sets the ErrorHandler.
void	setFeature(String name, boolean value) This implementation does actually use any features but just stores them for later retrieval
void	setLexicalHandler(LexicalHandler lexicalHandler) Sets the LexicalHandler.
void	setProperty(String name, Object value) Sets the given SAX property
void	setXMLReader(XMLReader xmlReader) Sets the XMLReader used to write SAX events to
protected void	startDocument()
protected void	startElement(Element element, AttributesImpl namespaceAttributes)
protected AttributesImpl	startPrefixMapping(Element element, NamespaceStack namespaceStack) Fires a SAX startPrefixMapping event for all the namespaceStack which have just come into scope
void	write(CDATA cdata) Generates SAX events for the given CDATA
void	write(Comment comment) Generates SAX events for the given Comment
void	write(Document document) Generates SAX events for the given Document and all its content
void	write(Element element) Generates SAX events for the given Element and all its content
protected void	write(Element element, NamespaceStack namespaceStack)
void	write(Entity entity) Generates SAX events for the given Entity
void	write(Node node) A polymorphic method to write any Node to this SAX stream
void	write(ProcessingInstruction pi) Generates SAX events for the given ProcessingInstruction
void	write(String text) Generates SAX events for the given text
void	writeClose(Element element) Writes the closing tag of an Element
protected void	writeContent(Branch branch, NamespaceStack namespaceStack)
void	writeOpen(Element element) Writes the opening tag of an Element, including its Attributes but without its content.

Methods inherited from class java.lang.Object

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

Field Detail

LEXICAL_HANDLER_NAMES

protected static final String[] LEXICAL_HANDLER_NAMES

FEATURE_NAMESPACE_PREFIXES

protected static final String FEATURE_NAMESPACE_PREFIXES

See Also:

Constant Field Values

FEATURE_NAMESPACES

protected static final String FEATURE_NAMESPACES

See Also:

Constant Field Values

Constructor Detail

SAXWriter

public SAXWriter()

SAXWriter

public SAXWriter(ContentHandler contentHandler)

SAXWriter

public SAXWriter(ContentHandler contentHandler,
                 LexicalHandler lexicalHandler)

SAXWriter

public SAXWriter(ContentHandler contentHandler,
                 LexicalHandler lexicalHandler,
                 EntityResolver entityResolver)

Method Detail

write

public void write(Node node)
           throws SAXException

A polymorphic method to write any Node to this SAX stream

Parameters:

node - DOCUMENT ME!

Throws:

SAXException - DOCUMENT ME!

write

public void write(Document document)
           throws SAXException

Generates SAX events for the given Document and all its content

Parameters:

document - is the Document to parse

Throws:

SAXException - if there is a SAX error processing the events

write

public void write(Element element)
           throws SAXException

Generates SAX events for the given Element and all its content

Parameters:

element - is the Element to parse

Throws:

SAXException - if there is a SAX error processing the events

writeOpen

public void writeOpen(Element element)
               throws SAXException

Writes the opening tag of an Element, including its Attributes but without its content.

Parameters:

element - Element to output.

Throws:

SAXException - DOCUMENT ME!

writeClose

public void writeClose(Element element)
                throws SAXException

Writes the closing tag of an Element

Parameters:

element - Element to output.

Throws:

SAXException - DOCUMENT ME!

write

public void write(String text)
           throws SAXException

Generates SAX events for the given text

Parameters:

text - is the text to send to the SAX ContentHandler

Throws:

SAXException - if there is a SAX error processing the events

write

public void write(CDATA cdata)
           throws SAXException

Generates SAX events for the given CDATA

Parameters:

cdata - is the CDATA to parse

Throws:

SAXException - if there is a SAX error processing the events

write

public void write(Comment comment)
           throws SAXException

Generates SAX events for the given Comment

Parameters:

comment - is the Comment to parse

Throws:

SAXException - if there is a SAX error processing the events

write

public void write(Entity entity)
           throws SAXException

Generates SAX events for the given Entity

Parameters:

entity - is the Entity to parse

Throws:

SAXException - if there is a SAX error processing the events

write

public void write(ProcessingInstruction pi)
           throws SAXException

Generates SAX events for the given ProcessingInstruction

Parameters:

pi - is the ProcessingInstruction to parse

Throws:

SAXException - if there is a SAX error processing the events

isDeclareNamespaceAttributes

public boolean isDeclareNamespaceAttributes()

Should namespace declarations be converted to "xmlns" attributes. This property defaults to false as per the SAX specification. This property is set via the SAX feature "http://xml.org/sax/features/namespace-prefixes"

Returns:

DOCUMENT ME!

setDeclareNamespaceAttributes

public void setDeclareNamespaceAttributes(boolean declareNamespaceAttrs)

Sets whether namespace declarations should be exported as "xmlns" attributes or not. This property is set from the SAX feature "http://xml.org/sax/features/namespace-prefixes"

Parameters:

declareNamespaceAttrs - DOCUMENT ME!

getContentHandler

public ContentHandler getContentHandler()

DOCUMENT ME!

Specified by:

getContentHandler in interface XMLReader

Returns:

the ContentHandler called when SAX events are raised

setContentHandler

public void setContentHandler(ContentHandler contentHandler)

Sets the ContentHandler called when SAX events are raised

Specified by:

setContentHandler in interface XMLReader

Parameters:

contentHandler - is the ContentHandler called when SAX events are raised

getDTDHandler

public DTDHandler getDTDHandler()

DOCUMENT ME!

Specified by:

getDTDHandler in interface XMLReader

Returns:

the DTDHandler

setDTDHandler

public void setDTDHandler(DTDHandler handler)

Sets the DTDHandler.

Specified by:

setDTDHandler in interface XMLReader

Parameters:

handler - DOCUMENT ME!

getErrorHandler

public ErrorHandler getErrorHandler()

DOCUMENT ME!

Specified by:

getErrorHandler in interface XMLReader

Returns:

the ErrorHandler

setErrorHandler

public void setErrorHandler(ErrorHandler errorHandler)

Sets the ErrorHandler.

Specified by:

setErrorHandler in interface XMLReader

Parameters:

errorHandler - DOCUMENT ME!

getEntityResolver

public EntityResolver getEntityResolver()

DOCUMENT ME!

Specified by:

getEntityResolver in interface XMLReader

Returns:

the EntityResolver used when a Document contains a DTD

setEntityResolver

public void setEntityResolver(EntityResolver entityResolver)

Sets the EntityResolver.

Specified by:

setEntityResolver in interface XMLReader

Parameters:

entityResolver - is the EntityResolver

getLexicalHandler

public LexicalHandler getLexicalHandler()

DOCUMENT ME!

Returns:

the LexicalHandler used when a Document contains a DTD

setLexicalHandler

public void setLexicalHandler(LexicalHandler lexicalHandler)

Sets the LexicalHandler.

Parameters:

lexicalHandler - is the LexicalHandler

setXMLReader

public void setXMLReader(XMLReader xmlReader)

Sets the XMLReader used to write SAX events to

Parameters:

xmlReader - is the XMLReader

getFeature

public boolean getFeature(String name)
                   throws SAXNotRecognizedException,
                          SAXNotSupportedException

Looks up the value of a feature.

Specified by:

getFeature in interface XMLReader

Parameters:

name - DOCUMENT ME!

Returns:

DOCUMENT ME!

Throws:

SAXNotRecognizedException - DOCUMENT ME!

SAXNotSupportedException - DOCUMENT ME!

setFeature

public void setFeature(String name,
                       boolean value)
                throws SAXNotRecognizedException,
                       SAXNotSupportedException

This implementation does actually use any features but just stores them for later retrieval

Specified by:

setFeature in interface XMLReader

Parameters:

name - DOCUMENT ME!

value - DOCUMENT ME!

Throws:

SAXNotRecognizedException - DOCUMENT ME!

SAXNotSupportedException - DOCUMENT ME!

setProperty

public void setProperty(String name,
                        Object value)

Sets the given SAX property

Specified by:

setProperty in interface XMLReader

Parameters:

name - DOCUMENT ME!

value - DOCUMENT ME!

getProperty

public Object getProperty(String name)
                   throws SAXNotRecognizedException,
                          SAXNotSupportedException

Gets the given SAX property

Specified by:

getProperty in interface XMLReader

Parameters:

name - DOCUMENT ME!

Returns:

DOCUMENT ME!

Throws:

SAXNotRecognizedException - DOCUMENT ME!

SAXNotSupportedException - DOCUMENT ME!

parse

public void parse(String systemId)
           throws SAXNotSupportedException

This method is not supported.

Specified by:

parse in interface XMLReader

Parameters:

systemId - DOCUMENT ME!

Throws:

SAXNotSupportedException - DOCUMENT ME!

parse

public void parse(InputSource input)
           throws SAXException

Parses an XML document. This method can only accept DocumentInputSource inputs otherwise a SAXNotSupportedExceptionexception is thrown.

Specified by:

parse in interface XMLReader

Parameters:

input - DOCUMENT ME!

Throws:

SAXException - DOCUMENT ME!

SAXNotSupportedException - if the input source is not wrapping a dom4j document

writeContent

protected void writeContent(Branch branch,
                            NamespaceStack namespaceStack)
                     throws SAXException

Throws:

SAXException

documentLocator

protected void documentLocator(Document document)
                        throws SAXException

The Locatoris only really useful when parsing a textual document as its main purpose is to identify the line and column number. Since we are processing an in memory tree which will probably have its line number information removed, we'll just use -1 for the line and column numbers.

Parameters:

document - DOCUMENT ME!

Throws:

SAXException - DOCUMENT ME!

entityResolver

protected void entityResolver(Document document)
                       throws SAXException

Throws:

SAXException

dtdHandler

protected void dtdHandler(Document document)
                   throws SAXException

We do not yet support DTD or XML Schemas so this method does nothing right now.

Parameters:

document - DOCUMENT ME!

Throws:

SAXException - DOCUMENT ME!

startDocument

protected void startDocument()
                      throws SAXException

Throws:

SAXException

endDocument

protected void endDocument()
                    throws SAXException

Throws:

SAXException

write

protected void write(Element element,
                     NamespaceStack namespaceStack)
              throws SAXException

Throws:

SAXException

startPrefixMapping

protected AttributesImpl startPrefixMapping(Element element,
                                            NamespaceStack namespaceStack)
                                     throws SAXException

Fires a SAX startPrefixMapping event for all the namespaceStack which have just come into scope

Parameters:

element - DOCUMENT ME!

namespaceStack - DOCUMENT ME!

Returns:

DOCUMENT ME!

Throws:

SAXException - DOCUMENT ME!

endPrefixMapping

protected void endPrefixMapping(NamespaceStack stack,
                                int stackSize)
                         throws SAXException

Fires a SAX endPrefixMapping event for all the namespaceStack which have gone out of scope

Parameters:

stack - DOCUMENT ME!

stackSize - DOCUMENT ME!

Throws:

SAXException - DOCUMENT ME!

startElement

protected void startElement(Element element,
                            AttributesImpl namespaceAttributes)
                     throws SAXException

Throws:

SAXException

endElement

protected void endElement(Element element)
                   throws SAXException

Throws:

SAXException

createAttributes

protected Attributes createAttributes(Element element,
                                      Attributes namespaceAttributes)
                               throws SAXException

Throws:

SAXException

addNamespaceAttribute

protected AttributesImpl addNamespaceAttribute(AttributesImpl attrs,
                                               Namespace namespace)

If isDelcareNamespaceAttributes() is enabled then this method will add the given namespace declaration to the supplied attributes object, creating one if it does not exist.

Parameters:

attrs - DOCUMENT ME!

namespace - DOCUMENT ME!

Returns:

DOCUMENT ME!

isIgnoreableNamespace

protected boolean isIgnoreableNamespace(Namespace namespace,
                                        NamespaceStack namespaceStack)

DOCUMENT ME!

Parameters:

namespace - DOCUMENT ME!

namespaceStack - DOCUMENT ME!

Returns:

true if the given namespace is an ignorable namespace (such as Namespace.NO_NAMESPACE or Namespace.XML_NAMESPACE) or if the namespace has already been declared in the current scope

checkForNullHandlers

protected void checkForNullHandlers()

Ensures non-null content handlers?