Class AbstractStAXStreamProcessor

java.lang.Object

org.jdom2.output.support.AbstractOutputProcessor

org.jdom2.output.support.AbstractStAXStreamProcessor

All Implemented Interfaces:

StAXStreamProcessor

public abstract class AbstractStAXStreamProcessor
extends AbstractOutputProcessor
implements StAXStreamProcessor

This class provides a concrete implementation of StAXStreamProcessor for supporting the StAXStreamOutputter.

Overview

This class is marked abstract even though all methods are fully implemented. The process*(...) methods are public because they match the StAXStreamProcessor interface but the remaining methods are all protected.

People who want to create a custom StAXStreamProcessor for StAXStreamOutputter are able to extend this class and modify any functionality they want. Before sub-classing this you should first check to see if the Format class can get you the results you want.

Subclasses of this should have reentrant methods. This is easiest to accomplish simply by not allowing any instance fields. If your sub-class has an instance field/variable, then it's probably broken.

The Stacks

One significant feature of this implementation is that it creates and maintains both a NamespaceStack and FormatStack that are managed in the printElement(XMLStreamWriter, FormatStack, NamespaceStack, Element) method. The stacks are pushed and popped in that method only. They significantly improve the performance and readability of the code.

The NamespaceStack is only sent through to the printElement(XMLStreamWriter, FormatStack, NamespaceStack, Element) and printContent(XMLStreamWriter, FormatStack, NamespaceStack, Walker) methods, but the FormatStack is pushed through to all print* Methods.

An interesting read for people using this class: Apache Axiom notes on setPrefix().

Since:

JDOM2

Author:

Rolf Lear

See Also:

• StAXStreamOutputter
• StAXStreamProcessor

Constructor Summary

Constructors

Constructor	Description
AbstractStAXStreamProcessor()

Method Summary

Modifier and Type	Method	Description
protected void	printAttribute(XMLStreamWriter out, FormatStack fstack, Attribute attribute)	This will handle printing of an Attribute.
protected void	printCDATA(XMLStreamWriter out, FormatStack fstack, CDATA cdata)	This will handle printing of a CDATA.
protected void	printComment(XMLStreamWriter out, FormatStack fstack, Comment comment)	This will handle printing of a Comment.
protected void	printContent(XMLStreamWriter out, FormatStack fstack, NamespaceStack nstack, Walker walker)	This will handle printing of a List of Content.
protected void	printDocType(XMLStreamWriter out, FormatStack fstack, DocType docType)	This will handle printing of a DocType.
protected void	printDocument(XMLStreamWriter out, FormatStack fstack, NamespaceStack nstack, Document doc)	This will handle printing of a Document.
protected void	printElement(XMLStreamWriter out, FormatStack fstack, NamespaceStack nstack, Element element)	This will handle printing of an Element.
protected void	printEntityRef(XMLStreamWriter out, FormatStack fstack, EntityRef entity)	This will handle printing of an EntityRef.
protected void	printNamespace(XMLStreamWriter out, FormatStack fstack, Namespace ns)	This will handle printing of any needed Namespace declarations.
protected void	printProcessingInstruction(XMLStreamWriter out, FormatStack fstack, ProcessingInstruction pi)	This will handle printing of a ProcessingInstruction.
protected void	printText(XMLStreamWriter out, FormatStack fstack, Text text)	This will handle printing of a Text.
void	process(XMLStreamWriter out, Format format, List<? extends Content> list)	This will handle printing out a list of nodes.
void	process(XMLStreamWriter out, Format format, CDATA cdata)	Print out a CDATA node.
void	process(XMLStreamWriter out, Format format, Comment comment)	Print out a Comment.
void	process(XMLStreamWriter out, Format format, DocType doctype)	Print out the DocType.
void	process(XMLStreamWriter out, Format format, Document doc)	This will print the Document to the given XMLStreamWriter.
void	process(XMLStreamWriter out, Format format, Element element)	Print out an Element, including its Attributes, and all contained (child) elements, etc.
void	process(XMLStreamWriter out, Format format, EntityRef entity)	Print out a EntityRef.
void	process(XMLStreamWriter out, Format format, ProcessingInstruction pi)	Print out a ProcessingInstruction.
void	process(XMLStreamWriter out, Format format, Text text)	Print out a Text node.

Methods inherited from class AbstractOutputProcessor

buildWalker

Methods inherited from class Object

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

Constructor Details

AbstractStAXStreamProcessor

public AbstractStAXStreamProcessor()

Method Details

process

public void process(XMLStreamWriter out,
 Format format,
 Document doc)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

This will print the Document to the given XMLStreamWriter.

Warning: using your own XMLStreamWriter may cause the outputter's preferred character encoding to be ignored. If you use encodings other than UTF-8, we recommend using the method that takes an OutputStream instead.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

doc - Document to format.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 DocType doctype)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

Print out the DocType.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

doctype - DocType to output.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 Element element)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

Print out an Element, including its Attributes, and all contained (child) elements, etc.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

element - Element to output.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 List<? extends Content> list)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

This will handle printing out a list of nodes. This can be useful for printing the content of an element that contains HTML, like "<description>JDOM is <b>fun>!</description>".

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

list - List of nodes.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 CDATA cdata)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

Print out a CDATA node.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

cdata - CDATA to output.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 Text text)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

Print out a Text node. Performs the necessary entity escaping and whitespace stripping.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

text - Text to output.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 Comment comment)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

Print out a Comment.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

comment - Comment to output.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 ProcessingInstruction pi)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

Print out a ProcessingInstruction.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

pi - ProcessingInstruction to output.

Throws:

XMLStreamException - if there's any problem writing.

process

public void process(XMLStreamWriter out,
 Format format,
 EntityRef entity)
             throws XMLStreamException

Description copied from interface: StAXStreamProcessor

Print out a EntityRef.

Specified by:

process in interface StAXStreamProcessor

Parameters:

out - XMLStreamWriter to use.

format - Format instance specifying output style

entity - EntityRef to output.

Throws:

XMLStreamException - if there's any problem writing.

printDocument

protected void printDocument(XMLStreamWriter out,
 FormatStack fstack,
 NamespaceStack nstack,
 Document doc)
                      throws XMLStreamException

This will handle printing of a Document.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

nstack - the NamespaceStack

doc - Document to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printDocType

protected void printDocType(XMLStreamWriter out,
 FormatStack fstack,
 DocType docType)
                     throws XMLStreamException

This will handle printing of a DocType.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

docType - DocType to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printProcessingInstruction

protected void printProcessingInstruction(XMLStreamWriter out,
 FormatStack fstack,
 ProcessingInstruction pi)
                                   throws XMLStreamException

This will handle printing of a ProcessingInstruction.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

pi - ProcessingInstruction to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printComment

protected void printComment(XMLStreamWriter out,
 FormatStack fstack,
 Comment comment)
                     throws XMLStreamException

This will handle printing of a Comment.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

comment - Comment to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printEntityRef

protected void printEntityRef(XMLStreamWriter out,
 FormatStack fstack,
 EntityRef entity)
                       throws XMLStreamException

This will handle printing of an EntityRef.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

entity - EntotyRef to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printCDATA

protected void printCDATA(XMLStreamWriter out,
 FormatStack fstack,
 CDATA cdata)
                   throws XMLStreamException

This will handle printing of a CDATA.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

cdata - CDATA to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printText

protected void printText(XMLStreamWriter out,
 FormatStack fstack,
 Text text)
                  throws XMLStreamException

This will handle printing of a Text.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

text - Text to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printElement

protected void printElement(XMLStreamWriter out,
 FormatStack fstack,
 NamespaceStack nstack,
 Element element)
                     throws XMLStreamException

This will handle printing of an Element.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

nstack - the NamespaceStack

element - Element to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printContent

protected void printContent(XMLStreamWriter out,
 FormatStack fstack,
 NamespaceStack nstack,
 Walker walker)
                     throws XMLStreamException

This will handle printing of a List of Content.

Parameters:

out - XMLStreamWriter to use.

fstack - the FormatStack

nstack - the NamespaceStack

walker - Walker of Content to write.

Throws:

XMLStreamException - if the destination XMLStreamWriter fails

printNamespace

protected void printNamespace(XMLStreamWriter out,
 FormatStack fstack,
 Namespace ns)
                       throws XMLStreamException

This will handle printing of any needed Namespace declarations.

Parameters:

out - XMLStreamWriter to use.

fstack - The current FormatStack

ns - Namespace to print definition of

Throws:

XMLStreamException - if the output fails

printAttribute

protected void printAttribute(XMLStreamWriter out,
 FormatStack fstack,
 Attribute attribute)
                       throws XMLStreamException

This will handle printing of an Attribute.

Parameters:

out - XMLStreamWriter to use.

fstack - The current FormatStack

attribute - Attribute to output

Throws:

XMLStreamException - if the output fails