weblogic.apache.xml.utils
Class TreeWalker

java.lang.Object
  |
  +--weblogic.apache.xml.utils.TreeWalker

public class TreeWalker

extends java.lang.Object

This class does a pre-order walk of the DOM tree, calling a ContentHandler interface as it goes.

This class is based on an implementation from the Apache XML Project. In future releases the XML parser, XSLT processor, and associated classes will likely be updated to be based on a later version of the Apache implementations. Since Apache does not guarantee backwards compatibility between versions of their software, we cannot guarantee backwards compatibility of any of the classes contained in the weblogic.apache package or sub-packages.

Field Summary

protected DOMHelper

m_dh DomHelper for this TreeWalker

Constructor Summary

TreeWalker(org.xml.sax.ContentHandler contentHandler)
Constructor.

TreeWalker(org.xml.sax.ContentHandler contentHandler, DOMHelper dh)
Constructor.

TreeWalker(org.xml.sax.ContentHandler contentHandler, DOMHelper dh, java.lang.String systemId)
Constructor.

Method Summary

protected void	endNode(org.w3c.dom.Node node) End processing of given node
org.xml.sax.ContentHandler	getContentHandler() Get the ContentHandler used for the tree walk.
void	setContentHandler(org.xml.sax.ContentHandler ch) Get the ContentHandler used for the tree walk.
protected void	startNode(org.w3c.dom.Node node) Start processing given node
void	traverse(org.w3c.dom.Node pos) Perform a pre-order traversal non-recursive style.
void	traverse(org.w3c.dom.Node pos, org.w3c.dom.Node top) Perform a pre-order traversal non-recursive style.

Methods inherited from class java.lang.Object

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

Field Detail

m_dh

protected DOMHelper m_dh

DomHelper for this TreeWalker

Constructor Detail

TreeWalker

public TreeWalker(org.xml.sax.ContentHandler contentHandler,
                  DOMHelper dh,
                  java.lang.String systemId)

Constructor.

Parameters:

contentHandler - The implemention of the

systemId - System identifier for the document. contentHandler operation (toXMLString, digest, ...)

TreeWalker

public TreeWalker(org.xml.sax.ContentHandler contentHandler,
                  DOMHelper dh)

Constructor.

Parameters:

contentHandler - The implemention of the contentHandler operation (toXMLString, digest, ...)

TreeWalker

public TreeWalker(org.xml.sax.ContentHandler contentHandler)

Constructor.

Parameters:

contentHandler - The implemention of the contentHandler operation (toXMLString, digest, ...)

Method Detail

getContentHandler

public org.xml.sax.ContentHandler getContentHandler()

Get the ContentHandler used for the tree walk.

Returns:

the ContentHandler used for the tree walk

setContentHandler

public void setContentHandler(org.xml.sax.ContentHandler ch)

Get the ContentHandler used for the tree walk.

Returns:

the ContentHandler used for the tree walk

traverse

public void traverse(org.w3c.dom.Node pos)
              throws org.xml.sax.SAXException

Perform a pre-order traversal non-recursive style.

Parameters:

pos - Node in the tree where to start traversal

Throws:

TransformerException -

traverse

public void traverse(org.w3c.dom.Node pos,
                     org.w3c.dom.Node top)
              throws org.xml.sax.SAXException

Perform a pre-order traversal non-recursive style.

Parameters:

pos - Node in the tree where to start traversal

top - Node in the tree where to end traversal

Throws:

TransformerException -

startNode

protected void startNode(org.w3c.dom.Node node)
                  throws org.xml.sax.SAXException

Start processing given node

Parameters:

node - Node to process

Throws:

org.xml.sax.SAXException -

endNode

protected void endNode(org.w3c.dom.Node node)
                throws org.xml.sax.SAXException

End processing of given node

Parameters:

node - Node we just finished processing

Throws:

org.xml.sax.SAXException -