org.apache.xml.utils
Class TreeWalker

java.lang.Object
  |
  +--org.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.

Usage:
**For advanced use only**

Constructor Summary
TreeWalker(ContentHandler contentHandler)
          Constructor.
TreeWalker(ContentHandler contentHandler, DOMHelper dh)
          Constructor.
TreeWalker(ContentHandler contentHandler, DOMHelper dh, java.lang.String systemId)
          Constructor.
 
Method Summary
 ContentHandler getContentHandler()
          Get the ContentHandler used for the tree walk.
 void setContentHandler(ContentHandler ch)
          Get the ContentHandler used for the tree walk.
 void traverse(Node pos)
          Perform a pre-order traversal non-recursive style.
 void traverse(Node pos, Node top)
          Perform a pre-order traversal non-recursive style.
 void traverseFragment(Node pos)
          Perform a pre-order traversal non-recursive style.
 
Methods inherited from class java.lang.Object
equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

TreeWalker

public TreeWalker(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(ContentHandler contentHandler,
                  DOMHelper dh)
Constructor.
Parameters:
contentHandler - The implemention of the contentHandler operation (toXMLString, digest, ...)

TreeWalker

public TreeWalker(ContentHandler contentHandler)
Constructor.
Parameters:
contentHandler - The implemention of the contentHandler operation (toXMLString, digest, ...)
Method Detail

getContentHandler

public ContentHandler getContentHandler()
Get the ContentHandler used for the tree walk.
Returns:
the ContentHandler used for the tree walk

setContentHandler

public void setContentHandler(ContentHandler ch)
Get the ContentHandler used for the tree walk.
Returns:
the ContentHandler used for the tree walk

traverse

public void traverse(Node pos)
              throws SAXException
Perform a pre-order traversal non-recursive style. Note that TreeWalker assumes that the subtree is intended to represent a complete (though not necessarily well-formed) document and, during a traversal, startDocument and endDocument will always be issued to the SAX listener.
Parameters:
pos - Node in the tree where to start traversal
Throws:
TransformerException -  

traverseFragment

public void traverseFragment(Node pos)
                      throws SAXException
Perform a pre-order traversal non-recursive style. In contrast to the traverse() method this method will not issue startDocument() and endDocument() events to the SAX listener.
Parameters:
pos - Node in the tree where to start traversal
Throws:
TransformerException -  

traverse

public void traverse(Node pos,
                     Node top)
              throws SAXException
Perform a pre-order traversal non-recursive style. Note that TreeWalker assumes that the subtree is intended to represent a complete (though not necessarily well-formed) document and, during a traversal, startDocument and endDocument will always be issued to the SAX listener.
Parameters:
pos - Node in the tree where to start traversal
top - Node in the tree where to end traversal
Throws:
TransformerException -  


Copyright 2006 Apache XML Project. All Rights Reserved.