org.apache.xml.serializer

Class TreeWalker

java.lang.Object

org.apache.xml.serializer.TreeWalker

public final 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 a copy of the one in org.apache.xml.utils. It exists to cut the serializers dependancy on that package.

Usage:

**For internal use only**

Constructor Summary

Constructors

Constructor and Description
TreeWalker(ContentHandler ch)
TreeWalker(ContentHandler contentHandler, java.lang.String systemId) Constructor.

Method Summary

Methods

Modifier and Type	Method and Description
ContentHandler	getContentHandler() 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.

Methods inherited from class java.lang.Object

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

Constructor Detail

TreeWalker

public TreeWalker(ContentHandler ch)

TreeWalker

public TreeWalker(ContentHandler contentHandler,
          java.lang.String systemId)

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

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

SAXException

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

SAXException