## 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
`TreeWalker(org.xml.sax.ContentHandler ch)`
`TreeWalker(org.xml.sax.ContentHandler contentHandler, java.lang.String systemId)` Constructor.

Method Summary
`org.xml.sax.ContentHandler` `getContentHandler()` Get the ContentHandler used for the tree walk.
`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
`equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### TreeWalker

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

### TreeWalker

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

  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

### traverse

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

### 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. 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`
    `org.xml.sax.SAXException`

Copyright © 2005 Apache XML Project. All Rights Reserved.