Package org.apache.xml.serializer

Class TreeWalker

java.lang.Object
org.apache.xml.serializer.TreeWalker
public final class TreeWalker
extends 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.

  • Field Details

    • m_dh

      protected final DOM2Helper m_dh
      DomHelper for this TreeWalker

  • Constructor Details

    • TreeWalker

      public TreeWalker​(ContentHandler ch)

    • TreeWalker

      public TreeWalker​(ContentHandler contentHandler, String systemId)
      Constructor.
      Parameters:
      contentHandler - The implemention of the contentHandler operation (toXMLString, digest, ...)

  • Method Details

    • 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

    • startNode

      protected void startNode​(Node node) throws SAXException
      Start processing given node
      Parameters:
      node - Node to process
      Throws:
      SAXException

    • endNode

      protected void endNode​(Node node) throws SAXException
      End processing of given node
      Parameters:
      node - Node we just finished processing
      Throws:
      SAXException