java/src/org/apache/qetest/dtm/TestDTMTraverser.java - xalan-test - Git at Google

 /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements. See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership. The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the  "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
  * distributed under the License is distributed on an "AS IS" BASIS,
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
 /*
  * $Id$
  */
 package org.apache.qetest.dtm;

 import java.io.StringReader;

 import javax.xml.transform.Source;
 import javax.xml.transform.stream.StreamSource;

 import org.apache.xml.dtm.Axis;
 import org.apache.xml.dtm.DTM;
 import org.apache.xml.dtm.DTMAxisTraverser;
 import org.apache.xml.dtm.DTMManager;
 import org.apache.xml.dtm.ref.DTMManagerDefault;
 import org.apache.xpath.objects.XMLStringFactoryImpl;


 /**
  * Unit test for DTMManager/DTM
  *
  * Loads an XML document from a file (or, if no filename is supplied,
  * an internal string), then dumps its contents. Replaces the old
  * version, which was specific to the ultra-compressed implementation.
  * (Which, by the way, we probably ought to revisit as part of our ongoing
  * speed/size performance evaluation.)
  *
  * %REVIEW% Extend to test DOM2DTM, incremental, DOM view of the DTM,
  * whitespace-filtered, indexed/nonindexed, ...
  * */
 public class TestDTMTraverser {

 /*class myWSStripper implements DTMWSFilter {

 void myWWStripper()
   { }

 public short getShouldStripSpace(int elementHandle, DTM dtm)
   {
  	return DTMWSFilter.STRIP;
   }

 }
 */
 static final String[] TYPENAME=
   { "NULL",
     "ELEMENT",
     "ATTRIBUTE",
     "TEXT",
     "CDATA_SECTION",
     "ENTITY_REFERENCE",
     "ENTITY",
     "PROCESSING_INSTRUCTION",
     "COMMENT",
     "DOCUMENT",
     "DOCUMENT_TYPE",
     "DOCUMENT_FRAGMENT",
     "NOTATION",
     "NAMESPACE"
   };

   public static void main(String argv[])
   {
   	System.out.println("\nHELLO THERE AND WELCOME TO THE WACKY WORLD OF TRAVERSERS \n");
     try
     {
 		// Pick our input source
 		Source source=null;
 		if(argv.length<1)
 		{
 			String defaultSource=
  		"<?xml version=\"1.0\"?>\n"+
  		"<Document xmlns:d=\"www.d.com\" a1=\"hello\" a2=\"goodbye\">"+
  		"<!-- Default test document -->"+
  		"<?api a1=\"yes\" a2=\"no\"?>"+
  		"<A><!-- A Subtree --><B><C><D><E><F xmlns:f=\"www.f.com\" a1=\"down\" a2=\"up\"/></E></D></C></B></A>"+
  		"<Aa/><Ab/><Ac><Ac1/></Ac>"+
  		"<Ad xmlns:Ad=\"www.Ad.com\" xmlns:y=\"www.y.com\" xmlns:z=\"www.z.com\">"+
  		"<Ad1/></Ad>"+
  		"</Document>";

 			source=new StreamSource(new StringReader(defaultSource));
 		}
 		else if (argv.length>1 &&  "X".equalsIgnoreCase(argv[1]))
 		{
 			// XNI stream startup goes here
 			// Remember to perform Schema validation, to obtain PSVI annotations
 		}
 		else
 		{
 			// Read from a URI via whatever mechanism the DTMManager prefers
 			source=new StreamSource(argv[0]);
 		}

       // Get a DTM manager, and ask it to load the DTM "uniquely",
       // with no whitespace filtering, nonincremental, but _with_
       // indexing (a fairly common case, and avoids the special
       // mode used for RTF DTMs).

 	  // For testing with some of David Marston's files I do want to strip whitespace.
 	  dtmWSStripper stripper = new dtmWSStripper();

       DTMManager manager= new DTMManagerDefault().newInstance(new XMLStringFactoryImpl());
       DTM dtm=manager.getDTM(source, true, stripper, false, true);

 	  // Get various nodes to use as context nodes.
 	  int dtmRoot = dtm.getDocument();					// #document
 	  String dtmRootName = dtm.getNodeName(dtmRoot);	// Used for output
 	  int DNode = dtm.getFirstChild(dtmRoot);			// <Document>
 	  String DNodeName = dtm.getNodeName(DNode);
 	  int CNode = dtm.getFirstChild(DNode);				// <Comment>
 	  int PINode = dtm.getNextSibling(CNode);			// <PI>
 	  int ANode = dtm.getNextSibling(PINode);			// <A>
 	  String ANodeName = dtm.getNodeName(ANode);
 	  int lastNode = 0;


 	  // Get a traverser for Child:: axis.
 	  System.out.println("\n#### CHILD from "+"<"+DNodeName+">");
       DTMAxisTraverser at = dtm.getAxisTraverser(Axis.CHILD);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(DNode); DTM.NULL != atNode;
               atNode = at.next(DNode, atNode))
 		{  printNode(dtm, atNode, " ");
 		   lastNode = atNode;
 		}

 	  // Get a traverser for Parent:: axis.
 	  String lastNodeName = dtm.getNodeName(lastNode);
 	  System.out.println("\n#### PARENT from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.PARENT);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		  printNode(dtm, atNode, " ");

 	  // Get a from Self:: axis.
 	  System.out.println("\n#### SELF from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.SELF);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		  printNode(dtm, atNode, " ");

 	  // Get a traverser for NameSpaceDecls:: axis.
 	  System.out.println("\n#### NAMESPACEDECLS from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.NAMESPACEDECLS);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		  printNode(dtm, atNode, " ");

 	  // Get a traverser for Namespace:: axis.
 	  System.out.println("\n#### NAMESPACE from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.NAMESPACE);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		  printNode(dtm, atNode, " ");

 	  // Get a traverser for Preceding:: axis.
 	  System.out.println("\n#### PRECEDING from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.PRECEDING);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for PRECEDING-SIBLING:: axis.
 	  System.out.println("\n#### PRECEDINGSIBLING from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.PRECEDINGSIBLING);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for PRECEDINGANDANCESTOR:: axis.
 	  System.out.println("\n#### PRECEDINGANDANCESTOR from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.PRECEDINGANDANCESTOR);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for Attribute:: axis.
 	  System.out.println("\n#### ATTRIBUTE from "+"<"+DNodeName+">");
       at = dtm.getAxisTraverser(Axis.ATTRIBUTE);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(DNode); DTM.NULL != atNode;
               atNode = at.next(DNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for Following:: axis.
 	  System.out.println("\n#### FOLLOWING from "+"<"+ANodeName+">");
       at = dtm.getAxisTraverser(Axis.FOLLOWING);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(ANode); DTM.NULL != atNode;
               atNode = at.next(ANode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for FollowingSibling:: axis.
 	  System.out.println("\n#### FOLLOWINGSIBLING from "+"<"+ANodeName+">");
       at = dtm.getAxisTraverser(Axis.FOLLOWINGSIBLING);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(ANode); DTM.NULL != atNode;
               atNode = at.next(ANode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for  DESCENDANT:: axis.
 	  System.out.println("\n#### DESCENDANT from "+"<"+ANodeName+">");
       at = dtm.getAxisTraverser(Axis.DESCENDANT);

 	  // Traverse the axis and print out node info.
 	  for (int atNode = at.first(ANode); DTM.NULL != atNode;
               atNode = at.next(ANode, atNode))
 		  printNode(dtm, atNode, " ");


 	  // Get a traverser for  DESCENDANTORSELF:: axis.
 	  System.out.println("\n#### DESCENDANT-OR-SELF from "+"<"+ANodeName+">");
       at = dtm.getAxisTraverser(Axis.DESCENDANTORSELF);

 	  // Traverse the axis and print out node info.
 	  for (int atNode = at.first(ANode); DTM.NULL != atNode;
               atNode = at.next(ANode, atNode))
 		{
 			printNode(dtm, atNode, " ");
 			lastNode = atNode;
 		}

 	  // Get a traverser for ANCESTOR:: axis.
 	  lastNodeName = dtm.getNodeName(lastNode);
 	  System.out.println("\n#### ANCESTOR from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.ANCESTOR);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for ANCESTORORSELF:: axis.
 	  System.out.println("\n#### ANCESTOR-OR-SELF from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.ANCESTORORSELF);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for ALLFROMNODE:: axis.
 	  System.out.println("\n#### ALL-FROM-NODE from "+"<"+lastNodeName+">");
       at = dtm.getAxisTraverser(Axis.ALLFROMNODE);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // ABSOLUTE AXIS TESTS
 	  // These next axis are all Absolute. They all default to the root of the dtm
 	  // tree,  regardless of what we call first() with.
 	  // Get a traverser for ALL:: axis.
 	  System.out.println("\n#### ALL(absolute) from "+"<"+dtmRootName+">");
       at = dtm.getAxisTraverser(Axis.ALL);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for DESCENDANTSFROMROOT:: axis.
 	  System.out.println("\n#### DESCENDANTSFROMROOT(absolute) from "+"<"+dtmRootName+">");
       at = dtm.getAxisTraverser(Axis.DESCENDANTSFROMROOT);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

 	  // Get a traverser for DESCENDANTSORSELFFROMROOT:: axis.
 	  System.out.println("\n#### DESCENDANTSORSELFFROMROOT(absolute) from "+"<"+dtmRootName+">");
       at = dtm.getAxisTraverser(Axis.DESCENDANTSORSELFFROMROOT);

 	  // Traverse the axis and print out node info.
       for (int atNode = at.first(lastNode); DTM.NULL != atNode;
               atNode = at.next(lastNode, atNode))
 		printNode(dtm, atNode, " ");

     }
     catch(Exception e)
       {
         e.printStackTrace();
       }
   }

   static void printNode(DTM dtm,int nodeHandle,String indent)
   {
     // Briefly display this node
     // Don't bother displaying namespaces or attrs; we do that at the
     // next level up.
     // %REVIEW% Add namespace info, type info, ...

     // Formatting hack -- suppress quotes when value is null, to distinguish
     // it from "null".
     String value=dtm.getNodeValue(nodeHandle);
     String vq=(value==null) ? "" : "\"";

     // Skip outputing of text nodes. In most cases they clutter the output,
 	// besides I'm only interested in the elemental structure of the dtm.
     if( TYPENAME[dtm.getNodeType(nodeHandle)] != "TEXT" )
 	{
     	System.out.println(indent+
 		       +nodeHandle+": "+
 		       TYPENAME[dtm.getNodeType(nodeHandle)]+" "+
 			   dtm.getNodeName(nodeHandle)+" "+
 			   " Level=" + dtm.getLevel(nodeHandle)+" "+
 		       "\tValue=" + vq + value + vq
 		       );
 	}
   }

 }
	/*
	* Licensed to the Apache Software Foundation (ASF) under one
	* or more contributor license agreements. See the NOTICE file
	* distributed with this work for additional information
	* regarding copyright ownership. The ASF licenses this file
	* to you under the Apache License, Version 2.0 (the "License");
	* you may not use this file except in compliance with the License.
	* You may obtain a copy of the License at
	*
	* http://www.apache.org/licenses/LICENSE-2.0
	*
	* Unless required by applicable law or agreed to in writing, software
	* distributed under the License is distributed on an "AS IS" BASIS,
	* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
	* See the License for the specific language governing permissions and
	* limitations under the License.
	*/
	/*
	* $Id$
	*/
	package org.apache.qetest.dtm;

	import java.io.StringReader;

	import javax.xml.transform.Source;
	import javax.xml.transform.stream.StreamSource;

	import org.apache.xml.dtm.Axis;
	import org.apache.xml.dtm.DTM;
	import org.apache.xml.dtm.DTMAxisTraverser;
	import org.apache.xml.dtm.DTMManager;
	import org.apache.xml.dtm.ref.DTMManagerDefault;
	import org.apache.xpath.objects.XMLStringFactoryImpl;


	/**
	* Unit test for DTMManager/DTM
	*
	* Loads an XML document from a file (or, if no filename is supplied,
	* an internal string), then dumps its contents. Replaces the old
	* version, which was specific to the ultra-compressed implementation.
	* (Which, by the way, we probably ought to revisit as part of our ongoing
	* speed/size performance evaluation.)
	*
	* %REVIEW% Extend to test DOM2DTM, incremental, DOM view of the DTM,
	* whitespace-filtered, indexed/nonindexed, ...
	* */
	public class TestDTMTraverser {

	/*class myWSStripper implements DTMWSFilter {

	void myWWStripper()
	{ }

	public short getShouldStripSpace(int elementHandle, DTM dtm)
	{
	return DTMWSFilter.STRIP;
	}

	}
	*/
	static final String[] TYPENAME=
	{ "NULL",
	"ELEMENT",
	"ATTRIBUTE",
	"TEXT",
	"CDATA_SECTION",
	"ENTITY_REFERENCE",
	"ENTITY",
	"PROCESSING_INSTRUCTION",
	"COMMENT",
	"DOCUMENT",
	"DOCUMENT_TYPE",
	"DOCUMENT_FRAGMENT",
	"NOTATION",
	"NAMESPACE"
	};

	public static void main(String argv[])
	{
	System.out.println("\nHELLO THERE AND WELCOME TO THE WACKY WORLD OF TRAVERSERS \n");
	try
	{
	// Pick our input source
	Source source=null;
	if(argv.length<1)
	{
	String defaultSource=
	"<?xml version=\"1.0\"?>\n"+
	"<Document xmlns:d=\"www.d.com\" a1=\"hello\" a2=\"goodbye\">"+
	"<!-- Default test document -->"+
	"<?api a1=\"yes\" a2=\"no\"?>"+
	"<A><!-- A Subtree --><B><C><D><E><F xmlns:f=\"www.f.com\" a1=\"down\" a2=\"up\"/></E></D></C></B></A>"+
	"<Aa/><Ab/><Ac><Ac1/></Ac>"+
	"<Ad xmlns:Ad=\"www.Ad.com\" xmlns:y=\"www.y.com\" xmlns:z=\"www.z.com\">"+
	"<Ad1/></Ad>"+
	"</Document>";

	source=new StreamSource(new StringReader(defaultSource));
	}
	else if (argv.length>1 && "X".equalsIgnoreCase(argv[1]))
	{
	// XNI stream startup goes here
	// Remember to perform Schema validation, to obtain PSVI annotations
	}
	else
	{
	// Read from a URI via whatever mechanism the DTMManager prefers
	source=new StreamSource(argv[0]);
	}

	// Get a DTM manager, and ask it to load the DTM "uniquely",
	// with no whitespace filtering, nonincremental, but _with_
	// indexing (a fairly common case, and avoids the special
	// mode used for RTF DTMs).

	// For testing with some of David Marston's files I do want to strip whitespace.
	dtmWSStripper stripper = new dtmWSStripper();

	DTMManager manager= new DTMManagerDefault().newInstance(new XMLStringFactoryImpl());
	DTM dtm=manager.getDTM(source, true, stripper, false, true);

	// Get various nodes to use as context nodes.
	int dtmRoot = dtm.getDocument(); // #document
	String dtmRootName = dtm.getNodeName(dtmRoot); // Used for output
	int DNode = dtm.getFirstChild(dtmRoot); // <Document>
	String DNodeName = dtm.getNodeName(DNode);
	int CNode = dtm.getFirstChild(DNode); // <Comment>
	int PINode = dtm.getNextSibling(CNode); // <PI>
	int ANode = dtm.getNextSibling(PINode); // <A>
	String ANodeName = dtm.getNodeName(ANode);
	int lastNode = 0;


	// Get a traverser for Child:: axis.
	System.out.println("\n#### CHILD from "+"<"+DNodeName+">");
	DTMAxisTraverser at = dtm.getAxisTraverser(Axis.CHILD);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(DNode); DTM.NULL != atNode;
	atNode = at.next(DNode, atNode))
	{ printNode(dtm, atNode, " ");
	lastNode = atNode;
	}

	// Get a traverser for Parent:: axis.
	String lastNodeName = dtm.getNodeName(lastNode);
	System.out.println("\n#### PARENT from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.PARENT);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a from Self:: axis.
	System.out.println("\n#### SELF from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.SELF);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for NameSpaceDecls:: axis.
	System.out.println("\n#### NAMESPACEDECLS from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.NAMESPACEDECLS);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for Namespace:: axis.
	System.out.println("\n#### NAMESPACE from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.NAMESPACE);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for Preceding:: axis.
	System.out.println("\n#### PRECEDING from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.PRECEDING);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for PRECEDING-SIBLING:: axis.
	System.out.println("\n#### PRECEDINGSIBLING from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.PRECEDINGSIBLING);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for PRECEDINGANDANCESTOR:: axis.
	System.out.println("\n#### PRECEDINGANDANCESTOR from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.PRECEDINGANDANCESTOR);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for Attribute:: axis.
	System.out.println("\n#### ATTRIBUTE from "+"<"+DNodeName+">");
	at = dtm.getAxisTraverser(Axis.ATTRIBUTE);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(DNode); DTM.NULL != atNode;
	atNode = at.next(DNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for Following:: axis.
	System.out.println("\n#### FOLLOWING from "+"<"+ANodeName+">");
	at = dtm.getAxisTraverser(Axis.FOLLOWING);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(ANode); DTM.NULL != atNode;
	atNode = at.next(ANode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for FollowingSibling:: axis.
	System.out.println("\n#### FOLLOWINGSIBLING from "+"<"+ANodeName+">");
	at = dtm.getAxisTraverser(Axis.FOLLOWINGSIBLING);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(ANode); DTM.NULL != atNode;
	atNode = at.next(ANode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for DESCENDANT:: axis.
	System.out.println("\n#### DESCENDANT from "+"<"+ANodeName+">");
	at = dtm.getAxisTraverser(Axis.DESCENDANT);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(ANode); DTM.NULL != atNode;
	atNode = at.next(ANode, atNode))
	printNode(dtm, atNode, " ");


	// Get a traverser for DESCENDANTORSELF:: axis.
	System.out.println("\n#### DESCENDANT-OR-SELF from "+"<"+ANodeName+">");
	at = dtm.getAxisTraverser(Axis.DESCENDANTORSELF);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(ANode); DTM.NULL != atNode;
	atNode = at.next(ANode, atNode))
	{
	printNode(dtm, atNode, " ");
	lastNode = atNode;
	}

	// Get a traverser for ANCESTOR:: axis.
	lastNodeName = dtm.getNodeName(lastNode);
	System.out.println("\n#### ANCESTOR from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.ANCESTOR);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for ANCESTORORSELF:: axis.
	System.out.println("\n#### ANCESTOR-OR-SELF from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.ANCESTORORSELF);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for ALLFROMNODE:: axis.
	System.out.println("\n#### ALL-FROM-NODE from "+"<"+lastNodeName+">");
	at = dtm.getAxisTraverser(Axis.ALLFROMNODE);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// ABSOLUTE AXIS TESTS
	// These next axis are all Absolute. They all default to the root of the dtm
	// tree, regardless of what we call first() with.
	// Get a traverser for ALL:: axis.
	System.out.println("\n#### ALL(absolute) from "+"<"+dtmRootName+">");
	at = dtm.getAxisTraverser(Axis.ALL);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for DESCENDANTSFROMROOT:: axis.
	System.out.println("\n#### DESCENDANTSFROMROOT(absolute) from "+"<"+dtmRootName+">");
	at = dtm.getAxisTraverser(Axis.DESCENDANTSFROMROOT);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	// Get a traverser for DESCENDANTSORSELFFROMROOT:: axis.
	System.out.println("\n#### DESCENDANTSORSELFFROMROOT(absolute) from "+"<"+dtmRootName+">");
	at = dtm.getAxisTraverser(Axis.DESCENDANTSORSELFFROMROOT);

	// Traverse the axis and print out node info.
	for (int atNode = at.first(lastNode); DTM.NULL != atNode;
	atNode = at.next(lastNode, atNode))
	printNode(dtm, atNode, " ");

	}
	catch(Exception e)
	{
	e.printStackTrace();
	}
	}

	static void printNode(DTM dtm,int nodeHandle,String indent)
	{
	// Briefly display this node
	// Don't bother displaying namespaces or attrs; we do that at the
	// next level up.
	// %REVIEW% Add namespace info, type info, ...

	// Formatting hack -- suppress quotes when value is null, to distinguish
	// it from "null".
	String value=dtm.getNodeValue(nodeHandle);
	String vq=(value==null) ? "" : "\"";

	// Skip outputing of text nodes. In most cases they clutter the output,
	// besides I'm only interested in the elemental structure of the dtm.
	if( TYPENAME[dtm.getNodeType(nodeHandle)] != "TEXT" )
	{
	System.out.println(indent+
	+nodeHandle+": "+
	TYPENAME[dtm.getNodeType(nodeHandle)]+" "+
	dtm.getNodeName(nodeHandle)+" "+
	" Level=" + dtm.getLevel(nodeHandle)+" "+
	"\tValue=" + vq + value + vq
	);
	}
	}

	}