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Posted to commits@xerces.apache.org by el...@apache.org on 2001/07/23 13:47:44 UTC
cvs commit: xml-xerces/java/tests/dom/treewalker TestFirstChild.java
elena 01/07/23 04:47:44
Added: java/tests/dom/treewalker TestFirstChild.java
Log:
Test for TreeWalkerImpl class. Contributed by Christian Geuer-Pollmann.
Revision Changes Path
1.1 xml-xerces/java/tests/dom/treewalker/TestFirstChild.java
Index: TestFirstChild.java
===================================================================
/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 2001 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally developed by Christian Geuer-Pollmann. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package dom.treewalker;
import java.io.*;
import javax.xml.parsers.*;
import org.w3c.dom.*;
import org.w3c.dom.traversal.*;
import org.xml.sax.*;
/**
* The class tests TreeWalkerImpl.firstChild() and TreeWalkerImpl.nextSibling();
* The class generates simple XML document and traverses it.
*
* @author Christian Geuer-Pollmann <ge...@nue.et-inf.uni-siegen.de>
* @version $Id: TestFirstChild.java,v 1.1 2001/07/23 11:47:44 elena Exp $
*/
public class TestFirstChild {
public static void main(String args[]) throws Exception {
System.out.println(" --- "
+ org.apache.xerces.framework.Version.fVersion
+ " --- ");
Document doc = getNodeSet1();
NodeFilter nodefilter = null;
boolean entityReferenceExpansion = true;
int whatToShow = NodeFilter.SHOW_ALL;
TreeWalker treewalker =
((DocumentTraversal) doc).createTreeWalker(doc, whatToShow,
nodefilter, entityReferenceExpansion);
ByteArrayOutputStream bytearrayoutputstream =
new ByteArrayOutputStream();
PrintWriter printwriter =
new PrintWriter(new OutputStreamWriter(bytearrayoutputstream,
"UTF8"));
process2(treewalker, printwriter);
printwriter.flush();
System.out.println();
System.out.println("Testing the following XML document:\n" + new String(bytearrayoutputstream.toByteArray()));
}
/**
* Method getNodeSet1
*
* @return
* @throws ParserConfigurationException
*/
private static Document getNodeSet1()
throws ParserConfigurationException {
DocumentBuilderFactory dfactory =
DocumentBuilderFactory.newInstance();
dfactory.setValidating(false);
dfactory.setNamespaceAware(true);
DocumentBuilder db = dfactory.newDocumentBuilder();
Document doc = db.newDocument();
Element root = doc.createElement("RootElement");
Element e1 = doc.createElement("Element1");
Element e2 = doc.createElement("Element2");
Element e3 = doc.createElement("Element3");
Text e3t = doc.createTextNode("Text in Element3");
e3.appendChild(e3t);
root.appendChild(e1);
root.appendChild(e2);
root.appendChild(e3);
doc.appendChild(root);
String s1 ="<RootElement><Element1/><Element2/><Element3>Text in Element3</Element3></RootElement>";
return doc;
}
/**
* recursively traverses the tree
*
* for simplicity, I don't handle comments, Attributes, PIs etc.
* Only Text, Document and Element
*
* @param treewalker
* @param printwriter
*/
private static void process2(TreeWalker treewalker,
PrintWriter printwriter) {
Node currentNode = treewalker.getCurrentNode();
switch (currentNode.getNodeType()) {
case Node.TEXT_NODE :
case Node.CDATA_SECTION_NODE :
printwriter.print(currentNode.getNodeValue());
break;
case Node.ENTITY_REFERENCE_NODE :
case Node.DOCUMENT_NODE :
case Node.ELEMENT_NODE :
default :
if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
printwriter.print('<');
printwriter.print(currentNode.getNodeName());
printwriter.print(">");
}
Node node1 = treewalker.firstChild();
if (node1 == null) {
System.out.println(getNodeTypeString(currentNode.getNodeType())
+ "_NODE parent: "
+ currentNode.getNodeName()
+ " has no children ");
}
else {
System.out.println(getNodeTypeString(currentNode.getNodeType())
+ "_NODE parent: "
+ currentNode.getNodeName()
+ " has children ");
while (node1 != null) {
{
String qStr = "";
for (Node q = node1; q != null; q = q.getParentNode()) {
qStr = q.getNodeName() + "/" + qStr;
}
System.out.println(getNodeTypeString(currentNode.getNodeType())
+ "_NODE process child " + qStr);
}
// recursion !!!
process2(treewalker, printwriter);
node1 = treewalker.nextSibling();
if (node1 != null) {
System.out.println("treewalker.nextSibling() = "
+ node1.getNodeName());
}
} // while(node1 != null)
}
System.out.println("setCurrentNode() back to "
+ currentNode.getNodeName());
treewalker.setCurrentNode(currentNode);
if (currentNode.getNodeType() == Node.ELEMENT_NODE) {
printwriter.print("</");
printwriter.print(currentNode.getNodeName());
printwriter.print(">");
}
break;
}
}
/** Field nodeTypeString */
private static String[] nodeTypeString = new String[]{ "", "ELEMENT",
"ATTRIBUTE",
"TEXT_NODE",
"CDATA_SECTION",
"ENTITY_REFERENCE",
"ENTITY",
"PROCESSING_INSTRUCTION",
"COMMENT",
"DOCUMENT",
"DOCUMENT_TYPE",
"DOCUMENT_FRAGMENT",
"NOTATION"};
/**
*
* Transforms <code>org.w3c.dom.Node.XXX_NODE</code> NodeType values into
* XXX Strings.
*
* @param nodeType as taken from the {@link org.w3c.dom.Node#getNodeType}
* function
* @return the String value.
* @see org.w3c.dom.Node#getNodeType
* @param nodeType
* @return
*/
public static String getNodeTypeString(short nodeType) {
if ((nodeType > 0) && (nodeType < 13)) {
return nodeTypeString[nodeType];
}
else {
return "";
}
}
}
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