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List:       xmlbeans-dev
Subject:    [jira] Updated: (XMLBEANS-382) Second traversal of XmlBeans
From:       "Wing Yew Poon (JIRA)" <xmlbeans-dev () xml ! apache ! org>
Date:       2008-09-29 18:46:44
Message-ID: 1253039660.1222714004569.JavaMail.jira () brutus
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     [ https://issues.apache.org/jira/browse/XMLBEANS-382?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel \
]

Wing Yew Poon updated XMLBEANS-382:
-----------------------------------

    Description: 
After parsing an XML file with the generic XmlObject.Factory.parse method, traversing \
the DOM representation the second time produces incorrect results. The following \
shortened example demonstrates this:

content of example_fail.xml:

<a>
	<!--comment-->
	<b>example</b>
</a>

example-code:

<code>
import java.io.File;

import org.apache.xmlbeans.XmlObject;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

public class XmlBeansBug {
	
	private static String EXAMPLE_XML_FILE_FAIL = "example_fail.xml";

	private static void traverseNodes(Node node){

		//get first child (<a>-node)
		Node aNode = node.getFirstChild();
						
		//get next child (#TEXT-node)
		Node textNode1 = aNode.getFirstChild();
				
		//get next sibling (#COMMENT-node)
		Node commentNode = textNode1.getNextSibling();
		
		//get next sibling (second #TEXT-node)
		boolean hasCommentNodeChildes = commentNode.hasChildNodes();
		System.out.println("  has comment-node child-nodes: " + hasCommentNodeChildes);
		
		if(hasCommentNodeChildes){
			Node chilfOfCommentNode = commentNode.getFirstChild();
			System.out.println("  child of comment-node is: " + chilfOfCommentNode);
		}
		
		Node textNode2 = commentNode.getNextSibling();

		//get next sibling (<b>-node)
		Node bNode = textNode2.getNextSibling();
	}

	public static void main(String[] args) throws Throwable {
		XmlObject exampleFailXmlObject = XmlObject.Factory
				.parse(new File(EXAMPLE_XML_FILE_FAIL));
		Document exampleFailDocument = (Document) exampleFailXmlObject
				.getDomNode();

		System.out.println("First run:");
		traverseNodes(exampleFailDocument);
		System.out.println("Second run:");
		traverseNodes(exampleFailDocument);
	}

}
</code>

The first time hasChildNodes() on the comment-node returns false, which is correct. \
The second time it returns true although there have only been reading operations on \
the DOM model. The further call of getFirstChild() returns null although the previous \
call to hasChildNodes() returned true.


  was:
After parsing an XML-file with the generic XmlObject.Factory.parse-method the \
traversion of the DOM-Reprsentation fails the second time. The following shortened \
example demonstrates this:

content of example_fail.xml:

<a>
	<!--comment-->
	<b>example</b>
</a>

example-code:

<code>
import java.io.File;

import org.apache.xmlbeans.XmlObject;
import org.w3c.dom.Document;
import org.w3c.dom.Node;

public class XmlBeansBug {
	
	private static String EXAMPLE_XML_FILE_FAIL = "example_fail.xml";

	private static void traverseNodes(Node node){

		//get first child (<a>-node)
		Node aNode = node.getFirstChild();
						
		//get next child (#TEXT-node)
		Node textNode1 = aNode.getFirstChild();
				
		//get next sibling (#COMMENT-node)
		Node commentNode = textNode1.getNextSibling();
		
		//get next sibling (second #TEXT-node)
		boolean hasCommentNodeChildes = commentNode.hasChildNodes();
		System.out.println("  has comment-node child-nodes: " + hasCommentNodeChildes);
		
		if(hasCommentNodeChildes){
			Node chilfOfCommentNode = commentNode.getFirstChild();
			System.out.println("  child of comment-node is: " + chilfOfCommentNode);
		}
		
		Node textNode2 = commentNode.getNextSibling();

		//get next sibling (<b>-node)
		Node bNode = textNode2.getNextSibling();
	}

	public static void main(String[] args) throws Throwable {
		XmlObject exampleFailXmlObject = XmlObject.Factory
				.parse(new File(EXAMPLE_XML_FILE_FAIL));
		Document exampleFailDocument = (Document) exampleFailXmlObject
				.getDomNode();

		System.out.println("First run:");
		traverseNodes(exampleFailDocument);
		System.out.println("Second run:");
		traverseNodes(exampleFailDocument);
	}

}
</code>

The first time hasChildNodes() on the comment-node returns false, which is correct. \
The second time it returns true althoughthere have only been reading operations on \
the DOM-model. The further call of getFirstChild() returns null although the previous \
call to hasChildNodes() returned true.


        Summary: Second traversal of XmlBeans DOM-implementation incorrect  (was: \
Twice traversion of XmlBeans DOM-implementation fails)

> Second traversal of XmlBeans DOM-implementation incorrect
> ---------------------------------------------------------
> 
> Key: XMLBEANS-382
> URL: https://issues.apache.org/jira/browse/XMLBEANS-382
> Project: XMLBeans
> Issue Type: Bug
> Components: DOM
> Affects Versions: Version 2.4 
> Environment: Windows Xp Professional, Sun JDK 1.5.0-16
> Reporter: Andreas Klöber
> Priority: Critical
> Attachments: xmlBeansTest.zip
> 
> 
> After parsing an XML file with the generic XmlObject.Factory.parse method, \
> traversing the DOM representation the second time produces incorrect results. The \
> following shortened example demonstrates this: content of example_fail.xml:
> <a>
> 	<!--comment-->
> 	<b>example</b>
> </a>
> example-code:
> <code>
> import java.io.File;
> import org.apache.xmlbeans.XmlObject;
> import org.w3c.dom.Document;
> import org.w3c.dom.Node;
> public class XmlBeansBug {
> 	
> 	private static String EXAMPLE_XML_FILE_FAIL = "example_fail.xml";
> 	private static void traverseNodes(Node node){
> 		//get first child (<a>-node)
> 		Node aNode = node.getFirstChild();
> 						
> 		//get next child (#TEXT-node)
> 		Node textNode1 = aNode.getFirstChild();
> 				
> 		//get next sibling (#COMMENT-node)
> 		Node commentNode = textNode1.getNextSibling();
> 		
> 		//get next sibling (second #TEXT-node)
> 		boolean hasCommentNodeChildes = commentNode.hasChildNodes();
> 		System.out.println("  has comment-node child-nodes: " + hasCommentNodeChildes);
> 		
> 		if(hasCommentNodeChildes){
> 			Node chilfOfCommentNode = commentNode.getFirstChild();
> 			System.out.println("  child of comment-node is: " + chilfOfCommentNode);
> 		}
> 		
> 		Node textNode2 = commentNode.getNextSibling();
> 		//get next sibling (<b>-node)
> 		Node bNode = textNode2.getNextSibling();
> 	}
> 	public static void main(String[] args) throws Throwable {
> 		XmlObject exampleFailXmlObject = XmlObject.Factory
> 				.parse(new File(EXAMPLE_XML_FILE_FAIL));
> 		Document exampleFailDocument = (Document) exampleFailXmlObject
> 				.getDomNode();
> 		System.out.println("First run:");
> 		traverseNodes(exampleFailDocument);
> 		System.out.println("Second run:");
> 		traverseNodes(exampleFailDocument);
> 	}
> }
> </code>
> The first time hasChildNodes() on the comment-node returns false, which is correct. \
> The second time it returns true although there have only been reading operations on \
> the DOM model. The further call of getFirstChild() returns null although the \
> previous call to hasChildNodes() returned true.

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