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Posted to j-dev@xerces.apache.org by "Michael Glavassevich (JIRA)" <xe...@xml.apache.org> on 2006/08/28 18:03:22 UTC
[jira] Resolved: (XERCESJ-1180) Document root changes indirectly
during DeferredDocumentImpl children modification
[ http://issues.apache.org/jira/browse/XERCESJ-1180?page=all ]
Michael Glavassevich resolved XERCESJ-1180.
-------------------------------------------
Resolution: Fixed
There was an assumption in the code that a newly expanded element node must be the root element if none currently exists. Your test proves that isn't always true. I just committed a fix to SVN. Note that you weren't actually using Xerces when you encountered this bug. The com.sun.org.apache.xerces.internal.* classes come from Sun's implementation of JDK 5.0+ and are a fork/derivative of Apache Xerces. If you're looking for a fix there you'll need to pursue it with Sun.
> Document root changes indirectly during DeferredDocumentImpl children modification
> ----------------------------------------------------------------------------------
>
> Key: XERCESJ-1180
> URL: http://issues.apache.org/jira/browse/XERCESJ-1180
> Project: Xerces2-J
> Issue Type: Bug
> Environment: java version "1.5.0_06"
> Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05)
> Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)
> Reporter: Yury Semikhatsky
> Assigned To: Michael Glavassevich
>
> In the example below last line causes org.w3c.dom.DOMException because document root is already defined.
> import java.io.ByteArrayInputStream;
> import java.io.InputStream;
> import javax.xml.parsers.DocumentBuilder;
> import javax.xml.parsers.DocumentBuilderFactory;
> import org.w3c.dom.Document;
> import org.w3c.dom.Element;
> public class SetRootTest {
> public static void main(String[] args) throws Exception {
> DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
> InputStream inputStream = new ByteArrayInputStream("<root><a><b/></a></root>".getBytes());
> Document document = builder.parse(inputStream);
> Element root = document.getDocumentElement();
> Element a = (Element) root.getChildNodes().item(0);
> document.removeChild(root);
> System.out.println(document.getDocumentElement());
>
> a.getFirstChild();
>
> System.out.println(document.getDocumentElement());
>
> document.appendChild(root);//exception here
> }
> }
> The program output:
> null
> [b: null]
> Exception in thread "main" org.w3c.dom.DOMException: HIERARCHY_REQUEST_ERR: An attempt was made to insert a node where it is not permitted.
> at com.sun.org.apache.xerces.internal.dom.CoreDocumentImpl.insertBefore(CoreDocumentImpl.java:419)
> at com.sun.org.apache.xerces.internal.dom.NodeImpl.appendChild(NodeImpl.java:275)
> at SetRootTest.main(SetRootTest.java:27)
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