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List:       xmlbeans-dev
Subject:    [jira] Commented: (XMLBEANS-409) XPath on a copy() of an XMLBeans
From:       "Harry Wambolt (JIRA)" <xmlbeans-dev () xml ! apache ! org>
Date:       2009-06-18 12:17:07
Message-ID: 1365555111.1245327427616.JavaMail.jira () brutus
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    [ https://issues.apache.org/jira/browse/XMLBEANS-409?page=com.atlassian.jira.plugi \
n.system.issuetabpanels:comment-tabpanel&focusedCommentId=12721218#action_12721218 ] 

Harry Wambolt commented on XMLBEANS-409:
----------------------------------------

Changing org.apache.xmlbeans.impl.xpath.saxon.XBeansXPath, method selectNodes, \
line(s)

            NodeInfo contextItem = 
                //config.buildDocument(new DOMSource(contextNode));
                config.unravel(new DOMSource(contextNode));

to
           DocumentWrapper contextItem =
                new DocumentWrapper(contextNode, contextNode.getNamespaceURI(), \
config);

appears to restore XPath capabilities for document fragments.  The XQuery adapter
org.apache.xmlbeans.impl.xquery.saxon.XBeansXQuery may require modification as well.

> XPath on a copy() of an XMLBeans comp derived class fails 
> ----------------------------------------------------------
> 
> Key: XMLBEANS-409
> URL: https://issues.apache.org/jira/browse/XMLBEANS-409
> Project: XMLBeans
> Issue Type: Bug
> Components: Cursor, DOM, XmlObject, XPath
> Affects Versions: Version 2.4 
> Environment: Windows XP Professional
> JDK 1.6.0_07
> Saxon 9.0.0.4
> XMLBeans 2.4.0
> Reporter: Bryan Worrell
> 
> I can execute an XPath on an XMLBeans derived class using selectPath(...) and it \
> will behave as expected; returning 0-n results in an XmlObject[] array.  However, \
> if I create a copy of the object and execute an XPath on it, every XPath will \
> return a zero-length array. The examples behave properly with XMLBeans 2.3.0 with \
> Saxon 8.8.  I noticed this issue when I switched to XMLBeans 2.4.0 and Saxon \
> 9.0.0.4.  The issue remains if I use XMLBeans 2.4.0 and Saxon 9.1.0.6 (the current \
> release at the time of this posting). So, given this example:
> <AppDoc>
> <Applications>
> <ApplicationType>
> <Name>foobar</Name>
> </ApplicationType>
> <Applications>
> </AppDoc>
> /**
> Say we pass in the ApplicationType object with the Name of "foobar"
> **/
> public void confuseTheDeveloper( ApplicationType app ){
> String xPath = "$this/*:Name";
> ApplicationType appCopy = (ApplicationType)app.copy();  
> XmlObject[] objs = app.selectPath( xPath );
> XmlObject[] otherObjs = appCopy.selectPath( xPath );
> System.out.prinln( objs.length > 0 );  // prints 'true'  ... like it should
> System.out.println( otherObjs.length > 0 ); // prints 'false'   ...even though it \
> should print 'true' }
> /**
> Another example
> **/
> public void moreConfusion(){
> ApplicationType app = ApplicationType.Factory.newInstance();
> app.setName( "foobar" );
> 
> XmlObject[] objs = app.selectPath( "$this/*:Name" );
> System.out.println( objs.length > 0 );  // prints false
> }

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