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From "Steffan Westcott (JIRA)" <xmlbeans-...@xml.apache.org>
Subject [jira] Updated: (XMLBEANS-331) Deleting text node causes some XPath select queries to fail
Date Sat, 26 May 2007 18:06:18 GMT

     [ https://issues.apache.org/jira/browse/XMLBEANS-331?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Steffan Westcott updated XMLBEANS-331:
--------------------------------------

    Description: 
Deleting TEXT tokens in a document appears to confuse the selectPath() functionality. Here
is a complete demonstration program :


package bug;

import org.apache.xmlbeans.XmlCursor;
import org.apache.xmlbeans.XmlObject;

public class Bug {

    static String doc ="<?xml version='1.0' encoding='UTF-8'?><a><b/>text<b/></a>";
    static String query = "//b[2]";
    
    public static void main(String[] args) {
        try {
            // Initialise XmlObject and cursor
            XmlObject obj = XmlObject.Factory.parse(doc);
            System.out.println("Intitial document :\n" + obj.toString());
            XmlCursor cur = obj.newCursor();
            
            // Select the second b node - Works fine...
            cur.selectPath(query);
            System.out.println(query + " finds " + cur.getSelectionCount() + " objects");
            
            // Delete the text node
            cur.toStartDoc();
            cur.selectPath("/a/text()");
            cur.toSelection(0);
            cur.removeXml();
            System.out.println("After removing text node :\n" + obj.toString());
            
            // Select the second b node - Doesn't work!!!
            cur.selectPath(query);
            System.out.println(query + " finds " + cur.getSelectionCount() + " objects");
            
            cur.dispose();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}


This produces the following output :

Intitial document :
<a>
  <b/>
  text
  <b/>
</a>
//b[2] finds 1 objects
After removing text node :
<a>
  <b/>
  <b/>
</a>
//b[2] finds 0 objects

Deleting ATTR, START (i.e. a whole element), COMMENT and PROCINST tokens do not exhibit this
problem, it appears to only affect TEXT tokens.

  was:
Deleting TEXT tokens in a document appears to confuse the selectPath() functionality. Here
is a complete demonstration program :


package bug;

import org.apache.xmlbeans.XmlCursor;
import org.apache.xmlbeans.XmlObject;

public class Bug {

    static String doc ="<?xml version='1.0' encoding='UTF-8'?><a><b/>text<b/></a>";
    static String query = "//b[2]";
    
    public static void main(String[] args) {
        try {
            // Initialise XmlObject and cursor
            XmlObject obj = XmlObject.Factory.parse(doc);
            System.out.println("Intitial document :\n" + obj.toString());
            XmlCursor cur = obj.newCursor();
            
            // Select the second b node - Works fine...
            cur.selectPath(query);
            System.out.println(query + " finds " + cur.getSelectionCount() + " objects");
            
            // Delete the text node
            cur.toStartDoc();
            cur.selectPath("/a/text()");
            cur.toSelection(0);
            cur.removeXml();
            System.out.println("After removing text node :\n" + obj.toString());
            
            // Select the second b node - Doesn't work!!!
            cur.selectPath(query);
            System.out.println(query + " finds " + cur.getSelectionCount() + " objects");
            
            cur.dispose();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}


This produces the following output :

Intitial document :
<a>
  <b/>
  text
  <b/>
</a>
//b[2] finds 1 objects
After removing text node :
<a>
  <b/>
  <b/>
</a>
//b[2] finds 0 objects



Adding further info that deleting non-TEXT tokens does not have same problem.

> Deleting text node causes some XPath select queries to fail
> -----------------------------------------------------------
>
>                 Key: XMLBEANS-331
>                 URL: https://issues.apache.org/jira/browse/XMLBEANS-331
>             Project: XMLBeans
>          Issue Type: Bug
>          Components: XPath
>    Affects Versions: Version 2.1, Version 2.2
>         Environment: Windows XP Service Pack 2, JDK 1.6.0_01
>            Reporter: Steffan Westcott
>
> Deleting TEXT tokens in a document appears to confuse the selectPath() functionality.
Here is a complete demonstration program :
> package bug;
> import org.apache.xmlbeans.XmlCursor;
> import org.apache.xmlbeans.XmlObject;
> public class Bug {
>     static String doc ="<?xml version='1.0' encoding='UTF-8'?><a><b/>text<b/></a>";
>     static String query = "//b[2]";
>     
>     public static void main(String[] args) {
>         try {
>             // Initialise XmlObject and cursor
>             XmlObject obj = XmlObject.Factory.parse(doc);
>             System.out.println("Intitial document :\n" + obj.toString());
>             XmlCursor cur = obj.newCursor();
>             
>             // Select the second b node - Works fine...
>             cur.selectPath(query);
>             System.out.println(query + " finds " + cur.getSelectionCount() + " objects");
>             
>             // Delete the text node
>             cur.toStartDoc();
>             cur.selectPath("/a/text()");
>             cur.toSelection(0);
>             cur.removeXml();
>             System.out.println("After removing text node :\n" + obj.toString());
>             
>             // Select the second b node - Doesn't work!!!
>             cur.selectPath(query);
>             System.out.println(query + " finds " + cur.getSelectionCount() + " objects");
>             
>             cur.dispose();
>         } catch (Exception e) {
>             e.printStackTrace();
>         }
>     }
> }
> This produces the following output :
> Intitial document :
> <a>
>   <b/>
>   text
>   <b/>
> </a>
> //b[2] finds 1 objects
> After removing text node :
> <a>
>   <b/>
>   <b/>
> </a>
> //b[2] finds 0 objects
> Deleting ATTR, START (i.e. a whole element), COMMENT and PROCINST tokens do not exhibit
this problem, it appears to only affect TEXT tokens.

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