XMLBeans and XmlCursor

[Patrizio.Ferlito]

Hi all,

I've just started to use XMLBeans and I had some troubles to use
XmlCursor to navigate through a document, update it and get back the
updated version.

This is my xml document:

<?xml version="1.0" encoding="UTF-8"?>
<eda:quoteEvent xmlns:eda="http://www.bsource.ch/EDA";>
        <eda:security>CS GROUP N</eda:security>
        <eda:date>09-03-2007</eda:date>
        <eda:time/>
        <eda:national-nr>1213853</eda:national-nr>
        <eda:change>-0.2</eda:change>
        <eda:volume>5821192</eda:volume>
        <eda:currency transcoder="CURRENCY">CHF</eda:currency>
        <eda:prev-close>87.9</eda:prev-close>
        <eda:open>87.75</eda:open>
        <eda:last>87.7</eda:last>
</eda:quoteEvent>

I would like to retrieve all nodes with transcoder attribute (I've used
the //@transcoder/.. expression), call another component (for
transcodification) and get back the below new one:

<?xml version="1.0" encoding="UTF-8"?>
<eda:quoteEvent xmlns:eda="http://www.bsource.ch/EDA";>
        <eda:security>CS GROUP N</eda:security>
        <eda:date>09-03-2007</eda:date>
        <eda:time/>
        <eda:national-nr>1213853</eda:national-nr>
        <eda:change>-0.2</eda:change>
        <eda:volume>5821192</eda:volume>
        <eda:currency transcoder="CURRENCY">001</eda:currency>
        <eda:prev-close>87.9</eda:prev-close>
        <eda:open>87.75</eda:open>
        <eda:last>87.7</eda:last>
</eda:quoteEvent>

The code is:

  XmlObject xobj = XmlObject.Factory.parse(new
ByteArrayInputStream(bodyEvent.getBytes()));
  XmlObject response = EDATool.transcodification (xobj, "SMI-EDA");

where

public static XmlObject transcodification (XmlObject bodyEvent, String
encoder) throws Exception
{
        if ((bodyEvent == null) || (encoder == null))
                throw new Exception("unexpected null object");
        
        long start = System.currentTimeMillis();
        XmlObject[] elems = bodyEvent.execQuery("//@transcoder/..");
        System.out.println ("execQuery elapsed time msec: " +
(System.currentTimeMillis() - start));
        
        for (int i = 0; i < elems.length; i++)
        {
                XmlCursor cursor = elems[i].newCursor();
                TokenType token = null;
                
                String value = cursor.getTextValue();
                String table = null;
                
                while (cursor.hasNextToken())
                {
                        token = cursor.toNextToken();
                        if (token.isAttr() &&
"transcoder".equals(cursor.getName().toString()))
                        {
                                table = cursor.getTextValue();
                                break;
                        }
                }

                if (table != null)
                {
                        cursor.pop();
                        value = transcode(table, encoder, value);
                        cursor.setTextValue(value);
                }
                cursor.dispose();
        }
        return bodyEvent;
}

My doubts:

1) I noticed that the time for executing execQuery is not neglectable
(msec: 3688 for a document of only 471 bytes).
   What is wrong in my code ?
2) after disposing the cursor the document is not updated, how could I
write back my changes to the document ?

Regards
Patrizio

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