Why does my namespace alias disappear?

Hi,

I have the following program that reads in an xml file, builds a Jdom tree and writes it out using XMLOutputter:

import java.util.*;
import java.io.*;

import org.jdom.*;
import org.jdom.input.DOMBuilder;
import org.jdom.input.SAXBuilder;
import org.jdom.output.DOMOutputter;
import org.jdom.output.XMLOutputter;

class TestXYZ
{
    TestXYZ
    {
    }

public static void main( String[] args )
{

String fileName = null;

fileName = args[0];

try
{
SAXBuilder saxBuilder = new SAXBuilder();
Document jdomDocument1 = saxBuilder.build( fileName );

           XMLOutputter outp = new XMLOutputter();
          outp.setTextTrim(true);
          outp.setIndent(" ");
          outp.setNewlines(true);
          outp.output( jdomDocument1, new BufferedOutputStream(new FileOutputStream( fileName + "FromJdom.xml" )) );

}
        catch(JDOMException jde)
        {
            jde.printStackTrace(System.err);
           System.exit(1);
        }
        catch(IOException ioe)
        {
            ioe.printStackTrace(System.err);
          System.exit(1);
        }

} // End method main

} // End class TestXYZ

My input xml file looks like:

<?xml version="1.0" encoding="utf-8"?>
<RESPONSE xmlns="http://jeep.jivanet.net/mtrschema.xsd" xmlns:mtr="http://jeep.jivanet.net/mtrschema.xsd">
<STATUS>0</STATUS>
<DOC type="OWL">
<rdf:RDF xmlns="http://onts.dia.mil/ct.owl#" xmlns:ct="http://onts.dia.mil/ct.owl#" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:rdfs="http://www.w3.org/2000/01/rdf-schema#">
    <rdf:Description rdf:ID="AEROmetadata">
        <rdf:type rdf:resource="http://onts.dia.mil/ct.owl#Metadata"/>
        <sourceDateOfInfo rdf:resource="#AEROmetadatadate"/>
    </rdf:Description>
    <rdf:Description rdf:ID="AEROmetadatadate">
        <rdf:type rdf:resource="http://onts.dia.mil/ct.owl#DateTime"/>
    </rdf:Description>
    <rdf:Description rdf:ID="SMOOSH0000000053">
        <hasMetadata rdf:resource="#AEROmetadata"/>
        <rdf:type rdf:resource="http://onts.dia.mil/ct.owl#Person"/>
        <hasName>Low Graphics</hasName>
        <gender>NONE</gender>
        <hasRefs rdf:resource="#SMOOSH0000000053r"/>
    </rdf:Description>
    <rdf:Description rdf:ID="SMOOSH0000000053r">
        <hasMetadata rdf:resource="#AEROmetadata"/>
        <rdf:type rdf:resource="http://onts.dia.mil/ct.owl#Refs"/>
        <ref>105,116</ref>
    </rdf:Description>
    <rdf:Description rdf:ID="SMOOSH0000000006">
        <hasMetadata rdf:resource="#AEROmetadata"/>
        <rdf:type rdf:resource="http://onts.dia.mil/ct.owl#CommercialOrganization"/>
        <hasName>BBC News</hasName>
        <hasRefs rdf:resource="#SMOOSH0000000006r"/>
        <hasName>BBC World Service</hasName>
        <hasName>BBC</hasName>
        <hasName>BBC WORLD SERVICE</hasName>
        <hasMetadata rdf:resource="#NetOwlmetadata" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"/>
    </rdf:Description>

.
</rdf:RDF>
</DOC>
</RESPONSE

The input xml file contains 97 "hasRefs" elements like: <hasRefs rdf:resource="#SMOOSH0000000053r"/>.
The output file also contains 97 "hasRefs" elements, but 50 of them come out without the "rdf:" namespace alias:

Why would that happen?

Any help would be most appreciated,

Neil

[jdom-interest] Why does my namespace alias disappear?

Hainer, Neil

2004-01-29