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Subject: XPath problems using JDom

Subject: XPath problems using JDom

2007-10-22       - By Bhave, Ameya

 Back
Hi,

I have read some of the literature on this subject in the archives, and am
still unable to sort my problem out. Basically I am trying to read an xml
file using an xpath expression.

My xml file looks like this:

-- ---
<?xml version="1.0" encoding="UTF-8 (See http://UTF-8.ora-code.com)"?>
<OTA_AirLowFareSearchRQ EchoToken="0" MaxResponses="20" Mode="MasterPricer"
SequenceNmbr="0" Target="Amadeus" xmlns="
http://www.opentravel.org/OTA/2003/05"
xmlns:helper="xalan://com.openjaw.rules.XSLHelper" xmlns:xalan="
http://xml.apache.org/xalan">
   <POS>
       <Source ISOCurrency="GBP" PseudoCityCode="1AC">
           <ns1:RequestorID ID="H6265/AAA/32835/2006/41000/OPENJAW/MERLIN"
ID_Context="ABTA" xmlns:ns1="http://www.opentravel.org/OTA/2003/05"
xmlns:ns2="http://www.tui-uk.co.uk/OTA_EXT/2006" xmlns:ns3="
http://www.openjawtech.com/2005" xmlns:ns4="
http://www.opentravel.org/OTA/2002/08"/>
       </Source>
   </POS>
   <OriginDestinationInformation>
       <DepartureDateTime>2007-10-23T00:00:00.000+01:00</DepartureDateTime>
       <OriginLocation CodeContext="IATA" LocationCode="LGW"/>
       <DestinationLocation CodeContext="IATA" LocationCode="PMI"/>
   </OriginDestinationInformation>
   <OriginDestinationInformation>
       <DepartureDateTime>2007-10-30T00:00:00</DepartureDateTime>
       <OriginLocation CodeContext="IATA" LocationCode="PMI"/>
       <DestinationLocation CodeContext="IATA" LocationCode="LGW"/>
   </OriginDestinationInformation>
   <TravelerInfoSummary>
       <AirTravelerAvail>
           <PassengerTypeQuantity Code="ADT" Quantity="2"/>
           <PassengerTypeQuantity Code="CHD" Quantity="3"/>
       </AirTravelerAvail>
   </TravelerInfoSummary>
</OTA_AirLowFareSearchRQ>

-- ---

And the code to access the info (using xpath) is:

-- ----
public static void getXPathValue(File file)
  {
     Document xmlDoc = getDocumentForFile(file);

     try
     {
//         XPath.setXPathClass(org.jaxen.jdom.JDOMXPath.class);
        XPath xPath = XPath.newInstance
("/ota:OTA_AirLowFareSearchRQ/ota:OriginDestinationInformation");
        xPath.addNamespace("ota", "http://www.opentravel.org/OTA/2003/05");
//default ns

        xPath.addNamespace("helper",
"xalan://com.openjaw.rules.XSLHelper");
        xPath.addNamespace("xalan", "http://xml.apache.org/xalan");
        xPath.addNamespace("ns2", "http://www.tui-uk.co.uk/OTA_EXT/2006");
        xPath.addNamespace("ns1", "http://www.openjawtech.com/2005");
        xPath.addNamespace("ns3",
"http://www.opentravel.org/OTA/2002/08");





        List nodes = xPath.selectNodes(xmlDoc);
        System.out.println("Nodes = " + nodes);

     }
     catch (Exception e)
     {
        System.out.println("Error: " + e);
        e.printStackTrace(System.out);
     }
}
-- ----

The problem is that the list I get is empty.

--
__ ____ ____ ____ ____ _____
Yours ever,
Ameya Bhave
(M) +44 07894080785
(H)  +44 02476410217
(E)  ameya@(protected)

Hi,<br><br>I have read some of the literature on this subject in the archives,
and am still unable to sort my problem out. Basically I am trying to read an
xml file using an xpath expression.<br><br>My xml file looks like this:
<br><br>-- ---<br>&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8 (See http://UTF-8.ora-code.com)&quot;?
&gt;<br>&lt;OTA_AirLowFareSearchRQ EchoToken=&quot;0&quot; MaxResponses=&quot;20
&quot; Mode=&quot;MasterPricer&quot; SequenceNmbr=&quot;0&quot; Target=&quot
;Amadeus&quot; xmlns=&quot;
<a href="http://www.opentravel.org/OTA/2003/05">http://www.opentravel.org/OTA
/2003/05</a>&quot; xmlns:helper=&quot;xalan://com.openjaw.rules.XSLHelper&quot;
xmlns:xalan=&quot;<a href="http://xml.apache.org/xalan">http://xml.apache.org
/xalan
</a>&quot;&gt;<br>&nbsp;&nbsp;&nbsp; &lt;POS&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;
&nbsp;&nbsp; &lt;Source ISOCurrency=&quot;GBP&quot; PseudoCityCode=&quot;1AC
&quot;&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt;ns1
:RequestorID ID=&quot;H6265/AAA/32835/2006/41000/OPENJAW/MERLIN&quot; ID_Context
=&quot;ABTA&quot; xmlns:ns1=&quot;
<a href="http://www.opentravel.org/OTA/2003/05">http://www.opentravel.org/OTA
/2003/05</a>&quot; xmlns:ns2=&quot;<a href="http://www.tui-uk.co.uk/OTA_EXT/2006
">http://www.tui-uk.co.uk/OTA_EXT/2006</a>&quot; xmlns:ns3=&quot;
<a href="http://www.openjawtech.com/2005">http://www.openjawtech.com/2005</a>
&quot; xmlns:ns4=&quot;<a href="http://www.opentravel.org/OTA/2002/08">http:/
/www.opentravel.org/OTA/2002/08</a>&quot;/&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp
;&nbsp; &lt;/Source&gt;
<br>&nbsp;&nbsp;&nbsp; &lt;/POS&gt;<br>&nbsp;&nbsp;&nbsp; &lt
;OriginDestinationInformation&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt
;DepartureDateTime&gt;2007-10-23T00:00:00.000+01:00&lt;/DepartureDateTime&gt;<br
>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt;OriginLocation CodeContext=&quot;IATA
&quot; LocationCode=&quot;LGW&quot;/&gt;
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt;DestinationLocation CodeContext=
&quot;IATA&quot; LocationCode=&quot;PMI&quot;/&gt;<br>&nbsp;&nbsp;&nbsp; &lt;
/OriginDestinationInformation&gt;<br>&nbsp;&nbsp;&nbsp; &lt
;OriginDestinationInformation&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt
;DepartureDateTime&gt;2007-10-30T00:00:00&lt;/DepartureDateTime&gt;
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt;OriginLocation CodeContext=&quot
;IATA&quot; LocationCode=&quot;PMI&quot;/&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;
&nbsp; &lt;DestinationLocation CodeContext=&quot;IATA&quot; LocationCode=&quot
;LGW&quot;/&gt;<br>&nbsp;&nbsp;&nbsp; &lt;/OriginDestinationInformation&gt;
<br>&nbsp;&nbsp;&nbsp; &lt;TravelerInfoSummary&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;
&nbsp;&nbsp; &lt;AirTravelerAvail&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp; &lt;PassengerTypeQuantity Code=&quot;ADT&quot; Quantity=&quot
;2&quot;/&gt;<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt
;PassengerTypeQuantity Code=&quot;CHD&quot; Quantity=&quot;3&quot;/&gt;
<br>&nbsp;&nbsp;&nbsp; &nbsp;&nbsp;&nbsp; &lt;/AirTravelerAvail&gt;<br>&nbsp;
&nbsp;&nbsp; &lt;/TravelerInfoSummary&gt;<br>&lt;/OTA_AirLowFareSearchRQ&gt;<br>
<br>-- ---<br clear="all"><br>And the code to access the info (using xpath) is:
<br><br>-- ----<br>public static void getXPathValue(File file)
<br>&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Document xmlDoc =
getDocumentForFile(file);<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; try<br>&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp; {<br>//&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
XPath.setXPathClass(org.jaxen.jdom.JDOMXPath.class);<br>&nbsp;&nbsp;&nbsp;&nbsp
;&nbsp;&nbsp;&nbsp;&nbsp; XPath xPath = XPath.newInstance(&quot;/ota:OTA
_AirLowFareSearchRQ/ota:OriginDestinationInformation&quot;);
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xPath.addNamespace(&quot
;ota&quot;, &quot;<a href="http://www.opentravel.org/OTA/2003/05">http://www
.opentravel.org/OTA/2003/05</a>&quot;); //default ns<br><br>&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xPath.addNamespace(&quot;helper&quot;, &quot
;xalan://com.openjaw.rules.XSLHelper&quot;);
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xPath.addNamespace(&quot
;xalan&quot;, &quot;<a href="http://xml.apache.org/xalan">http://xml.apache.org
/xalan</a>&quot;);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xPath
.addNamespace(&quot;ns2&quot;, &quot;<a href="http://www.tui-uk.co.uk/OTA_EXT
/2006">
http://www.tui-uk.co.uk/OTA_EXT/2006</a>&quot;);<br>&nbsp;&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp; xPath.addNamespace(&quot;ns1&quot;, &quot;<a href="http
://www.openjawtech.com/2005">http://www.openjawtech.com/2005</a>&quot;);<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; xPath.addNamespace(&quot;ns3
&quot;, &quot;
<a href="http://www.opentravel.org/OTA/2002/08">http://www.opentravel.org/OTA
/2002/08</a>&quot;);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <br><br><br><br><br>&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; List nodes = xPath.selectNodes(xmlDoc
);<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println(&quot
;Nodes = &quot; + nodes);
<br><br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;
catch (Exception e)<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<br>&nbsp;&nbsp;&nbsp;
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; System.out.println(&quot;Error: &quot; + e);<br>
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; e.printStackTrace(System.out);
<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; }<br>}<br>-- ----<br><br>The problem is that
the list I get is empty.
<br><br>-- <br>__ ____ ____ ____ ____ _____<br>Yours ever,<br>Ameya Bhave<br>(M
) +44 07894080785<br>(H)&nbsp;&nbsp;+44 02476410217<br>(E)&nbsp;&nbsp;<a href=
"mailto:ameya@(protected)">ameya@(protected)</a>

__ ____ ____ ____ ____ ____ ____ ____ ____ ____
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