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How to select nodes with explicitly set default name

Subject: How to select nodes with explicitly set default namespace - DOM4J
From: "Barbara Worwood" <bworwood@xxxxxxxxxxxxx>
Date: Wed, 23 Mar 2005 15:25:33 -0000
2.16.840.1.113883.2.1.3.2.4.12
Hi,

I am having a problem selecting nodes that are part of a default namespace. The xml format cannot be modified as it is part of an NHS UK standard.

For Example: xmlns=="urn:hl7-org:v3" is the default namespace, though a call to selectSingleNode from the root element will not return anything for me. See code below...

=======================================================================
=======================================================================
<?xml version="1.0" encoding="UTF-8" ?>
<!-- The element below is the content of the first payload container -->
<PRSC_IN080000UK06 xmlns="urn:hl7-org:v3" xmlns:fo="http://www.w3.org/1999/XSL/Format" xmlns:voc="urn:hl7-org:v3/voc"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="urn:hl7-org:v3../Schemas/PRSC_IN080000UK06.xsd">
<id root="A6C66142-1DD1-11B2-9062-8F5E91AA2DD7"/>
<creationTime value="20040913030014" />
<versionCode code="V3NPfIT2.0" />
<interactionId root="2.16.840.1.113883.2.1.3.2.4.12" extension="PRSC_IN080000UK06" />
<processingCode code="P" />
<processingModeCode code="T" />
<acceptAckCode code="NE" />
<communicationFunctionRcv>
<device>
<id root="2.16.840.1.113883.2.1.3.2.4.10" extension="RJR-0000217" />
</device>
</communicationFunctionRcv>
<communicationFunctionSnd>
<device>
<id root="2.16.840.1.113883.2.1.3.2.4.10" extension="T141A-0000202" />
</device>
</communicationFunctionSnd>
<ControlActEvent>
<subject>
<RequestAvailableSlots classCode="SPLY" moodCode="RQO">
<id root="A6C66142-1DD1-11B2-9062-8F5E91AA2DD7" />
<effectiveTime>
<low value="200411090000" inclusive="true" />
<high value="200412100000" inclusive="false" />
</effectiveTime>
<location typeCode="LOC">
<clinic classCode="SDLOC">
<id root="2.16.840.1.113883.2.1.3.2.4.2" extension="DAVID" displayable="true" />
</clinic>
</location>
</RequestAvailableSlots>
</subject>
</ControlActEvent>
</PRSC_IN080000UK06>
=======================================================================
=======================================================================


/* Code */
InputStream is = CabCfg.class.getClassLoader().getResourceAsStream("testdoc.xml"); // testdoc.xml is doc above
Document doc = new SAXReader().read(is);
Element el = doc.getRootElement();
el.add(new Namespace("", "urn:hl7-org:v3"));
Element interIdEl = (Element)(el.selectSingleNode("//interactionId"));
=======================================================================
=======================================================================


interIdEl returns null.


Any help with this would be greatly appreciated!


Thanks,
Barbara


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