XPath and Namespace

[Mohana Ramaratnam <mo...@npg.wustl.edu>]

If I have an instance document like so:

 

<Pipeline xmlns="http://nrg.wustl.edu/pipeline"
xmlns:prov="http://www.nbirn.net/prov"
xmlns:xdat="http://nrg.wustl.edu/xdat"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://nrg.wustl.edu/xnat

C:\\schema\pipeline.xsd">

<parameters>

             <parameter>

                    <name>fidldir</name>

                    <value>/fidl/fidl_2.60/bin</value>

             </parameter>

             <parameter>

                    <name>rlbdir</name>

 
<value>/Pipeline/parameters/parameter[name='fidldir']/value/text()
</value>

             </parameter>

</parameters>

</Pipeline>

 

And I want to evaluate the xpath expression:

 

/Pipeline/parameters/parameter[name='fidldir']/value/text()

 

Is it necessary for the namespace prefix of pipeline: to be present in
the expression
/Pipeline/parameters/parameter[name='fidldir']/value/text() for xpath to
be evaluated correctly?

 

Ie should the expression be:

 

/pipeline:Pipeline/pipeline:parameters/pipeline:parameter[pipeline:name=
'fidldir']/pipeline:value/text() 

 

(as in the samples)

 

How do I set the namespace so that the instance document xpath
expression need not have the namespace prefixed. I have looked into
XmlOptions and didn't find anything useful.

 

 

 

RE: XPath and Namespace

[Radu Preotiuc-Pietro <ra...@bea.com>]

See my previous post (7/21) for an example provided by Tony Dean with
namespaces in XPaths. Here is the relevant code:
 
> Sring ns = "declare namespace ns='http://tempuri.org/myService';";

> String xpath = ns +

> "$this/ns:copyintoout/ns:parameters[@myname='Tony']";

> XmlObject[] selections = soapBody.selectPath(xpath);

There is nothing for that in XmlOptions because there is a
"semi-standard" way of doing it by using 'declare namespace
pipeline="http://nrg.wustl.edu/pipeline"' and we stick to that.
 
Hope this helps,
Radu

 
________________________________

From: Mohana Ramaratnam [mailto:mohanar@npg.wustl.edu] 
Sent: Tuesday, July 18, 2006 8:06 AM
To: user@xmlbeans.apache.org
Subject: XPath and Namespace



If I have an instance document like so:

 

<Pipeline xmlns="http://nrg.wustl.edu/pipeline"
xmlns:prov="http://www.nbirn.net/prov"
xmlns:xdat="http://nrg.wustl.edu/xdat"
xmlns:xi="http://www.w3.org/2001/XInclude"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://nrg.wustl.edu/xnat

C:\\schema\pipeline.xsd">

<parameters>

             <parameter>

                    <name>fidldir</name>

                    <value>/fidl/fidl_2.60/bin</value>

             </parameter>

             <parameter>

                    <name>rlbdir</name>

 
<value>/Pipeline/parameters/parameter[name='fidldir']/value/text()
</value>

             </parameter>

</parameters>

</Pipeline>

 

And I want to evaluate the xpath expression:

 

/Pipeline/parameters/parameter[name='fidldir']/value/text()

 

Is it necessary for the namespace prefix of pipeline: to be present in
the expression
/Pipeline/parameters/parameter[name='fidldir']/value/text() for xpath to
be evaluated correctly?

 

Ie should the expression be:

 

/pipeline:Pipeline/pipeline:parameters/pipeline:parameter[pipeline:name=
'fidldir']/pipeline:value/text() 

 

(as in the samples)

 

How do I set the namespace so that the instance document xpath
expression need not have the namespace prefixed. I have looked into
XmlOptions and didn't find anything useful.

 

 

 

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