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Subject: XOM API for Processing XML with Java

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  • From: "Bhaskar Maddala" <maddalab AT gmail.com>
  • To: xom-interest AT lists.ibiblio.org
  • Subject: [XOM-interest] XOM Unknown namespace prefix : Noob Question
  • Date: Thu, 6 Dec 2007 18:14:17 -0500

Hello,

I receive a request that conforms to an xml schema, the schema definition
fragment is as follows

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"; xmlns="
http://schemas.mycompany.com/2007/pro"; targetNamespace="
http://schemas.mycompany.com/2007/pro"; elementFormDefault="qualified">
<xsd:complexType name="BusinessObjectsType">
<xsd:sequence minOccurs="1" maxOccurs="unbounded">
<xsd:element minOccurs="0" name="RequestSettings"
type="RequestSettingsType" />
....
</xsd:sequence>
</xsd:complexType>
</xsd:schema>

From my limited understanding I do not believe the client is restricted in
using any namespace prefix when creating a xml that conforms to the schema
definition above.

Here is an example of the xml I receive for processing

<?xml version="1.0" encoding="UTF-8"?>
<ns1:BusinessObjects xmlns:ns1="http://schemas.mycompany.com/2007/pro";>
<ns1:RequestSettings>
....
</ns1:RequestSettings>
</ns1:BusinessObjects>

I use the following code to retrieve a nu.xom.Document instance

Builder builder = new Builder();
StringReader reader = new StringReader(request);
Document document = builder.build(reader);

When I attempt to do the following
Nodes nodes = m_document.query("BusinessObjects/RequestSettings");

nodes.size() is zero. I think this is because XPath is Namespace aware
and I need the prefix ns1 in the query XPath expression.

Question : Currently I do not know the prefix used by the client making
the request, is there any way in XOM for me to retrieve the prefix so that I
can use it elsewhere, or better yet is there an option that would allow the
existing query to work?


Thanks
Bhaskar




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