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Hello
I have
a question. I am a first time libxml2 user.
I am looking into
using libxml2 to interpret incoming XML messages (whose XSD files I
have) that I receive in a buffer from a server
using TCP/IP connection. I noticed
that libxml2 offers API that could help look for a certain
element (by seraching for
an xmlNode with xmlTextReaderNodeType() = 1), get and check its
name (using xmlTextReaderConstName()) and if it is the right name (element I am
looking for) get itx text value (by seraching for an xmlNode with
xmlTextReaderNodeType() = 3).
Question:
Is this the right way to parse
an XML message and get the text
values embedded in the message.?
Thanks. - Nidal
Zeidat
From: xml-bounces gnome org [mailto:xml-bounces gnome org] On Behalf Of Andric, Milan Sent: Friday, August 04, 2006 4:37 PM To: xml gnome org Subject: [xml] question on xml validtion and xpath Hi, I’m trying to validate my XML file
against XSchema that is linked inline to such file.
XML file has elements with default
namespace, without prefix, to which XSchema documents links to, enabling it to
do its validation work. Validation goes ok. Next thing I
tried is using Xpath _expression_ to select something using absolute path from my
XML file and XPath returned no results. Sample XML
file: <?xml version="1.0" encoding="utf-8"
?> <TU
xmlns="http://www.w3schools.com"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3schools.com config.xsd">
<Model Name="Models">
</Model>
</TU> Associated XML
Schema: <?xml version="1.0"
?> <xs:schema
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.w3schools.com"
xmlns="http://www.w3schools.com">
<xs:element
name="TU">
// validation rules here… </xs:element> </xs:schema> Question: My Xpath Inquiry:
/TU/Model
returns no results – why is this and how
can I make it so that both Xpath would correctly return such node selection, as
well as XSchema would be able to validate the same document?
If I define XML file with namespace
prefix: <?xml version="1.0" encoding="utf-8"
?> <TU
xmlns:MyNS="http://www.w3schools.com"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.w3schools.com config.xsd">
<Model Name="Models">
</Model>
</TU> Then XPath selection works fine, but
my validation fails – how can I make this work? Any help would be very appreciated.
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