RE: [xml] On validating a DOM with a schema, in Python

["Meunier, Jean-Luc" <Jean-Luc Meunier xrce xerox com>]

Ok, thanks Kasimier for this good pointer to the test suite file "xstc/xstc.py".

So here are the steps (note that in xstc.py the error cases are properly handled) 

JL


# inspired from the test suite file "xstc/xstc.py"
# thanks to Kasimier Buchcik
#
import libxml2

ctxt = libxml2.schemaNewParserCtxt("my-schema.xsd")
schema = ctxt.schemaParse()
del ctxt

validationCtxt = schema.schemaNewValidCtxt()

doc = libxml2.parseFile("test.xml")

#instance_Err = validationCtxt.schemaValidateFile(filePath, 0)
instance_Err = validationCtxt.schemaValidateDoc(doc)

del validationCtxt
del schema
doc.freeDoc()

if instance_Err != 0:
    print "VALIDATION FAILED"
else:
    print "VALIDATED"


-----Original Message-----
From: xml-bounces gnome org [mailto:xml-bounces gnome org] On Behalf Of Kasimier Buchcik
Sent: Tuesday, October 25, 2005 5:44 PM
To: Meunier, Jean-Luc
Cc: ML-libxml2
Subject: Re: [xml] On validating a DOM with a schema, in Python

Hi,

On Tue, 2005-10-25 at 17:14 +0200, Meunier, Jean-Luc wrote:
> Hi,
>
>  
>
> In Python, I need to validate a DOM tree using a W3C XML schema, but I cannot figure out how to do it. 
>  
> It seems that the C-function  xmlSchemaValidateDoc does the job but  I'm lost in the Python binding.
>  
>  
> ( My (naïve) trials were in the style:
>   schemadoc = libxml2.parseFile("my-schema.wxs")
>   schema = libxml2.Schema(schemadoc)
>   ctxt = libxml2.SchemaValidCtxt(schema)
>   #ctxt.schemaParse() ??
>   doc = libxml2.parseFile("test.xml")
>    res = doc.schemaValidateDoc(ctxt)
> )
>  
> Is there anyone around that can show me the way? (I insist, that it is about validating a DOM already in 
> memory)
>  
> Thanks,
>  
> JL

I'm heading home, so just a short one: maybe the test suite
file "xstc/xstc.py" can be of some help; it uses schemaValidateDoc()
as well as schemaValidateFile() for stream-based validation.

Regards,

Kasimier


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