[xml] Re: validating an xmlNode without an xmlDoc - solution

[David Grohmann <grohmann arlut utexas edu>]

David Grohmann wrote:
> I have code that generates and xmlNode tree that conforms to an XML 
> schema.
>
> To make sure I validate it against the schema.
>
> libxml2 gives the error below.
> "Schemas validity error : Internal error: xmlSchemaVStart, no instance 
> to validate."
>
> which is generated roughly on line 27679 in the newest cvs of 
> xmlschemas.c 
> http://cvs.gnome.org/viewcvs/libxml2/xmlschemas.c?rev=1.202&view=log
>
> Now this is because we called xmlSchemaValidateOneElement( 
> schema_validation_context, generated_node )
> since this node never was associated with a  document 
> schema_validation_context->doc is NULL
>
> Tree validation used to work like this in an older version of libxml2. 
> (2.6.17 I believe)
>
> 1. Why is a document required now?
>
> 2. How do I create an xmlDoc and associate it with  my root node
> or in other words make my rootnode the children of the document?
fixed my own problem, just had to add this code before I validated

   doc = xmlNewDoc(BAD_CAST "1.0");
   xmlDocSetRootElement(doc, node);
   //validation code;

--
David Grohmann
Senior Student Associate
Applied Research Lab : UT Austin : ESL - S206
Office: 512-835-3237
Cell: 210-861-6882