Re: Validating against a Schema

[Richard Featherstone <R.Featherstone@uea.ac.uk>]

Eric, 

Thanks for your help I understand the second part (i think) use

setValidating(true);

when creating the parser from the factory right?

but I'm still not sure how to set the parser up to use the schema. more
specifically what Java code will do this?


Cheers

Richard


On Fri, 6 Jul 2001, Eric van der Vlist wrote:

> Richard Featherstone wrote:
> > 
> > Could someone either tell me how or point me in the right direction to
> > find out how to validate an XML doc against a Schema using Java.  I can
> > parse without validating but don't know
> > 
> > a) how the parser can decide what Schema is being used from the XML doc
> > and where to locate it
> 
> First thing, you need to use a XML parser that supports W3C XML Schema
> such as Xerces-J [1] (1.4.1 or above) .
> 
> Then, the parser will have 3 ways to locate the schema to use.
> 
> 1) Parsers are required to provide an implementation specific way to
> define the schema locations as parameters.
> 
> Xerces-J does this through the                
> http://apache.org/xml/properties/schema/external-schemaLocation and
> http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation
> properties.
> 
> 2) Using the xsi:schemaLocation and xsi:noNamespaceSchemaLocation
> attributes in the instance document.
> 
> 3) Trying to dereference the URI associated with the namespace to see if
> there is a schema at this location.
>  
> > 
> > b) how to configure the parser to validate the doc against the schema
> 
> Using the "isValidating" method.
>  
> > I apologise if this is the wrong place to ask a question like this but
> > I've spent days looking everywhere for the answer.
> 
> You should have asked before ;=)
> 
> Hope this helps.
> 
> Eric
> 
> [1] http://xml.apache.org/xerces-j/index.html
> 
> > 
> > thanks in advance
> > 
> > Richard
> > 
> -- 
> See you at XTech in San Diego.
>              http://conferences.oreillynet.com/cs/os2001/view/e_spkr/790
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