Re: [Chiba-users] Use of schema attribute in model tag

surabhi-d0BvcczcKTUAvxtiuMwx3w@xxxxxxxxxxxxxxxx wrote:
> Hi ,
>
> What does "schema" attribute in model tag signify ?
that's pretty spec-conformant. you can read about all details in the 
spec but here's a short version:
it allows you to link to an external XML Schema with datatype 
definitions - to be exact only datatype definitions in the referenced 
file will be loaded (in contrast to structural ones).
these types may then be used with xforms:bind elements to define the 
type of the instance node the bind is pointing to. sure, these will then 
be revalidated during revalidate calls.
> <xforms:model xforms:id="model_0" 
> *xforms:schema*="xforms/purchaseOrderRepeats/purchaseOrderRepeats.xsd">
> Will the  constraints specified in schema validated by the chiba servlet 
> ? We want to validate the data directly using the model schema instead 
> of explicitly giving bind constraints.Is it possible ?
the servlet is only the wrapper - the actual work does ChibaBean which 
represents the core XForms processor.
revalidation of schemas sure is possible during init/submit (even 
structural one) but not during revalidate processing. this would make 
not much sense cause most often you can't map an validation error to one 
specific instance node and even more the messages you get from a 
validation xml parser wouldn't be adequate as user message and not even 
easily mappable to such.
note, that the xforms spec only specifies schema datatype validation 
(schema part 1) as requirement and does not include or require 
structural validation (part 2 of the spec).
but luckily Chiba contains a method to validate even full schemas (part 
1+2) even if you have to hack your own connectors to use it. if 
interested look at 
org.chiba.xml.xforms.connector.AbstractConnector.validateSchema(...)
joern
> Regards,
> Surabhi Asthana
> Team Leader
> Spend Data Management
> ZYCUS INC.
> Ph : ++ 91 22 5640 7676 Extn. : 7803

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