Sorry, but that question just does not make sense to me ..
;-(. How is the mapping file related to XMl schema validation ?
Werner
Wait--so even though validation is set to true in the Unmarshaller, it's won't actually do it unless I make a mapping file, etc??
From: nadav steindler [mailto:[EMAIL PROTECTED]
Sent: Dienstag, 14. November 2006 12:01
To: [email protected]
Subject: Re: [castor-user] Fwd: Caster Unmarshalling Exception Handling
On 11/13/06, Stephen Bash <[EMAIL PROTECTED]> wrote:Nadav-
You can have Castor do validation while it is parsing the file into
Java objects. There's a how-to document online:
http://castor.org/how-to-enable-xml-validation.html
Unfortunately in my experience the validation exceptions aren't
particularly easy to read either, so I would suggest catching the
validation exception and attempting to get the useful information out
of them before printing/throwing a useful error message.
HTH,
Stephen
On 11/13/06, nadav steindler <[EMAIL PROTECTED]> wrote:
> Hi James, thanks for the quick response.
>
> So I have a W3C schema defined for the file.
>
> Theoretically, I could just tell the systems engineer to validate the file
> with XMLSpy, however the requirements for this project are that the
> validation needs to be done by the java servlet I'm writing and that my
> program needs to do the validation and print out clear error messages if the
> xml file has problems. Are there any java libraries that do this?
>
> Nadav
>
>
> On 11/13/06, James Abley <[EMAIL PROTECTED]> wrote:
> > Validate the XML first, using DTD, RELAX NG, W3C Schema or similar?
> >
> > James
> >
> > nadav steindler wrote:
> > >
> > > How do I parse an xml file and build a parse tree of caster-generated
> > > objects and get it to produce error messages a systems engineer can
> > > understand(short, with line numbers, with no reference to internals of
> > > the code such as classes), rather than:
> > >
> > > "The following exception occured while validating field: _firstVersion
> > > of class:
> com.nds.castorgenericformat.AMSGenericConversionFormat: The
> > > following exception occured while validating field:
> > > _firstVersionDefTypeHeader of class:
> > > com.nds.castorgenericformat.FirstVersion : The
> following exception
> > > occured while validating field: _headerTypeInput of class:
> > > com.nds.castorgenericformat.FirstVersionDefTypeHeader :
> The following
> > > exception occured while validating field:
> > > _groupOfSTBMessageFieldDefsList of class:
> > > com.nds.castorgenericformat.HeaderTypeInput: The
> following exception
> > > occured while validating field: _flagsByte of class:
> > > com.nds.castorgenericformat.GroupOfSTBMessageFieldDefs
> : The field
> > > '_name' (whose xml name is 'name') is a required field of class
> > > 'com.nds.castorgenericformat.FlagsByte"
> > >
> > >
> > > Which is what happens when I do:
> > >
> > > try
> > > {
> > > //Set up a Unmarshaller
> > > Unmarshaller unmarshaller = new
> > > Unmarshaller(AMSGenericConversionFormat.class);
> > >
> > > // Build parse tree from file
> > > AMSGenericConversionFormat genericFormat =
> > >
> (AMSGenericConversionFormat)unmarshaller.unmarshal(reader);
> > >
> > > }
> > > catch (MarshalException e1)
> > > {
> > > system.out.println(e1.getMessage());
> > > }
> > > catch (ValidationException e2)
> > > {
> > > system.out.println(e2.getMessage());
> > > }
> > >
> > >
> > >
> > >
> > > I'd rather get something like:
> > >
> > > "error line 52 in foo.xml, attribute "name" is missing"
> > >
> > >
> > >
> > >
> > > Thanks,
> > >
> > > Nadav
> >
> >
> >
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