[castor-user] Fwd: Caster Unmarshalling Exception Handling

[nadav steindler]

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