[HAPI-devel] backward compatible message validation with CanonicalModelClassFactory

[McClendon, C. <cra...@ac...>]

I need to support multiple versions of v2 messages, so I am using a CanonicalModelClassFactory set to version 2.6 to parse all messages as described here:
http://hl7api.sourceforge.net/xref/ca/uhn/hl7v2/examples/HandlingMultipleVersions.html

My problem now comes when parsing older messages that use WITHDRAWN elements, like PID-13, XTN-1.

The HAPI parser throws an exception when it is populated:
ca.uhn.hl7v2.model.DataTypeException: ca.uhn.hl7v2.validation.ValidationException: Validation failed: Primitive value '5551212' requires to be empty because it is withdrawn from the current HL7 version and should not be used at PID-13

The message I am parsing in this case does have "2.3" in the MSH-12. So it appears the validator is not accounting for the version there.

I can turn validation completely off to work around this:
parser.setValidationContext(new NoValidation());

And I suppose I could manipulate the message prior to parsing it.

But I would prefer a different solution.
Either:
1) Is there is a way to get the validation to "honor" the MSH-12 version for the rules it enforces?
Or
2) is there a way to disable specific rules without turning off validation entirely?

Thanks!

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