No, validation rules are additive. Particularly, message rules (e.g. with a
terser expression) do not override primitive rules, they further restrict
the content of a specific field within the bounds of the rules of its
(primitive) type!
I would be reluctant to change the default primitive rules, though, as they
are part of the core HL7 standard... Anyway, if you need a different set of
primitive validation rules, just take a look at the sources of
DefaultValidationBuilderWithoutTN as starting point and define your own
builder.
btw
MSH-6 is not a TN field - message date is MSH-7
Christian
2013/9/25 Andrew Bowden <andrew.bow...@rch.org.au>
> Thanks Christian,****
>
> ** **
>
> That solved my problem but I’m still curious about overriding the default
> validation, is it possible to override the predicate that is set in the
> DefaultValidationWithoutTNBuilder? For example, for a specific segment, if
> I am interested in allowing a space in the TN field using the predicate
> matches(String), I find that the compiler continues to complain at the
> calling of the super. Eg. ****
>
> ** **
>
> <code> ****
>
> public class newValidation extends DefaultValidationWithoutTNBuilder{****
>
> @Override ****
>
> protected void configure(){****
>
> super.configure();****
>
>
> forAllVersions().message("ADT","A01").terser("MSH-6",matches(“.*”));****
>
> }}****
>
> </code>****
>
> ** **
>
> I get a compile time error about failing a primitive for date-time.****
>
> ** **
>
> Is there an easy way to override the default primitive?
>
> Many thanks for your help.****
>
> ** **
>
> Andrew****
>
> ** **
>
> *From:* Christian Ohr [mailto:christian....@gmail.com]
> *Sent:* Monday, 23 September 2013 5:22 PM
> *To:* Andrew Bowden
> *Cc:* hl7api-devel@lists.sourceforge.net
> *Subject:* Re: [HAPI-devel] HAPI 2.1 and overriding validation****
>
> ** **
>
> Hi Andrew,****
>
> note that there is only a (primitive) validation for TN, not for XTN, in
> DefaultValidationBuilder.****
>
> And, there is the DefaultValidationWithoutTNBuilder for exactly the reason
> you mentioned. So subclass this builder instead.****
>
> Hope this helps
> Christian****
>
> ** **
>
> 2013/9/23 Andrew Bowden <andrew.bow...@rch.org.au>****
>
> Hi there,****
>
> ****
>
> I have recently started using HAPI and am impressed by the amount of
> function in the toolkit. I have been struggling for about a week with the
> correct way to override the validation and am hoping that someone on this
> list can help me.****
>
> ****
>
> I have a segment that fails validation for an XTN type (as I am out of the
> US), I would like to keep validation on but change the validation for this
> segment. I realize that I can turn off validation for the message but am
> curious as to the best way to approach this problem. ****
>
> ****
>
> I have tried the HAPI by example method of extending the
> DefaultValidationBuilder and overriding the configure method, however the
> first call to super overrides the rule that I have provided to the method.
> I have also seen an example of extending the ValidationContextImpl (
> http://osdir.com/ml/medical.hl7/2008-07/msg00003.html), but this appears
> to be an older approach to the problem.****
>
> ****
>
> I would appreciate any help that can be provided to point me in the right
> direction.****
>
> ****
>
> Andrew****
>
>
>
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