Re: [HAPI-devel] Lead spacing trimming

[James A. <jam...@gm...>]

Hi David,

I'm not sure I could provide an answer as to why, given that this behaviour
has existed in the library for roughly 15 years now.

I would be nervous about changing it given how longstanding it has existed,
but I can tell you that you can disable it by setting validation to
NoValidation (it's the validation engine that causes this trimming).

Cheers,
James

On Wed, May 24, 2017 at 11:37 PM, David Bunzli <
Dav...@he...> wrote:

> Hi,
>
>
>
> I’m experiencing a situation where an NTE-3 field handled by HAPI is
> trimming leading spaces, eg ‘  an FT string’ -> ‘an FT string’. My
> investigation lead me to the HAPI FAQ link http://hl7api.sourceforge.net/
> hapi-faq.html#leading_space which describes this behaviour for FT, ST and
> TX fields.
>
>
>
> My questions are:
>
> ·         why does HAPI trim leading spaces given that the HL7 v2.4 spec
> ‘Chapter 2.9.48 TX – text data’ says ‘Leading spaces should be included’?
>
> ·         I can’t find any reference in the rest of the HL7 v2.4 spec
> which mentions the trimming of leading spaces. Have I missed this, or why
> has HAPI chosen to trim?
>
>
>
> Regards,
>
> David Bunzli
>
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