[DFDL-WG] still no need for fn:error

[Mike Beckerle]

Respin of this example:

Here's the example as suggested by Jonathan of how to issue an error that I
previously was suggesting needed fn:error. I'm convinced this is sufficient
and we can avoid the need for fn:error now.

<xs:element name="magic_number" type="ex:uint32" dfdl:byteOrder="bigEndian">
 <xs:annotation>
   <xs:appinfo source="*http://www.ogf.org/dfdl/*<http://www.ogf.org/dfdl/dfdl-1.0/>
">
     <dfdl:assert
       test="{ (xs:unsignedInt(.) eq *dfdl:unsignedInt('xa1b2c3d4')*) |
               (xs:unsignedInt(.) eq *dfdl:unsignedInt('xd4c3b2a1')*) }"
       message="{ fn:concat(
                     'Magic number ',
                     dfdl:hexBinary(dfdl:unsignedInt(.)),
                     ' was not 0xA1B2C3D4 (for bigEndian) or 0xD4C3B2A1
(for littleEndian).' }" />
   <dfdl:setVariable ref="ex:bOrd">{ xs:unsignedInt(.) }<dfdl:setVariable>
   </xs:appinfo>
 </xs:annotation>
</xs:element>


On Wed, Jul 24, 2013 at 11:58 AM, Steve Hanson <smh at uk.ibm.com> wrote:

> Mike,  I think you meant:
>
>        test="{ (xs:unsignedInt(.) eq *dfdl:unsignedInt('xa1b2c3d4')*) |
>                (xs:unsignedInt(.) eq *dfdl:unsignedInt('xd4c3b2a1')*) }"
>
>
> Regards
>
> Steve Hanson
> Architect, IBM Data Format Description Language (DFDL)
> Co-Chair, *OGF DFDL Working Group* <http://www.ogf.org/dfdl/>
> IBM SWG, Hursley, UK*
> **smh at uk.ibm.com* <smh at uk.ibm.com>
> tel:+44-1962-815848
>
>
>
> From:        Mike Beckerle <mbeckerle.dfdl at gmail.com>
> To:        dfdl-wg at ogf.org,
> Date:        24/07/2013 16:46
> Subject:        [DFDL-WG] still no need for fn:error
> Sent by:        dfdl-wg-bounces at ogf.org
> ------------------------------
>
>
>
> Here's the example as suggested by Jonathan of how to issue an error that
> I previously was suggesting needed fn:error. I'm convinced this is
> sufficient and we can avoid the need for fn:error now.
>
> <xs:element name="magic_number" type="ex:uint32"
> dfdl:byteOrder="bigEndian">
>  <xs:annotation>
>    <xs:appinfo source="*http://www.ogf.org/dfdl/*<http://www.ogf.org/dfdl/dfdl-1.0/>
> ">
>      <dfdl:assert
>        test="{ (xs:unsignedInt(.) eq *dfdl:unsignedInt('xa1b2c3d4')*) |
>                (xs:unsignedInt(.) eq *dfdl:unsignedInt('xd4c3b2a1')*) }"
>        message="{ fn:concat(
>                      'Magic number ',
>                      dfdl:hexBinary(dfdl:unsignedInt(.)),
>                      ' was not 0xA1B2C3D4 (for bigEndian) or 0xD4C3B2A1
> (for littleEndian).' }" />
>    <dfdl:setVariable ref="ex:bOrd">{ xs:unsignedInt(.) }<dfdl:setVariable>
>    </xs:appinfo>
>  </xs:annotation>
> </xs:element>
>
>
> --
> Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology | *
> www.tresys.com* <http://www.tresys.com/>
> --
>  dfdl-wg mailing list
>  dfdl-wg at ogf.org
>  https://www.ogf.org/mailman/listinfo/dfdl-wg
>
> Unless stated otherwise above:
> IBM United Kingdom Limited - Registered in England and Wales with number
> 741598.
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>



-- 
Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology |
www.tresys.com
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