[DFDL-WG] Proposed Errata: New function dfdl:stringLiteralToString

[Mike Beckerle]

Yes, character class entites aren't meaningful in this context. Might as
well save people from the mistake.

On Wed, Dec 12, 2012 at 12:25 PM, Steve Hanson <smh at uk.ibm.com> wrote:

> Mike, should we disallow DFDL Character Class entities also ?
>
> Regards
>
> Steve Hanson
> Architect, 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:        12/12/2012 15:40
> Subject:        [DFDL-WG] Proposed Errata: New function
> dfdl:stringLiteralToString
> Sent by:        dfdl-wg-bounces at ogf.org
> ------------------------------
>
>
>
>
> Proposed Errata:  The following function is provided to assist in creating
> data that contains characters expressed using DFDL String Literal syntax.
>
> dfdl:stringLiteralToString($arg)
>
> Returns a string constructed from the $arg string argument. If $arg
> contains syntax matching DFDL Character Entites syntax, then the
> corresponding characters are used in the result.  Any characters in $arg
> not matching the DFDL Character Entities syntax remain unchanged in the
> result.
>
> Note that DFDL Byte Value Entities are not allowed. It is a schema
> definition error if $arg contains syntax matching DFDL Byte Value Entities
> syntax.
>
> Use this function when you need to create a value which contains
> characters for which DFDL Character Entities are needed.  An example is to
> create data containing the NUL (character code 0) codepoint. This character
> code is not allowed in XML documents, including DFDL Schemas; hence, it
> must be specified using a DFDL Character Entity. Within a DFDL Expression,
> use this function to obtain a string containing this character.
>
> Example: dfdl:outputValueCalc='{ fn:concat(../x,
> dfdl:stringLiteralToString("%NUL;")) }'
>
>
>
> --
> Mike Beckerle | OGF DFDL WG Co-Chair | Tresys Technologies
> Tel:  781-330-0412
>
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>



-- 
Mike Beckerle | OGF DFDL WG Co-Chair | Tresys Technologies
Tel:  781-330-0412
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