Should name be dfdl:stringFromStringLiteral to mirror existing dfdl:stringLiteralFromString (or should the latter be dfdl:stringToStringLiteral - follows the Java toString() pattern) ?

Regards

Steve Hanson
Architect, Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848



From:        Steve Hanson/UK/IBM
To:        Mike Beckerle <mbeckerle.dfdl@gmail.com>,
Cc:        dfdl-wg@ogf.org, dfdl-wg-bounces@ogf.org
Date:        12/12/2012 17:20
Subject:        Re: [DFDL-WG] Proposed Errata: New function dfdl:stringLiteralToString

---

Mike, should we disallow DFDL Character Class entities also ?

Regards

Steve Hanson
Architect, Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848




From:        Mike Beckerle <mbeckerle.dfdl@gmail.com>
To:        dfdl-wg@ogf.org,
Date:        12/12/2012 15:40
Subject:        [DFDL-WG] Proposed Errata: New function dfdl:stringLiteralToString
Sent by:        dfdl-wg-bounces@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;")) }'



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

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Unless stated otherwise above:
IBM United Kingdom Limited - Registered in England and Wales with number 741598.
Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU