[DFDL-WG] Direct Dispatch case insensitivity on matching

[Steve Hanson]

Agreed on WG call that the match should be case-sensitive and that 
dfdl:ignoreCase is not used as these are not representation properties.

Regards
 
Steve Hanson
Architect, IBM DFDL
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh at uk.ibm.com
tel:+44-1962-815848



From:   Andrew Edwards/UK/IBM at IBMGB
To:     dfdl-wg at ogf.org, 
Date:   25/06/2014 17:30
Subject:        [DFDL-WG] Direct Dispatch case insensitivity on matching
Sent by:        dfdl-wg-bounces at ogf.org



In section 15 Choices, we define the direct dispatch method of choice 
resolution.  For the choiceDispatchKey, we make the statements that... 

The expression must evaluate to an xs:string which must not be the empty 
string. 

and 

The resultant string must match the dfdl:choiceBranchKey property value of 
one of the element branches of the choice. This match is case insensitive. 


The use of a case insensitive match can be a bit of a performance 
inhibitor, and given that direct dispatch is intended to aid performance 
optimising the model, it kinda gets in the way.  If an end user needs case 
insensitive searches then they can always define all of their branchKeys 
in one case and manually fold the dispatchKey into that case in their 
expression (toLower/toUpper).  Can I propose that we remove the criteria 
that the match be case insensitive. 

The ignoreCase option may also play a part here. 

Cheers, 
Andy 
Andy Edwards - IBM Integration Bus - DFDL 


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