[DFDL-WG] Fw: comments on DFDL spec v.43

[Suman Kalia]

Suman Kalia
IBM Toronto Lab
WebSphere Message Broker Toolkit Architect and Development Lead
WebSphere Business Integration Application Connectivity Tools 

http://www.ibm.com/developerworks/websphere/zones/businessintegration/wmb.html


Tel : 905-413-3923  T/L  969-3923
Fax : 905-413-4850 T/L  969-4850
Internet ID : kalia at ca.ibm.com
----- Forwarded by Suman Kalia/Toronto/IBM on 10/13/2010 11:09 AM -----

From:   Suman Kalia/Toronto/IBM
To:     Steve Hanson/UK/IBM at IBMGB
Cc:     Alan Powell/UK/IBM at IBMGB, Tim Kimber/UK/IBM at IBMGB
Date:   10/12/2010 11:17 AM
Subject:        Re: comments on DFDL spec v.43


Steve - We would also need to update the table on page 81 section 13.1, 
13.7  to include binary as the enumeration for Decimal, Integer and 
nonNegativeInteger.  Section 22 "Property precedence" would also need to 
be updated for this change..

Suman Kalia
IBM Toronto Lab
WebSphere Message Broker Toolkit Architect and Development Lead
WebSphere Business Integration Application Connectivity Tools 

http://www.ibm.com/developerworks/websphere/zones/businessintegration/wmb.html


Tel : 905-413-3923  T/L  969-3923
Fax : 905-413-4850 T/L  969-4850
Internet ID : kalia at ca.ibm.com



From:   Steve Hanson/UK/IBM at IBMGB
To:     Suman Kalia/Toronto/IBM at IBMCA
Cc:     Alan Powell/UK/IBM at IBMGB, Tim Kimber/UK/IBM at IBMGB
Date:   10/12/2010 11:07 AM
Subject:        Re: comments on DFDL spec v.43


Hi Suman

1. Agree.

2. Yes I'd flagged this too, needs a rewrite.

Regards

Steve Hanson
Strategy, Common Transformation & DFDL
Co-Chair, OGF DFDL WG
IBM SWG, Hursley, UK,
smh at uk.ibm.com,
tel +44-(0)1962-815848




From:
Suman Kalia/Toronto/IBM at IBMCA
To:
Alan Powell/UK/IBM at IBMGB
Cc:
Steve Hanson/UK/IBM at IBMGB, Tim Kimber/UK/IBM at IBMGB
Date:
12/10/2010 15:29
Subject:
comments on DFDL spec v.43


I read the spec over the weekend but mainly focused on the changes for 
V.43. 

1. I think there is an omission of property dfdl:binaryDecimalVirtualPoint 
when the  dfdl:binaryNumberRep enumeration  binary . 

The COBOL type PIC 99V99 COMP  has an implied decimal point position 2 but 
it's physical representation is binary integer.. The logical 
representation for this type is decimal but physical representation is 
binary integer. The dfdl:binaryNumberRep enumeration  binary  is  the 
closest match  but it does not have property 
dfdl:binaryDecimalVirtualPoint. 

- "S99V99 USAGE COMP" case,
        The serialized value for 123 would be binary value (i.e. x'007B'), 
since 99v99 COMP means binary integer



2. Section 18 External Control of DFDL processor

This section was written long ago. With the changes in scoping rules and 
no support for selectors in DFDL V1.0 of spec, we cannot support multiple 
physical representation for the same logical model and the following text 
needs revision.  Note we cannot disambiguate among multiple dfdl:format 
annotations if specified at the schema level as we do not selectors. 

>> A DFDL Schema can contain more than one format definition. For example, 
both a binary and a text format definition can be provided so that the 
same logical data can be described both ways within >> the same DFDL 
schema. DFDL Schemas can also be parameterized by external variables,.
>> To allow one to associate a format definition with a top-level element 
declaration at run time DFDL allows the top-level element declarations to 
omit a dfdl:format annotation. 



Suman Kalia
IBM Toronto Lab
WebSphere Message Broker Toolkit Architect and Development Lead
WebSphere Business Integration Application Connectivity Tools 

http://www.ibm.com/developerworks/websphere/zones/businessintegration/wmb.html


Tel : 905-413-3923  T/L  969-3923
Fax : 905-413-4850 T/L  969-4850
Internet ID : kalia at ca.ibm.com

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