[DFDL-WG] Progressing DFDL WG Action 066

[Steve Hanson]

To discuss as part of action 066. 

a) IBM has shared the IBM DFDL error messages. They use an IBM-defined 
error number but eventually this should be replaced/augmented by an OGF 
DFDL WG defined code. See Tim's email below, which describes how the XSDL 
spec does this.

b) It was noted that the IBM and Daffodil tdml runners should be 
converged. First step towards this is for IBM to get permission to 
download the Daffodil tests. Steve has kicked this off today.

Perhaps action 066 should be closed and more specific actions spawned for 
the above?

Regards

Steve Hanson
Architect, Data Format Description Language (DFDL)
Co-Chair, OGF DFDL Working Group
IBM SWG, Hursley, UK
smh at uk.ibm.com
tel:+44-1962-815848
----- Forwarded by Steve Hanson/UK/IBM on 18/06/2012 09:38 -----



From:   Tim Kimber/UK/IBM
To:     Mike Beckerle <mbeckerle.dfdl at gmail.com>
Cc:     Steve Hanson/UK/IBM at IBMGB
Date:   13/06/2012 21:42
Subject:        Re: TDML question


Hi Mike,

Fair question. IBM requires all diagnostic messages from its software 
products to be identified by a unique error code. In the IBM test driver 
program, it is this code that we check for.
The XML Schema specification actually assigns unique strings to the 
various types of error that can occur ( e.g. cvc-* ). If the DFDL 
specification did the same then the TDML format would be able to specify 
that the content of the <errors> tag is a list of defined error codes. 
For DFDL v1.0, I think implementers are free to use it in a way that fits 
their own requirements. 

regards,

Tim Kimber, Common Transformation Team,
Hursley, UK
Internet:  kimbert at uk.ibm.com
Tel. 01962-816742 
Internal tel. 246742





From:   Mike Beckerle <mbeckerle.dfdl at gmail.com>
To:     Steve Hanson/UK/IBM at IBMGB, Tim Kimber/UK/IBM at IBMGB
Date:   13/06/2012 20:45
Subject:        TDML question




I'm enhancing the daffodil TDML runner. I want to keep it compatible with 
the IBM one so that we can use TDML files as an interchange medium for 
discussing bugs/semantics/etc.

I added the error feature where one can put expected errors into the TDML 
file.

I have a question about the <error>...</error> element. Which is this: How 
is the string contents of these error elements used?

I tentatively just have it search the error messages created by the parse 
for these error strings. If any actual error message contains the error 
string, then that error "passes".

Here's my example, which is parsing a 2 character integer, which will fail 
because the text is AA, and this is base 10.

<ts:testSuite xmlns:ts={ tdml } suiteName="theSuiteName">
                      <ts:parserTestCase  ID="some identifier" 
name="firstUnitTest" root="data">
                        <ts:document>AA</ts:document>
                        <ts:errors>
                          <ts:error>convert</ts:error> <!-- can have 
several substrings of message -->
                          <ts:error>xs:int</ts:error> <!-- all are checked 
against the message -->
                        </ts:errors>
                      </ts:parserTestCase>
                    </ts:testSuite>

So my test passes so long as the words "convert" and "xs:int" are found in 
the error message that is generated.

Is this consistent with your TDML file usage?

...mikeb



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


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