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DFDL parsing Cobol fixed width message

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Danny O

Posted: Tue Mar 19, 2013 1:47 am Post subject: DFDL parsing Cobol fixed width message

Newbie

Joined: 19 Mar 2013
Posts: 2

Hi,
I'm using WMB 8.0.0.1 and I'm working on a flow to translate a Cobol fixed width message to XML. I have used the message model wizard to import the Cobol copybook into the toolkit and with a file input node I'm parsing this in using DFDL. However, when a pass a sample file through I get a parsing error:

Text:CHARACTER:CTDP3002E: Unexpected data found at offset '433' after parsing completed. Data: '0x1A...'.

The sample data is as follows:

1111112222222206400000000000000000000000016829XXXXXXXXXXXXXXXXXXYYYYYYYYYYYYYYYYYY 13028

It's not visible from the above but there is another character on the following line which is value 0x1a. I have been struggling with trying to set this value as a terminator in the DFDL message. Has anyone encountered this as an issue and coded around it?

smdavies99

Posted: Tue Mar 19, 2013 1:53 am Post subject:

Jedi Council

Joined: 10 Feb 2003
Posts: 6076
Location: Somewhere over the Rainbow this side of Never-never land.

Don't use the debugger.

Take a user trace. The DFDL parser will show a lot more information this way. Then post it here so that experts such as Kimbert can help you understand what is going on.
_________________
WMQ User since 1999
MQSI/WBI/WMB/'Thingy' User since 2002
Linux user since 1995

Every time you reinvent the wheel the more square it gets (anon). If in doubt think and investigate before you ask silly questions.

kimbert

Posted: Tue Mar 19, 2013 2:10 am Post subject:

Jedi Council

Joined: 29 Jul 2003
Posts: 5542
Location: Southampton

That 0x1A is an end-of-file marker. You should set the terminator using the DFDL raw byte entity "%#r1A;" ( do not include the quote characters! )
which means 'a literal byte with the value 0x1A'.

You could also use a character entity such as %SUB; but I think that would be less reliable in this case because end-of-file markers seem to be used differently by different applications.

See this page in the DFDL specification for more details on DFDL entities: http://publib.boulder.ibm.com/infocenter/wmbhelp/v8r0m0/topic/com.ibm.dfdl.spec.doc/dfdl_12_2.html

Danny O

Posted: Tue Mar 19, 2013 2:24 am Post subject:

Newbie

Joined: 19 Mar 2013
Posts: 2

I had tried using sub already and that didn't work but with'%#r1a' the message does parse successfully. Many thanks for your help.

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