[DFDL-WG] defining dfdl:terminator and dfdl: initiator using length

[Tim Kimber]

Usually an initiator acts as an identifier for the data. In your case, it 
sounds as if you simply want to skip over some leading/trailing data.

Possible solutions:
- define hidden elements of the required lengths. You will need to put 
each element into a global group and refer to the group via a 
hiddenGroupRef annotation. That may sound awkward, but it ensures that the 
parsed infoset can be validated against the xsd. 
- if the initiators and terminators have a known length in bytes then you 
could use ( misuse? ) leadingSkip and trailingSkip to ignore them.

regards,

Tim Kimber, DFDL Team,
Hursley, UK
Internet:  kimbert at uk.ibm.com
Tel. 01962-816742 
Internal tel. 37246742




From:   Miguel Vieira <carlos.vieira at gmv.com>
To:     "dfdl-wg at ogf.org" <dfdl-wg at ogf.org>
Date:   30/08/2012 14:14
Subject:        [DFDL-WG] defining dfdl:terminator and dfdl: initiator 
using length
Sent by:        dfdl-wg-bounces at ogf.org



Hello!
 
Is it possible to define the initiator and terminator using their length? 
I know my data will have an initiator and a terminator, but not what they 
will be, only that they will exist and their length.
If it’s not possible, what is the best way to accomplish this?
 
R,
Miguel
 
 
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