Hi I have a requirement which is like: There is x9.2 specification message e.g.
Header format for 97xx message
Data Item Field Name Attribute
006 MSG.TYPE 4 N
001 MSG.FROM 6 CHR
015 MSG.REPLY 1 CHR
017 MSG.TRACE 6 N
002 MSG.DATE 8 N
003 MSG.TIME 4 N
004 MSG.SESSION 6 N
009 MSG.MEMBER 11 N
018 MSG.RECORD 7 N
9701 ACCESS AUTHORIZATION REQUEST
STANDARD HEADER
Data Item Field Name Attribute
133 MSG.HBAC 8 N
230 MSG.DISCLAIMED 1 CHAR
I NEED TO CONVERT THIS TO A XML USING DFDL.
Sample XML
<ROOT>
<Header>
<MSG.TYPE></MSG.TYPE>
.
.
.
.
<MSG.RECORD></MSG.RECORD>
</Header>
<Body>
<MSG.HBAC></MSG.HBAC>
<MSG.DISCLAIMED></MSG.DISCLAIMED>
</Body>
</ROOT>
The problem now is that x9.2 specification messages can have different fields for different message type like above is example for 9701.
But 9702 will have different set of data item. So how to write a dfdl parser which can parse all the message type whether its 97xx series or 95xx series or any other series of x9.2 specification.
I have never worked with this specific format. But a DFDL model accommodates the possibility of different message types with choices (points of uncertainty) and uses either discriminators or initiators to resolve the choices. Begin by reading this link for background. Then go here and get the PDF for Lab 6.