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| DFDL and XML Parsing |
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| ChingChak |
 Posted: Wed Feb 27, 2013 8:35 am Post subject: DFDL and XML Parsing |
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Newbie
Joined: 13 Feb 2013
Posts: 3
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In WMB v7, we used to hold an MRM that could have some physical formats. CSV, CWF, XML, etc.
1. Now, I'm trying to understand - is the DFDL domain can hold only physical format?
If for example I have CPY file (COBOL) which was generated to DFDL,
and I want to map it to a same XSD, shall I have to hold another XSD
Schema?
(For example: I created message in DFDL in Compue node -> RCD (a dfdl definition)-> RCD (xmlnsc domain), and it fails in the last RCD for "XML Parsing Error" (with nothing in the ExceptionList...))
What's wrong?
2. In WMB v7 we could create mxsd out of COBOL file, and then
generate XML from this MXSD. is there a way to do the same in WMB v8?
can't find how...
Thanks,
Ching. |
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| kimbert |
| Posted: Wed Feb 27, 2013 9:28 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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The DFDL domain is not for XML data ( or JSON, or MIME, or any other format for which a specific domain is already provided ).
| Quote: |
If for example I have CPY file (COBOL) which was generated to DFDL,
and I want to map it to a same XSD, shall I have to hold another XSD
Schema? |
No - a DFDL xsd is just an ordinary xsd. It just happens to contain some annotations that a DFDL processor can use. So you can use the same XSD.
| Quote: |
2. In WMB v7 we could create mxsd out of COBOL file, and then
generate XML from this MXSD. is there a way to do the same in WMB v8?
can't find how... |
Yes - SET OutputRoot.XMLNSC = InputRoot.DFDL;
btw, you should not have been using the MRM XML physical format in v7. XMLNSC has been the recommended XML parser since v6.1. |
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| ChingChak |
| Posted: Wed Feb 27, 2013 11:52 pm Post subject: |
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Newbie
Joined: 13 Feb 2013
Posts: 3
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| kimbert wrote: |
The DFDL domain is not for XML data ( or JSON, or MIME, or any other format for which a specific domain is already provided ).
| Quote: |
If for example I have CPY file (COBOL) which was generated to DFDL,
and I want to map it to a same XSD, shall I have to hold another XSD
Schema? |
No - a DFDL xsd is just an ordinary xsd. It just happens to contain some annotations that a DFDL processor can use. So you can use the same XSD.
| Quote: |
2. In WMB v7 we could create mxsd out of COBOL file, and then
generate XML from this MXSD. is there a way to do the same in WMB v8?
can't find how... |
Yes - SET OutputRoot.XMLNSC = InputRoot.DFDL;
btw, you should not have been using the MRM XML physical format in v7. XMLNSC has been the recommended XML parser since v6.1. |
Thanks,
It seems that my 2nd question wasn't clear:
I want to create XSD from copybook.
in WMB v7 we created mxsd from the copybook,
and then generated XSD from the mxsd.
how can it be done in WMB v8? |
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| kimbert |
| Posted: Thu Feb 28, 2013 2:05 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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Let me repeat - a DFDL XSD is just an ordinary XSD. You can use it to validate an XML document. You can import it into other applications. There is no need for an 'export' feature with DFDL.
MRM message sets did need an 'export' feature because the .mxsd files contained incompatible extensions to the XML Schema language ( 'unorderedSet' for instance ). Before someone asks, DFDL does allow unordered data, but it insists that the message tree is built in-order so it is not an *incompatible* extension. |
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| MrSmith |
| Posted: Wed Oct 22, 2014 2:48 am Post subject: |
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Master
Joined: 20 Mar 2008
Posts: 215
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Kimbert unless I have also misunderstood what ChingChak was trying to say, I think, was that he meant they use the import of the COBOL copybook to generate a mxsd and then use that to generate a XSD and are using it as a lazy way of generating the xsd rather than doing the conversion form copybook to xsd manually, I think (and I could be completely wrong here) he was seeing if in V8 there was a similar "exporting" option but think he will find that if he creates the DFDL from a copybook it will create his required XSD; which as you have said is then like any other XSD, correct ??
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“Outside of a dog, a book is man's best friend. Inside of a dog it's too dark to read.” |
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| kimbert |
| Posted: Wed Oct 22, 2014 3:30 am Post subject: |
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Jedi Council
Joined: 29 Jul 2003
Posts: 5542
Location: Southampton
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You're correct - that is exactly what ChingChak was asking. I could have just answered 'Use the DFDL xsd'. But that would have been less helpful to ChingChak and future readers of this thread.
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Before you criticize someone, walk a mile in their shoes. That way you're a mile away, and you have their shoes too. |
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