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| Create model to Parse YAML data in IIB |
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| syedh2993 |
 Posted: Tue Jun 19, 2018 10:47 am Post subject: Create model to Parse YAML data in IIB |
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Newbie
Joined: 19 Jun 2018
Posts: 1
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Hi all,
I want to create message model to parse YAML data in IIB 9. How do I create YAML parser to parse the data?
Since YAML is superset of JSON I cannot use JSON parser right ?
Do I use DFDL parser to create schema then? if so how do I proceed ? |
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| abhi_thri |
| Posted: Wed Jun 20, 2018 12:24 am Post subject: |
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Knight
Joined: 17 Jul 2017
Posts: 516
Location: UK
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hi...yaml support is available for mapping nodes from 10.0.0.6 onwards, see infocenter topic
| Quote: |
| Since YAML is superset of JSON I cannot use JSON parser right ? |
Have you tried it? if so what was the result? |
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| martinb |
| Posted: Wed Jun 20, 2018 3:28 am Post subject: |
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Master
Joined: 09 Nov 2006
Posts: 210
Location: UK
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Hi
IIB does not currently provide a YAML parser.
The IIB JSON parser does not require a message model.
Note the Graphical Data Mapper, which needs a model to visualize the data, can use a JSON schema, or Swagger document formatted in YAML - but the message data would be JSON, and the flow would use the IIB JSON parser.
While you could probably create a DFDL model to parse a specific YAML data structure, it would not be a good approach in my view.
You could consider having the YAML read into the message flow as BLOB data, then use a Java library, such as Jackson, to parse and construct a logical message tree etc.
Also you might consider opening a RFE to get YAML parser support added to IIB. |
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| timber |
| Posted: Wed Jun 20, 2018 3:29 am Post subject: |
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Grand Master
Joined: 25 Aug 2015
Posts: 1292
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@abhi_thri: You're correct that IIB can import a YAML file that specifies the OpenAPI/Swagger metadata for a REST API. But the OP is not trying to solve that problem. They are trying to parse a general-purpose YAML document in the same way that you might parse an XML or a JSON document.
@syedh2993: Not sure that DFDL would be the best solution for a format like YAML. IIB does not have a YAML domain but you could probably parse your YAML using the BLOB domain, then use a Java class library like Jackson to parse it. Or better, write yourself a plug-in parser for IIB and build a message tree from the parsed YAML. |
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