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question asked: Nov 29 '21, 4:13 a.m.
question was seen: 1,329 times
last updated: Dec 16 '21, 7:09 a.m.

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Get module structure URI via rest API

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S C (13●3) | asked Nov 29 '21, 4:13 a.m.

I want to get the module structure in json format using REST API in DNG version 7.0.2. I have referred to the page here: https://jazz.net/wiki/bin/view/Main/DNGModuleApiScenario2

But I am stuck because I am unable to get the module structure URI. (For e.g: https://clmwb.com:9444/rdm/resources/_4sscEb43EeeD0-df1VhHuw/structure)

Could someone please help me on how to get this URI via REST API?

Comments
Ralph Schoon commented Nov 29 '21, 4:46 a.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER

 Check the URI root. it ends with 'rdm' and not with 'rm' so it is likely not a requirement module and has no module structure.

Accepted answer

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Ian Barnard (2.3k●7●14) | answered Nov 29 '21, 5:37 a.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER
edited Dec 16 '21, 7:09 a.m.
Hi

For the module structure API it's important to:
  • Don't construct the structure URL, get it from the module definition by doing a GET on the module URL using the following settings:
  • Provide header (capitalised exactly like this)
    • DoorsRP-Request-Type: public 2.0
  • Do NOT provide header OSLC-Core-Version
  • Provide the configuration using header vvc.configuration and NOT using header Configuration-Context or query ?oslc_config.context - so it must be a local configuration URL not a global configuration
Once you've done the GET the XML includes the structure URL like:
For 7.0.2 I'd expect the UUID part of your module URL  to start with MD_ as shown above - you can get this link through the browser by finding the module and then Share link to artifact.

When you GET the structure URL use the same headings as the first GET (i.e. for RDF), the result will be like:

<rdf:RDF
    xmlns:dcterms="http://purl.org/dc/terms/"
    xmlns:oslc_core="http://open-services.net/ns/core#"
    xmlns:oslc_config="http://open-services.net/ns/config#"
    xmlns:jazz_rm="http://jazz.net/ns/rm#"
    xmlns:rm_types="http://www.ibm.com/xmlns/rdm/types/"
    xmlns:process="http://jazz.net/ns/process#">
    <j.0:childBindings rdf:parseType="Collection">
        <j.0:isHeading rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean"
        >true</j.0:isHeading>
        <oslc_config:component rdf:resource="https://jazz.ibm.com:9443/rm/cm/component/__J_JEEB6Eeuh3Iiax2L3Ow"/>
        <j.0:boundArtifact rdf:resource="https://jazz.ibm.com:9443/rm/resources/TX__0wkYUB6Eeuh3Iiax2L3Ow"/>
        <j.0:childBindings rdf:parseType="Collection">
            <j.0:isHeading rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean"
            >false</j.0:isHeading>
            <oslc_config:component rdf:resource="https://jazz.ibm.com:9443/rm/cm/component/__J_JEEB6Eeuh3Iiax2L3Ow"/>
            <j.0:boundArtifact rdf:resource="https://jazz.ibm.com:9443/rm/resources/TX__2GBIkB6Eeuh3Iiax2L3Ow"/>
            <j.0:module rdf:resource="https://jazz.ibm.com:9443/rm/resources/MD__y90_0B6Eeuh3Iiax2L3Ow"/>
            <j.0:childBindings rdf:resource="http://www.w3.org/1999/02/22-rdf-syntax-ns#nil"/>
          </j.0:Binding>
            <j.0:isHeading rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean"
            >true</j.0:isHeading>
            <oslc_config:component rdf:resource="https://jazz.ibm.com:9443/rm/cm/component/__J_JEEB6Eeuh3Iiax2L3Ow"/>
            <j.0:boundArtifact rdf:resource="https://jazz.ibm.com:9443/rm/resources/TX__0dCdUB6Eeuh3Iiax2L3Ow"/>
            <j.0:module rdf:resource="https://jazz.ibm.com:9443/rm/resources/MD__y90_0B6Eeuh3Iiax2L3Ow"/>
            <j.0:childBindings rdf:parseType="Collection">
              <j.0:Binding rdf:about="https://jazz.ibm.com:9443/rm/resources/BI__yq5tUB6Eeuh3Iiax2L3Ow">
                <j.0:isHeading rdf:datatype="http://www.w3.org/2001/XMLSchema#boolean"
                ....

If you get the structure with Accept: application/json you get a, err, JSON structure looking like this:

[ {
  "type" : "dng_module:Binding",
  "isStructureRoot" : "true",
  "isHeading" : false,
}, {
  "type" : "dng_module:Binding",
  "isHeading" : true,
}, {
  "type" : "dng_module:Binding",
  "isHeading" : false,
  "childBindings" : [ ]
}, {
  "type" : "dng_module:Binding",
  ....


There's a Python example of accessing the module structure which as a demonstration prints out the indented content and section number in my public OSS package here https://github.com/IBM/ELM-Python-Client/blob/master/elmclient/examples/dn_simple_modulestructure.py

HTH
Ian
S C selected this answer as the correct answer
Comments
S C commented Dec 06 '21, 2:37 p.m.

Thank you Ian. I was able to get module structure from DNG. 

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