Linking two artifacts using RRC API

0	Brati Sankar Ghosh (6●3●3) \| asked Sep 12 '12, 7:14 a.m. Is it possible to link two artifacts in RRC using the rest service APIs?

3 answers

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Gabriel Ruelas (1.1k●1●3) | answered Sep 12 '12, 9:51 a.m.

It is possible to link two artifact using an OSLC defined link type. Linking with an internal link type is not supported.

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Brati Sankar Ghosh commented Sep 13 '12, 7:18 a.m.

Hi Gabriel, can you please guide us to some examples/documents on the above topic.

permanent link

Gabriel Ruelas (1.1k●1●3) | answered Sep 13 '12, 11:43 a.m.

Assuming that you already got the artifact URL of both artifacts to be linked:
Note: Following headers must be specified:
    Accept=application/rdf+xml
    OSLC-Core-Version=2.0

1) Do an OSLC GET to one artifact.
2) Add to the returned information :
    2.1 : In the artifact body
          <oslc_rm:implementedBy rdf:ID="n0" rdf:resource="YOUR ARTIFACT URL"/>

2.1 Outside the artifact body ( but inside the RDF ):

      <rdf:Description rdf:about="#n0">
         <dc:title rdf:parseType="Literal">LINKLNAME</dc:title>
      </rdf:Description>

3) Do an OSLC PUT to the artifact with this new body. The content-type must be set to application/rdf+xml and also add the header : If-Match using the vale of the etag header returned in the OSLC GET

An example of the body will looks like :

<rdf:RDF
    .
    .
    .
<rdf:Description rdf:about="">
            .
            .
            .
    <oslc_rm:implementedBy rdf:ID="n0" rdf:resource="YOUR ARTIFACT URL"/>
            .
            .
            .
</rdf:Description>
<rdf:Description rdf:about="#n0">
    <dc:title rdf:parseType="Literal">LINKNAME</dc:title>
</rdf:Description>
</rdf:RDF>

Comments

Samanwita Majumdar commented Jan 02 '13, 3:56 a.m.

I tried the approach. But the XML is not well formed and hence the linking does not happen. I tried tweaking the XML but that does not help.
I am pasting the portion of my XML. Could you please help me understand what needs to be corrected in the same.

<oslc_rm:implementedby rdf:ID="n0" rdf:resource="https://sowb-clm.dst.ibm.com:9443/rm/resources/_RfcrASTQEeKRXOX1D-rc1A" <a="" href="rdf:ID=" n0&quot"="" target="_blank"> />

and after close of requirement tag

</rdf:description>
<rdf:description <a="" href="rdf:about=" #n0"&gt"="" target="_blank">rdf:about="#n0">;
<dc:title <a="" href="rdf:parseType=" Literal"="">Associated</dc:title&gt">rdf:parseType="Literal">Associated</dc:title&gt<>;
</rdf:description>

permanent link

Gabriel Ruelas (1.1k●1●3) | answered Jan 07 '13, 11:04 a.m.

Hi, We have published an article with sample of using OSLC in RRC : https://jazz.net/library/article/1197
Check :

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Comments

Binoy D'costa commented Apr 19 '13, 12:51 p.m.

Does this link exists? I get : "The library item that you requested cannot be found. It might have been removed, or is temporarily unavailable."

Thanks,
Binoy

Gabriel Ruelas commented Apr 19 '13, 1:51 p.m.

There is an extra space at the end of the link, Try :
https://jazz.net/library/article/1197

Binoy D'costa commented May 08 '13, 12:06 p.m.

Are any of the other link types like Extracter From, Link to etc supported? I can't seem to update them through the REST API.

Gabriel Ruelas commented May 08 '13, 1:20 p.m.

Extracted From and Link To are internal RM links, Those can not be created/modified using OSLC API. The only link types allowed to create/modify are the ones defined in the OSLC spec ( like validatedBy, implementedBy etc )

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