Does Leshan support ObjLink?

Question

I am trying to create my composite LWM2M object by using objlink type.

For Leshan, the only source on how to write the spec file in JSON seems to be the official oma-objects-spec.json, which does not contain examples of objlinks.

Can anyone provide an example on how to create an objlink object? If it is not possible in Leshan, have anyone tried other implementations?

score 1 · Accepted Answer · answered Sep 16 '16 at 05:27

1

Hope it's not too late.

As of now there is no support of OBJLNK in Leshan API. I was also needed OBJLNK support in Leshan so i have modified and created a pull request for supporting OBJLNK. If you want to have objlnk support can use my branch which is forked from Leshan. https://github.com/DevendraKurre/leshan

answered Sep 16 '16 at 05:27

Devendra kumar kurre

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1
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Thank you for this patch! I have just tried it and it worked fine. But since Leshan has implementation now, I would prefer to use that. – Chunhao Wu Nov 11 '16 at 02:44
1

welcome.np, that is merged from my pull request only. – Devendra kumar kurre Nov 23 '16 at 08:31
wow, that's really a big help! actually, i also sent a patch to Leshan to fix a bug of the patch. – Chunhao Wu Dec 06 '16 at 06:03

score 0 · Answer 2 · edited Nov 11 '16 at 03:05

Leshan has added support to this feature. I have tested it with version 0.1.11-M14.

Reading can be done as usual, and writing is done as follows.

WriteRequest writeReq = new WriteRequest(
                          WriteRequest.Mode.UPDATE,
                          9, 0,
                          LwM2mSingleResource.newObjectLinkResource(
                            13, 
                            new ObjectLink(5566, 7788)
                          )
                        );

Does Leshan support ObjLink?

2 Answers2