Can cmis atom binding generate a thumbnail, just like webservices?

alfresco-jan — Wed, 12 Nov 2014 16:36:46 GMT

I successfully used the webpreview (cmis:thumbnail rendition) with Alfresco 4.2.cTo connect my cmis client with the repository, I used this URL: http://localhost:8080/alfresco/service/cmis‍‍‍Now I upgrade to Alfresco 4.2f and I tried the "more or less" new atom-binding with this URL:http://localhost

Re: Can cmis atom binding generate a thumbnail, just like webservices?

alfresco-jan — Wed, 12 Nov 2014 16:54:42 GMT

Ah, ok.
The CMIS REST Client interferes with the CMIS REST API
And the CMIS WS Client interferes with the CMIS Web Services.

Hmmm. Therefore there is a Alfresco WebService which generates the thumbnail and this is not known to the REST API.
I read (cmis-article.pdf -> Getting Started with CMIS).

Re: Can cmis atom binding generate a thumbnail, just like webservices?

jpotts — Fri, 21 Nov 2014 05:17:36 GMT

The two different URLs you reference are completely different implementations. The newer releases of Alfresco actually use OpenCMIS under the covers rather than Alfresco's own CMIS implementation. That's why the behavior is different and why it is important to use the proper service URL when working with CMIS and Alfresco. (It looks like you are using the right service URL).

Your URL looks a little funky, though. You've got an extra question mark in there that you don't need, for one thing.

Here's something you ought to be able to re-create...

In my local 4.2.f install I dropped some JPEGs into a test folder then clicked around the UI to trigger a rendition generation. I went to my Node Browser in Alfresco Share and verified that I can see the renditions--they are stored as children of the node they are renditions of.

Then, I opened up OpenCMIS Workbench. On the renditions tab I can see the following renditions:
"doclib","cmis:thumbnail","image/png",12391,"fa398f93-a53d-4a6f-80b1-ffa0dbbf6ec6"
"imgpreview","alf:webpreview","image/jpeg",337980,"e012a915-ad26-4212-a2b1-9dae628c6944"

If I click on the "Object" tab (or the Properties tab, it doesn't matter) I can see that the CMIS object ID is:
"Object Id","cmisbjectId","id",["f1661175-99e5-481b-8097-48943664095d;1.0"]

I can look at either rendition by clicking on them within OpenCMIS Workbench, but if I want to fetch the rendition in my browser with a URL, the appropriate URL for the doclib rendition would be:
http://localhost:8080/alfresco/api/-default-/public/cmis/versions/1.0/at...

So that's how you can get the renditions via URL in Alfresco 4.2.

Jeff

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Can cmis atom binding generate a thumbnail, just like webservices?

Re: Can cmis atom binding generate a thumbnail, just like webservices?

Re: Can cmis atom binding generate a thumbnail, just like webservices?