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generating thumbnails in Alfresco

RobertDudas

I am developing CMIS based application code to get thumbnails from the Alfresco repository. But thumbnails are not available immediately after insertion. How can I set CMIS when creating a file, pls? Can I set up on Map<String, Object>, ContentStream, or another way to start doclib creation?

I want to do something similar to JavaScript.
document.createThumbnail("scImageThumbnail", true);

Or is it just about setting the Alfresco?

Thanks.

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Alfresco Content Services

Comments

angelborroy

The action to create a rendition (the thumbnail) can't be fired from CMIS API (afaik). So you need to wait for Alfresco to create that and once this happens, you can get the rendition by using Rendition API.

Sample code for this operation is available in @jpotts reply to this question: https://stackoverflow.com/questions/38655368/how-to-get-rendition-copy-of-word-document-from-alfresco-repository-using-cmis

RobertDudas

I use this GET request for thumbnail, works if doc lib is created. But doc lib is only generated if I open the Alfresco UI with this file.

Is it possible to append the OperationContext to the GET request parameter ?c=force via CMIS?

In ALF7 I have these parameters in alfresco-global. properties:

    transform.service.enabled=true
    local.transform.service.enabled=true
    messaging.subsystem.autoStart=true
    alfresco.restApi.basicAuthScheme=true

Is there anything else to add?

Is there a lazy evaluation of thumbnails in alfresco? If so, how do I turn it off? I need to ensure that ALF creates a thumbnail immediately after inserting the file via CMIS.

Thanks

angelborroy

In order to create a new rendition (after the inserting the file using CMIS) you need to use the Alfresco REST API:

https://api-explorer.alfresco.com/api-explorer/#/renditions/createRendition

There is no option available from CMIS Client.

RobertDudas

In ALF6, thumbnails were generated from documents(pdf, txt, pptx, csv, etc) immediately after insertion. Only thumbnails from images were not generated automatically. What's the rendition in ALF6 and ALF7 different?