How to retrieve content via REST

matthew_walters — Fri, 10 Jun 2016 20:08:12 GMT

I'd like to retrieve some content via REST but specifying a particular version, or other dataI can get the contenthttp://127.0.0.1:8080/alfresco/api/-default-/public/cmis/versions/1.1/browser/root/Sites/TEST/fragment.htmlThis returns exactly what I want (the content of 'fragment.html'), but I'd like

Re: How to retrieve content via REST

jpotts — Mon, 13 Jun 2016 20:54:00 GMT

What you're using is CMIS, version 1.1, browser binding. So you can look at the CMIS specification to learn more about what's possible.

Here's a hint, though.

When you go to:

http://127.0.0.1:8080/alfresco/api/-default-/public/cmis/versions/1.1/browser/root/Sites/TEST/fragment.html‍

You are asking for the content of an object. It's the same thing you'd get if you were to append "?cmisselector=content" to the end of the URL.

If you were instead to go to:

http://127.0.0.1:8080/alfresco/api/-default-/public/cmis/versions/1.1/browser/root/Sites/TEST/fragment.html?cmisselector=object‍

You would see the object's metadata. That metadata includes a property called cmis:versionLabel, and you've correctly identified that it is not queryable.

Another cmis selector you might be interested in is "versions". If you go to:

http://127.0.0.1:8080/alfresco/api/-default-/public/cmis/versions/1.1/browser/root/Sites/TEST/fragment.html?cmisselector=versions‍

You will get an array of objects. There's one for every version.

So one way to do what you're asking is to run the query to get the objects back, then ask each object for its versions, picking the instance of the specific version you are interested in.

It's perfectly acceptable to use the raw browser binding like this, but you might find it easier to use a library like OpenCMIS. Then you won't have to dig to figure out what the proper URLs are.

Jeff

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How to retrieve content via REST

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