Document hash via CMIS

[janpetzold]

I'm now using CMIS to interact with my Modeshape repository. Doing that I automatically want to hash my documents, something that Modeshapoe supports when using the JCR API:

String docHash = ((StoredBinaryValue) doc).getHexHash();

Now I'm adding a document via CMIS and I am unable to add the property cmis:contentStreamHash:

Map<String, Object> fileProperties = new HashMap<String, Object>();
fileProperties.put(PropertyIds.OBJECT_TYPE_ID, "cmis:document");
fileProperties.put(PropertyIds.NAME, fileName);
fileProperties.put(PropertyIds.CONTENT_STREAM_HASH, getSha1ForFile(fileName));

Doing that I get the Exception

java.lang.IllegalArgumentException: Property 'cmis:contentStreamHash' is not valid for this type or one of the secondary types!

However CMIS 1.0 should support this:

https://www.oasis-open.org/committees/download.php/51648/cmis-extension-content-hash.pdf

Anything I'm doing wrong? How am I going to detect duplicate files effectively without hashing them?

[hchiorean]

If I understand the document you mentioned correctly, this is an extension both to the CMIS 1.0 and CMIS 1.1 standards, it's not part of the default standard. ModeShape's CMIS support is built on top of OpenCMIS which seems to only support this from version 0.11 upwards: https://issues.apache.org/jira/browse/CMIS-770.

So if you want, you can open an Enhancement Request for this in our JIRA.

[janpetzold]

OK, I created an Enhancement Request:

[MODE-2360] Add support for CMIS document hashing - JBoss Issue Tracker