Fix NPE when media type is null

[rnowif]

Hello,

I encounter a case where an operation returns a Blob without media type. In this case, this class fails with an NPE.

[kevinleturc]

Hi,
It's a bit weird that you don't have Content-Type/mimeType value, blobs should always have a mime type. Maybe you're facing a server issue ?
On the other hand, it's still interesting to handle such case in client. I would like to replace null cases by usage of a DEFAULT mime type, for instance application/octet-stream. It allows to always have amimeType in nuxeo-java-client's blobs.
Will it be ok for your case ?

[rnowif]

Hi,
Thank you for the quick reply.

Indeed, I agree that it may be a server issue but that it is relevant to handle it on the client side.
Your proposition to have a default media type seems ok to me. I propose to return this default MediaType here : https://github.com/nuxeo/nuxeo-java-client/blob/master/nuxeo-java-client/src/main/java/org/nuxeo/client/MediaType.java#L138

Is it good for you ?

[kevinleturc]

Good location 👍
I addressed it in #57 during a refactoring of whole blob API. Now blob can't have a null media type unless you initialised it explicitly with null.

Thanks

[rnowif]

Thank you very much 👍