[mongodb-dev] BinData

[Joson Mandaro]

Hi all,
    I found Gridfs can encode files in two spec:

BinData(0,"Q1dTCf8nAAB4nM0...")
BinData(2,"qBYAAENXUwn9Jw...")

what's '0' and '2' meaning? And there's any information about BinData() ?
Best Regards,

Joson

[Kyle Banker]

The 0 and 2 are subtypes, used to give sense of what kind of binary
data we're encoding. For instance, there's a subtype for md5. They're
all explained in the bsonspec: http://bsonspec.org/#/specification

The drivers used to encode GridFS binary as subtype 2, but that's been
deprecated in favor of subtype 0. Once 1.8 is released, most of the
drivers should be using type 0.

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