MongoDB base64-encoded ObjectId

[alexmnyc]

Hi guys,

I'm looking at some best practices for schema design for my application and need to be able to implement _id field as Base64-encoded ObjectID

How do you achieve Base64 encoding of ObjectID in Lift? 

Thank you.

[alexmnyc]

FYI, I'm basing this on the schema provided by Mongo DB use cases document https://jira.mongodb.org/secure/attachment/16610/MongoDB-use-cases.pdf on page 17 collection social.user as example.

[Tim Nelson]

Hi,

This should do the trick:

import net.liftweb.util.Helpers.base64Encode

val newId = base64Encode(ObjectId.get.toByteArray)

Tim

[alexmnyc]

Thanks, Tim. It's much appreciated. 

As a matter of fact, I'm trying to make this modification to your greatly contributed mongoauth project for User model. What would be a recommended place to override such logic? How would you do it? Thank you in advance.

[Alex Mikhailau]

Just to add,

Basically, referencing MongoDB documentation on "Optimizing ObjectIDs", the suggestion is to "store Binary GUIDs as BinData, rather than as hex encoded strings. BSON includes a binary data datatype for storing byte arrays. Using this will make the id values, and their respective keys in the _id index, twice as small."

I was not able to see a BinData data type in the record.field package. How would you switch out mongoauth's User's id to be of BinData data type instead and use base64 encoded values?

Thank you.

[Tim Nelson]

Hi,

I haven't read the "Optimizing ObjectIDs" docs yet. Give me some time to look into it and I'll get back to you.

Tim

[alexmnyc]

Thanks, Tim.  

[alexmnyc]

Hi Tim, were you able to review the documentation? Here's the direct link in case you were not able to find it http://www.mongodb.org/display/DOCS/Optimizing+Object+IDs

PS I'm also going to ask a question in the main thread about what the best approach using Record framework would be to follow MongoDB best practices.

[alexmnyc]

I added the following thread https://groups.google.com/forum/?fromgroups=#!searchin/liftweb/mongodb/liftweb/aHn5r1jZYSc/jIwCcbvPbfAJ