Using bitwise operation for request in mongodb

Question

I need to make a query like this in MongoDB:

db.collection.find( { $where : "(this.type & some_num) ^ some_num == 0"} ) 

Some_num is a variable and can be any integer.

I read the document here that says the Javascript query is slowing down and also cannot use the index and requires a table scan.

What is the alternative to the above query?

Answer 1

, Mongo, - , , . .

Answer 2

$, .

- $bitand, . . https://jira.mongodb.org/browse/SERVER-3518.

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Answer 3

, . Construct this.type JS, , . - . , , xoring .

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Anyway, you can use the bitwise xor operator in mognodb 2.6, or you can try the experimental version 2.5 now.