alternative for db.eval() in MongoDB 3.0

[Devender Yadav]

db.eval() method is deprecated in 3.0 version. what is the alternative for this?

-Devender

[Stephen Steneker]

On Wednesday, 27 May 2015 02:09:19 UTC-7, Devender Yadav wrote:

db.eval() method is deprecated in 3.0 version. what is the alternative for this?

Hi Devender,

Deprecation means that the server-side $eval command is still available in MongoDB 3.0 but is planned for removal in a future release. There are a number of issues with the $eval command (see the summary from Dan Passette on https://jira.mongodb.org/browse/SERVER-17453).

The alternative is to implement the equivalent queries/operations using the normal MongoDB query language and client driver API.

Note: this is specific to the $eval command. Server-side JavaScript for Map/Reduce and $where is still supported.

Regards,

Stephen

[Liam Cameron]

Hi Stephen,

Will the deprecation of $eval lead to the deprecation of the pymongo.database.SystemJS class as well? 

Please have a look at my post regarding this, here: https://groups.google.com/forum/#!topic/mongodb-user/BSi_v-J05P0

Thanks in advance.

Liam