Support Evaluation Query Operators $expr.

[christophstrobl]

See: $expr

Might be a good fit for MongoExpression from #3585 - Criteria.expr(MongoExpression expression) maybe?

Origin: SO#66320786
Related: #2750

[divyajnu08]

Hi Christoph/Mark

Kindly find the pull request :
DATAMONGO-3587 - Support Evaluation Query Operators $expr
related to this issue and review the changes.
I also made a small change in the EvaluationOpertaors.Expr.toCriteriaDefinition() return type to Criteria kindly check if it's correct.

Thanks

[pjosalgado]

Any updates on this issue?

[divyajnu08]

Can i work on this issue?

[lancelot2018]

oh, buddy, when solve this problem?

[christophstrobl]

duplicate of: #2750
eventually be closed by: #4316