Derive fields for aggregation $project stage from a given type. [DATAMONGO-2200]

[spring-projects-issues]

Christoph Strobl opened DATAMONGO-2200 and commented

By default the $project stage of an aggregation includes nothing but the _id field of the source document. So one has to include each and every field by hand.

project("firstname", "lastname", ...

It would be a nice addition if we could read the fields from a given type

project(Person.class)

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Referenced from: pull request #748