spring-projects/spring-data-mongodb — pull request #90 by thomasdarimont (2013-10-29 12:23:37+00:00)
Title: DATAMONGO-788 - Projection operations do not render synthetic fields pro...

...perly.

Introduced boolean isSynthetic() attribute to FieldReference to determine if the given reference points to a synthetic field, as this controls whether we render a simple include (1) or a concrete reference ($fieldName) E.g. isSynthetic() would be true for a field reference to _id.