Define the target type the result should be mapped to.
Skip this step if you are anyway fine with the default conversion.
Object (the default)- Result is mapped according to the
BsonType converting eg. BsonString into
plain String, BsonInt64 to Long, etc. always picking the most concrete type with
respect to the domain types property.
Any BsonType.DOCUMENT is run through the EntityReader
to obtain the domain type.
Using Object also works for non strictly typed fields. Eg. a mixture different types like fields using
String in one Document while Long in another.
- Any Simple type like
String, Long, ...
- The result is mapped directly by the MongoDB Java driver and the
Codecs in
place. This works only for results where all documents considered for the operation use the very same type for
the field.
- Any Domain type
- Domain types can only be mapped if the if the result of the actual
distinct() operation returns
BsonType.DOCUMENT.
BsonValue- Using
BsonValue allows retrieval of the raw driver specific format, which returns eg.
BsonString.
