Aggegation: DateHistogram - interval should support enum value

[jayhilden]

when doing an aggregation on DateHistogram that "interval" option only takes a string as an arguement, it would be very nice if it supported the DateInterval enum value the same way the facets do.

This is a working sample:

var result = ElasticClient
    .Search<AuthForReporting>(s => s
        .Size(0)
        .Aggregations(a => a.DateHistogram("AuthsByDate", t => t
            .Field(f => f.AuthResult.AuthEventDate)
            .Interval(DateInterval.Day.ToString().ToLower())
)));

It would be great if we could specify:

.Interval(DateInterval.Day)

[jayhilden]

copying @jfren484

[gmarz]

@jayhilden Just added support for this in the above commit. Thanks for pointing this out!

[jayhilden]

👍 Thanks @gmarz