public static AggregationContainerDescriptor <T> IntoHistogram <T>(this AggregationContainerDescriptor <T> innerAggregation,
Expression <Func <T, object> > fieldGetter, int interval) where T : class
{
AggregationContainerDescriptor <T> v = new AggregationContainerDescriptor <T>();
var fieldName = GetName(fieldGetter);
v.Histogram(fieldName, dr =>
{
HistogramAggregationDescriptor <T> dateAggDesc = new HistogramAggregationDescriptor <T>();
dateAggDesc.Field(fieldGetter).Interval(interval);
return(dateAggDesc.Aggregations(x => innerAggregation));
});
return(v);
}
