Merge pull request #1094 from ftoft/histogram-extended_bounds

Support extended_bounds on Histogram

Author: Mpdreamz

src/Nest/DSL/Aggregations/HistogramAggregationDescriptor.cs

@@ -27,6 +27,9 @@ public interface IHistogramAggregator : IBucketAggregator
 
 		[JsonProperty("order")]
 		IDictionary<string, string> Order { get; set; }
+
+		[JsonProperty("extended_bounds")]
+		IDictionary<string, object> ExtendedBounds { get; set; }
 	}
 
 	public class HistogramAggregator : BucketAggregator, IHistogramAggregator
@@ -37,6 +40,7 @@ public class HistogramAggregator : BucketAggregator, IHistogramAggregator
 		public double? Interval { get; set; }
 		public int? MinimumDocumentCount { get; set; }
 		public IDictionary<string, string> Order { get; set; }
+		public IDictionary<string, object> ExtendedBounds { get; set; }
 	}
 
 	public class HistogramAggregationDescriptor<T> : BucketAggregationBaseDescriptor<HistogramAggregationDescriptor<T>, T>, IHistogramAggregator 
@@ -56,6 +60,8 @@ public class HistogramAggregationDescriptor<T> : BucketAggregationBaseDescriptor
 
 		IDictionary<string, string> IHistogramAggregator.Order { get; set; }
 
+		IDictionary<string, object> IHistogramAggregator.ExtendedBounds { get; set; }
+
 		public HistogramAggregationDescriptor<T> Field(string field)
 		{
 			Self.Field = field;
@@ -104,5 +110,11 @@ public HistogramAggregationDescriptor<T> OrderDescending(string key)
 			return this;
 		}
 
+		public HistogramAggregationDescriptor<T> ExtendedBounds(double min, double max)
+		{
+			Self.ExtendedBounds = new Dictionary<string, object> { { "min", min }, { "max", max } };
+			return this;
+		}
+
 	}
 }