add store to timestamp field mapping #1533

src/Nest/Domain/Mapping/SpecialFields/TimestampFieldMapping.cs

@@ -22,6 +22,9 @@ public interface ITimestampFieldMapping : ISpecialField
 
 		[JsonProperty("ignore_missing")]
 		bool? IgnoreMissing { get; set; }
+
+		[JsonProperty("store")]
+		bool? Store { get; set; }
 	}
 
 	public class TimestampFieldMapping : ITimestampFieldMapping
@@ -33,6 +36,7 @@ public class TimestampFieldMapping : ITimestampFieldMapping
 		public string Format { get; set; }
 		public string Default { get; set; }
 		public bool? IgnoreMissing { get; set; }
+		public bool? Store { get; set; }
 	}
 
 
@@ -47,12 +51,20 @@ public class TimestampFieldMappingDescriptor<T> : ITimestampFieldMapping
 		string ITimestampFieldMapping.Format { get; set; }
 		string ITimestampFieldMapping.Default { get; set; }
 		bool? ITimestampFieldMapping.IgnoreMissing { get; set; }
+		bool? ITimestampFieldMapping.Store { get; set; }
 
 		public TimestampFieldMappingDescriptor<T> Enabled(bool enabled = true)
 		{
 			Self.Enabled = enabled;
 			return this;
 		}
+
+		public TimestampFieldMappingDescriptor<T> Store(bool store = true)
+		{
+			Self.Store = store;
+			return this;
+		}
+
 		public TimestampFieldMappingDescriptor<T> Path(string path)
 		{
 			Self.Path = path;
@@ -85,4 +97,4 @@ public TimestampFieldMappingDescriptor<T> IgnoreMissing(bool ignoreMissing = tru
 
 
 	}
-}
+}

src/Tests/Nest.Tests.Unit/Core/Map/TimestampField/TimestampFieldTests.cs

@@ -25,6 +25,7 @@ public void TimestampFieldUsingString()
 				.TimestampField(a => a
 					.Path("my_difficult_field_name")
 					.Enabled()
+                    .Store()
 				)
 			);
 			this.JsonEquals(result.ConnectionStatus.Request, MethodInfo.GetCurrentMethod());

src/Tests/Nest.Tests.Unit/Core/Map/TimestampField/TimestampFieldUsingString.json

@@ -2,7 +2,8 @@
   "elasticsearchprojects": {
     "_timestamp": {
       "enabled": true,
-      "path": "my_difficult_field_name"
+        "path": "my_difficult_field_name",
+        "store":  true
     }
   }
 }