From ba6b2b5956fa6dfc825ec047e07fd2fa4cf0d37d Mon Sep 17 00:00:00 2001
From: Martijn Laarman <mpdreamz@gmail.com>
Date: Fri, 10 Apr 2015 13:11:14 +0200
Subject: [PATCH] Allows you to specify
 .ConditionlessWhen(string.IsNullOrEmpty(query)) on a function score query to
 prevent functions to be applied in case of an empty query or fixed references
 inside the functions

---
 src/Nest/DSL/Query/FunctionScoreQueryDescriptor.cs | 13 +++++++++++--
 1 file changed, 11 insertions(+), 2 deletions(-)

diff --git a/src/Nest/DSL/Query/FunctionScoreQueryDescriptor.cs b/src/Nest/DSL/Query/FunctionScoreQueryDescriptor.cs
index d47bce0affd..5e2171935fb 100644
--- a/src/Nest/DSL/Query/FunctionScoreQueryDescriptor.cs
+++ b/src/Nest/DSL/Query/FunctionScoreQueryDescriptor.cs
@@ -98,17 +98,26 @@ public class FunctionScoreQueryDescriptor<T> : IFunctionScoreQuery where T : cla
 
 		string IQuery.Name { get; set; }
 
+		private bool _forcedConditionless = false;
+
 		bool IQuery.IsConditionless
 		{
 			get
 			{
-				return (Self.Query == null || Self.Query.IsConditionless)
+				return _forcedConditionless || ((Self.Query == null || Self.Query.IsConditionless)
 					&& Self.RandomScore == null 
 					&& Self.ScriptScore == null 
-					&& !Self.Functions.HasAny();
+					&& !Self.Functions.HasAny());
 			}
 		}
 
+		public FunctionScoreQueryDescriptor<T> ConditionlessWhen(bool isConditionless)
+		{
+			this._forcedConditionless = isConditionless;
+			return this;
+		}
+
+
 		public FunctionScoreQueryDescriptor<T> Name(string name)
 		{
 			Self.Name = name;