From 2e26e2e126a9a48b6ce293ebb74dbf86476ec326 Mon Sep 17 00:00:00 2001
From: Raul Ochoa <rochoaf@gmail.com>
Date: Fri, 13 May 2016 12:57:43 +0200
Subject: [PATCH] Use split strategy for head/tails turbo-carto quantification

---
 NEWS.md                                        | 3 +++
 lib/cartodb/utils/style/postgres-datasource.js | 6 +++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/NEWS.md b/NEWS.md
index 0f65992f..fc1e6334 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -4,6 +4,9 @@
 
 Released 2016-mm-dd
 
+Enhancements:
+ - Use split strategy for head/tails turbo-carto quantification
+
 Announcements:
  - Upgrades turbo-carto to [0.9.0](https://github.com/CartoDB/turbo-carto/releases/tag/0.9.0)
 
diff --git a/lib/cartodb/utils/style/postgres-datasource.js b/lib/cartodb/utils/style/postgres-datasource.js
index fd6e02c1..5db35607 100644
--- a/lib/cartodb/utils/style/postgres-datasource.js
+++ b/lib/cartodb/utils/style/postgres-datasource.js
@@ -23,6 +23,10 @@ var methodTemplates = Object.keys(methods).reduce(function(methodTemplates, meth
     return methodTemplates;
 }, {});
 
+var method2strategy = {
+    headtails: 'split'
+};
+
 function PostgresDatasource (pgQueryRunner, username, query) {
     this.pgQueryRunner = pgQueryRunner;
     this.username = username;
@@ -48,7 +52,7 @@ PostgresDatasource.prototype.getRamp = function (column, buckets, method, callba
             return a - b;
         });
 
-        return callback(null, ramp);
+        return callback(null, { ramp: ramp, strategy: method2strategy[methodName] });
     });
 };