From a5e3ef7a721639ff36a353a297ba62f661546fa5 Mon Sep 17 00:00:00 2001
From: amercader <amercadero@gmail.com>
Date: Mon, 9 Jul 2012 15:36:42 +0100
Subject: [PATCH] [backend/es][xs] Prevent exception if ElasticSearch did not
 return a valid mapping

---
 src/backend.elasticsearch.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/src/backend.elasticsearch.js b/src/backend.elasticsearch.js
index b9333c54..16a66570 100644
--- a/src/backend.elasticsearch.js
+++ b/src/backend.elasticsearch.js
@@ -166,6 +166,12 @@ this.recline.Backend.ElasticSearch = this.recline.Backend.ElasticSearch || {};
     var es = new my.Wrapper(dataset.url, my.esOptions);
     var dfd = $.Deferred();
     es.mapping().done(function(schema) {
+
+      if (!schema){
+        dfd.reject({'message':'Elastic Search did not return a mapping'});
+        return;
+      }
+
       // only one top level key in ES = the type so we can ignore it
       var key = _.keys(schema)[0];
       var fieldData = _.map(schema[key].properties, function(dict, fieldName) {