Moved ResultSet creation to a static factory method

changes.txt

@@ -1,5 +1,8 @@
 CHANGES
 
+2014-10-05
+ - ResultSet creation moved to static ResultSet::create() method #690
+
 2014-10-04
 - Release v1.3.4.0
 - Update to elasticsearch 1.3.4 #691

lib/Elastica/ResultSet.php

@@ -15,6 +15,13 @@
  */
 class ResultSet implements \Iterator, \Countable, \ArrayAccess
 {
+    /**
+     * Class for the static create method to use.
+     *
+     * @var string
+     */
+    protected static $_class = 'Elastica\\ResultSet';
+
     /**
      * Results
      *
@@ -76,6 +83,31 @@ public function __construct(Response $response, Query $query)
         $this->_query = $query;
     }
 
+    /**
+     * Creates a new ResultSet object. Can be configured to return a different
+     * implementation of the ResultSet class.
+     *
+     * @param Response $response
+     * @param Query $query
+     * @return ResultSet
+     */
+    public static function create(Response $response, Query $query)
+    {
+        $class = static::$_class;
+
+        return new $class($response, $query);
+    }
+
+    /**
+     * Sets the class to be used for the static create method.
+     *
+     * @param string $class
+     */
+    public static function setClass($class)
+    {
+        static::$_class = $class;
+    }
+
     /**
      * Loads all data into the results object (initialisation)
      *

lib/Elastica/Search.php

@@ -436,7 +436,7 @@ public function search($query = '', $options = null)
             $params
         );
 
-        return new ResultSet($response, $query);
+        return ResultSet::create($response, $query);
     }
 
     /**
@@ -458,7 +458,7 @@ public function count($query = '', $fullResult = false)
             $query->toArray(),
             array(self::OPTION_SEARCH_TYPE => self::OPTION_SEARCH_TYPE_COUNT)
         );
-        $resultSet = new ResultSet($response, $query);
+        $resultSet = ResultSet::create($response, $query);
 
         return $fullResult ? $resultSet : $resultSet->getTotalHits();
     }

lib/Elastica/Type.php

@@ -492,7 +492,7 @@ public function moreLikeThis(Document $doc, $params = array(), $query = array())
 
         $response = $this->request($path, Request::GET, $query->toArray(), $params);
 
-        return new ResultSet($response, $query);
+        return ResultSet::create($response, $query);
     }
 
     /**