Add _meta to mapping

changes.txt

@@ -1,5 +1,8 @@
 CHANGES
 
+2013-05-29
+- Add _meta to mapping. #330
+
 2013-05-23
 - add support PSR-3(https://github.com/php-fig/fig-standards/blob/master/accepted/PSR-3-logger-interface.md)
 - Elastica\Log implement LoggerInterface(extends Psr\Log\AbstractLogger)

lib/Elastica/Type/Mapping.php

@@ -71,6 +71,17 @@ public function setProperties(array $properties)
         return $this->setParam('properties', $properties);
     }
 
+    /**
+     * Sets the mapping _meta
+     * @param array $meta metadata
+     * @return \Elastica\Type\Mapping Mapping object
+     * @link http://www.elasticsearch.org/guide/reference/mapping/meta.html
+     */
+    public function setMeta(array $meta)
+    {
+        return $this->setParam('_meta', $meta);
+    }
+
     /**
      * Returns mapping type
      *

test/lib/Elastica/Test/Type/MappingTest.php

@@ -245,4 +245,19 @@ public function testDynamicTemplate()
             'Indexing status of the multiname.org not available. Dynamic mapping not fully applied!');
         $this->assertEquals('not_analyzed', $newMapping['person']['properties']['multiname']['fields']['org']['index']);
     }
+
+    public function testSetMeta()
+    {
+        $index = $this->_createIndex();
+        $type = $index->getType('test');
+        $mapping = new Mapping($type, array(
+            'firstname' => array('type' => 'string', 'store' => 'yes'),
+            'lastname' => array('type' => 'string')
+        ));
+        $mapping->setMeta(array('class' => 'test'));
+        $type->setMapping($mapping);
+
+        $mappingData = $type->getMapping();
+        $this->assertEquals('test', $mappingData['test']['_meta']['class']);
+    }
 }