Merge pull request #9 from abhishekbhattacharyya/master

Including an feature to send more than one doc to SOLR in one call

lib/client.js

@@ -136,6 +136,32 @@ var solrClient = function(init_opts) {
     }
   };
 
+  this.addDocs = function(solrdocs, commit, callback) {
+    if ((solrdocs != null) && solrdocs.length > 0) {
+      var _client = _.clone(this._client);
+      _client.method = 'POST';
+      if (typeof _client['core'] == 'string') {
+        _client.path += '/' + _client['core'];
+      }
+      _client.path += '/update'
+          + (commit == true ? '?commit=true' : '?commit=false');
+      _client.data = '<add>';
+      _.each(solrdocs, function(doc) {
+        if (doc instanceof helios.document) {
+          return _client.data += doc.toXML();
+        } else {
+          return callback(new SolrClientException("Bad Solr Document", doc));
+        }
+      });
+      _client.data += '</add>';
+      _client.headers = {
+        'Content-Length': Buffer.byteLength(_client.data),
+        'Content-Type': 'application/xml'
+      };
+      return executeQuery(_client, callback);
+    }
+  };
+
   this.updateDoc = function(doc, commit, callback) {
     // ---------------------------------------------------------------------------------------------------------------------
     // NOTE: Solr has a bug. If there are not fields to update or delete Solr