1 files changed, 28 insertions, 0 deletions
diff --git a/lib/db/adapter.php b/lib/db/adapter.php
index 3b83853289a..3b950331191 100644
--- a/lib/db/adapter.php
+++ b/lib/db/adapter.php
@@ -22,4 +22,32 @@ class Adapter {
 	public function fixupStatement($statement) {
 		return $statement;
 	}
+
+	public function insertIfNotExist($table, $input) {
+		$query = 'INSERT INTO `' .$table . '` (`'
+			. implode('`,`', array_keys($input)) . '`) SELECT '
+			. str_repeat('?,', count($input)-1).'? ' // Is there a prettier alternative?
+			. 'FROM `' . $table . '` WHERE ';
+
+		foreach($input as $key => $value) {
+			$query .= '`' . $key . '` = ? AND ';
+		}
+		$query = substr($query, 0, strlen($query) - 5);
+		$query .= ' HAVING COUNT(*) = 0';
+		$inserts = array_values($input);
+		$inserts = array_merge($inserts, $inserts);
+
+		try {
+			$statement = $this->conn->prepare($query);
+			$result = $statement->execute($inserts);
+		} catch(\Doctrine\DBAL\DBALException $e) {
+			$entry = 'DB Error: "'.$e->getMessage() . '"<br />';
+			$entry .= 'Offending command was: ' . $query.'<br />';
+			OC_Log::write('core', $entry, OC_Log::FATAL);
+			error_log('DB error: ' . $entry);
+			OC_Template::printErrorPage( $entry );
+		}
+
+		return $result;
+	}
 }