1 files changed, 72 insertions, 0 deletions
diff --git a/lib/db/adapter.php b/lib/db/adapter.php
new file mode 100644
index 00000000000..6b31f37dd98
--- /dev/null
+++ b/lib/db/adapter.php
@@ -0,0 +1,72 @@
+<?php
+/**
+ * Copyright (c) 2013 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\DB;
+
+/**
+ * This handles the way we use to write queries, into something that can be
+ * handled by the database abstraction layer.
+ */
+class Adapter {
+
+	/**
+	 * @var \OC\DB\Connection $conn
+	 */
+	protected $conn;
+
+	public function __construct($conn) {
+		$this->conn = $conn;
+	}
+
+	/**
+	 * @param string $table name
+	 * @return int id of last insert statement
+	 */
+	public function lastInsertId($table) {
+		return $this->conn->realLastInsertId($table);
+	}
+
+	/**
+	 * @param string $statement that needs to be changed so the db can handle it
+	 * @return string changed statement
+	 */
+	public function fixupStatement($statement) {
+		return $statement;
+	}
+
+	/**
+	 * @brief insert the @input values when they do not exist yet
+	 * @param string $table name
+	 * @param array $input key->value pairs
+	 * @return int count of inserted rows
+	 */
+	public function insertIfNotExist($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 {
+			return $this->conn->executeUpdate($query, $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 );
+		}
+	}
+}