init commit

plugins/xframework/common/Database.php

@@ -0,0 +1,47 @@
+<?php
+namespace XFramework;
+
+/**
+ * Roundcube Plus Framework plugin.
+ *
+ * This class retrieves request data sent by Angular ajax requests. Angular json-encodes the parameters and php doesn't
+ * decode them properly into $_POST, so we get the data and decode it manually.
+ *
+ * Copyright 2016, Tecorama LLC.
+ *
+ * @license Commercial. See the LICENSE file for details.
+ */
+
+require_once "Singleton.php";
+require_once("DatabaseMysql.php");
+require_once("DatabaseSqlite.php");
+require_once("DatabasePostgres.php");
+
+class Database
+{
+    use Singleton;
+    static private $provider;
+
+    /**
+     * @throws \Exception
+     */
+    public static function instance($provider = null)
+    {
+        if (static::$instance && (!$provider || $provider == static::$provider)) {
+            return static::$instance;
+        }
+
+        static::$provider = $provider ?? xrc()->get_dbh()->db_provider;
+
+        switch (static::$provider) {
+            case "mysql":
+                return static::$instance = new DatabaseMysql();
+            case "sqlite":
+                return static::$instance = new DatabaseSqlite();
+            case "postgres":
+                return static::$instance = new DatabasePostgres();
+            default:
+                throw new \Exception("Error: This plugin does not support database provider $provider.");
+        }
+    }
+}