custom DBConnector system

git-svn-id: svn+ssh://code.netmonsters.ru/svn/majestic/trunk@75 4cb57b5f-5bbd-dd11-951b-001d605cbbc5

classes/DBConnector.class.php

@@ -13,8 +13,7 @@
  */
 class DBConnector
 {
-    private $handlers = array();
-    static private $instance = null;
+    static private $handlers = array();
     static public $queries   = array();
 
     /**
@@ -25,43 +24,88 @@ class DBConnector
     private function __clone(){}
 
     /**
-     * Единственный способ инициализации. Singletone как-никак.
-     * @return DBConnector
-     */
-    static public function getInstance()
-    {
-        if (self::$instance == null) {
-            self::$instance = new DBConnector();
-        }
-        return self::$instance;
-    }
-
-    /**
      * Получение соединения.
      * Если соединение с такими параметрами уже есть - новое не создается.
      *
      * @param array $db_settings - массив настроек
      * @return resource - идентификатор соединения
      */
-    public function getConnect($db_settings)
+    static public function getConnect($db_settings)
     {
-        $handler_name = $this->getConnectionName($db_settings);
+        $handler_name = self::getConnectionName($db_settings);
 
-        if (isset($this->handlers[$handler_name])) {
-            return $this->handlers[$handler_name];
+        if (isset(self::$handlers[$handler_name])) {
+            return self::$handlers[$handler_name];
         }
 
         if (!$handler = mysqli_connect($db_settings['host'], $db_settings['user'], $db_settings['password'], $db_settings['database'])) {
             throw new MJException('Can\'t connect to DB '.mysqli_connect_error(), 2);
         }
 
-        mysqli_query($handler, "SET NAMES 'utf8'"); //cheat!!!
-        return $this->handlers[$handler_name] = $handler;
+        self::query($handler, "SET NAMES 'utf8'"); //cheat!!!
+        return self::$handlers[$handler_name] = $handler;
     }
 
-    protected function getConnectionName($db_settings)
+    static protected function getConnectionName($db_settings)
     {
         return $db_settings['host'] . '-' . $db_settings['database'];
     }
+
+/////////
+
+    static public function query($handler, $sql)
+    {
+        return mysqli_query($handler, $sql);
+    }
+
+    static public function escape($handler, $str)
+    {
+        return mysqli_real_escape_string($handler, $str);
+    }
+
+    static public function error($handler)
+    {
+        return mysqli_error($handler);
+    }
+
+    static public function free($result)
+    {
+        return mysqli_free_result($result);
+    }
+
+    static public function fetchObject($result, $class_name = false)
+    {
+        return $class_name ? mysqli_fetch_object($result, $class_name) : mysqli_fetch_object($result);
+    }
+
+    static public function numRows($result)
+    {
+        return mysqli_num_rows($result);
+    }
+
+    static public function affectedRows($handler)
+    {
+        return mysqli_affected_rows($handler);
+    }
+
+    static public function getId($handler)
+    {
+        return mysqli_insert_id($handler);
+    }
+
+    static public function autocommit($handler, $switch)
+    {
+        return mysqli_autocommit($handler, (bool) $switch);
+    }
+
+    static public function commit($handler)
+    {
+        return mysqli_commit($handler);
+    }
+
+    static public function rollback($handler)
+    {
+        return mysqli_rollback($handler);
+    }
 }
 ?>

classes/Model.class.php

@@ -19,7 +19,7 @@ abstract class Model
 
     function __construct()
     {
-        $this->handler = DBConnector::getInstance()->getConnect(Env::getParam('db_settings'));
+        $this->handler = DBConnector::getConnect(Env::getParam('db_settings'));
     }
 
     /**
@@ -33,9 +33,9 @@ abstract class Model
         if (DEBUG_ENABLE) {
             $time = microtime(true);
         }
-        $res = mysqli_query($this->handler, $sql);
-        if (mysqli_errno($this->handler)) {
-            throw new MJException("<b>Query Error:</b>\n".$sql."\n<b>Error:</b>\n".mysqli_error($this->handler), 1);
+        $res = DBConnector::query($this->handler, $sql);
+        if ($error = DBConnector::error($this->handler)) {
+            throw new MJException("<b>Query Error:</b>\n".$sql."\n<b>Error:</b>\n".$error, 1);
         }
 
         if (DEBUG_ENABLE) {
@@ -77,11 +77,11 @@ abstract class Model
     {
         if(is_array($data)){
             foreach($data as $id => $val){
-                $data[$id] = mysqli_real_escape_string($this->handler, $val);
+                $data[$id] = DBConnector::escape($this->handler, $val);
             }
             return $data;
         }
-        return mysqli_real_escape_string($this->handler, $data);
+        return DBConnector::escape($this->handler, $data);
     }
 
 //////////////////////////
@@ -123,17 +123,17 @@ abstract class Model
 
     function setAutocommit($set)
     {
-        return mysqli_autocommit($this->handler, (bool) $set);
+        return DBConnector::autocommit($this->handler, (bool) $set);
     }
 
     function commit()
     {
-        return mysqli_commit($this->handler);
+        return DBConnector::commit($this->handler);
     }
 
     function rollback()
     {
-        return mysqli_rollback($this->handler);
+        return DBConnector::rollback($this->handler);
     }
 }
 
@@ -156,7 +156,7 @@ class ModelSelectResult extends ModelResult
 
     function fetch($class_name = false)
     {
-        return $class_name ? mysqli_fetch_object($this->result, $class_name) : mysqli_fetch_object($this->result);
+        return DBConnector::fetchObject($this->result, $class_name);
     }
 
     function fetchField($field, $default = false)
@@ -169,11 +169,11 @@ class ModelSelectResult extends ModelResult
     {
         $array = array();
         if ($key) {
-            while ($row = mysqli_fetch_object($this->result)) {
+            while ($row = DBConnector::fetchObject($this->result)) {
                 $array[$row->$key] = $row;
             }
         } else {
-            while ($row = mysqli_fetch_object($this->result)) {
+            while ($row = DBConnector::fetchObject($this->result)) {
                 $array[] = $row;
             }
         }
@@ -182,12 +182,12 @@ class ModelSelectResult extends ModelResult
 
     function count()
     {
-        return mysqli_num_rows($this->result);
+        return DBConnector::numRows($this->result);
     }
 
     function free()
     {
-        mysqli_free_result($this->result);
+        DBConnector::free($this->result);
     }
 
     function __destruct() {
@@ -201,7 +201,7 @@ class ModelChangeResult extends ModelResult
 
     function __construct($resource)
     {
-        $this->affected = mysqli_affected_rows($resource);
+        $this->affected = DBConnector::affectedRows($resource);
     }
 
     function count()
@@ -217,7 +217,7 @@ class ModelInsertResult extends ModelChangeResult
     function __construct($resource)
     {
         parent::__construct($resource);
-        $this->id = mysqli_insert_id($resource);
+        $this->id = DBConnector::getId($resource);
     }
 
     function getId()

init/sys.inc.php

@@ -77,6 +77,9 @@ function __autoload($name)
     $class_name = substr($name, 0, -strlen($type));
 
     switch ($type) {
+        case 'DBConnector':
+            require(CORE_PATH.'/'.(defined('CUSTOM_DBCONNECTOR') ? CUSTOM_DBCONNECTOR.'_' : '').'DBConnector.class.php');
+            break;
         case $name:
         case EXCEPTION_POSTFIX:
             require(CORE_PATH.'/'.$name.'.class.php');