<?php
/* -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
# ***** BEGIN LICENSE BLOCK *****
# This file is part of Plume Framework, a simple PHP Application Framework.
# Copyright (C) 2001-2010 Loic d'Anterroches and contributors.
#
# Plume Framework is free software; you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation; either version 2.1 of the License, or
# (at your option) any later version.
#
# Plume Framework is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
#
# ***** END LICENSE BLOCK ***** */

/**
 * Database statistics class.
 *
 * This class is just a wrapper which will pass the queries to the
 * underlying database class but keeping timing information. This is
 * very good to track your slow queries and improve your code.
 *
 */
class Pluf_DB_Stats
{
    /**
     * The real database connection.
     */
    protected $_rdb = null;

    public function __construct($db)
    {
        $this->_rdb = $db;
    }
    
    public function __call($name, $args)
    {
        if (!in_array($name, array('execute', 'select'))) {
            return call_user_func_array(array($this->_rdb, $name), $args);
        }
        Pluf_Log::stime('timer');
        $res = call_user_func_array(array($this->_rdb, $name), $args);
        Pluf_Log::perf(array('Pluf_DB_Stats', $this->_rdb->lastquery, Pluf_Log::etime('timer', 'total_sql')));
        Pluf_Log::inc('sql_query');
        return $res;
    }

    public function __get($name)
    {
        return $this->_rdb->$name;
    }

    public function __set($name, $value)
    {
        return $this->_rdb->$name = $value;
    }
}

function Pluf_DB_Stats_getConnection($extra=null)
{
    if (isset($GLOBALS['_PX_db']) && 
        (is_resource($GLOBALS['_PX_db']->con_id) or is_object($GLOBALS['_PX_db']->con_id))) {
        return $GLOBALS['_PX_db'];
    }
    $GLOBALS['_PX_db'] = new Pluf_DB_Stats(
                          Pluf_DB::get(Pluf::f('db_engine'), 
                                       Pluf::f('db_server'),
                                       Pluf::f('db_database'),
                                       Pluf::f('db_login'), 
                                       Pluf::f('db_password'),
                                       Pluf::f('db_table_prefix'), 
                                       Pluf::f('debug'),
                                       Pluf::f('db_version'))
                                           );
    return $GLOBALS['_PX_db'];
}