[Sommaire] [Imprimer]

   1  <?php
   2  /*****************************************************
   3  * This file is part of Agora, web based content management system.
   4  *
   5  * Agora is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * Agora is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details (file "COPYING").
  13  *
  14  * Copyright © Arnaud Martin, Antoine Pitrou et Philippe Rivière.
  15  * List of authors detailed in "copyright_fr.html" file.
  16  * E-mail : agora@sig.premier-ministre.gouv.fr
  17  * Web site : http://www.agora.gouv.fr
  18  *****************************************************/
  19  // Singleton
  20  // $Id$
  21  
  22  class DBManager {
  23  
  24      /**
  25      * Name.
  26      * @var     Array of PEAR::DB 
  27      * @access  private
  28      */
  29      var $_dbs;
  30  
  31      // {{{ _getDB()
  32  
  33      /**
  34       * method used to get an PEAR::DB depending on a dsn
  35       *
  36       * @return      PEAR::DB
  37       * @access public
  38       */
  39      function &getDB ($dsn, $dbOptions) {
  40  
  41          /*
  42          return $this->_dbs[$dsn];
  43          */
  44          if (is_object($this->_dbs[$dsn])) {
  45              return $this->_dbs[$dsn];
  46          }
  47          else {
  48              $this->_registerDBManager($dsn, $dbOptions);
  49          }
  50  
  51          return $this->_dbs[$dsn];
  52      }
  53  
  54      // }}}
  55  
  56      // {{{ DBManager constructor.
  57  
  58      /**
  59       * DBManager constructor.
  60       *
  61       * @access public
  62       */
  63  	function DBManager ($dsn, $dbOptions) {
  64          $this->_dbs[$dsn] = $this->getDB($dsn, $dbOptions);
  65          return $this->_dbs[$dsn];
  66      }
  67  
  68      // }}}
  69  
  70      // {{{ _registerDBManager
  71  
  72      /**
  73      * methode enregistrant un acces a une base de donnees 
  74      * 
  75      * @return  DBManager object
  76      * @access private
  77      */
  78  	function _registerDBManager ($dsn, $dbOptions) {
  79          require_once("DB.php");
  80          $this->_dbs[$dsn] = &DB::connect($dsn, $dbOptions);
  81          $obj = &$this->_dbs[$dsn];
  82  
  83          if (!DB::isError($obj)) {
  84              $obj->setFetchMode(DB_FETCHMODE_ASSOC);
  85          }
  86      }
  87  
  88      // }}}
  89  
  90      // {{{ getDBManager
  91  
  92      /**
  93       * method used to get an singleton of DBManager instance
  94       *
  95       * @return      Singleton of DBManager objec
  96       * @access public
  97       */
  98      function &getDBManager ($dsn, $dbOptions) {
  99          static $singleton;
 100  
 101          if (!isset($singleton[$dsn])) {
 102              $singleton[$dsn] = new DBManager($dsn, $dbOptions);
 103          }
 104  
 105          return $singleton[$dsn];
 106      }
 107  
 108  // }}}
 109  }
 110  ?>