classes/db.php

   1 <?php
   2 class Db implements IDb {
   3         private static $instance;
   4         private $adapter;
   5         private $link;
   6
   7         private function __construct() {
   8                 switch (DB_TYPE) {
   9                 case "mysql":
  10                         $this->adapter = new Db_Mysql();
  11                         break;
  12                 case "pgsql":
  13                         $this->adapter = new Db_Pgsql();
  14                         break;
  15                 default:
  16                         user_error("Unknown DB_TYPE: " . DB_TYPE);
  17                 }
  18
  19                 $this->link = $this->adapter->connect(DB_HOST, DB_USER, DB_PASS, DB_NAME, DB_PORT);
  20
  21         }
  22
  23         private function __clone() {
  24                 //
  25         }
  26
  27         public static function get() {
  28                 if (self::$instance == null)
  29                         self::$instance = new self();
  30
  31                 return self::$instance;
  32         }
  33
  34         static function quote($str){
  35                 return("'$str'");
  36         }
  37
  38         function init() {
  39                 //
  40         }
  41
  42         function connect($host, $user, $pass, $db, $port) {
  43                 //return $this->adapter->connect($host, $user, $pass, $db, $port);
  44                 return $this->link;
  45         }
  46
  47         function escape_string($s, $strip_tags = true) {
  48                 return $this->adapter->escape_string($s, $strip_tags);
  49         }
  50
  51         function query($query, $die_on_error = true) {
  52                 return $this->adapter->query($query, $die_on_error);
  53         }
  54
  55         function fetch_assoc($result) {
  56                 return $this->adapter->fetch_assoc($result);
  57         }
  58
  59         function num_rows($result) {
  60                 return $this->adapter->num_rows($result);
  61         }
  62
  63         function fetch_result($result, $row, $param) {
  64                 return $this->adapter->fetch_result($result, $row, $param);
  65         }
  66
  67         function close() {
  68                 return $this->adapter->close();
  69         }
  70
  71         function affected_rows($result) {
  72                 return $this->adapter->affected_rows($result);
  73         }
  74
  75         function last_error() {
  76                 return $this->adapter->last_error();
  77         }
  78
  79 }
  80 ?>