<?php
-class Db implements IDb {
+class Db
+{
+
+ /* @var Db $instance */
private static $instance;
+
+ /* @var IDb $adapter */
private $adapter;
+
private $link;
+
+ /* @var PDO $pdo */
private $pdo;
- private function __construct() {
+ private function __clone() {
+ //
+ }
+
+ private function legacy_connect() {
+
+ user_error("Legacy connect requested to " . DB_TYPE, E_USER_NOTICE);
$er = error_reporting(E_ALL);
exit(100);
}
- $db_port = defined(DB_PORT) ? ';port='.DB_PORT : '';
-
- $this->pdo = new PDO(DB_TYPE . ':dbname='.DB_NAME.';host='.DB_HOST.$db_port,
- DB_USER,
- DB_PASS);
-
- $this->pdo->setAttribute( PDO::ATTR_ERRMODE, PDO::ERRMODE_WARNING );
-
- if (!$this->pdo) {
- print("Error connecting via PDO.");
- exit(101);
- }
-
- if (DB_TYPE == "pgsql") {
-
- $this->pdo->query("set client_encoding = 'UTF-8'");
- $this->pdo->query("set datestyle = 'ISO, european'");
- $this->pdo->query("set TIME ZONE 0");
- $this->pdo->query("set cpu_tuple_cost = 0.5");
-
- } else if (DB_TYPE == "mysql") {
- $this->pdo->query("SET time_zone = '+0:0'");
-
- if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
- $this->pdo->query("SET NAMES " . MYSQL_CHARSET);
- }
- }
-
$this->link = $this->adapter->connect(DB_HOST, DB_USER, DB_PASS, DB_NAME, defined('DB_PORT') ? DB_PORT : "");
if (!$this->link) {
error_reporting($er);
}
- private function __clone() {
- //
- }
+ // this really shouldn't be used unless a separate PDO connection is needed
+ // normal usage is Db::pdo()->prepare(...) etc
+ public function pdo_connect() {
- public static function get() {
- if (self::$instance == null)
- self::$instance = new self();
+ $db_port = defined('DB_PORT') && DB_PORT ? ';port=' . DB_PORT : '';
+ $db_host = defined('DB_HOST') && DB_HOST ? ';host=' . DB_HOST : '';
- return self::$instance;
- }
+ try {
+ $pdo = new PDO(DB_TYPE . ':dbname=' . DB_NAME . $db_host . $db_port,
+ DB_USER,
+ DB_PASS);
+ } catch (Exception $e) {
+ print "<pre>Exception while creating PDO object:" . $e->getMessage() . "</pre>";
+ exit(101);
+ }
- public static function pdo() {
- if (self::$instance == null)
- self::$instance = new self();
+ $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
- return self::$instance->pdo;
- }
+ if (DB_TYPE == "pgsql") {
- static function quote($str){
- return("'$str'");
- }
+ $pdo->query("set client_encoding = 'UTF-8'");
+ $pdo->query("set datestyle = 'ISO, european'");
+ $pdo->query("set TIME ZONE 0");
+ $pdo->query("set cpu_tuple_cost = 0.5");
- function reconnect() {
- $this->link = $this->adapter->connect(DB_HOST, DB_USER, DB_PASS, DB_NAME, defined('DB_PORT') ? DB_PORT : "");
- }
+ } else if (DB_TYPE == "mysql") {
+ $pdo->query("SET time_zone = '+0:0'");
- function connect($host, $user, $pass, $db, $port) {
- //return $this->adapter->connect($host, $user, $pass, $db, $port);
- return ;
- }
+ if (defined('MYSQL_CHARSET') && MYSQL_CHARSET) {
+ $pdo->query("SET NAMES " . MYSQL_CHARSET);
+ }
+ }
- function escape_string($s, $strip_tags = true) {
- return $this->adapter->escape_string($s, $strip_tags);
+ return $pdo;
}
- function query($query, $die_on_error = true) {
- return $this->adapter->query($query, $die_on_error);
- }
+ public static function instance() {
+ if (self::$instance == null)
+ self::$instance = new self();
- function fetch_assoc($result) {
- return $this->adapter->fetch_assoc($result);
+ return self::$instance;
}
- function num_rows($result) {
- return $this->adapter->num_rows($result);
- }
+ public static function get() {
+ if (self::$instance == null)
+ self::$instance = new self();
- function fetch_result($result, $row, $param) {
- return $this->adapter->fetch_result($result, $row, $param);
- }
+ if (!self::$instance->adapter) {
+ self::$instance->legacy_connect();
+ }
- function close() {
- return $this->adapter->close();
+ return self::$instance->adapter;
}
- function affected_rows($result) {
- return $this->adapter->affected_rows($result);
- }
+ public static function pdo() {
+ if (self::$instance == null)
+ self::$instance = new self();
- function last_error() {
- return $this->adapter->last_error();
- }
+ if (!self::$instance->pdo) {
+ self::$instance->pdo = self::$instance->pdo_connect();
+ }
- function last_query_error() {
- return $this->adapter->last_query_error();
+ return self::$instance->pdo;
}
-}
\ No newline at end of file
+}