173 lines
4.5 KiB
PHP
173 lines
4.5 KiB
PHP
<?php
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/**
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* 整體資料庫操作
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*
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* 此檔案針對整體資料庫的功能，像是建立此資料庫、建立表格、清空...等等
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*
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*/
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namespace UElearning\Database;
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require_once UELEARNING_LIB_ROOT.'Database/MySQLDB.php';
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require_once UELEARNING_LIB_ROOT.'Database/Exceptions.php';
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use UElearning\Database\Exception;
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/**
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* 資料庫操作抽象類別
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*
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* 請根據一個資料表創建一個類別，並繼承此類別。
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* 所有對於資料表的操作（包含查詢、新增、修改、刪除），一律使用新創已繼承的類別物件。
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*
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* 基本的操作方式例如:
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*
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* use UElearning\Database;
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* $db = new Database\[資料表類別](array(
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* 'type' => 'mysql',
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* 'host' => 'localhost',
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* 'port' => '3306',
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* 'user' => 'user',
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* 'password' => '123456',
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* 'dbname' => 'chu-elearning',
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* 'prefix' => 'chu_'
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* ));
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*
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* 實際範例可參考 `DBAdmin` 類別的說明文件
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*
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* @author Yuan Chiu <chyuaner@gmail.com>
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* @version 3.0
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* @package UElearning
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* @subpackage Database
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*/
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abstract class Database {
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/**
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* 資料庫伺服器類型
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*
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* 目前支援的:
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* * mysql
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*
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* @type string
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*/
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private $db_type;
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/**
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* 資料庫伺服器位址
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* @type string
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*/
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private $db_host;
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/**
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* 資料庫伺服器連結埠
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* @type string
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*/
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private $db_port;
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/**
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* 資料庫帳號
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* @type string
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*/
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private $db_user;
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/**
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* 資料庫密碼
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* @type string
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*/
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private $db_passwd;
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/**
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* 資料庫名稱
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* @type string
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*/
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private $db_name;
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/**
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* 資料表前綴字元
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* @type string
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*/
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private $db_prefix;
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// ------------------------------------------------------------------------
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/**
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* 資料庫連結物件
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* @type UElearning\Database\PDODB
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*/
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private $connDB;
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// ========================================================================
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/**
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* 連接資料庫
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*
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* @param array $conf (optional) 資料庫相關參數，格式為:
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* array( 'type' => 'mysql',
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* 'host' => 'localhost',
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* 'port' => '3306',
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* 'user' => 'user',
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* 'password' => '123456',
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* 'dbname' => 'chu-elearning',
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* 'prefix' => 'chu_' )
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* 若不填寫將會直接使用設定在`config.php`的常數
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*
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* @throws UElearning\Database\Exception\DatabaseNoSupportException
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* @author Yuan Chiu <chyuaner@gmail.com>
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* @since 3.0.0
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*/
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public function __construct($conf = null) {
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// 將資料庫設定資訊帶入
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if(isset($conf)) {
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$this->db_type = $conf['type'];
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$this->db_host = $conf['host'];
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$this->db_port = $conf['port'];
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$this->db_user = $conf['user'];
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$this->db_passwd = $conf['password'];
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$this->db_name = $conf['dbname'];
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$this->db_prefix = $conf['prefix'];
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}
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else {
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$this->db_type = DB_TYPE;
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$this->db_host = DB_HOST;
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$this->db_port = DB_PORT;
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$this->db_user = DB_USER;
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$this->db_passwd = DB_PASS;
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$this->db_name = DB_NAME;
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$this->db_prefix = DB_PREFIX;
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}
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// 檢查是否有支援所設定的DBMS
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if($this->db_type == 'mysql') {
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$this->connDB = new MySQLDB($this->db_name
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, $this->db_host
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, $this->db_port
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, $this->db_user
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, $this->db_passwd);
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}
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else {
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throw new Exception\DatabaseNoSupportException($this->db_type);
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}
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}
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/**
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* 轉為完整的資料表名稱（包含前綴字元）
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*
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* @param string $tableName 資料表名稱
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* @return string 完整的資料表名稱
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*
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* @author Yuan Chiu <chyuaner@gmail.com>
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* @since 3.0.0
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*/
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public function table($tableName) {
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return $this->db_prefix.$tableName;
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}
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/**
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* 測試資料庫有無連接成功
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*
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* @since 3.0.0
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*/
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public function connectTest() {
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// TODO: Fill code in
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}
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} |