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DbVersion.class.php (1501B)

      1 <?php
      2 
      3 
      4 namespace database;
      5 
      6 
      7 abstract class DbVersion
      8 {
      9 	const TYPE_MYSQL    = 1;
     10 	const TYPE_POSTGRES = 2;
     11 	const TYPE_SQLITE   = 3;
     12 	const TYPE_ORACLE   = 4; // Attention: ORACLE is NOT really supported.
     13 
     14 	private $db;
     15 	private $tablePrefix;
     16 	private $tableSuffix;
     17 
     18 	/**
     19 	 * Datenbank-RDBMS-Typ
     20 	 */
     21 	private $dbmsType;
     22 
     23 	/**
     24 	 * DbVersion constructor.
     25 	 * @param Database $db
     26 	 */
     27 	public function __construct(Database $db)
     28 	{
     29 		$this->db = $db;
     30 
     31 		switch ($db->conf['type']) {
     32 			case 'pdo':
     33 				if   ( $db->conf['dsn'] ) {
     34 					$dsnParts = explode(':', $db->conf['dsn']);
     35 					$driver = $dsnParts[0];
     36 				}else {
     37 					$driver = $db->conf['driver'];
     38 				}
     39 				switch ($driver) {
     40 					case 'mysql':
     41 						$this->dbmsType = DbVersion::TYPE_MYSQL;
     42 						break;
     43 					case 'pgsql':
     44 						$this->dbmsType = DbVersion::TYPE_POSTGRES;
     45 						break;
     46 					case 'sqlite':
     47 						$this->dbmsType = DbVersion::TYPE_SQLITE;
     48 						break;
     49 					default:
     50 						throw new \LogicException('Unknown PDO driver: ' . $driver);
     51 				}
     52 				break;
     53 			default:
     54 				// for now we are only supporting PDO.
     55 				throw new \LogicException('Unknown DBMS type: ' . $db->conf['type']);
     56 		}
     57 
     58 		$this->tablePrefix = $db->conf['prefix'];
     59 		$this->tableSuffix = $db->conf['suffix'];
     60 	}
     61 
     62 	// Muss überschrieben werden!
     63 	abstract function update();
     64 
     65 
     66 	public function table( $tableName ) {
     67 		return new Table( $this->getDb(),$this->dbmsType, $tableName );
     68 	}
     69 
     70 
     71 	/**
     72 	 * @return Database
     73 	 */
     74 	function getDb()
     75 	{
     76 		return $this->db;
     77 	}
     78 
     79 }