Database.php

<?php
namespace BlueSeed;

/**
 *
 * Administrate the DatabaseConnectionCollection
 * @author ivonascimento <ivo@o8o.com.br>
 * @license   http://www.opensource.org/licenses/bsd-license.php BSD
 *
 */
class Database {
    /**
     *
     * the static instance of Database for the Singleton
     * @var Database
     * @access private
     */
    private static $instance;
    /**
     *
     * The DatabaseCollection where any DatabaseConnection are stored
     * @var DatabaseCollection
     * @access private
     */
    private $databaseCollection;
    /**
     *
     * the Constructor for Database Instance
     * @access private
     * @return void
     */
    private function __construct() {
        $this->databaseCollection = new DatabaseCollection();
    }
    /**
     *
     * The Singloton request method
     * @return Database
     * @access public
     */
    public static function getInstance(){
        if (is_null(self::$instance ) )
            self::$instance = new Database();
        return self::$instance;
    }
    /**
     *
     * The method to add DatabaseConnection items in DatabaseCollection
     * @param String $name the label for request a especific connection
     * @param DatabaseConnection $dbconn
     * @access public
     * @return void
     */
    public function addDatabase($name, DatabaseConnection $dbconn){
        $this->databaseCollection[ $name ] = $dbconn;
    }
    /**
     *
     * use this method to retrieve a DatabaseConnection by your label/name
     * @param String $name
     * @throws Exception
     * @access public
     * @return DatabaseConnection
     */
    public function get($name="default"){
        if ($name)
            return $this->databaseCollection[ $name ];
        else if ( count($this->databaseCollection)==1){
            foreach ($this->databaseCollection  as $item)
                return $item;
        }
        else
            throw New \Exception("Necessario indicar um nome de Item");
    }
    /**
     *
     * This method are used to load DatabaseConnections
     * configurations from a ini file in Blue Seed sintax
     * @param String $confpath
     * @throws Exception
     * @access public
     * @return void
     */
    public function loadfromConf($confpath){
        $dbitens = parse_ini_file($confpath, true);
        foreach ($dbitens as $idx => $each){
            try{
                $dsn = "{$each['driver']}:host={$each['host']};dbname={$each['database']};port={$each['port']}";
                $this->addDatabase($idx, new DatabaseConnection( new \Pdo( trim($dsn), trim($each['user']), trim($each['password']))) );
            }catch(\Exception $Exception){
                throw new \Exception("Problemas na conexao com o DB {$idx} ({$dsn}) [ {$Exception->getMessage()} ]" );
            }
        }
    }
}

?>