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<?php
namespace PicoDb;
class Database
{
private static $instances = array();
private $logs = array();
private $pdo;
public function __construct(array $settings)
{
if (! isset($settings['driver'])) {
throw new \LogicException('You must define a database driver.');
}
switch ($settings['driver']) {
case 'sqlite':
require_once __DIR__.'/Drivers/Sqlite.php';
$this->pdo = new Sqlite($settings['filename']);
break;
default:
throw new \LogicException('This database driver is not supported.');
}
$this->pdo->setAttribute(\PDO::ATTR_ERRMODE, \PDO::ERRMODE_EXCEPTION);
}
public static function bootstrap($name, \Closure $callback)
{
self::$instances[$name] = $callback;
}
public static function get($name)
{
if (! isset(self::$instances[$name])) {
throw new \LogicException('No database instance created with that name.');
}
if (is_callable(self::$instances[$name])) {
self::$instances[$name] = call_user_func(self::$instances[$name]);
}
return self::$instances[$name];
}
public function setLogMessage($message)
{
$this->logs[] = $message;
}
public function getLogMessages()
{
return $this->logs;
}
public function getConnection()
{
return $this->pdo;
}
public function escapeIdentifier($value)
{
return $this->pdo->escapeIdentifier($value);
}
public function execute($sql, array $values = array())
{
try {
$this->setLogMessage($sql);
$this->setLogMessage(implode(', ', $values));
$rq = $this->pdo->prepare($sql);
$rq->execute($values);
return $rq;
}
catch (\PDOException $e) {
if ($this->pdo->inTransaction()) $this->pdo->rollback();
$this->setLogMessage($e->getMessage());
return false;
}
}
public function startTransaction()
{
if (! $this->pdo->inTransaction()) {
$this->pdo->beginTransaction();
}
}
public function closeTransaction()
{
if ($this->pdo->inTransaction()) {
$this->pdo->commit();
}
}
public function cancelTransaction()
{
if ($this->pdo->inTransaction()) {
$this->pdo->rollback();
}
}
public function table($table_name)
{
require_once __DIR__.'/Table.php';
return new Table($this, $table_name);
}
public function schema()
{
require_once __DIR__.'/Schema.php';
return new Schema($this);
}
}
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