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|
<?php
namespace gipfl\DbMigration;
use Exception;
use gipfl\ZfDb\Adapter\Pdo\PdoAdapter as Db;
use InvalidArgumentException;
use RuntimeException;
use Zend_Db_Adapter_Pdo_Abstract as ZfDb;
class Migration
{
/**
* @var string
*/
protected $sql;
/**
* @var int
*/
protected $version;
public function __construct($version, $sql)
{
$this->version = $version;
$this->sql = $sql;
}
/**
* @param Db|ZfDb $db
* @return $this
*/
public function apply($db)
{
if (! ($db instanceof Db || $db instanceof ZfDb)) {
throw new InvalidArgumentException('$db must be an valid Zend_Db PDO adapter');
}
// TODO: this is fragile and depends on accordingly written schema files:
$sql = preg_replace('/-- .*$/m', '', $this->sql);
$queries = preg_split(
'/[\n\s\t]*;[\n\s\t]+/s',
$sql,
-1,
PREG_SPLIT_NO_EMPTY
);
if (empty($queries)) {
throw new RuntimeException(sprintf(
'Migration %d has no queries',
$this->version
));
}
try {
foreach ($queries as $query) {
if (preg_match('/^(?:OPTIMIZE|EXECUTE) /i', $query)) {
$db->query($query);
} else {
$db->exec($query);
}
}
} catch (Exception $e) {
throw new RuntimeException(sprintf(
'Migration %d failed (%s) while running %s',
$this->version,
$e->getMessage(),
$query
));
}
return $this;
}
}
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