/**
* Primary task entry point
*
* @param array $args The current supplied options.
*/
public function execute($args)
{
if (!$this->_adapter->supports_migrations()) {
throw new Ruckusing_Exception("This database does not support migrations.", Ruckusing_Exception::MIGRATION_NOT_SUPPORTED);
}
$this->_task_args = $args;
$this->_return .= "Started: " . date('Y-m-d g:ia T') . "\n\n";
$this->_return .= "[db:migrate]: \n";
try {
// Check that the schema_version table exists, and if not, automatically create it
$this->verify_environment();
$target_version = null;
$style = STYLE_REGULAR;
//did the user specify an explicit version?
if (array_key_exists('version', $this->_task_args)) {
$target_version = trim($this->_task_args['version']);
}
// did the user specify a relative offset, e.g. "-2" or "+3" ?
if ($target_version !== null) {
if (preg_match('/^([\\-\\+])(\\d+)$/', $target_version, $matches)) {
if (count($matches) == 3) {
$direction = $matches[1] == '-' ? 'down' : 'up';
$steps = intval($matches[2]);
$style = STYLE_OFFSET;
}
}
}
//determine our direction and target version
$current_version = $this->_migrator_util->get_max_version();
if ($style == STYLE_REGULAR) {
if (is_null($target_version)) {
$this->prepare_to_migrate($target_version, 'up');
} elseif ($current_version > $target_version) {
$this->prepare_to_migrate($target_version, 'down');
} else {
$this->prepare_to_migrate($target_version, 'up');
}
}
if ($style == STYLE_OFFSET) {
$this->migrate_from_offset($steps, $current_version, $direction);
}
// Completed - display accumulated output
if (!empty($output)) {
$this->_return .= "\n\n";
}
} catch (Ruckusing_Exception $ex) {
if ($ex->getCode() == Ruckusing_Exception::MISSING_SCHEMA_INFO_TABLE) {
$this->_return .= "\tSchema info table does not exist. I tried creating it but failed. Check permissions.";
} else {
throw $ex;
}
}
$this->_return .= "\n\nFinished: " . date('Y-m-d g:ia T') . "\n\n";
return $this->_return;
}
