From f46d9d6abdc6ae71a3307cf76f7064d0aa18eb65 Mon Sep 17 00:00:00 2001 From: Phil Sturgeon Date: Mon, 14 Feb 2011 21:53:48 +0000 Subject: Removed Migration code for now, will come back later. --- system/libraries/Migration.php | 336 ----------------------------------------- 1 file changed, 336 deletions(-) delete mode 100644 system/libraries/Migration.php (limited to 'system') diff --git a/system/libraries/Migration.php b/system/libraries/Migration.php deleted file mode 100644 index 73c55c346..000000000 --- a/system/libraries/Migration.php +++ /dev/null @@ -1,336 +0,0 @@ - $val) - { - $this->{'_' . $key} = $val; - } - - log_message('debug', 'Migrations class initialized'); - - // Are they trying to use migrations while it is disabled? - if ($this->_migration_enabled !== TRUE) - { - show_error('Migrations has been loaded but is disabled or set up incorrectly.'); - } - - // If not set, set it - $this->_migration_path == '' OR $this->_migration_path = APPPATH . 'migrations/'; - - // Add trailing slash if not set - $this->_migration_path = rtrim($this->_migration_path, '/').'/'; - - // They'll probably be using dbforge - $this->load->dbforge(); - - // If the migrations table is missing, make it - if ( ! $this->db->table_exists('migrations')) - { - $this->dbforge->add_field(array( - 'version' => array('type' => 'INT', 'constraint' => 3), - )); - - $this->dbforge->create_table('migrations', TRUE); - - $this->db->insert('migrations', array('version' => 0)); - } - } - - // -------------------------------------------------------------------- - - /** - * Migrate to a schema version - * - * Calls each migration step required to get to the schema version of - * choice - * - * @access public - * @param $version integer Target schema version - * @return mixed TRUE if already latest, FALSE if failed, int if upgraded - */ - function version($target_version) - { - $start = $current_version = $this->_get_version(); - $stop = $target_version; - - if ($target_version > $current_version) - { - // Moving Up - ++$start; - ++$stop; - $step = 1; - } - - else - { - // Moving Down - $step = -1; - } - - $method = $step === 1 ? 'up' : 'down'; - $migrations = array(); - - // We now prepare to actually DO the migrations - // But first let's make sure that everything is the way it should be - for ($i = $start; $i != $stop; $i += $step) - { - $f = glob(sprintf($this->_migration_path . '%03d_*.php', $i)); - - // Only one migration per step is permitted - if (count($f) > 1) - { - $this->error = sprintf($this->lang->line('multiple_migration_version'), $i); - return FALSE; - } - - // Migration step not found - if (count($f) == 0) - { - // If trying to migrate up to a version greater than the last - // existing one, migrate to the last one. - if ($step == 1) - { - break; - } - - // If trying to migrate down but we're missing a step, - // something must definitely be wrong. - $this->error = sprintf($this->lang->line('migration_not_found'), $i); - return FALSE; - } - - $file = basename($f[0]); - $name = basename($f[0], '.php'); - - // Filename validations - if (preg_match('/^\d{3}_(\w+)$/', $name, $match)) - { - $match[1] = strtolower($match[1]); - - // Cannot repeat a migration at different steps - if (in_array($match[1], $migrations)) - { - $this->error = sprintf($this->lang->line('multiple_migrations_name'), $match[1]); - return FALSE; - } - - include $f[0]; - $class = 'Migration_' . ucfirst($match[1]); - - if ( ! class_exists($class)) - { - $this->error = sprintf($this->lang->line('migration_class_doesnt_exist'), $class); - return FALSE; - } - - if ( ! is_callable(array($class, 'up')) || ! is_callable(array($class, 'down'))) - { - $this->error = sprintf($this->lang->line('wrong_migration_interface'), $class); - return FALSE; - } - - $migrations[] = $match[1]; - } - else - { - $this->error = sprintf($this->lang->line('invalid_migration_filename'), $file); - return FALSE; - } - } - - $this->log('Current schema version: ' . $current_version); - - $version = $i + ($step == 1 ? -1 : 0); - - // If there is nothing to do so quit - if ($migrations === array()) - { - return TRUE; - } - - $this->log('Moving ' . $method . ' to version ' . $version); - - // Loop through the migrations - foreach ($migrations AS $migration) - { - // Run the migration class - $class = 'Migration_' . ucfirst(strtolower($migration)); - call_user_func(array(new $class, $method)); - - $current_version += $step; - $this->_update_version($current_version); - } - - $this->log('All done. Schema is at version '.$current_version); - - return $current_version; - } - - // -------------------------------------------------------------------- - - /** - * Set's the schema to the latest migration - * - * @access public - * @return mixed true if already latest, false if failed, int if upgraded - */ - public function latest() - { - if ( ! $migrations = $this->find_migrations()) - { - throw new Exception('no_migrations_found'); - return false; - } - - $last_migration = basename(end($migrations)); - - // Calculate the last migration step from existing migration - // filenames and procceed to the standard version migration - $last_version = intval(substr($last_migration, 0, 3)); - return $this->version($last_version); - } - - // -------------------------------------------------------------------- - - /** - * Set's the schema to the migration version set in config - * - * @access public - * @return mixed true if already current, false if failed, int if upgraded - */ - public function current() - { - $version = $this->_migration_version; - return $this->version($version); - } - - // -------------------------------------------------------------------- - - /** - * Set's the schema to the latest migration - * - * @access public - * @return mixed true if already latest, false if failed, int if upgraded - */ - - protected static function find_migrations() - { - // Load all *_*.php files in the migrations path - $files = glob($this->_migration_path . '*_*.php'); - $file_count = count($files); - - for ($i = 0; $i < $file_count; $i++) - { - // Mark wrongly formatted files as false for later filtering - $name = basename($files[$i], '.php'); - if ( ! preg_match('/^\d{3}_(\w+)$/', $name)) - { - $files[$i] = FALSE; - } - } - - sort($files); - - return $files; - } - - // -------------------------------------------------------------------- - - /** - * Retrieves current schema version - * - * @access private - * @return integer Current Schema version - */ - private function _get_version() - { - $row = $this->db->get('migrations')->row(); - return $row ? $row->version : 0; - } - - // -------------------------------------------------------------------- - - /** - * Stores the current schema version - * - * @access private - * @param $migrations integer Schema version reached - * @return void Outputs a report of the migration - */ - private function _update_version($migrations) - { - return $this->db->update('migrations', array( - 'version' => $migrations - )); - } - - // -------------------------------------------------------------------- - - /** - * Stores the current schema version - * - * @access private - * @param $migrations integer Schema version reached - * @return void Outputs a report of the migration - */ - private function log($text) - { - echo $text.'
'; - } - - // -------------------------------------------------------------------- - - /** - * Enable the use of CI super-global - * - * @access public - * @param $var - * @return mixed - */ - public function __get($var) - { - return get_instance()->$var; - } -} \ No newline at end of file -- cgit v1.2.3-24-g4f1b