AnselUpgradeCategoriesToTags::up PHP Method

    public function up()
    {
        $GLOBALS['injector']->getInstance('Horde_Autoloader')->addClassPathMapper(new Horde_Autoloader_ClassPathMapper_Prefix('/^Content_/', $GLOBALS['registry']->get('fileroot', 'content') . '/lib/'));
        if (!class_exists('Content_Tagger')) {
            throw new Horde_Exception('The Content_Tagger class could not be found. Make sure the Content application is installed.');
        }
        $type_mgr = $GLOBALS['injector']->getInstance('Content_Types_Manager');
        $types = $type_mgr->ensureTypes(array('gallery', 'image'));
        $this->_type_ids = array('gallery' => (int) $types[0], 'image' => (int) $types[1]);
        $this->_tagger = $GLOBALS['injector']->getInstance('Content_Tagger');
        $this->_shares = $GLOBALS['injector']->getInstance('Horde_Core_Factory_Share')->create('ansel');
        /* Gallery tags */
        $t = $this->_connection->table('ansel_shares');
        $cols = $t->getColumns();
        if (in_array('attribute_category', array_keys($cols))) {
            $sql = 'SELECT share_id, attribute_category, share_owner FROM ansel_shares';
            $this->announce('Migrating gallery categories.');
            $rows = $this->_connection->select($sql);
            foreach ($rows as $row) {
                $this->_tagger->tag($row['share_owner'], array('object' => (string) $row['share_id'], 'type' => $this->_type_ids['gallery']), $row['attribute_category']);
            }
            $this->announce('Gallery categories successfully migrated.');
            $this->removeColumn('ansel_shares', 'attribute_category');
        } else {
            $this->announce('Gallery categories ALREADY migrated.');
        }
    }