--- /dev/null
+<?php
+/**
+ * A factory class for file-based stacks
+ *
+ * @author Roland Haeder <webmaster@ship-simu.org>
+ * @version 0.0.0
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2012 Hub Developer Team
+ * @license GNU GPL 3.0 or any newer version
+ * @link http://www.ship-simu.org
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+class FileStackFactory extends ObjectFactory {
+ /**
+ * Protected constructor
+ *
+ * @return void
+ */
+ protected function __construct () {
+ // Call parent constructor
+ parent::__construct(__CLASS__);
+ }
+
+ /**
+ * Returns a singleton (registry-based) StackableFile instance
+ *
+ * @param $prefix Class prefix
+ * @param $stackName Name of the stack
+ * @return $stackInstance An instance of a StackableFile class
+ */
+ public static final function createFileStackInstance ($prefix, $stackName) {
+ // Construct file stack name
+ $stackFileName = sprintf('%s%s/%s.%s',
+ FrameworkConfiguration::getSelfInstance()->getConfigEntry('base_path'),
+ FrameworkConfiguration::getSelfInstance()->getConfigEntry('base_file_stacks_path'),
+ $stackName,
+ FrameworkConfiguration::getSelfInstance()->getConfigEntry('file_stacks_extension')
+ );
+
+ // If there is no handler?
+ if (Registry::getRegistry()->instanceExists($stackName . '_stack')) {
+ // Get handler from registry
+ $stackInstance = Registry::getRegistry()->getInstance($stackName . '_stack');
+ } else {
+ // Get the handler instance
+ $stackInstance = self::createObjectByConfiguredName($prefix . '_' . $stackName . '_stack_class', array($stackFileName));
+
+ // Add it to the registry
+ Registry::getRegistry()->addInstance($stackName . '_stack', $stackInstance);
+ }
+
+ // Return the instance
+ return $stackInstance;
+ }
+}
+
+// [EOF]
+?>