/**
* A filter chain for pre and post filters
*
- * @author Roland Haeder <webmaster@ship-simu.org>
+ * @author Roland Haeder <webmaster@shipsimu.org>
* @version 0.0.0
- * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009, 2010 Core Developer Team
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2014 Core Developer Team
* @license GNU GPL 3.0 or any newer version
- * @link http://www.ship-simu.org
+ * @link http://www.shipsimu.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
* 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 FilterChain extends BaseFrameworkSystem {
- /**
- * All filters together
- */
- private $filters = array();
-
+class FilterChain extends BaseFrameworkSystem implements Registerable {
/**
* Protected constructor
*
*
* @return $chainInstance An instance of this class
*/
- public final static function createFilterChain () {
+ public static final function createFilterChain () {
// Get a new instance
$chainInstance = new FilterChain();
* @return void
*/
public final function addFilter (Filterable $filterInstance) {
- $this->filters[] = $filterInstance;
+ $this->pushValueToGenericArrayKey('filters', 'generic', 'dummy', $filterInstance);
}
/**
- * Process all added filters
+ * Getter for filters array
+ *
+ * @return $filters The filters array holding all filter instances
+ */
+ protected function getFilters () {
+ return $this->getGenericArrayKey('filters', 'generic', 'dummy');
+ }
+
+ /**
+ * Process all added filters. Please note that filters must throw
+ * FilterChainException if they need to interrupt the filter chain.
*
* @param $requestInstance An instance of a request class
* @param $responseInstance An instance of a response class
*/
public function processFilters (Requestable $requestInstance, Responseable $responseInstance) {
// Run all filters
- //* DEBUG */ echo "COUNT=".count($this->filters)."<br />\n";
- foreach ($this->filters as $filterInstance) {
+ //* DEBUG */ self::createDebugInstance(__CLASS__)->debugOutput('COUNT=' . $this->countGenericArray('filters'));
+ foreach ($this->getFilters() as $filterInstance) {
+ // Must be an instance of Filterable
+ assert($filterInstance instanceof Filterable);
+
// Try to execute this filter
try {
- //* DEBUG */ echo "FILTER: ".$filterInstance->__toString().": Processing started.<br />\n";
+ //* DEBUG */ self::createDebugInstance(__CLASS__)->debugOutput('FILTER: ' . $filterInstance->__toString() . ': Processing started.');
$filterInstance->execute($requestInstance, $responseInstance);
- //* DEBUG */ echo "FILTER: ".$filterInstance->__toString().": Processing ended.<br />\n";
+ //* DEBUG */ self::createDebugInstance(__CLASS__)->debugOutput('FILTER: ' . $filterInstance->__toString() . ': Processing ended.');
} catch (FilterChainException $e) {
// This exception can be thrown to just skip any further processing
+ self::createDebugInstance(__CLASS__)->debugOutput('Failed to execute lase filter ' . $filterInstance->__toString() . ': ' . $e->getMessage());
break;
}
} // END - foreach