/**
* A simple memory cache (similar to a registry)
*
- * @author Roland Haeder <webmaster@ship-simu.org>
+ * @author Roland Haeder <webmaster@shipsimu.org>
* @version 0.0.0
- * @copyright Copyright (c) 2007 - 2009 Roland Haeder, this is free software
+ * @copyright Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2013 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
/**
* The "memory cache" is simply a wrapped object array
*/
- private $dataCache = null;
+ private $dataCache = NULL;
/**
* Protected constructor
protected function __construct () {
// Call parent constructor
parent::__construct(__CLASS__);
-
- // Clean up a little
- $this->removeNumberFormaters();
- $this->removeSystemArray();
}
/**
*
* @return $cacheInstance An instance of this cache class
*/
- public final static function createMemoryCache () {
+ public static final function createMemoryCache () {
// Get a new instance
$cacheInstance = new MemoryCache();
/**
* Does the specified offset exist in cache?
*
- * @param $offset The offset we are looking for
- * @return $exists Wether the offset exists
+ * @param $offset The offset we are looking for
+ * @param $arrayElement If type is array, then this element must be found
+ * @param $minimumCount If array element is found then this count must at least match
+ * @return $exists Whether the offset exists
*/
- public final function offsetExists ($offset) {
+ public function offsetExists ($offset, $arrayElement = NULL, $minimumCount = 0) {
+ // Is it there?
$exists = $this->dataCache->offsetExists($offset);
+
+ // So look for array element?
+ if (($exists === TRUE) && (!is_null($arrayElement))) {
+ // Get it
+ $array = $this->offsetGet($offset);
+
+ // Is it an array and element is found?
+ if ((is_array($array)) && (isset($array[$arrayElement]))) {
+ // Is an array and element is found, so check count
+ $exists = (count($array[$arrayElement]) >= $minimumCount);
+ } else {
+ // Not found
+ $exists = FALSE;
+ }
+ } // END - if
+
+ // Return status
return $exists;
}
* @param $data Data to store in cache
* @return void
*/
- public final function offsetSet ($offset, $data) {
+ public function offsetSet ($offset, $data) {
$this->dataCache->offsetSet($offset, $data);
}
* @param $offset The offset we shall set
* @return $data Data to store in cache
*/
- public final function offsetGet ($offset) {
+ public function offsetGet ($offset) {
// Default is offset not found
- $data = null;
+ $data = NULL;
// Is the offset there?
if ($this->offsetExists($offset)) {
// Then get the data from it
$data = $this->dataCache->offsetGet($offset);
- }
+ } // END - if
// Return data
return $data;
}
+
+ /**
+ * Purges the given cache entry
+ *
+ * @param $offset The offset we shall set
+ * @return void
+ */
+ public function purgeOffset ($offset) {
+ // Is the offset there?
+ if ($this->offsetExists($offset)) {
+ // Purge only existing keys
+ //* DEBUG: */ self::createDebugInstance(__CLASS__)->debugOutput('CACHE: Unsetting cache ' . $offset);
+ $this->dataCache->offsetUnset($offset);
+ } // END - if
+ }
}
// [EOF]