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77 lines
1.6 KiB
77 lines
1.6 KiB
13 years ago
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<?php
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/**
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* Hashtable cache ( nothing special )
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* Should be replaced with something like
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*/
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class Cache
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{
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private $objectList = array();
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/**
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* Add an object to the cache
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* @param ObjectModel $object
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*/
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public function addObject(ObjectModel &$object)
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{
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if ( !isset($this->objectList[$object->getId()]))
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{
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$this->objectList[$object->getId()] = array();
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}
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$this->objectList[$object->getId()]['checksum'] = sha1(serialize($object));
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$this->objectList[$object->getId()]['object'] = $object;
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}
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/**
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* Check to see if the object has been updated
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* @param ObjectModel $object
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*/
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public function hasChanged(ObjectModel &$object)
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{
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// Is the object even cached
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if ( !isset($this->objectList[$object->getId()]))
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{
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return false;
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}
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// Does it have the same checksum
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if ($this->objectList[$object->getId()]['checksum'] == sha1(serialize($object)) )
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{
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return true;
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}
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// If they were the same then it would have already exited
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return false;
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}
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/**
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* Get object from the cache. Returns null if not found.
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* @param type $id
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*/
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public function getObject($id)
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{
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// Is the object cached
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if ( isset($this->objectList[$id]['object'] ) ) {
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// Return the object from the cache
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return $this->objectList[$id]['object'];
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}
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// Object wasn't found so return null
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return null;
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}
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/**
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* Remove the object from the cache
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* @param type $id
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*/
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public function deleteObject($id)
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{
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// Unset it from the array
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unset( $this->objectList[$id]);
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}
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}
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?>
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