AbstractDataCache.php

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<?php
 
namespace Ubiquity\cache\system;
 
use Ubiquity\exceptions\CacheException;
 
abstract class AbstractDataCache {
    protected $_root;
    protected $postfix;
 
    public function __construct($root, $postfix = '') {
        $this->setRoot ( $root );
        $this->postfix = $postfix;
    }
 
    public function init() {
    }
 
    abstract public function exists($key);
 
    public function expired($key, $duration) {
        if ($this->exists ( $key )) {
            if (\is_int ( $duration ) && $duration !== 0) {
                return \time () - $this->getTimestamp ( $key ) > $duration;
            } else {
                return false;
            }
        } else {
            return true;
        }
    }
 
    abstract public function store($key, $code, $tag = null);
 
    public function getRoot() {
        return $this->_root;
    }
 
    public function setRoot($_root) {
        $this->_root = $_root;
    }
 
    abstract public function fetch($key);
 
    abstract public function file_get_contents($key);
 
    abstract public function getTimestamp($key);
 
    abstract public function remove($key);
 
    abstract public function clear();
 
    abstract public function getCacheFiles($type);
 
    abstract public function clearCache($type);
 
    public function getCacheInfo() {
        return "Cache system is an instance of <b>" . \get_class ( $this ) . "</b>.";
    }
 
    abstract public function getEntryKey($key);
}