blob: 073ad1a84481521a8187abfd220a147090202a1b (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
<?php
namespace Prado\Data\SqlMap\DataMapper;
/**
* TSqlMapCache class file contains FIFO, LRU, and GLOBAL cache implementations.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @link http://www.pradosoft.com/
* @copyright Copyright © 2005-2014 PradoSoft
* @license http://www.pradosoft.com/license/
* @package Prado\Data\SqlMap\DataMapper
*/
/**
* Least recently used cache implementation, removes
* object that was accessed last when the cache is full.
*
* @author Wei Zhuo <weizhuo[at]gmail[dot]com>
* @package Prado\Data\SqlMap\DataMapper
* @since 3.1
*/
class TSqlMapLruCache extends TSqlMapCache
{
/**
* @return mixed Gets a cached object with the specified key.
*/
public function get($key)
{
if($this->_keyList->contains($key))
{
$this->_keyList->remove($key);
$this->_keyList->add($key);
return $this->_cache->itemAt($key);
}
}
/**
* Stores a value identified by a key into cache.
* The expire and dependency parameters are ignored.
* @param string the key identifying the value to be cached
* @param mixed the value to be cached
*/
public function set($key, $value,$expire=0,$dependency=null)
{
$this->_cache->add($key, $value);
$this->_keyList->add($key);
if($this->_keyList->getCount() > $this->_cacheSize)
{
$oldestKey = $this->_keyList->removeAt(0);
$this->_cache->remove($oldestKey);
}
}
}
|