src/Core/Cache/ArrayCache.php

   1 <?php
   2
   3 namespace Friendica\Core\Cache;
   4
   5
   6 use Friendica\Core\Cache;
   7
   8 /**
   9  * Implementation of the IMemoryCacheDriver mainly for testing purpose
  10  *
  11  * Class ArrayCache
  12  *
  13  * @package Friendica\Core\Cache
  14  */
  15 class ArrayCache extends AbstractCacheDriver implements IMemoryCacheDriver
  16 {
  17         use TraitCompareDelete;
  18
  19         /** @var array Array with the cached data */
  20         protected $cachedData = array();
  21
  22         /**
  23          * (@inheritdoc)
  24          */
  25         public function getAllKeys($prefix = null)
  26         {
  27                 return $this->filterArrayKeysByPrefix($this->cachedData, $prefix);
  28         }
  29
  30         /**
  31          * (@inheritdoc)
  32          */
  33         public function get($key)
  34         {
  35                 if (isset($this->cachedData[$key])) {
  36                         return $this->cachedData[$key];
  37                 }
  38                 return null;
  39         }
  40
  41         /**
  42          * (@inheritdoc)
  43          */
  44         public function set($key, $value, $ttl = Cache::FIVE_MINUTES)
  45         {
  46                 $this->cachedData[$key] = $value;
  47                 return true;
  48         }
  49
  50         /**
  51          * (@inheritdoc)
  52          */
  53         public function delete($key)
  54         {
  55                 unset($this->cachedData[$key]);
  56                 return true;
  57         }
  58
  59         /**
  60          * (@inheritdoc)
  61          */
  62         public function clear($outdated = true)
  63         {
  64                 // Array doesn't support TTL so just don't delete something
  65                 if ($outdated) {
  66                         return true;
  67                 }
  68
  69                 $this->cachedData = [];
  70                 return true;
  71         }
  72
  73         /**
  74          * (@inheritdoc)
  75          */
  76         public function add($key, $value, $ttl = Cache::FIVE_MINUTES)
  77         {
  78                 if (isset($this->cachedData[$key])) {
  79                         return false;
  80                 } else {
  81                         return $this->set($key, $value, $ttl);
  82                 }
  83         }
  84
  85         /**
  86          * (@inheritdoc)
  87          */
  88         public function compareSet($key, $oldValue, $newValue, $ttl = Cache::FIVE_MINUTES)
  89         {
  90                 if ($this->get($key) === $oldValue) {
  91                         return $this->set($key, $newValue);
  92                 } else {
  93                         return false;
  94                 }
  95         }
  96 }