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 $cachedData = array();
  21
  22         /**
  23          * (@inheritdoc)
  24          */
  25         public function get($key)
  26         {
  27                 if (isset($this->cachedData[$key])) {
  28                         return $this->cachedData[$key];
  29                 }
  30                 return null;
  31         }
  32
  33         /**
  34          * (@inheritdoc)
  35          */
  36         public function set($key, $value, $ttl = Cache::FIVE_MINUTES)
  37         {
  38                 $this->cachedData[$key] = $value;
  39                 return true;
  40         }
  41
  42         /**
  43          * (@inheritdoc)
  44          */
  45         public function delete($key)
  46         {
  47                 unset($this->cachedData[$key]);
  48                 return true;
  49         }
  50
  51         /**
  52          * (@inheritdoc)
  53          */
  54         public function clear($outdated = true)
  55         {
  56                 // Array doesn't support TTL so just don't delete something
  57                 if ($outdated) {
  58                         return true;
  59                 }
  60
  61                 $this->cachedData = [];
  62                 return true;
  63         }
  64
  65         /**
  66          * (@inheritdoc)
  67          */
  68         public function add($key, $value, $ttl = Cache::FIVE_MINUTES)
  69         {
  70                 if (isset($this->cachedData[$key])) {
  71                         return false;
  72                 } else {
  73                         return $this->set($key, $value, $ttl);
  74                 }
  75         }
  76
  77         /**
  78          * (@inheritdoc)
  79          */
  80         public function compareSet($key, $oldValue, $newValue, $ttl = Cache::FIVE_MINUTES)
  81         {
  82                 if ($this->get($key) === $oldValue) {
  83                         return $this->set($key, $newValue);
  84                 } else {
  85                         return false;
  86                 }
  87         }
  88 }