stack_cache.php

См. документацию.

<?php

 
class CStackCacheManager
{
    var $cache = array();
    var $cacheLen = array();
    var $cacheTTL = array();
    var $eventHandlerAdded = false;
 
    function SetLength($entity, $length)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;
 
        if(isset($this->cache[$entity]) && is_object($this->cache[$entity]))
            $this->cache[$entity]->SetLength($length);
        else
            $this->cacheLen[$entity] = $length;
    }
 
    function SetTTL($entity, $ttl)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;
 
        if(isset($this->cache[$entity]) && is_object($this->cache[$entity]))
            $this->cache[$entity]->SetTTL($ttl);
        else
            $this->cacheTTL[$entity] = $ttl;
    }
 
    function Init($entity, $length = 0, $ttl = 0)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;
 
        if (!$this->eventHandlerAdded)
        {
            AddEventHandler("main", "OnEpilog", array("CStackCacheManager", "SaveAll"));
            $this->eventHandlerAdded = true;
        }
 
        if($length <= 0 && isset($this->cacheLen[$entity]))
            $length = $this->cacheLen[$entity];
 
        if($ttl <= 0 && isset($this->cacheTTL[$entity]))
            $ttl = $this->cacheTTL[$entity];
 
        if (!array_key_exists($entity, $this->cache))
            $this->cache[$entity] = new CStackCacheEntry($entity, $length, $ttl);
    }
 
    function Load($entity)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;
 
        if (!array_key_exists($entity, $this->cache))
            $this->Init($entity);
 
        $this->cache[$entity]->Load();
    }
 
    //NO ONE SHOULD NEVER EVER USE INTEGER $id HERE
    function Clear($entity, $id = false)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;
 
        if (!array_key_exists($entity, $this->cache))
            $this->Load($entity);
 
        if ($id !== false)
            $this->cache[$entity]->DeleteEntry($id);
        else
            $this->cache[$entity]->Clean();
    }
 
    // Clears all managed_cache
    function CleanAll()
    {
        $this->cache = array();
 
        $objCache = new CPHPCache;
        $objCache->CleanDir(false, "stack_cache");
    }
 
    //NO ONE SHOULD NEVER EVER USE INTEGER $id HERE
    function Exist($entity, $id)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return false;
 
        if (!array_key_exists($entity, $this->cache))
            $this->Load($entity);
 
        return array_key_exists($id, $this->cache[$entity]->values);
    }
 
    //NO ONE SHOULD NEVER EVER USE INTEGER $id HERE
    function Get($entity, $id)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return false;
 
        if (!array_key_exists($entity, $this->cache))
            $this->Load($entity);
 
        return $this->cache[$entity]->Get($id);
    }
 
    //NO ONE SHOULD NEVER EVER USE INTEGER $id HERE
    function Set($entity, $id, $value)
    {
        if (defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;
 
        if (!array_key_exists($entity, $this->cache))
            $this->Load($entity);
 
        $this->cache[$entity]->Set($id, $value);
    }
 
    function Save($entity)
    {
        if(defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;
 
        if(array_key_exists($entity, $this->cache))
            $this->cache[$entity]->Save();
    }
 
    public static function SaveAll()
    {
        if(defined("BITRIX_SKIP_STACK_CACHE") && BITRIX_SKIP_STACK_CACHE)
            return;

        global $stackCacheManager;
 
        foreach($stackCacheManager->cache as $value)
        {
            $value->Save();
        }
    }
 
    function MakeIDFromArray($values)
    {
        $id = "id";
 
        sort($values);
 
        for ($i = 0, $c = count($values); $i < $c; $i++)
            $id .= "_".$values[$i];
 
        return $id;
    }
}