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<?php
/**
* StatusNet, the distributed open-source microblogging tool
*
* Cache the LDAP schema in memcache to improve performance
*
* PHP version 5
*
* LICENCE: This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @category Plugin
* @package StatusNet
* @author Craig Andrews <candrews@integralblue.com>
* @copyright 2009 Craig Andrews http://candrews.integralblue.com
* @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
* @link http://status.net/
*/
class MemcacheSchemaCache implements Net_LDAP2_SchemaCache
{
protected $c;
protected $cacheKey;
/**
* Initialize the simple cache
*
* Config is as following:
* memcache memcache instance
* cachekey the key in the cache to look at
*
* @param array $cfg Config array
*/
public function MemcacheSchemaCache($cfg)
{
$this->c = $cfg['c'];
$this->cacheKey = $cfg['cacheKey'];
}
/**
* Return the schema object from the cache
*
* @return Net_LDAP2_Schema|Net_LDAP2_Error|false
*/
public function loadSchema()
{
return $this->c->get($this->cacheKey);
}
/**
* Store a schema object in the cache
*
* This method will be called, if Net_LDAP2 has fetched a fresh
* schema object from LDAP and wants to init or refresh the cache.
*
* To invalidate the cache and cause Net_LDAP2 to refresh the cache,
* you can call this method with null or false as value.
* The next call to $ldap->schema() will then refresh the caches object.
*
* @param mixed $schema The object that should be cached
* @return true|Net_LDAP2_Error|false
*/
public function storeSchema($schema) {
return $this->c->set($this->cacheKey, $schema);
}
}
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