Viewing file:  ObjectCacheBridge.php (6.08 KB) -rw-rw-rw-
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<?php
class W3_ObjectCacheBridge {
/**
* Config
*
* @var W3_Config
*/
var $_config = null;
var $_caches = array();
function __construct() {
$this->_config = w3_instance('W3_Config');
$this->_caches['objectcache'] = w3_instance('W3_ObjectCache');
if (w3_is_pro($this->_config) || w3_is_enterprise($this->_config)) {
if ($this->_config->get_boolean('fragmentcache.enabled'))
$this->_caches['fragmentcache'] =
w3_instance('W3_Pro_FragmentCache');
}
}
/**
* Get from the cache
*
* @param string $id
* @param string $group
* @return mixed
*/
function get($id, $group = 'default') {
$cache = $this->_get_engine($group);
return $cache->get($id, $group);
}
/**
* Set to the cache
*
* @param string $id
* @param mixed $data
* @param string $group
* @param integer $expire
* @return boolean
*/
function set($id, $data, $group = 'default', $expire = 0) {
$cache = $this->_get_engine($group);
return $cache->set($id, $data, $group, $expire);
}
/**
* Delete from the cache
*
* @param string $id
* @param string $group
* @param bool $force
* @return boolean
*/
function delete($id, $group = 'default', $force = false) {
$cache = $this->_get_engine($group);
return $cache->delete($id, $group, $force);
}
/**
* Add to the cache
*
* @param string $id
* @param mixed $data
* @param string $group
* @param integer $expire
* @return boolean
*/
function add($id, $data, $group = 'default', $expire = 0) {
$cache = $this->_get_engine($group);
return $cache->add($id, $data, $group, $expire);
}
/**
* Replace in the cache
*
* @param string $id
* @param mixed $data
* @param string $group
* @param integer $expire
* @return boolean
*/
function replace($id, $data, $group = 'default', $expire = 0) {
$cache = $this->_get_engine($group);
return $cache->replace($id, $data, $group, $expire);
}
/**
* Reset keys
*
* @return boolean
*/
function reset() {
$result = true;
foreach ($this->_caches as $engine)
$result = $result && $engine->reset();
return $result;
}
/**
* Flush cache
*
* @return boolean
*/
function flush() {
$result = true;
foreach ($this->_caches as $engine)
$result = $result && $engine->flush();
return $result;
}
/**
* Add global groups
*
* @param array $groups
* @return void
*/
function add_global_groups($groups) {
if (is_array($groups)) {
$transient = $this->_split_groups_array($groups);
if ($transient) {
$cache = $this->_get_engine('transient');
$cache->add_global_groups($transient);
}
$cache = $this->_get_engine();
$cache->add_global_groups($groups);
} else {
$cache = $this->_get_engine($groups);
$cache->add_global_groups($groups);
}
}
/**
* Add non-persistent groups
*
* @param array $groups
* @return void
*/
function add_nonpersistent_groups($groups) {
if (is_array($groups)) {
$transient = $this->_split_groups_array($groups);
if ($transient) {
$cache = $this->_get_engine('transient');
$cache->add_nonpersistent_groups($transient);
}
$cache = $this->_get_engine();
$cache->add_nonpersistent_groups($groups);
} else {
$cache = $this->_get_engine($groups);
$cache->add_nonpersistent_groups($groups);
}
}
/**
* Checks groups and return transients in an array if exists and unset from group parameter
* @param $groups
* @return array
*/
private function _split_groups_array(&$groups) {
$transient = array();
if (($key = array_search('site-transient', $groups)) !== false) {
unset($groups[$key]);
$transient[] = 'site-transient';
}
if (($key = array_search('transient', $groups)) !== false) {
unset($groups[$key]);
$transient[] = 'transient';
}
return $transient;
}
/**
* Return engine based on which group the OC value belongs to.
*
* @param string $group
* @return mixed
*/
private function _get_engine($group = '') {
if (!isset($this->_caches['fragmentcache']))
return $this->_caches['objectcache'];
switch($group) {
case 'transient':
case 'site-transient':
return $this->_caches['fragmentcache'];
default:
return $this->_caches['objectcache'];
}
}
/**
* Decrement numeric cache item's value
*
* @param int|string $id The cache key to increment
* @param int $offset The amount by which to decrement the item's value. Default is 1.
* @param string $group The group the key is in.
* @return bool|int False on failure, the item's new value on success.
*/
function decr( $id, $offset = 1, $group = 'default' ) {
$cache = $this->_get_engine($group);
return $cache->decr($id, $offset, $group);
}
/**
* Increment numeric cache item's value
*
* @param int|string $id The cache key to increment
* @param int $offset The amount by which to increment the item's value. Default is 1.
* @param string $group The group the key is in.
* @return false|int False on failure, the item's new value on success.
*/
function incr( $id, $offset = 1, $group = 'default' ) {
$cache = $this->_get_engine($group);
return $cache->incr($id, $offset, $group);
}
function switch_to_blog($blog_id) {
foreach ($this->_caches as $cache)
$cache->switch_blog($blog_id);
}
}
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