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| Dir : /home/trave494/live2news.com/wp-content/plugins/w3-total-cache/ObjectCache_WpObjectCache.php |
<?php
namespace W3TC;
class ObjectCache_WpObjectCache {
private $_config = null;
private $_default_cache;
private $_caches = array();
private $_cache_by_group = array();
function __construct() {
$this->_config = Dispatcher::config();
$this->_default_cache = Dispatcher::component(
'ObjectCache_WpObjectCache_Regular' );
$this->_caches[] = $this->_default_cache;
}
/**
* Registers cache object so that its used for specific groups of
* object cache instead of default cache
*/
public function register_cache( $cache, $use_for_object_groups ) {
$this->_caches[] = $cache;
foreach ( $use_for_object_groups as $group )
$this->_cache_by_group[$group] = $cache;
}
/**
* Get from the cache
*
* @param string $id
* @param string $group
* @return mixed
*/
function get( $id, $group = 'default', $force = false, &$found = null ) {
$cache = $this->_get_engine( $group );
return $cache->get( $id, $group, $force, $found );
}
/**
* Retrieves multiple values from the cache in one call.
*
* @since 2.2.8
*
* @param array $ids Array of keys under which the cache contents are stored.
* @param string $group Optional. Where the cache contents are grouped. Default 'default'.
* @param bool $force Optional. Whether to force an update of the local cache
* from the persistent cache. Default false.
*
* @return array Array of return values, grouped by key. Each value is either
* the cache contents on success, or false on failure.
*/
public function get_multiple( $ids, $group = 'default', $force = false ) {
$cache = $this->_get_engine( $group );
return $cache->get_multiple( $ids, $group, $force );
}
/**
* 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 );
}
/**
* Sets multiple values to the cache in one call.
*
* @since 2.2.8
*
* @param array $data Array of key and value to be set.
* @param string $group Optional. Where the cache contents are grouped. Default empty.
* @param int $expire Optional. When to expire the cache contents, in seconds.
* Default 0 (no expiration).
*
* @return bool[] Array of return values, grouped by key. Each value is always true.
*/
public function set_multiple( $data, $group = 'default', $expire = 0 ) {
$cache = $this->_get_engine( $group );
return $cache->set_multiple( $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 );
}
/**
* Deletes multiple values from the cache in one call.
*
* @since 2.2.8
*
* @param array $keys Array of keys to be deleted.
* @param string $group Optional. Where the cache contents are grouped. Default empty.
*
* @return bool[] Array of return values, grouped by key. Each value is either
* true on success, or false if the contents were not deleted.
*/
public function delete_multiple( $keys, $group = 'default' ) {
$cache = $this->_get_engine( $group );
return $cache->delete_multiple( $keys, $group );
}
/**
* 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 );
}
/**
* Adds multiple values to the cache in one call.
*
* @since 2.2.8
*
* @param array $data Array of keys and values to be added.
* @param string $group Optional. Where the cache contents are grouped. Default empty.
* @param int $expire Optional. When to expire the cache contents, in seconds.
* Default 0 (no expiration).
*
* @return bool[] Array of return values, grouped by key. Each value is either
* true on success, or false if cache key and group already exist.
*/
public function add_multiple( array $data, $group = '', $expire = 0 ) {
$cache = $this->_get_engine( $group );
return $cache->add_multiple( $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 ) )
$groups = array( $groups );
foreach ( $groups as $group ) {
$cache = $this->_get_engine( $group );
$cache->add_global_groups( array( $group ) );
}
}
/**
* Add non-persistent groups
*
* @param array $groups
* @return void
*/
function add_nonpersistent_groups( $groups ) {
if ( !is_array( $groups ) )
$groups = array( $groups );
foreach ( $groups as $group ) {
$cache = $this->_get_engine( $group );
$cache->add_nonpersistent_groups( array( $group ) );
}
}
/**
* Return engine based on which group the OC value belongs to.
*
* @param string $group
* @return mixed
*/
private function _get_engine( $group = '' ) {
if ( isset( $this->_cache_by_group[$group] ) )
return $this->_cache_by_group[$group];
return $this->_default_cache;
}
/**
* 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 );
}
}