Current File : /var/www/html/ceaa/wp-content/plugins/bbpress/includes/core/cache.php
<?php
/**
* bbPress Cache Helpers
*
* Helper functions used to communicate with WordPress's various caches. Many
* of these functions are used to work around specific WordPress nuances. They
* are subject to changes, tweaking, and will need iteration as performance
* improvements are made to WordPress core.
*
* @package bbPress
* @subpackage Cache
*/
// Exit if accessed directly
if ( !defined( 'ABSPATH' ) ) exit;
/** Helpers *******************************************************************/
/**
* Skip invalidation of child post content when editing a parent.
*
* This prevents invalidating caches for topics and replies when editing a forum
* or a topic. Without this in place, WordPress will attempt to invalidate all
* child posts whenever a parent post is modified. This can cause thousands of
* cache invalidations to occur on a single edit, which is no good for anyone.
*
* @since bbPress (r4011)
*
* @package bbPress
* @subpackage Cache
*/
class BBP_Skip_Children {
/**
* @var int Post ID being updated
*/
private $updating_post = 0;
/**
* @var bool The original value of $_wp_suspend_cache_invalidation global
*/
private $original_cache_invalidation = false;
/** Methods ***************************************************************/
/**
* Hook into the 'pre_post_update' action.
*
* @since bbPress (r4011)
*/
public function __construct() {
add_action( 'pre_post_update', array( $this, 'pre_post_update' ) );
}
/**
* Only clean post caches for main bbPress posts.
*
* Check that the post being updated is a bbPress post type, saves the
* post ID to be used later, and adds an action to 'clean_post_cache' that
* prevents child post caches from being cleared.
*
* @since bbPress (r4011)
*
* @param int $post_id The post ID being updated
* @return If invalid post data
*/
public function pre_post_update( $post_id = 0 ) {
// Bail if post ID is not a bbPress post type
if ( empty( $post_id ) || ! bbp_is_custom_post_type( $post_id ) )
return;
// Store the $post_id
$this->updating_post = $post_id;
// Skip related post cache invalidation. This prevents invalidating the
// caches of the child posts when there is no reason to do so.
add_action( 'clean_post_cache', array( $this, 'skip_related_posts' ) );
}
/**
* Skip cache invalidation of related posts if the post ID being invalidated
* is not the one that was just updated.
*
* @since bbPress (r4011)
*
* @param int $post_id The post ID of the cache being invalidated
* @return If invalid post data
*/
public function skip_related_posts( $post_id = 0 ) {
// Bail if this post is not the current bbPress post
if ( empty( $post_id ) || ( $this->updating_post !== $post_id ) )
return;
// Stash the current cache invalidation value in a variable, so we can
// restore back to it nicely in the future.
global $_wp_suspend_cache_invalidation;
$this->original_cache_invalidation = $_wp_suspend_cache_invalidation;
// Turn off cache invalidation
wp_suspend_cache_invalidation( true );
// Restore cache invalidation
add_action( 'wp_insert_post', array( $this, 'restore_cache_invalidation' ) );
}
/**
* Restore the cache invalidation to its previous value.
*
* @since bbPress (r4011)
* @uses wp_suspend_cache_invalidation()
*/
public function restore_cache_invalidation() {
wp_suspend_cache_invalidation( $this->original_cache_invalidation );
}
}
new BBP_Skip_Children();
/** General *******************************************************************/
/**
* Will clean a post in the cache.
*
* Will call to clean the term object cache associated with the post ID.
*
* @since bbPress (r4040)
*
* @uses do_action() Calls 'bbp_clean_post_cache' on $id
* @param object|int $_post The post object or ID to remove from the cache
*/
function bbp_clean_post_cache( $_post = '' ) {
// Bail if no post
$_post = get_post( $_post );
if ( empty( $_post ) )
return;
wp_cache_delete( $_post->ID, 'posts' );
wp_cache_delete( $_post->ID, 'post_meta' );
clean_object_term_cache( $_post->ID, $_post->post_type );
do_action( 'bbp_clean_post_cache', $_post->ID, $_post );
// Child query types to clean
$post_types = array(
bbp_get_topic_post_type(),
bbp_get_forum_post_type(),
bbp_get_reply_post_type()
);
// Loop through query types and clean caches
foreach ( $post_types as $post_type ) {
wp_cache_delete( 'bbp_get_forum_' . $_post->ID . '_reply_id', 'bbpress_posts' );
wp_cache_delete( 'bbp_parent_' . $_post->ID . '_type_' . $post_type . '_child_last_id', 'bbpress_posts' );
wp_cache_delete( 'bbp_parent_' . $_post->ID . '_type_' . $post_type . '_child_count', 'bbpress_posts' );
wp_cache_delete( 'bbp_parent_public_' . $_post->ID . '_type_' . $post_type . '_child_ids', 'bbpress_posts' );
wp_cache_delete( 'bbp_parent_all_' . $_post->ID . '_type_' . $post_type . '_child_ids', 'bbpress_posts' );
}
// Invalidate parent caches
if ( ! empty( $_post->post_parent ) ) {
bbp_clean_post_cache( $_post->post_parent );
}
}
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