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<?php
/**
* Meta API: WP_Metadata_Lazyloader class
*
* @package WordPress
* @subpackage Meta
* @since 4.5.0
*/
/**
* Core class used for lazy-loading object metadata.
*
* When loading many objects of a given type, such as posts in a WP_Query loop, it often makes
* sense to prime various metadata caches at the beginning of the loop. This means fetching all
* relevant metadata with a single database query, a technique that has the potential to improve
* performance dramatically in some cases.
*
* In cases where the given metadata may not even be used in the loop, we can improve performance
* even more by only priming the metadata cache for affected items the first time a piece of metadata
* is requested - ie, by lazy-loading it. So, for example, comment meta may not be loaded into the
* cache in the comments section of a post until the first time get_comment_meta() is called in the
* context of the comment loop.
*
* WP uses the WP_Metadata_Lazyloader class to queue objects for metadata cache priming. The class
* then detects the relevant get_*_meta() function call, and queries the metadata of all queued objects.
*
* Do not access this class directly. Use the wp_metadata_lazyloader() function.
*
* @since 4.5.0
*/
class WP_Metadata_Lazyloader {
/**
* Pending objects queue.
*
* @since 4.5.0
* @var array
*/
protected $pending_objects;
/**
* Settings for supported object types.
*
* @since 4.5.0
* @var array
*/
protected $settings = array();
/**
* Constructor.
*
* @since 4.5.0
*/
public function __construct() {
$this->settings = array(
'term' => array(
'filter' => 'get_term_metadata',
'callback' => array( $this, 'lazyload_term_meta' ),
),
'comment' => array(
'filter' => 'get_comment_metadata',
'callback' => array( $this, 'lazyload_comment_meta' ),
),
);
}
/**
* Adds objects to the metadata lazy-load queue.
*
* @since 4.5.0
*
* @param string $object_type Type of object whose meta is to be lazy-loaded. Accepts 'term' or 'comment'.
* @param array $object_ids Array of object IDs.
* @return bool|WP_Error True on success, WP_Error on failure.
*/
public function queue_objects( $object_type, $object_ids ) {
if ( ! isset( $this->settings[ $object_type ] ) ) {
return new WP_Error( 'invalid_object_type', __( 'Invalid object type.' ) );
}
$type_settings = $this->settings[ $object_type ];
if ( ! isset( $this->pending_objects[ $object_type ] ) ) {
$this->pending_objects[ $object_type ] = array();
}
foreach ( $object_ids as $object_id ) {
// Keyed by ID for faster lookup.
if ( ! isset( $this->pending_objects[ $object_type ][ $object_id ] ) ) {
$this->pending_objects[ $object_type ][ $object_id ] = 1;
}
}
add_filter( $type_settings['filter'], $type_settings['callback'] );
/**
* Fires after objects are added to the metadata lazy-load queue.
*
* @since 4.5.0
*
* @param array $object_ids Array of object IDs.
* @param string $object_type Type of object being queued.
* @param WP_Metadata_Lazyloader $lazyloader The lazy-loader object.
*/
do_action( 'metadata_lazyloader_queued_objects', $object_ids, $object_type, $this );
}
/**
* Resets lazy-load queue for a given object type.
*
* @since 4.5.0
*
* @param string $object_type Object type. Accepts 'comment' or 'term'.
* @return bool|WP_Error True on success, WP_Error on failure.
*/
public function reset_queue( $object_type ) {
if ( ! isset( $this->settings[ $object_type ] ) ) {
return new WP_Error( 'invalid_object_type', __( 'Invalid object type.' ) );
}
$type_settings = $this->settings[ $object_type ];
$this->pending_objects[ $object_type ] = array();
remove_filter( $type_settings['filter'], $type_settings['callback'] );
}
/**
* Lazy-loads term meta for queued terms.
*
* This method is public so that it can be used as a filter callback. As a rule, there
* is no need to invoke it directly.
*
* @since 4.5.0
*
* @param mixed $check The `$check` param passed from the 'get_term_metadata' hook.
* @return mixed In order not to short-circuit `get_metadata()`. Generally, this is `null`, but it could be
* another value if filtered by a plugin.
*/
public function lazyload_term_meta( $check ) {
if ( ! empty( $this->pending_objects['term'] ) ) {
update_termmeta_cache( array_keys( $this->pending_objects['term'] ) );
// No need to run again for this set of terms.
$this->reset_queue( 'term' );
}
return $check;
}
/**
* Lazy-loads comment meta for queued comments.
*
* This method is public so that it can be used as a filter callback. As a rule, there is no need to invoke it
* directly, from either inside or outside the `WP_Query` object.
*
* @since 4.5.0
*
* @param mixed $check The `$check` param passed from the {@see 'get_comment_metadata'} hook.
* @return mixed The original value of `$check`, so as not to short-circuit `get_comment_metadata()`.
*/
public function lazyload_comment_meta( $check ) {
if ( ! empty( $this->pending_objects['comment'] ) ) {
update_meta_cache( 'comment', array_keys( $this->pending_objects['comment'] ) );
// No need to run again for this set of comments.
$this->reset_queue( 'comment' );
}
return $check;
}
}
Cases also available
Visit us at The Foundry and speak with a member of our team to discuss the options available to you. If a space is available you can move in straight away! If there is not a space available right away, you can opt to be placed on our vendor waiting list or look at an alternative option such as one of our bespoke display cases.
No problem! We encourage prospective vendors to move in and start selling as soon as possible. Pro rated booth rent for the remaining period until the first of the following month will be due at contract signing.
Yes. We have a standard form contract which outlines the terms of your rental agreement.
We charge a commission of 10% on all sales.
No! Here at The Foundry we believe that you should discover the best selling environment for you. We have a six month initial term. Following this, we require just a thirty day written notice if you wish to change or terminate your rental agreement.
Rent is paid in advance starting on the first day of every month. For example: The rent due for August is due on August first.
For the convenience of all our vendors, we automatically process your rent payment from your previous month sales. If you do not have sufficient sales to cover the rent due we will notify you that payment is required. We recommend that all vendors take advantage of our vendor sales tracking system, QuailHQ for $5.00 per month.
We work in partnership with QuailHQ to provide online access to sales data 24 hours a day, 7 days a week. QuailHQ is available online and as an app for ios and android.
We recommend that all vendors take advantage of our vendor sales tracking system, QuailHQ for $5.00 per month.
Yes! We operate Social Media accounts on various platforms. In addition to our renowned service, we also regularly feature select merchandise to our social media platforms to increase awareness and bolster vendor sales. Make sure to include interesting an unique merchandise in your booth to be in with a chance to be featured on our social media!
We are open daily from 10:00 AM to 6:00 PM for you to move in and start selling! From all of us at The Foundry, we loom forward to working with you and can’t wait for you to get started!