Source of class-wc-post-data.php - main

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        if ( ! empty( $meta_value ) && is_float( $meta_value ) && ! registered_meta_key_exists( 'post', $meta_key ) && in_array( get_post_type( $object_id ), array_merge( wc_get_order_types(), array( 'shop_coupon', 'product', 'product_variation' ) ), true ) ) {
 
<?php
/**
 * Post Data
 *
 * Standardises certain post data on save.
 *
 * @package WooCommerce\Classes\Data
 * @version 2.2.0
 */
​
defined( 'ABSPATH' ) || exit;
​
/**
 * Post data class.
 */
class WC_Post_Data {
​
    /**
     * Editing term.
     *
     * @var object
     */
    private static $editing_term = null;
​
    /**
     * Hook in methods.
     */
    public static function init() {
        add_filter( 'post_type_link', array( __CLASS__, 'variation_post_link' ), 10, 2 );
        add_action( 'shutdown', array( __CLASS__, 'do_deferred_product_sync' ), 10 );
        add_action( 'set_object_terms', array( __CLASS__, 'force_default_term' ), 10, 5 );
        add_action( 'set_object_terms', array( __CLASS__, 'delete_product_query_transients' ) );
        add_action( 'deleted_term_relationships', array( __CLASS__, 'delete_product_query_transients' ) );
        add_action( 'woocommerce_product_set_stock_status', array( __CLASS__, 'delete_product_query_transients' ) );
        add_action( 'woocommerce_product_set_visibility', array( __CLASS__, 'delete_product_query_transients' ) );
        add_action( 'woocommerce_product_type_changed', array( __CLASS__, 'product_type_changed' ), 10, 3 );
​
        add_action( 'edit_term', array( __CLASS__, 'edit_term' ), 10, 3 );
        add_action( 'edited_term', array( __CLASS__, 'edited_term' ), 10, 3 );
        add_filter( 'update_order_item_metadata', array( __CLASS__, 'update_order_item_metadata' ), 10, 5 );
        add_filter( 'update_post_metadata', array( __CLASS__, 'update_post_metadata' ), 10, 5 );
        add_filter( 'wp_insert_post_data', array( __CLASS__, 'wp_insert_post_data' ) );
        add_filter( 'oembed_response_data', array( __CLASS__, 'filter_oembed_response_data' ), 10, 2 );
​
        // Status transitions.
        add_action( 'transition_post_status', array( __CLASS__, 'transition_post_status' ), 10, 3 );
        add_action( 'delete_post', array( __CLASS__, 'delete_post' ) );
        add_action( 'wp_trash_post', array( __CLASS__, 'trash_post' ) );
        add_action( 'untrashed_post', array( __CLASS__, 'untrash_post' ) );
        add_action( 'before_delete_post', array( __CLASS__, 'before_delete_order' ) );
​
        // Meta cache flushing.
        add_action( 'updated_post_meta', array( __CLASS__, 'flush_object_meta_cache' ), 10, 4 );
        add_action( 'updated_order_item_meta', array( __CLASS__, 'flush_object_meta_cache' ), 10, 4 );
    }
​
    /**
     * Link to parent products when getting permalink for variation.
     *
     * @param string  $permalink Permalink.
     * @param WP_Post $post      Post data.
     *
     * @return string
     */
    public static function variation_post_link( $permalink, $post ) {
        if ( isset( $post->ID, $post->post_type ) && 'product_variation' === $post->post_type ) {
            $variation = wc_get_product( $post->ID );
​
            if ( $variation && $variation->get_parent_id() ) {
                return $variation->get_permalink();
            }
        }
        return $permalink;
    }
​
    /**
     * Sync products queued to sync.
     */
    public static function do_deferred_product_sync() {
        global $wc_deferred_product_sync;
​
        if ( ! empty( $wc_deferred_product_sync ) ) {
            $wc_deferred_product_sync = wp_parse_id_list( $wc_deferred_product_sync );
            array_walk( $wc_deferred_product_sync, array( __CLASS__, 'deferred_product_sync' ) );
        }
    }
​
    /**
     * Sync a product.
     *
     * @param int $product_id Product ID.
     */