is_product_in_wishlist – query optimization

Hi,

I’m trying to optimize queries at couple websites. I see something in function is_product_in_wishlist:

$default_wishlist = $this->get_wishlists( array( ‘user_id’ => get_current_user_id(), ‘is_default’ => 1 ) )

this code can be replaced with function which caches result. eg. theme calls is_product_in_wishlist many times (in my case 50-60 times) and at each call get_wishlists runs same SQL query + …

So, proposal is:

protected static $default_wishlist;

function get_default_wishlist_id() {
if ( isset( self::$default_wishlist ) ) return self::$default_wishlist[0][‘ID’];

self::$default_wishlist = $this->get_wishlists( array( ‘user_id’ => get_current_user_id(), ‘is_default’ => 1 );
return self::$default_wishlist[0][‘ID’];
}

I hope that’ll improve a little performance.

Thanks,
Sasa