bp_xprofile_update_meta_cache( array $object_ids = array() )

function bp_xprofile_update_meta_cache( $object_ids = array() ) {
	global $wpdb;

	// Bail if no objects.
	if ( empty( $object_ids ) ) {
		return false;
	}

	$bp = buddypress();

	// Define the array where uncached object IDs will be stored.
	$uncached_object_ids = array(
		'group',
		'field',
		'data'
	);

	// Define the cache groups for the 3 types of XProfile metadata.
	$cache_groups = array(
		'group' => 'xprofile_group_meta',
		'field' => 'xprofile_field_meta',
		'data'  => 'xprofile_data_meta',
	);

	// No reason to query yet.
	$do_query = false;

	// Loop through object types and look for uncached data.
	foreach ( $uncached_object_ids as $object_type ) {

		// Skip if empty object type.
		if ( empty( $object_ids[ $object_type ] ) ) {
			continue;
		}

		// Sanitize $object_ids passed to the function.
		$object_type_ids = wp_parse_id_list( $object_ids[ $object_type ] );

		// Get non-cached IDs for each object type.
		$uncached_object_ids[ $object_type ] = bp_get_non_cached_ids( $object_type_ids, $cache_groups[ $object_type ] );

		// Set the flag to do the meta query.
		if ( ! empty( $uncached_object_ids[ $object_type ] ) && ( false === $do_query ) ) {
			$do_query = true;
		}
	}

	// Bail if no uncached items.
	if ( false === $do_query ) {
		return;
	}

	// Setup where conditions for query.
	$where_sql        = '';
	$where_conditions = array();

	// Loop through uncached objects and prepare to query for them.
	foreach ( $uncached_object_ids as $otype => $oids ) {

		// Skip empty object IDs.
		if ( empty( $oids ) ) {
			continue;
		}

		// Compile WHERE query conditions for uncached metadata.
		$oids_sql           = implode( ',', wp_parse_id_list( $oids ) );
		$where_conditions[] = $wpdb->prepare( "( object_type = %s AND object_id IN ({$oids_sql}) )", $otype );
	}

	// Bail if no where conditions.
	if ( empty( $where_conditions ) ) {
		return;
	}

	// Setup the WHERE query part.
	$where_sql = implode( " OR ", $where_conditions );

	// Attempt to query meta values.
	$meta_list = $wpdb->get_results( "SELECT object_id, object_type, meta_key, meta_value FROM {$bp->profile->table_name_meta} WHERE {$where_sql}" );

	// Bail if no results found.
	if ( empty( $meta_list ) || is_wp_error( $meta_list ) ) {
		return;
	}

	// Setup empty cache array.
	$cache = array();

	// Loop through metas.
	foreach ( $meta_list as $meta ) {
		$oid    = $meta->object_id;
		$otype  = $meta->object_type;
		$okey   = $meta->meta_key;
		$ovalue = $meta->meta_value;

		// Force subkeys to be array type.
		if ( ! isset( $cache[ $otype ][ $oid ] ) || ! is_array( $cache[ $otype ][ $oid ] ) ) {
			$cache[ $otype ][ $oid ] = array();
		}

		if ( ! isset( $cache[ $otype ][ $oid ][ $okey ] ) || ! is_array( $cache[ $otype ][ $oid ][ $okey ] ) ) {
			$cache[ $otype ][ $oid ][ $okey ] = array();
		}

		// Add to the cache array.
		$cache[ $otype ][ $oid ][ $okey ][] = maybe_unserialize( $ovalue );
	}

	// Loop through data and cache to the appropriate object.
	foreach ( $cache as $object_type => $object_caches ) {

		// Determine the cache group for this data.
		$cache_group = $cache_groups[ $object_type ];

		// Loop through objects and cache appropriately.
		foreach ( $object_caches as $object_id => $object_cache ) {
			wp_cache_set( $object_id, $object_cache, $cache_group );
		}
	}
}