public function __construct() {
		parent::__construct();

		$insert_status = tribe( Commerce\Status\Status_Handler::class )->get_insert_status();

		// Set the order post type.
		$this->default_args['post_type']   = Order::POSTTYPE;
		$this->default_args['post_status'] = $insert_status->get_wp_slug();
		$this->create_args['post_status']  = $insert_status->get_wp_slug();
		$this->create_args['post_type']    = Order::POSTTYPE;
		$this->create_args['currency']     = tribe_get_option( Commerce\Settings::$option_currency_code, 'USD' );

		// Add event specific aliases.
		$this->update_fields_aliases = array_merge(
			$this->update_fields_aliases,
			[
				'gateway'              => Order::$gateway_meta_key,
				'gateway_order_id'     => Order::$gateway_order_id_meta_key,
				'items'                => Order::$items_meta_key,
				'total_value'          => Order::$total_value_meta_key,
				'currency'             => Order::$currency_meta_key,
				'purchaser_user_id'    => Order::$purchaser_user_id_meta_key,
				'purchaser_full_name'  => Order::$purchaser_full_name_meta_key,
				'purchaser_first_name' => Order::$purchaser_first_name_meta_key,
				'purchaser_last_name'  => Order::$purchaser_last_name_meta_key,
				'purchaser_email'      => Order::$purchaser_email_meta_key,
				'hash'                 => Order::$hash_meta_key,
			]
		);

		$this->schema = array_merge(
			$this->schema,
			[
				'tickets'     => [ $this, 'filter_by_tickets' ],
				'tickets_not' => [ $this, 'filter_by_tickets_not' ],
				'events'      => [ $this, 'filter_by_events' ],
				'events_not'  => [ $this, 'filter_by_events_not' ],
			]
		);

		$this->add_simple_meta_schema_entry( 'gateway', Order::$gateway_meta_key, 'meta_equals' );
		$this->add_simple_meta_schema_entry( 'gateway_order_id', Order::$gateway_order_id_meta_key, 'meta_equals' );
		$this->add_simple_meta_schema_entry( 'currency', Order::$currency_meta_key, 'meta_equals' );
		$this->add_simple_meta_schema_entry( 'purchaser_full_name', Order::$purchaser_full_name_meta_key, 'meta_equals' );
		$this->add_simple_meta_schema_entry( 'purchaser_first_name', Order::$purchaser_first_name_meta_key, 'meta_equals' );
		$this->add_simple_meta_schema_entry( 'purchaser_last_name', Order::$purchaser_last_name_meta_key, 'meta_equals' );
		$this->add_simple_meta_schema_entry( 'purchaser_email', Order::$purchaser_email_meta_key, 'meta_equals' );
		$this->add_simple_meta_schema_entry( 'hash', Order::$hash_meta_key, 'meta_equals' );
	}