// Setup the prefixed name
		$this->prefixed_name = $this->apply_prefix( $this->name, $glue );

		// Maybe create database key
		if ( empty( $this->db_version_key ) ) {
			$this->db_version_key = implode(
				$glue,
				array(
					sanitize_key( $this->db_global ),
					$this->prefixed_name,
					'version'
				)
			);
		}
	}

	/**
	 * Set this table up in the database interface.
	 *
	 * This must be done directly because the database interface does not
	 * have a common mechanism for manipulating them safely.
	 *
	 * @since 1.0.0
	 */
	private function set_db_interface() {

		// Get the database once, to avoid duplicate function calls
		$db = $this->get_db();

		// Bail if no database
		if ( empty( $db ) ) {
			return;
		}

		// Set variables for global tables
		if ( $this->is_global() ) {
			$site_id = 0;
			$tables  = 'ms_global_tables';

		// Set variables for per-site tables
		} else {
			$site_id = null;
			$tables  = 'tables';
		}

		// Set the table prefix and prefix the table name
		$this->table_prefix  = $db->get_blog_prefix( $site_id );

		// Get the prefixed table name
		$prefixed_table_name = "{$this->table_prefix}{$this->prefixed_name}";

		// Set the database interface
		$db->{$this->prefixed_name} = $this->table_name = $prefixed_table_name;

		// Create the array if it does not exist
		if ( ! isset( $db->{$tables} ) ) {
			$db->{$tables} = array();
		}

		// Add the table to the global table array
		$db->{$tables}[] = $this->prefixed_name;

		// Charset
		if ( ! empty( $db->charset ) ) {
			$this->charset_collation = "DEFAULT CHARACTER SET {$db->charset}";
		}

		// Collation
		if ( ! empty( $db->collate ) ) {
			$this->charset_collation .= " COLLATE {$db->collate}";
		}
	}

	/**
	 * Set the database version for the table.
	 *
	 * @since 1.0.0
	 *
	 * @param mixed $version Database version to set when upgrading/creating
	 */
	private function set_db_version( $version = '' ) {

		// If no version is passed during an upgrade, use the current version
		if ( empty( $version ) ) {
			$version = $this->version;
		}

		// Update the DB version
		$this->is_global()
			? update_network_option( get_main_network_id(), $this->db_version_key, $version )
			:         update_option(                        $this->db_version_key, $version );

		// Set the DB version
		$this->db_version = $version;
	}

	/**
	 * Get the table version from the database.
	 *
	 * @since 1.0.0
	 */
	private function get_db_version() {
		$this->db_version = $this->is_global()
			? get_network_option( get_main_network_id(), $this->db_version_key, false )
			:         get_option(                        $this->db_version_key, false );
	}

	/**
	 * Delete the table version from the database.
	 *
	 * @since 1.0.0
	 */
	private function delete_db_version() {
		$this->db_version = $this->is_global()
			? delete_network_option( get_main_network_id(), $this->db_version_key )
			:         delete_option(                        $this->db_version_key );
	}

	/**
	 * Add class hooks to the parent application actions.
	 *
	 * @since 1.0.0
	 */
	private function add_hooks() {

		// Add table to the global database object
		add_action( 'switch_blog', array( $this, 'switch_blog'   ) );
		add_action( 'admin_init',  array( $this, 'maybe_upgrade' ) );
	}

	/**
	 * Check if the current request is from some kind of test.
	 *
	 * This is primarily used to skip 'admin_init' and force-install tables.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 */
	private function is_testing() {
		return (bool)

			// Tests constant is being used
			( defined( 'WP_TESTS_DIR' ) && WP_TESTS_DIR )

			||

			// Scaffolded (https://make.wordpress.org/cli/handbook/plugin-unit-tests/)
			function_exists( '_manually_load_plugin' );
	}

	/**
	 * Check if table is global.
	 *
	 * @since 1.0.0
	 *
	 * @return bool
	 */
	private function is_global() {
		return ( true === $this->global );
	}

	/**
	 * Try to get a callable upgrade, with some magic to avoid needing to
	 * do this dance repeatedly inside subclasses.
	 *
	 * @since 1.0.0
	 *
	 * @param string $callback
	 *
	 * @return mixed Callable string, or false if not callable
	 */
	private function get_callable( $callback = '' ) {

		// Default return value
		$callable = $callback;

		// Look for global function
		if ( ! is_callable( $callable ) ) {

			// Fallback to local class method
			$callable = array( $this, $callback );
			if ( ! is_callable( $callable ) ) {

				// Fallback to class method prefixed with "__"
				$callable = array( $this, "__{$callback}" );
				if ( ! is_callable( $callable ) ) {
					$callable = false;
				}
			}
		}

		// Return callable string, or false if not callable
		return $callable;
	}
}