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<?php
/**
 * An object representing a master or replica DB position in a replicated setup.
 *
 * The implementation details of this opaque type are up to the database subclass.
 */
interface DBMasterPos {
	/**
	 * @return float UNIX timestamp
	 * @since 1.25
	 */
	public function asOfTime();

	/**
	 * @param DBMasterPos $pos
	 * @return bool Whether this position is at or higher than $pos
	 * @since 1.27
	 */
	public function hasReached( DBMasterPos $pos );

	/**
	 * @param DBMasterPos $pos
	 * @return bool Whether this position appears to be for the same channel as another
	 * @since 1.27
	 */
	public function channelsMatch( DBMasterPos $pos );

	/**
	 * @return string
	 * @since 1.27
	 */
	public function __toString();
}