<?php
  
  /**
   * Calendar interface
   *
   * Implement this interface to allow a node to be recognized as an calendar.
   *
   * @package Sabre
   * @subpackage CalDAV
   * @copyright Copyright (C) 2007-2013 Rooftop Solutions. All rights reserved.
   * @author Evert Pot (http://www.rooftopsolutions.nl/)
   * @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
   */
  interface Sabre_CalDAV_ICalendar extends Sabre_DAV_ICollection {
  
      /**
       * Performs a calendar-query on the contents of this calendar.
       *
       * The calendar-query is defined in RFC4791 : CalDAV. Using the
       * calendar-query it is possible for a client to request a specific set of
       * object, based on contents of iCalendar properties, date-ranges and
       * iCalendar component types (VTODO, VEVENT).
       *
       * This method should just return a list of (relative) urls that match this
       * query.
       *
       * The list of filters are specified as an array. The exact array is
       * documented by Sabre_CalDAV_CalendarQueryParser.
       *
       * @param array $filters
       * @return array
       */
      public function calendarQuery(array $filters);
  
  }