public function getAllEvents($starttime = null, $endtime = null) {

		if (is_null($starttime)) {
			$starttime = time();
		}
		if (is_null($endtime)) {
			$endtime = strtotime('+1 year', $starttime);
		}

		$starttime = sanitize_int($starttime);
		$endtime = sanitize_int($endtime);
		$relationship_name = sanitize_string(self::EVENT_CALENDAR_RELATIONSHIP);

		$dbprefix = elgg_get_config('dbprefix');

		$mds_name = elgg_get_metastring_id('start_timestamp');
		$mdre_name = elgg_get_metastring_id('repeat_end_timestamp');

		$options = array(
			'type' => 'object',
			'subtype' => Event::SUBTYPE,
			'joins' => array(
				"JOIN {$dbprefix}entity_relationships er ON er.guid_one = e.guid", // calendar relationship
				"JOIN {$dbprefix}metadata mds ON mds.entity_guid = e.guid", // start time metadata
				"JOIN {$dbprefix}metastrings mss ON mss.id = mds.value_id", // start time metastring
				"JOIN {$dbprefix}metadata mdre ON mdre.entity_guid = e.guid", // repeat end time metadata
				"JOIN {$dbprefix}metastrings msre ON msre.id = mdre.value_id" // repeat end time metastring
			),
			'wheres' => array(
				"er.guid_two = {$this->guid} AND er.relationship = '{$relationship_name}'",
				"mds.name_id = {$mds_name}",
				"mdre.name_id = {$mdre_name}",
				// event start is before our endtime AND (repeat end is after starttime, or there is no repeat end)
				"((CAST(mss.string AS SIGNED) < {$endtime}) AND (CAST(msre.string AS SIGNED) > {$starttime} OR CAST(msre.string AS SIGNED) = 0))"
			),
			'limit' => false
		);

		return new ElggBatch('elgg_get_entities', $options);
	}