xquery version "1.0";



import module namespace functx = "http://www.functx.com" at "functx.xqm";

import module namespace utils = "http://www.ishafoundation.org/ts4isha/xquery/utils" at "utils.xqm";



let $eventId := request:get-parameter('eventId', ())

let $sessionMetadataElements :=

	if (not(exists($eventId))) then

		$utils:dataCollection/session/metadata

	else

		$utils:dataCollection/session[@eventId = $eventId]/metadata

return

	<result>{

		for $sessionMetadataElement in $sessionMetadataElements

		let $sessionId := $sessionMetadataElement/parent::*/@id

		let $resultItem := functx:add-attributes($sessionMetadataElement, xs:QName('_sessionId'), $sessionId)

		order by exists($resultItem/@startAt), $resultItem/@startAt, $sessionId

		return

			$resultItem

	}</result>