New XSJS Service to create iCal file for selected Event

[seVladimirs]

Linked to sapmentors/SITregParticipant#20

By calling this service you will get iCal file downloaded on your laptop. Important to pass event id.
Example GET Request: odataparticipant/ExportCalendar.xsjs?ID=1

This file is following iCalendar RFC 5545 format - https://icalendar.org/RFC-Specifications/iCalendar-RFC-5545/

Missing:

• Organiser ID (email), this would allow informing organiser in case you cancel participation via Calendar/Outlook

[gregorwolf]

Hi Vladimirs,

thank for this great contribution.

Would be great if you can add a test in https://github.com/sapmentors/SITreg/tree/master/test. Please create a new test 040_Participant.xsjslib following the example of 040_CoOrganizerTest.xsjslib. You can call /sap/hana/testtools/unit/jasminexs/TestRunner.xsjs?format=json&package=com.sap.sapmentors.sitreg.test to execute all the tests. When there are green on your local system please add this to this pull request and I will be happy to merge. By merging an automatic build on https://ci.computerservice-wolf.com/ will be triggered.

CU
Gregor

[gregorwolf]

Please note that I had to patch /sap/hana/testtools/unit/jasminexs/lib/http.xsjslib with the following:

	var response =  client.getResponse();
	// close the connection
	client.close();	
	return response;

to avoid running out of connections.