How to programmatically get the list of calendar event invitees

Legacy Knowledge Base

Published Jul. 2, 2025

How to programmatically get the list of calendar event invitees

Written By

Sorin Pop

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Issue

I want to get the list of users that accepted an invitation to an event (but programmatically, not by viewing the event on the UI)

Environment

DXP 7.2

Resolution

- in the background, calendar events are called calendar bookings (so look for classes like CalendarBooking*, CalendarResource*. Java APIs might be also helpful)
- when a user invites other user to an event, for every invitation a new calendarbooking is created in the background
- and the invited users are handled as calendar resources
- here is a code snippet responsible for fetching invitees

https://github.com/liferay/liferay-portal/blob/master/modules/apps/calendar/calendar-web/src/main/java/com/liferay/calendar/web/internal/portlet/CalendarPortlet.java#L1286

- we can see here that the getChildCalendarBookings() reutrn the booking belonging to the invitations,
- and the getCalendarResources() method returns the invited users