# CommunityUserDeletionListener.java

    /*
     * Copyright (C) 2000 - 2024 Silverpeas
     *
     * This program is free software: you can redistribute it and/or modify
     * it under the terms of the GNU Affero General Public License as
     * published by the Free Software Foundation, either version 3 of the
     * License, or (at your option) any later version.
     *
     * As a special exception to the terms and conditions of version 3.0 of
     * the GPL, you may redistribute this Program in connection with Free/Libre
     * Open Source Software ("FLOSS") applications as described in Silverpeas's
     * FLOSS exception.  You should have received a copy of the text describing
     * the FLOSS exception, and it is also available here:
     * "https://www.silverpeas.com/legal/licensing"
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU Affero General Public License for more details.
     *
     * You should have received a copy of the GNU Affero General Public License
     * along with this program.  If not, see <https://www.gnu.org/licenses/>.
     *
     */

    package org.silverpeas.components.community;

    import org.silverpeas.components.community.repository.CommunityOfUsersRepository;
    import org.silverpeas.core.admin.user.model.User;
    import org.silverpeas.core.admin.user.notification.UserEvent;
    import org.silverpeas.core.annotation.Bean;
    import org.silverpeas.core.notification.system.CDIResourceEventListener;

    import javax.inject.Inject;
    import javax.transaction.Transactional;

    /**
     * A listener of events concerning an operation applied on a user profile in Silverpeas. This
     * listener has for goal to listen events triggered by a user profile deletion in order to check
     * whether the user being deleted is a member of one or more community of users in Silverpeas. In
     * this case, it will remove him from those communities.
     * @author mmoquillon
     */
    @Bean
    public class CommunityUserDeletionListener extends CDIResourceEventListener<UserEvent> {

      @Inject
      private CommunityOfUsersRepository repository;

      @Override
      @Transactional
      public void onDeletion(final UserEvent event) {
        User user = event.getTransition().getBefore();
        repository.getAllByUserId(user.getId()).forEach(c -> c.removeMembership(user));
      }
    }