Java tutorial
/* * Copyright 2002-2016 the original author or authors. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.devnexus.ting.repository.jpa; import java.util.List; import javax.persistence.EntityManager; import javax.persistence.PersistenceContext; import org.hibernate.Filter; import org.hibernate.Session; import org.springframework.security.authentication.AnonymousAuthenticationToken; import org.springframework.security.core.context.SecurityContextHolder; import org.springframework.stereotype.Repository; import com.devnexus.ting.model.ScheduleItem; import com.devnexus.ting.model.User; import com.devnexus.ting.repository.ScheduleItemRepositoryCustom; /** * * @author Gunnar Hillert * @since 1.0 * */ @Repository("scheduleItemDao") public class ScheduleItemRepositoryImpl implements ScheduleItemRepositoryCustom { @PersistenceContext private EntityManager entityManager; /** {@inheritDoc} */ @Override public List<ScheduleItem> getScheduleForEvent(Long eventId) { final Session session = (Session) this.entityManager.getDelegate(); Filter filter = session.enableFilter("userFilter"); if (!(SecurityContextHolder.getContext().getAuthentication() instanceof AnonymousAuthenticationToken)) { final User user = (User) SecurityContextHolder.getContext().getAuthentication().getPrincipal(); filter.setParameter("userId", user.getId()); } else { filter.setParameter("userId", -1L); } return this.entityManager .createQuery("select si from ScheduleItem si " + "where si.event.id = :eventId " + "order by si.fromTime ASC, si.room.roomOrder ASC", ScheduleItem.class) .setParameter("eventId", eventId).getResultList(); } }