Java tutorial
/******************************************************************************* * Copyright 2011 Pascal Metrics * * 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 org.opensafety.hishare.dao.implementation; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.Query; import org.hibernate.criterion.Restrictions; import org.opensafety.hishare.dao.interfaces.PermissionDao; import org.opensafety.hishare.model.Parcel; import org.opensafety.hishare.model.Permission; import org.opensafety.hishare.model.PermissionLevel; import org.opensafety.hishare.model.User; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional; @Repository @Transactional public class HibernatePermissionDao extends HibernateDaoSupport implements PermissionDao { private Log log = LogFactory.getLog(this.getClass()); public void addPermission(Permission permission) { getSession().save(permission); } public boolean deleteAllWithParcel(Parcel parcel) { String deleteQuery = "DELETE FROM Permission WHERE parcel = :parcel"; Query delete = getSession().createQuery(deleteQuery); delete.setEntity("parcel", parcel); int rowCount = delete.executeUpdate(); return rowCount > 0; } public boolean hasEither(User user, Parcel parcel, PermissionLevel[] permissions) { return getSession().createCriteria(Permission.class).add(Restrictions.in("permission", permissions)) .createAlias("user", "u").createAlias("parcel", "p").add(Restrictions.eq("u.id", user.getId())) .add(Restrictions.eq("p.id", parcel.getId())).setMaxResults(1).uniqueResult() != null; } public void updatePermission(Permission permission) { getSession().merge(permission); } }