Java tutorial
/* * Copyright 2019 ThoughtWorks, Inc. * * 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.thoughtworks.go.server.persistence; import com.thoughtworks.go.server.domain.BackupStatus; import com.thoughtworks.go.server.domain.ServerBackup; import org.apache.commons.lang3.StringUtils; import org.hibernate.Criteria; import org.hibernate.Query; import org.hibernate.SessionFactory; import org.hibernate.criterion.Order; import org.hibernate.criterion.Restrictions; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.orm.hibernate3.HibernateCallback; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import org.springframework.stereotype.Service; import java.util.List; import java.util.Optional; @Service public class ServerBackupRepository extends HibernateDaoSupport { @Autowired public ServerBackupRepository(SessionFactory sessionFactory) { setSessionFactory(sessionFactory); } public Optional<ServerBackup> lastSuccessfulBackup() { List results = (List) getHibernateTemplate().execute((HibernateCallback) session -> { Criteria criteria = session.createCriteria(ServerBackup.class); criteria.add(Restrictions.eq("status", BackupStatus.COMPLETED)); criteria.setMaxResults(1); criteria.addOrder(Order.desc("id")); return criteria.list(); }); return results.isEmpty() ? Optional.empty() : Optional.of((ServerBackup) results.get(0)); } public ServerBackup save(ServerBackup serverBackup) { getHibernateTemplate().save(serverBackup); return serverBackup; } public void deleteAll() { getHibernateTemplate().execute((HibernateCallback) session -> session .createQuery(String.format("DELETE FROM %s", ServerBackup.class.getName())).executeUpdate()); } public void markInProgressBackupsAsAborted(String message) { getHibernateTemplate().execute((HibernateCallback) session -> { Query query = session.createQuery(String.format( "UPDATE %s set status = :abortedStatus, message = :abortedMessage WHERE status = :inProgressStatus", ServerBackup.class.getName())); query.setParameter("abortedStatus", BackupStatus.ABORTED); query.setParameter("abortedMessage", message); query.setParameter("inProgressStatus", BackupStatus.IN_PROGRESS); return query.executeUpdate(); }); } public Optional<ServerBackup> getBackup(String id) { if (StringUtils.isEmpty(id)) { return Optional.empty(); } return getBackup(Long.parseLong(id)); } public Optional<ServerBackup> getBackup(long id) { return Optional.ofNullable(getHibernateTemplate().get(ServerBackup.class, id)); } public void update(ServerBackup serverBackup) { getHibernateTemplate().update(serverBackup); } }