Java tutorial
/** * Copyright 2016-2018 The Thingsboard 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 org.thingsboard.server.dao.sql.alarm; import com.google.common.util.concurrent.Futures; import com.google.common.util.concurrent.ListenableFuture; import lombok.extern.slf4j.Slf4j; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.data.domain.PageRequest; import org.springframework.data.repository.CrudRepository; import org.springframework.stereotype.Component; import org.thingsboard.server.common.data.EntityType; import org.thingsboard.server.common.data.UUIDConverter; import org.thingsboard.server.common.data.alarm.Alarm; import org.thingsboard.server.common.data.alarm.AlarmInfo; import org.thingsboard.server.common.data.alarm.AlarmQuery; import org.thingsboard.server.common.data.alarm.AlarmSearchStatus; import org.thingsboard.server.common.data.id.EntityId; import org.thingsboard.server.common.data.id.TenantId; import org.thingsboard.server.common.data.relation.EntityRelation; import org.thingsboard.server.common.data.relation.RelationTypeGroup; import org.thingsboard.server.dao.DaoUtil; import org.thingsboard.server.dao.alarm.AlarmDao; import org.thingsboard.server.dao.alarm.BaseAlarmService; import org.thingsboard.server.dao.model.sql.AlarmEntity; import org.thingsboard.server.dao.relation.RelationDao; import org.thingsboard.server.dao.sql.JpaAbstractDao; import org.thingsboard.server.dao.util.SqlDao; import java.util.ArrayList; import java.util.List; import java.util.UUID; /** * Created by Valerii Sosliuk on 5/19/2017. */ @Slf4j @Component @SqlDao public class JpaAlarmDao extends JpaAbstractDao<AlarmEntity, Alarm> implements AlarmDao { @Autowired private AlarmRepository alarmRepository; @Autowired private RelationDao relationDao; @Override protected Class<AlarmEntity> getEntityClass() { return AlarmEntity.class; } @Override protected CrudRepository<AlarmEntity, String> getCrudRepository() { return alarmRepository; } @Override public ListenableFuture<Alarm> findLatestByOriginatorAndType(TenantId tenantId, EntityId originator, String type) { return service.submit(() -> { List<AlarmEntity> latest = alarmRepository.findLatestByOriginatorAndType( UUIDConverter.fromTimeUUID(tenantId.getId()), UUIDConverter.fromTimeUUID(originator.getId()), originator.getEntityType(), type, new PageRequest(0, 1)); return latest.isEmpty() ? null : DaoUtil.getData(latest.get(0)); }); } @Override public ListenableFuture<Alarm> findAlarmByIdAsync(TenantId tenantId, UUID key) { return findByIdAsync(tenantId, key); } @Override public ListenableFuture<List<AlarmInfo>> findAlarms(TenantId tenantId, AlarmQuery query) { log.trace("Try to find alarms by entity [{}], status [{}] and pageLink [{}]", query.getAffectedEntityId(), query.getStatus(), query.getPageLink()); EntityId affectedEntity = query.getAffectedEntityId(); String searchStatusName; if (query.getSearchStatus() == null && query.getStatus() == null) { searchStatusName = AlarmSearchStatus.ANY.name(); } else if (query.getSearchStatus() != null) { searchStatusName = query.getSearchStatus().name(); } else { searchStatusName = query.getStatus().name(); } String relationType = BaseAlarmService.ALARM_RELATION_PREFIX + searchStatusName; ListenableFuture<List<EntityRelation>> relations = relationDao.findRelations(tenantId, affectedEntity, relationType, RelationTypeGroup.ALARM, EntityType.ALARM, query.getPageLink()); return Futures.transformAsync(relations, input -> { List<ListenableFuture<AlarmInfo>> alarmFutures = new ArrayList<>(input.size()); for (EntityRelation relation : input) { alarmFutures.add( Futures.transform(findAlarmByIdAsync(tenantId, relation.getTo().getId()), AlarmInfo::new)); } return Futures.successfulAsList(alarmFutures); }); } }