| /** |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 |
| * <p> |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * <p> |
| * 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.apache.atlas.repository.ogm; |
| |
| import org.apache.atlas.AtlasErrorCode; |
| import org.apache.atlas.exception.AtlasBaseException; |
| import org.apache.atlas.model.AtlasBaseModelObject; |
| import org.apache.atlas.model.instance.AtlasEntity.AtlasEntityWithExtInfo; |
| import org.apache.atlas.model.instance.EntityMutationResponse; |
| import org.apache.atlas.repository.store.graph.AtlasEntityStore; |
| import org.apache.atlas.repository.store.graph.v1.AtlasEntityStream; |
| import org.apache.commons.lang3.StringUtils; |
| import org.springframework.stereotype.Component; |
| |
| import javax.inject.Inject; |
| |
| |
| @Component |
| public class DataAccess { |
| private final AtlasEntityStore entityStore; |
| private final DTORegistry dtoRegistry; |
| |
| @Inject |
| public DataAccess(AtlasEntityStore entityStore, DTORegistry dtoRegistry) { |
| this.entityStore = entityStore; |
| this.dtoRegistry = dtoRegistry; |
| } |
| |
| public <T extends AtlasBaseModelObject> T save(T obj) throws AtlasBaseException { |
| DataTransferObject<T> dto = (DataTransferObject<T>)dtoRegistry.get(obj.getClass()); |
| |
| AtlasEntityWithExtInfo entityWithExtInfo = dto.toEntityWithExtInfo(obj); |
| EntityMutationResponse entityMutationResponse = entityStore.createOrUpdate(new AtlasEntityStream(entityWithExtInfo), false); |
| |
| if (hasError(entityMutationResponse)) { |
| throw new AtlasBaseException(AtlasErrorCode.DATA_ACCESS_SAVE_FAILED, obj.toString()); |
| } |
| |
| return this.load(obj); |
| } |
| |
| public <T extends AtlasBaseModelObject> T load(T obj) throws AtlasBaseException { |
| DataTransferObject<T> dto = (DataTransferObject<T>)dtoRegistry.get(obj.getClass()); |
| |
| AtlasEntityWithExtInfo entityWithExtInfo; |
| |
| if (StringUtils.isNotEmpty(obj.getGuid())) { |
| entityWithExtInfo = entityStore.getById(obj.getGuid()); |
| } else { |
| entityWithExtInfo = entityStore.getByUniqueAttributes(dto.getEntityType(), dto.getUniqueAttributes(obj)); |
| } |
| |
| return dto.from(entityWithExtInfo); |
| } |
| |
| public void deleteUsingGuid(String guid) throws AtlasBaseException { |
| entityStore.deleteById(guid); |
| } |
| |
| public <T extends AtlasBaseModelObject> void delete(T obj) throws AtlasBaseException { |
| T object = load(obj); |
| |
| if (object != null) { |
| deleteUsingGuid(object.getGuid()); |
| } |
| } |
| |
| private boolean hasError(EntityMutationResponse er) { |
| return (er == null || |
| !((er.getCreatedEntities() != null && er.getCreatedEntities().size() > 0) |
| || (er.getUpdatedEntities() != null && er.getUpdatedEntities().size() > 0) |
| ) |
| ); |
| } |
| } |