| /** |
| * 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.catalog; |
| |
| import org.apache.atlas.catalog.definition.EntityResourceDefinition; |
| import org.apache.atlas.catalog.exception.*; |
| import org.apache.atlas.catalog.query.AtlasQuery; |
| |
| import java.util.*; |
| |
| /** |
| * Provider for entity resources. |
| */ |
| public class EntityResourceProvider extends BaseResourceProvider implements ResourceProvider { |
| |
| public EntityResourceProvider(AtlasTypeSystem typeSystem) { |
| super(typeSystem, new EntityResourceDefinition()); |
| } |
| |
| @Override |
| public Result getResourceById(Request request) throws ResourceNotFoundException { |
| AtlasQuery atlasQuery; |
| try { |
| atlasQuery = queryFactory.createEntityQuery(request); |
| } catch (InvalidQueryException e) { |
| throw new CatalogRuntimeException("Unable to compile internal Entity query: " + e, e); |
| } |
| Collection<Map<String, Object>> results = atlasQuery.execute(); |
| if (results.isEmpty()) { |
| throw new ResourceNotFoundException(String.format("Entity '%s' not found.", |
| request.getProperty(resourceDefinition.getIdPropertyName()))); |
| } |
| return new Result(results); |
| } |
| |
| @Override |
| public Result getResources(Request request) throws InvalidQueryException, ResourceNotFoundException { |
| AtlasQuery atlasQuery = queryFactory.createEntityQuery(request); |
| return new Result(atlasQuery.execute()); |
| } |
| |
| @Override |
| public void createResource(Request request) |
| throws InvalidPayloadException, ResourceAlreadyExistsException, ResourceNotFoundException { |
| |
| // creation of entities is currently unsupported |
| throw new UnsupportedOperationException("Creation of entities is not currently supported"); |
| } |
| |
| @Override |
| public Collection<String> createResources(Request request) throws InvalidQueryException, ResourceNotFoundException { |
| throw new UnsupportedOperationException("Creation of entities is not currently supported"); |
| } |
| } |