| /** |
| * 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.EntityTagResourceDefinition; |
| import org.apache.atlas.catalog.exception.*; |
| import org.apache.atlas.catalog.query.AtlasQuery; |
| |
| import java.util.*; |
| |
| /** |
| * Provider for entity tag resources. |
| */ |
| public class EntityTagResourceProvider extends BaseResourceProvider implements ResourceProvider { |
| private TermResourceProvider termResourceProvider; |
| |
| public EntityTagResourceProvider(AtlasTypeSystem typeSystem) { |
| super(typeSystem, new EntityTagResourceDefinition()); |
| } |
| |
| @Override |
| public Result getResourceById(Request request) throws ResourceNotFoundException { |
| AtlasQuery atlasQuery; |
| try { |
| atlasQuery = queryFactory.createEntityTagQuery(request); |
| } catch (InvalidQueryException e) { |
| throw new CatalogRuntimeException("Unable to compile internal Entity Tag query: " + e, e); |
| } |
| Collection<Map<String, Object>> results = atlasQuery.execute(); |
| if (results.isEmpty()) { |
| throw new ResourceNotFoundException(String.format("Tag '%s' not found.", |
| request.getProperty(resourceDefinition.getIdPropertyName()))); |
| } |
| |
| return new Result(results); |
| } |
| |
| @Override |
| public Result getResources(Request request) throws InvalidQueryException, ResourceNotFoundException { |
| AtlasQuery atlasQuery = queryFactory.createEntityTagQuery(request); |
| return new Result(atlasQuery.execute()); |
| } |
| |
| @Override |
| public void createResource(Request request) |
| throws InvalidPayloadException, ResourceAlreadyExistsException, ResourceNotFoundException { |
| |
| String entityId = String.valueOf(request.getQueryProperties().remove("id")); |
| resourceDefinition.validateCreatePayload(request); |
| Result termResult = getTermQueryResult(request.<String>getProperty("name")); |
| Map<String, Object> termProperties = termResult.getPropertyMaps().iterator().next(); |
| //todo: use constant for property name |
| if (String.valueOf(termProperties.get("available_as_tag")).equals("false")) { |
| throw new InvalidPayloadException( |
| "Attempted to tag an entity with a term which is not available to be tagged"); |
| } |
| tagEntities(Collections.singleton(entityId), termProperties); |
| } |
| |
| //todo: response for case mixed case where some subset of creations fail |
| @Override |
| public Collection<String> createResources(Request request) |
| throws InvalidQueryException, ResourceNotFoundException, ResourceAlreadyExistsException { |
| |
| Collection<String> relativeUrls = new ArrayList<>(); |
| AtlasQuery atlasQuery = queryFactory.createEntityQuery(request); |
| Collection<String> guids = new ArrayList<>(); |
| for (Map<String, Object> entityMap: atlasQuery.execute()) { |
| guids.add(String.valueOf(entityMap.get("id"))); |
| } |
| |
| Collection<Map<String, String>> tagMaps = request.getProperty("tags"); |
| for (Map<String, String> tagMap : tagMaps) { |
| Result termResult = getTermQueryResult(tagMap.get("name")); |
| relativeUrls.addAll(tagEntities(guids, termResult.getPropertyMaps().iterator().next())); |
| } |
| return relativeUrls; |
| } |
| |
| @Override |
| public void deleteResourceById(Request request) throws ResourceNotFoundException, InvalidPayloadException { |
| typeSystem.deleteTag(request.<String>getProperty("id"), request.<String>getProperty("name")); |
| } |
| |
| private Result getTermQueryResult(String termName) throws ResourceNotFoundException { |
| Request tagRequest = new InstanceRequest( |
| Collections.<String, Object>singletonMap("termPath", new TermPath(termName))); |
| |
| tagRequest.addAdditionalSelectProperties(Collections.singleton("type")); |
| return getTermResourceProvider().getResourceById(tagRequest); |
| } |
| |
| private Collection<String> tagEntities(Collection<String> entityGuids, Map<String, Object> termProperties) |
| throws ResourceAlreadyExistsException { |
| |
| Collection<String> relativeUrls = new ArrayList<>(); |
| for (String guid : entityGuids) { |
| //createTermEdge(entity, Collections.singleton(termVertex)); |
| // copy term properties from trait associated with taxonomy to be set |
| // on trait associated with new entity (basically clone at time of tag event) |
| //todo: any changes to 'singleton' trait won't be reflected in new trait |
| //todo: iterate over properties in term definition instead of hard coding here |
| Map<String, Object> properties = new HashMap<>(); |
| String termName = String.valueOf(termProperties.get("name")); |
| properties.put("name", termName); |
| properties.put("description", termProperties.get("description")); |
| |
| typeSystem.createTraitInstance(guid, termName, properties); |
| //todo: *** shouldn't know anything about href structure in this class *** |
| relativeUrls.add(String.format("v1/entities/%s/tags/%s", guid, termName)); |
| } |
| return relativeUrls; |
| } |
| |
| protected synchronized ResourceProvider getTermResourceProvider() { |
| if (termResourceProvider == null) { |
| termResourceProvider = new TermResourceProvider(typeSystem); |
| } |
| return termResourceProvider; |
| } |
| } |