| /** |
| * 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.definition; |
| |
| import com.tinkerpop.pipes.PipeFunction; |
| import com.tinkerpop.pipes.transform.TransformFunctionPipe; |
| import org.apache.atlas.catalog.DefaultPropertyMapper; |
| import org.apache.atlas.catalog.PropertyMapper; |
| import org.apache.atlas.catalog.ResourceComparator; |
| import org.apache.atlas.catalog.VertexWrapper; |
| import org.apache.atlas.catalog.projection.Projection; |
| import org.apache.atlas.catalog.projection.ProjectionResult; |
| import org.apache.atlas.repository.Constants; |
| import org.apache.atlas.typesystem.types.DataTypes; |
| import org.apache.atlas.typesystem.types.utils.TypesUtil; |
| |
| import java.util.*; |
| |
| /** |
| * Entity Tag resource definition. |
| */ |
| public class EntityTagResourceDefinition extends BaseResourceDefinition { |
| public static final String ENTITY_GUID_PROPERTY = "entity-guid"; |
| |
| public EntityTagResourceDefinition() { |
| registerProperty(TypesUtil.createRequiredAttrDef("name", DataTypes.STRING_TYPE)); |
| |
| instanceProperties.add("name"); |
| instanceProperties.add("description"); |
| instanceProperties.add("creation_time"); |
| |
| collectionProperties.add("name"); |
| collectionProperties.add("description"); |
| |
| projections.put("terms", getTermProjection()); |
| } |
| |
| @Override |
| public String getIdPropertyName() { |
| return "name"; |
| } |
| |
| //not meaningful for entity tags |
| @Override |
| public String getTypeName() { |
| return null; |
| } |
| |
| @Override |
| public String resolveHref(Map<String, Object> properties) { |
| return String.format("v1/entities/%s/tags/%s", properties.get(ENTITY_GUID_PROPERTY), properties.get("name")); |
| } |
| |
| private Projection getTermProjection() { |
| return new Projection("term", Projection.Cardinality.SINGLE, |
| new TransformFunctionPipe<>(new PipeFunction<VertexWrapper, Collection<ProjectionResult>>() { |
| @Override |
| public Collection<ProjectionResult> compute(VertexWrapper start) { |
| Map<String, Object> map = new TreeMap<>(new ResourceComparator()); |
| |
| StringBuilder sb = new StringBuilder(); |
| sb.append("v1/taxonomies/"); |
| |
| String fullyQualifiedName = start.getVertex().getProperty(Constants.ENTITY_TYPE_PROPERTY_KEY); |
| String[] paths = fullyQualifiedName.split("\\."); |
| // first path segment is the taxonomy |
| sb.append(paths[0]); |
| |
| for (int i = 1; i < paths.length; ++i) { |
| String path = paths[i]; |
| if (path != null && !path.isEmpty()) { |
| sb.append("/terms/"); |
| sb.append(path); |
| } |
| } |
| |
| map.put("href", sb.toString()); |
| return Collections.singleton(new ProjectionResult("term", start, |
| Collections.singleton(map))); |
| } |
| })); |
| } |
| |
| @Override |
| protected PropertyMapper createPropertyMapper() { |
| return new DefaultPropertyMapper(Collections.singletonMap(Constants.ENTITY_TYPE_PROPERTY_KEY, "name"), |
| Collections.singletonMap("name", Constants.ENTITY_TYPE_PROPERTY_KEY)); |
| } |
| } |