| /** |
| * 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.query; |
| |
| import com.tinkerpop.blueprints.Direction; |
| import com.tinkerpop.blueprints.Edge; |
| import com.tinkerpop.gremlin.java.GremlinPipeline; |
| import com.tinkerpop.pipes.Pipe; |
| import com.tinkerpop.pipes.PipeFunction; |
| import com.tinkerpop.pipes.filter.FilterFunctionPipe; |
| import org.apache.atlas.catalog.Request; |
| import org.apache.atlas.catalog.TermVertexWrapper; |
| import org.apache.atlas.catalog.VertexWrapper; |
| import org.apache.atlas.catalog.definition.EntityTagResourceDefinition; |
| import org.apache.atlas.catalog.definition.ResourceDefinition; |
| import org.apache.atlas.repository.Constants; |
| |
| import java.util.HashMap; |
| import java.util.Map; |
| |
| /** |
| * Entity Tag resource query. |
| */ |
| public class AtlasEntityTagQuery extends BaseQuery { |
| private final String guid; |
| |
| public AtlasEntityTagQuery(QueryExpression queryExpression, ResourceDefinition resourceDefinition, String guid, Request request) { |
| super(queryExpression, resourceDefinition, request); |
| this.guid = guid; |
| } |
| |
| @Override |
| protected Pipe getQueryPipe() { |
| GremlinPipeline p; |
| if (guid.equals("*")) { |
| p = new GremlinPipeline().has(Constants.ENTITY_TEXT_PROPERTY_KEY). |
| hasNot(Constants.ENTITY_TYPE_PROPERTY_KEY, "Taxonomy").outE(); |
| } else { |
| p = new GremlinPipeline().has(Constants.GUID_PROPERTY_KEY, guid).outE(); |
| } |
| //todo: this is basically the same pipeline used in TagRelation.asPipe() |
| p.add(new FilterFunctionPipe<>(new PipeFunction<Edge, Boolean>() { |
| @Override |
| public Boolean compute(Edge edge) { |
| String type = edge.getVertex(Direction.OUT).getProperty(Constants.ENTITY_TYPE_PROPERTY_KEY); |
| VertexWrapper v = new TermVertexWrapper(edge.getVertex(Direction.IN)); |
| return edge.getLabel().startsWith(type) && v.getPropertyKeys().contains("available_as_tag"); |
| } |
| })); |
| |
| return p.inV(); |
| } |
| |
| //todo: duplication of effort with resource definition |
| @Override |
| protected void addHref(VertexWrapper vWrapper, Map<String, Object> filteredPropertyMap) { |
| Map<String, Object> map = new HashMap<>(filteredPropertyMap); |
| if (guid.equals("*")) { |
| map.put(EntityTagResourceDefinition.ENTITY_GUID_PROPERTY, vWrapper.getVertex().getEdges(Direction.IN). |
| iterator().next().getVertex(Direction.OUT).getProperty(Constants.GUID_PROPERTY_KEY)); |
| } else { |
| map.put(EntityTagResourceDefinition.ENTITY_GUID_PROPERTY, guid); |
| } |
| |
| String href = resourceDefinition.resolveHref(map); |
| if (href != null) { |
| filteredPropertyMap.put("href", href); |
| } |
| } |
| } |