2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Licensed under the Apache License, Version 2.0 (the "License");
8 * you may not use this file except in compliance with the License.
9 * You may obtain a copy of the License at
11 * http://www.apache.org/licenses/LICENSE-2.0
13 * Unless required by applicable law or agreed to in writing, software
14 * distributed under the License is distributed on an "AS IS" BASIS,
15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16 * See the License for the specific language governing permissions and
17 * limitations under the License.
18 * ============LICENSE_END=========================================================
21 package org.openecomp.aai.serialization.queryformats;
23 import com.google.gson.JsonObject;
24 import com.google.gson.JsonParser;
25 import com.thinkaurelius.titan.graphdb.tinkerpop.TitanIoRegistry;
26 import org.apache.tinkerpop.gremlin.structure.Direction;
27 import org.apache.tinkerpop.gremlin.structure.Vertex;
28 import org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONMapper;
29 import org.apache.tinkerpop.gremlin.structure.io.graphson.GraphSONWriter;
31 import java.io.ByteArrayOutputStream;
32 import java.io.IOException;
33 import java.io.OutputStream;
35 public class GraphSON implements FormatMapper {
37 private final GraphSONMapper mapper = GraphSONMapper.build().addRegistry(TitanIoRegistry.INSTANCE).create();
38 private final GraphSONWriter writer = GraphSONWriter.build().mapper(mapper).create();
39 protected JsonParser parser = new JsonParser();
42 public JsonObject formatObject(Object v) {
43 OutputStream os = new ByteArrayOutputStream();
46 writer.writeVertex(os, (Vertex)v, Direction.BOTH);
48 result = os.toString();
49 } catch (IOException e) {
50 // TODO Auto-generated catch block
54 return parser.parse(result).getAsJsonObject();
59 public int parallelThreshold() {