2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 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=========================================================
20 * ECOMP is a trademark and service mark of AT&T Intellectual Property.
22 package org.onap.aai.serialization.queryformats;
24 import com.att.eelf.configuration.EELFLogger;
25 import com.att.eelf.configuration.EELFManager;
26 import com.google.gson.JsonArray;
27 import com.google.gson.JsonObject;
28 import com.google.gson.JsonParser;
29 import org.onap.aai.serialization.queryformats.exceptions.AAIFormatVertexException;
31 import java.util.List;
32 import java.util.Optional;
33 import java.util.stream.Stream;
35 public class Formatter {
37 private static final EELFLogger LOGGER = EELFManager.getInstance().getLogger(Formatter.class);
39 protected JsonParser parser = new JsonParser();
40 protected final FormatMapper format;
41 public Formatter (FormatMapper format) {
45 public JsonObject output(List<Object> vertices) {
46 Stream<Object> stream = null;
47 JsonObject result = new JsonObject();
48 JsonArray body = new JsonArray();
49 if (vertices.size() >= format.parallelThreshold()) {
50 stream = vertices.parallelStream();
52 stream = vertices.stream();
54 final boolean isParallel = stream.isParallel();
57 return Optional.<JsonObject>of(format.formatObject(v));
58 } catch (AAIFormatVertexException e) {
59 LOGGER.warn("Failed to format vertex, returning a partial list", e);
62 return Optional.<JsonObject>empty();
64 if (obj.isPresent()) {
75 result.add("results", body);
77 return result.getAsJsonObject();