2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright © 2017-2018 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.onap.aai.serialization.queryformats;
23 import com.google.gson.JsonObject;
25 import java.util.List;
26 import java.util.Optional;
27 import java.util.stream.Collectors;
29 import org.apache.tinkerpop.gremlin.process.traversal.Path;
30 import org.apache.tinkerpop.gremlin.process.traversal.step.util.Tree;
31 import org.apache.tinkerpop.gremlin.structure.Vertex;
32 import org.javatuples.Pair;
33 import org.onap.aai.db.props.AAIProperties;
34 import org.onap.aai.serialization.queryformats.exceptions.AAIFormatQueryResultFormatNotSupported;
35 import org.onap.aai.serialization.queryformats.exceptions.AAIFormatVertexException;
37 public class Count implements FormatMapper {
40 public Optional<JsonObject> formatObject(Object o)
41 throws AAIFormatVertexException, AAIFormatQueryResultFormatNotSupported {
42 @SuppressWarnings("unchecked")
43 List<Object> list = (List<Object>) o;
45 final JsonObject countResult = new JsonObject();
47 list.stream().map(this::getCount).filter(Optional::isPresent).map(Optional::get)
48 .collect(Collectors.toConcurrentMap(Pair::getValue0, Pair::getValue1, Long::sum))
49 .forEach((k, v) -> countResult.addProperty(k, v));
51 return Optional.of(countResult);
55 public int parallelThreshold() {
59 private Optional<Pair<String, Long>> getCount(Object o) {
61 Pair<String, Long> pair = null;
63 if (o instanceof Vertex) {
64 Vertex v = (Vertex) o;
65 pair = Pair.with(v.property(AAIProperties.NODE_TYPE).value().toString(), 1L);
66 } else if (o instanceof Tree) {
67 pair = Pair.with("trees", 1L);
68 } else if (o instanceof Path) {
69 pair = Pair.with("paths", 1L);
70 } else if (o instanceof Long) {
71 pair = Pair.with("count", (Long) o);
75 return Optional.<Pair<String, Long>>empty();
78 return Optional.<Pair<String, Long>>of(pair);