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=========================================================
20 package org.openecomp.mso.adapters.json;
22 import org.codehaus.jackson.JsonGenerator;
23 import org.codehaus.jackson.map.JsonSerializer;
24 import org.codehaus.jackson.map.SerializerProvider;
26 import java.io.IOException;
30 * Custom JSON Serializer for Map<String, String>.
31 * In MSO with Jackson 1.9.12 and RestEasy 3.0.8, maps in JSON are serialized as
36 * {"key": "P1", "value": "V1"},
37 * {"key": "P2", "value": "V2"},
39 * {"key": "PN", "value": "VN"}
43 * The implementation uses a TreeMap, so entries are always sorted according
44 * to the natural ordering of the keys.
46 public class MapSerializer extends JsonSerializer<Map<String, String>> {
48 public void serialize(Map<String, String> map, JsonGenerator jsonGenerator,
49 SerializerProvider serializerProvider) throws IOException {
50 jsonGenerator.writeStartObject();
51 jsonGenerator.writeArrayFieldStart("entry");
52 for (Map.Entry<String,String> entry : map.entrySet()) {
53 String key = entry.getKey();
54 String value = entry.getValue();
55 jsonGenerator.writeStartObject();
56 jsonGenerator.writeStringField("key", key);
57 jsonGenerator.writeStringField("value", value);
58 jsonGenerator.writeEndObject();
60 jsonGenerator.writeEndArray();
61 jsonGenerator.writeEndObject();