2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017-2018 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Copyright (C) 2017 Amdocs
8 * =============================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
21 * ============LICENSE_END=========================================================
24 package org.onap.appc.dg.common.utils;
26 import com.fasterxml.jackson.databind.JsonNode;
27 import com.fasterxml.jackson.databind.ObjectMapper;
29 import java.io.IOException;
30 import java.io.Reader;
31 import java.io.UncheckedIOException;
35 public class JSONUtil {
37 private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper();
41 public static <T> T fromJson(String json, Class<T> clazz) {
44 return OBJECT_MAPPER.readValue(json, clazz);
45 } catch (IOException e) {
46 throw new UncheckedIOException(e);
50 public static <T> T fromJson(Reader reader, Class<T> clazz) {
53 return OBJECT_MAPPER.readValue(reader, clazz);
54 } catch (IOException e) {
55 throw new UncheckedIOException(e);
59 public static String toJson(Object object) {
62 return OBJECT_MAPPER.writeValueAsString(object);
63 } catch (IOException e) {
64 throw new UncheckedIOException(e);
68 public static Map<String, String> extractPlainValues(String json, String... names) {
70 return Collections.emptyMap();
72 Map<String, String> values = new HashMap<>();
74 final JsonNode jsonNode = OBJECT_MAPPER.readTree(json);
75 for (String name : names) {
76 values.put(name, jsonNode.path(name).asText());
78 } catch (IOException e) {
79 throw new UncheckedIOException(e);