001/*
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements.  See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership.  The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with the License.  You may obtain a copy of the License at
009 *
010 *     http://www.apache.org/licenses/LICENSE-2.0
011 *
012 * Unless required by applicable law or agreed to in writing, software
013 * distributed under the License is distributed on an "AS IS" BASIS,
014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015 * See the License for the specific language governing permissions and
016 * limitations under the License.
017 */
018package org.apache.hadoop.hbase.util;
019
020import java.io.IOException;
021import java.util.Map;
022import org.apache.yetus.audience.InterfaceAudience;
023
024import org.apache.hbase.thirdparty.com.google.gson.Gson;
025
026/**
027 * Utility class for converting objects to JSON
028 */
029@InterfaceAudience.Public
030public final class JsonMapper {
031  private JsonMapper() {
032  }
033
034  private static final Gson GSON = GsonUtil.createGson().create();
035
036  public static String writeMapAsString(Map<String, Object> map) throws IOException {
037    return writeObjectAsString(map);
038  }
039
040  public static String writeObjectAsString(Object object) throws IOException {
041    return GSON.toJson(object);
042  }
043
044  public static <T> T fromJson(String json, Class<T> clazz) {
045    return GSON.fromJson(json, clazz);
046  }
047}