content: /*
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance
   * with the License.  You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package org.apache.bookkeeper.common.util;
  
  import com.fasterxml.jackson.databind.ObjectMapper;
  
  /**
   * Util class which helps to parse Json to and from Object.
   */
  public class JsonUtil {
  
      private static ObjectMapper mapper = new ObjectMapper();
  
      public static String toJson(Object object) throws ParseJsonException {
          try {
              return mapper.writerWithDefaultPrettyPrinter().writeValueAsString(object);
          } catch (Exception e) {
              throw new ParseJsonException("Failed to serialize Object to Json string", e);
          }
      }
  
      public static <T> T fromJson(String jsonStr, Class<T> valueType) throws ParseJsonException {
          try {
              return mapper.readValue(jsonStr, valueType);
          }  catch (Exception e) {
              throw new ParseJsonException("Failed to deserialize Object from Json string", e);
          }
      }
  
      /**
       * A JSON parsing exception.
       */
      public static class ParseJsonException extends Exception {
          public ParseJsonException(String message) {
              super(message);
          }
  
          public ParseJsonException(String message, Throwable cause) {
              super(message, cause);
          }
      }
  }
  