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A module that is everything required to understands Druid Segments

There is a newer version: 0.12.3

/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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 io.druid.jackson;

import com.fasterxml.jackson.core.JsonFactory;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.MapperFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.fasterxml.jackson.databind.SerializationFeature;
import com.fasterxml.jackson.datatype.guava.GuavaModule;

/**
 */
public class DefaultObjectMapper extends ObjectMapper
{
  public DefaultObjectMapper()
  {
    this((JsonFactory)null);
  }

  public DefaultObjectMapper(DefaultObjectMapper mapper)
  {
    super(mapper);
  }

  public DefaultObjectMapper(JsonFactory factory)
  {
    super(factory);
    registerModule(new DruidDefaultSerializersModule());
    registerModule(new GuavaModule());
    registerModule(new QueryGranularityModule());
    registerModule(new AggregatorsModule());
    registerModule(new SegmentsModule());

    configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
    configure(MapperFeature.AUTO_DETECT_GETTERS, false);
//    configure(MapperFeature.AUTO_DETECT_CREATORS, false); https://github.com/FasterXML/jackson-databind/issues/170
    configure(MapperFeature.AUTO_DETECT_FIELDS, false);
    configure(MapperFeature.AUTO_DETECT_IS_GETTERS, false);
    configure(MapperFeature.AUTO_DETECT_SETTERS, false);
    configure(MapperFeature.ALLOW_FINAL_FIELDS_AS_MUTATORS, false);
    configure(SerializationFeature.INDENT_OUTPUT, false);
  }

  @Override
  public ObjectMapper copy()
  {
    return new DefaultObjectMapper(this);
  }
}