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A module that is everything required to understands Druid Segments

There is a newer version: 31.0.0

/*
 * 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.druid.query.context;

import org.apache.druid.guice.annotations.PublicApi;

import java.util.HashMap;
import java.util.Map;

/**
 * The implementation of {@link ResponseContext} with a HashMap as a delegate
 */
@PublicApi
public class DefaultResponseContext extends ResponseContext
{
  public static DefaultResponseContext createEmpty()
  {
    return new DefaultResponseContext();
  }

  private final HashMap delegate = new HashMap<>();

  @Override
  protected Map getDelegate()
  {
    return delegate;
  }
}