processing/src/main/java/org/apache/druid/query/aggregation/firstlast/first/StringFirstFoldingAggregatorFactory.java

/*
 * 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.aggregation.firstlast.first;

import com.fasterxml.jackson.annotation.JsonCreator;
import org.apache.druid.query.aggregation.AggregatorFactory;

/**
 * For backwards compatibility; equivalent to a regular StringFirstAggregatorFactory.
 */
public class StringFirstFoldingAggregatorFactory extends StringFirstAggregatorFactory
{
  @JsonCreator
  public StringFirstFoldingAggregatorFactory(String name, String fieldName, Integer maxStringBytes)
  {
    super(name, fieldName, null, maxStringBytes);
  }

  @Override
  public AggregatorFactory withName(String newName)
  {
    return new StringFirstFoldingAggregatorFactory(newName, getFieldName(), getMaxStringBytes());
  }
}