io.druid.query.aggregation.histogram.ApproximateHistogramDruidModule Maven / Gradle / Ivy

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/*
 * Druid - a distributed column store.
 * Copyright 2012 - 2015 Metamarkets Group Inc.
 *
 * Licensed 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.query.aggregation.histogram;

import com.fasterxml.jackson.databind.Module;
import com.fasterxml.jackson.databind.module.SimpleModule;
import com.google.common.collect.ImmutableList;
import com.google.inject.Binder;
import io.druid.initialization.DruidModule;
import io.druid.segment.serde.ComplexMetrics;

import java.util.List;

/**
 */
public class ApproximateHistogramDruidModule implements DruidModule
{
  @Override
  public List getJacksonModules()
  {
    return ImmutableList.of(
        new SimpleModule().registerSubtypes(
            ApproximateHistogramFoldingAggregatorFactory.class,
            ApproximateHistogramAggregatorFactory.class,
            EqualBucketsPostAggregator.class,
            CustomBucketsPostAggregator.class,
            BucketsPostAggregator.class,
            QuantilesPostAggregator.class,
            QuantilePostAggregator.class,
            MinPostAggregator.class,
            MaxPostAggregator.class
        )
    );
  }

  @Override
  public void configure(Binder binder)
  {
    if (ComplexMetrics.getSerdeForType("approximateHistogram") == null) {
      ComplexMetrics.registerSerde("approximateHistogram", new ApproximateHistogramFoldingSerde());
    }
  }
}