org.elasticsearch.search.aggregations.bucket.histogram.DateHistogramAggregatorFactory Maven / Gradle / Ivy

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/*
 * Licensed to Elasticsearch under one or more contributor
 * license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright
 * ownership. Elasticsearch 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.
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package org.elasticsearch.search.aggregations.bucket.histogram;

import org.elasticsearch.common.rounding.Rounding;
import org.elasticsearch.search.aggregations.Aggregator;
import org.elasticsearch.search.aggregations.AggregatorFactories;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.InternalAggregation.Type;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;

import java.io.IOException;
import java.util.List;
import java.util.Map;

import org.elasticsearch.search.aggregations.support.AggregationContext;
import org.elasticsearch.search.aggregations.support.ValuesSource;
import org.elasticsearch.search.aggregations.support.ValuesSourceAggregatorFactory;
import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;

public final class DateHistogramAggregatorFactory
        extends ValuesSourceAggregatorFactory {

    private final DateHistogramInterval dateHistogramInterval;
    private final long interval;
    private final long offset;
    private final InternalOrder order;
    private final boolean keyed;
    private final long minDocCount;
    private final ExtendedBounds extendedBounds;
    private Rounding rounding;

    public DateHistogramAggregatorFactory(String name, Type type, ValuesSourceConfig config, long interval,
            DateHistogramInterval dateHistogramInterval, long offset, InternalOrder order, boolean keyed, long minDocCount,
            Rounding rounding, ExtendedBounds extendedBounds, AggregationContext context, AggregatorFactory parent,
            AggregatorFactories.Builder subFactoriesBuilder, Map metaData) throws IOException {
        super(name, type, config, context, parent, subFactoriesBuilder, metaData);
        this.interval = interval;
        this.dateHistogramInterval = dateHistogramInterval;
        this.offset = offset;
        this.order = order;
        this.keyed = keyed;
        this.minDocCount = minDocCount;
        this.extendedBounds = extendedBounds;
        this.rounding = rounding;
    }

    public long minDocCount() {
        return minDocCount;
    }

    @Override
    protected Aggregator doCreateInternal(ValuesSource.Numeric valuesSource, Aggregator parent, boolean collectsFromSingleBucket,
            List pipelineAggregators, Map metaData) throws IOException {
        if (collectsFromSingleBucket == false) {
            return asMultiBucketAggregator(this, context, parent);
        }
        return createAggregator(valuesSource, parent, pipelineAggregators, metaData);
    }

    private Aggregator createAggregator(ValuesSource.Numeric valuesSource, Aggregator parent, List pipelineAggregators,
            Map metaData) throws IOException {
        return new DateHistogramAggregator(name, factories, rounding, offset, order, keyed, minDocCount, extendedBounds, valuesSource,
                config.format(), context, parent, pipelineAggregators, metaData);
    }

    @Override
    protected Aggregator createUnmapped(Aggregator parent, List pipelineAggregators, Map metaData)
            throws IOException {
        return createAggregator(null, parent, pipelineAggregators, metaData);
    }
}