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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.
 */
package org.elasticsearch.search.aggregations.bucket.sampler;

import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.search.aggregations.AggregationStreams;
import org.elasticsearch.search.aggregations.InternalAggregations;
import org.elasticsearch.search.aggregations.bucket.InternalSingleBucketAggregation;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;

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

/**
*
*/
public class InternalSampler extends InternalSingleBucketAggregation implements Sampler {

    public final static Type TYPE = new Type("sampler");

    public final static AggregationStreams.Stream STREAM = new AggregationStreams.Stream() {
        @Override
        public InternalSampler readResult(StreamInput in) throws IOException {
            InternalSampler result = new InternalSampler();
            result.readFrom(in);
            return result;
        }
    };

    public static void registerStreams() {
        AggregationStreams.registerStream(STREAM, TYPE.stream());
    }

    InternalSampler() {
    } // for serialization

    InternalSampler(String name, long docCount, InternalAggregations subAggregations, List pipelineAggregators, Map metaData) {
        super(name, docCount, subAggregations, pipelineAggregators, metaData);
    }

    @Override
    public Type type() {
        return TYPE;
    }

    @Override
    protected InternalSingleBucketAggregation newAggregation(String name, long docCount,
            InternalAggregations subAggregations) {
        return new InternalSampler(name, docCount, subAggregations, pipelineAggregators(), metaData);
    }
}