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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.common.xcontent.XContentBuilder;
import org.elasticsearch.search.aggregations.AggregationStreams;
import org.elasticsearch.search.aggregations.InternalAggregation;
import org.elasticsearch.search.aggregations.InternalAggregations;
import org.elasticsearch.search.aggregations.pipeline.PipelineAggregator;
import java.io.IOException;
import java.util.List;
import java.util.Map;
/**
*
*/
public class UnmappedSampler extends InternalSampler {
public static final Type TYPE = new Type("sampler", "umsampler");
public static final AggregationStreams.Stream STREAM = new AggregationStreams.Stream() {
@Override
public UnmappedSampler readResult(StreamInput in) throws IOException {
UnmappedSampler sampler = new UnmappedSampler();
sampler.readFrom(in);
return sampler;
}
};
public static void registerStreams() {
AggregationStreams.registerStream(STREAM, TYPE.stream());
}
UnmappedSampler() {
}
public UnmappedSampler(String name, List pipelineAggregators, Map metaData) {
super(name, 0, InternalAggregations.EMPTY, pipelineAggregators, metaData);
}
@Override
public Type type() {
return TYPE;
}
@Override
public InternalAggregation doReduce(List aggregations, ReduceContext reduceContext) {
for (InternalAggregation agg : aggregations) {
if (!(agg instanceof UnmappedSampler)) {
return agg.reduce(aggregations, reduceContext);
}
}
return this;
}
@Override
public XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
builder.field(InternalAggregation.CommonFields.DOC_COUNT, 0);
return builder;
}
}