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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.metrics;
import org.elasticsearch.common.io.stream.StreamInput;
import org.elasticsearch.common.io.stream.StreamOutput;
import org.elasticsearch.common.xcontent.ObjectParser;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.index.query.QueryShardContext;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import org.elasticsearch.search.aggregations.AggregatorFactories.Builder;
import org.elasticsearch.search.aggregations.AggregatorFactory;
import org.elasticsearch.search.aggregations.support.ValueType;
import org.elasticsearch.search.aggregations.support.ValuesSource;
import org.elasticsearch.search.aggregations.support.ValuesSource.Numeric;
import org.elasticsearch.search.aggregations.support.ValuesSourceAggregationBuilder;
import org.elasticsearch.search.aggregations.support.ValuesSourceConfig;
import org.elasticsearch.search.aggregations.support.ValuesSourceParserHelper;
import org.elasticsearch.search.aggregations.support.CoreValuesSourceType;
import java.io.IOException;
import java.util.Map;
public class AvgAggregationBuilder extends ValuesSourceAggregationBuilder.LeafOnly {
public static final String NAME = "avg";
private static final ObjectParser PARSER = ObjectParser.fromBuilder(NAME, AvgAggregationBuilder::new);
static {
ValuesSourceParserHelper.declareNumericFields(PARSER, true, true, false);
}
public static AggregationBuilder parse(String aggregationName, XContentParser parser) throws IOException {
return PARSER.parse(parser, aggregationName);
}
public AvgAggregationBuilder(String name) {
super(name, CoreValuesSourceType.NUMERIC, ValueType.NUMERIC);
}
public AvgAggregationBuilder(AvgAggregationBuilder clone, Builder factoriesBuilder, Map metaData) {
super(clone, factoriesBuilder, metaData);
}
/**
* Read from a stream.
*/
public AvgAggregationBuilder(StreamInput in) throws IOException {
super(in, CoreValuesSourceType.NUMERIC, ValueType.NUMERIC);
}
@Override
protected AggregationBuilder shallowCopy(Builder factoriesBuilder, Map metaData) {
return new AvgAggregationBuilder(this, factoriesBuilder, metaData);
}
@Override
protected void innerWriteTo(StreamOutput out) {
// Do nothing, no extra state to write to stream
}
@Override
protected AvgAggregatorFactory innerBuild(QueryShardContext queryShardContext, ValuesSourceConfig config,
AggregatorFactory parent, Builder subFactoriesBuilder) throws IOException {
return new AvgAggregatorFactory(name, config, queryShardContext, parent, subFactoriesBuilder, metaData);
}
@Override
public XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
return builder;
}
@Override
public String getType() {
return NAME;
}
}