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/*
* Copyright Elasticsearch B.V. and/or licensed to Elasticsearch B.V. under one
* or more contributor license agreements. Licensed under the Elastic License
* 2.0 and the Server Side Public License, v 1; you may not use this file except
* in compliance with, at your election, the Elastic License 2.0 or the Server
* Side Public License, v 1.
*/
package org.elasticsearch.search.aggregations.metrics;
import org.elasticsearch.xcontent.ObjectParser;
import org.elasticsearch.xcontent.XContentBuilder;
import org.elasticsearch.xcontent.XContentParser;
import java.io.IOException;
public class ParsedAvg extends ParsedSingleValueNumericMetricsAggregation implements Avg {
@Override
public double getValue() {
return value();
}
@Override
public String getType() {
return AvgAggregationBuilder.NAME;
}
@Override
protected XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
// InternalAvg renders value only if the avg normalizer (count) is not 0.
// We parse back `null` as Double.POSITIVE_INFINITY so we check for that value here to get the same xContent output
boolean hasValue = value != Double.POSITIVE_INFINITY;
builder.field(CommonFields.VALUE.getPreferredName(), hasValue ? value : null);
if (hasValue && valueAsString != null) {
builder.field(CommonFields.VALUE_AS_STRING.getPreferredName(), valueAsString);
}
return builder;
}
private static final ObjectParser PARSER = new ObjectParser<>(ParsedAvg.class.getSimpleName(), true, ParsedAvg::new);
static {
declareSingleValueFields(PARSER, Double.POSITIVE_INFINITY);
}
public static ParsedAvg fromXContent(XContentParser parser, final String name) {
ParsedAvg avg = PARSER.apply(parser, null);
avg.setName(name);
return avg;
}
}