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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.avg;
import org.elasticsearch.common.xcontent.ObjectParser;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentParser;
import org.elasticsearch.search.aggregations.metrics.ParsedSingleValueNumericMetricsAggregation;
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;
}
}
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