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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.pipeline;
import org.elasticsearch.xcontent.ObjectParser;
import org.elasticsearch.xcontent.ObjectParser.ValueType;
import org.elasticsearch.xcontent.ParseField;
import org.elasticsearch.xcontent.XContentBuilder;
import org.elasticsearch.xcontent.XContentParser;
import java.io.IOException;
public class ParsedDerivative extends ParsedSimpleValue implements Derivative {
private double normalizedValue;
private String normalizedAsString;
private boolean hasNormalizationFactor;
private static final ParseField NORMALIZED_AS_STRING = new ParseField("normalized_value_as_string");
private static final ParseField NORMALIZED = new ParseField("normalized_value");
@Override
public double normalizedValue() {
return this.normalizedValue;
}
@Override
public String getType() {
return DerivativePipelineAggregationBuilder.NAME;
}
private static final ObjectParser PARSER = new ObjectParser<>(
ParsedDerivative.class.getSimpleName(),
true,
ParsedDerivative::new
);
static {
declareSingleValueFields(PARSER, Double.NaN);
PARSER.declareField((agg, normalized) -> {
agg.normalizedValue = normalized;
agg.hasNormalizationFactor = true;
}, (parser, context) -> parseDouble(parser, Double.NaN), NORMALIZED, ValueType.DOUBLE_OR_NULL);
PARSER.declareString((agg, normalAsString) -> agg.normalizedAsString = normalAsString, NORMALIZED_AS_STRING);
}
public static ParsedDerivative fromXContent(XContentParser parser, final String name) {
ParsedDerivative derivative = PARSER.apply(parser, null);
derivative.setName(name);
return derivative;
}
@Override
protected XContentBuilder doXContentBody(XContentBuilder builder, Params params) throws IOException {
super.doXContentBody(builder, params);
if (hasNormalizationFactor) {
boolean hasValue = Double.isNaN(normalizedValue) == false;
builder.field(NORMALIZED.getPreferredName(), hasValue ? normalizedValue : null);
if (hasValue && normalizedAsString != null) {
builder.field(NORMALIZED_AS_STRING.getPreferredName(), normalizedAsString);
}
}
return builder;
}
}