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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.searchlib.aggregation;
import com.yahoo.searchlib.expression.ResultNode;
import com.yahoo.searchlib.expression.SingleResultNode;
import com.yahoo.vespa.objects.Deserializer;
import com.yahoo.vespa.objects.ObjectVisitor;
import com.yahoo.vespa.objects.Serializer;
/**
* This is an aggregated result holding the maximum result of the matching hits.
*
* @author baldersheim
* @author Simon Thoresen Hult
*/
public class MaxAggregationResult extends AggregationResult {
public static final int classId = registerClass(0x4000 + 83, MaxAggregationResult.class, MaxAggregationResult::new);
private SingleResultNode max;
/**
* Constructs an empty result node. <b>NOTE:</b> This instance is broken until non-optional member data is set.
*/
public MaxAggregationResult() {
}
/**
* Constructs an instance of this class with given max value.
*
* @param max The initial maximum to set.
*/
public MaxAggregationResult(SingleResultNode max) {
setMax(max);
}
/**
* Returns the maximum value found in all matching hits.
*
* @return The value.
*/
public final SingleResultNode getMax() {
return max;
}
/**
* Sets the maximum value found in all matching hits.
*
* @param max The value.
* @return This, to allow chaining.
*/
public final MaxAggregationResult setMax(SingleResultNode max) {
this.max = max;
return this;
}
@Override
public ResultNode getRank() {
return max;
}
@Override
protected int onGetClassId() {
return classId;
}
@Override
protected void onSerialize(Serializer buf) {
super.onSerialize(buf);
serializeOptional(buf, max);
}
@Override
protected void onDeserialize(Deserializer buf) {
super.onDeserialize(buf);
max = (SingleResultNode)deserializeOptional(buf);
}
@Override
protected void onMerge(AggregationResult result) {
max.max(((MaxAggregationResult)result).max);
}
@Override
protected boolean equalsAggregation(AggregationResult obj) {
return equals(max, ((MaxAggregationResult)obj).max);
}
@Override
public MaxAggregationResult clone() {
MaxAggregationResult obj = (MaxAggregationResult)super.clone();
if (max != null) {
obj.max = (SingleResultNode)max.clone();
}
return obj;
}
@Override
public void visitMembers(ObjectVisitor visitor) {
super.visitMembers(visitor);
visitor.visit("max", max);
}
}
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