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// Copyright Yahoo. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.search.result;
import java.util.Comparator;
/**
* Ensures that HitGroups are placed last in the result.
*
* @author Tony Vaagenes
*/
public class HitGroupsLastComparator extends ChainableComparator {
public HitGroupsLastComparator(Comparator<Hit> secondaryComparator) {
super(secondaryComparator);
}
@Override
public int compare(Hit left, Hit right) {
if (isHitGroup(left) ^ isHitGroup(right)) {
return isHitGroup(left) ? 1 : -1;
} else {
return super.compare(left, right);
}
}
private boolean isHitGroup(Hit hit) {
return hit instanceof HitGroup;
}
@Override
public String toString() {
return getSecondaryComparator().toString();
}
}
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