21 lines
637 B
Java
21 lines
637 B
Java
package it.cavallium.dbengine.lucene;
|
|
|
|
import java.util.concurrent.ThreadLocalRandom;
|
|
import org.apache.lucene.search.FieldComparator;
|
|
import org.apache.lucene.search.FieldComparatorSource;
|
|
import org.warp.commonutils.random.LFSR;
|
|
|
|
public class RandomFieldComparatorSource extends FieldComparatorSource {
|
|
|
|
private final LFSR rand;
|
|
|
|
public RandomFieldComparatorSource() {
|
|
this.rand = LFSR.random(24, ThreadLocalRandom.current().nextInt(1 << 24));
|
|
}
|
|
|
|
@Override
|
|
public FieldComparator<?> newComparator(String fieldName, int numHits, int sortPos, boolean reversed) {
|
|
return new RandomFieldComparator(rand.iterator(), numHits);
|
|
}
|
|
}
|