package com.browseengine.bobo.facets.impl;
import java.util.Comparator;
import com.browseengine.bobo.api.BrowseFacet;
import com.browseengine.bobo.api.ComparatorFactory;
import com.browseengine.bobo.api.FieldValueAccessor;
import com.browseengine.bobo.util.BigSegmentedArray;
import com.browseengine.bobo.util.IntBoundedPriorityQueue.IntComparator;
public class FacetHitcountComparatorFactory implements ComparatorFactory {
public IntComparator newComparator(FieldValueAccessor valueList,
final BigSegmentedArray counts) {
return new IntComparator(){
public int compare(Integer f1, Integer f2) {
int val = counts.get(f1) - counts.get(f2);
if (val==0)
{
val=f2-f1;
}
return val;
}
// use ploymorphism to avoid auto-boxing
public int compare(int f1, int f2)
{
int val = counts.get(f1) - counts.get(f2);
if (val==0)
{
val=f2-f1;
}
return val;
}
};
}
public static final Comparator<BrowseFacet> FACET_HITS_COMPARATOR = new Comparator<BrowseFacet>()
{
public int compare(BrowseFacet f1, BrowseFacet f2) {
int val = f2.getHitCount() - f1.getHitCount();
if (val==0)
{
val=f1.getValue().compareTo(f2.getValue());
}
return val;
}
};
public Comparator<BrowseFacet> newComparator() {
return FACET_HITS_COMPARATOR;
}
}