org.apache.lucene.facet.TopOrdAndIntQueue.java Source code

Introduction

Here is the source code for org.apache.lucene.facet.TopOrdAndIntQueue.java

Source

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.lucene.facet;

import org.apache.lucene.util.PriorityQueue;

/** Keeps highest results, first by largest int value,
 *  then tie break by smallest ord. */
public class TopOrdAndIntQueue extends PriorityQueue<TopOrdAndIntQueue.OrdAndValue> {

    /** Holds a single entry. */
    public static final class OrdAndValue {

        /** Ordinal of the entry. */
        public int ord;

        /** Value associated with the ordinal. */
        public int value;

        /** Default constructor. */
        public OrdAndValue() {
        }
    }

    /** Sole constructor. */
    public TopOrdAndIntQueue(int topN) {
        super(topN);
    }

    @Override
    protected boolean lessThan(OrdAndValue a, OrdAndValue b) {
        if (a.value < b.value) {
            return true;
        } else if (a.value > b.value) {
            return false;
        } else {
            return a.ord > b.ord;
        }
    }
}