content: package org.apache.lucene.search;
  
  /**
   * 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.
   */
  
  import org.apache.lucene.util.PriorityQueue;
  
  final class PhraseQueue extends PriorityQueue<PhrasePositions> {
    PhraseQueue(int size) {
      initialize(size);
    }
  
    @Override
    protected final boolean lessThan(PhrasePositions pp1, PhrasePositions pp2) {
      if (pp1.doc == pp2.doc) 
        if (pp1.position == pp2.position)
          // same doc and pp.position, so decide by actual term positions. 
          // rely on: pp.position == tp.position - offset. 
          if (pp1.offset == pp2.offset) {
            return pp1.ord < pp2.ord;
          } else {
            return pp1.offset < pp2.offset;
          }
        else {
          return pp1.position < pp2.position;
        }
      else {
        return pp1.doc < pp2.doc;
      }
    }
  }
  