beagled/Lucene.Net/Index/SegmentMergeQueue.cs

   1 /*
   2  * Copyright 2004 The Apache Software Foundation
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  * http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 using System;
  17 using PriorityQueue = Lucene.Net.Util.PriorityQueue;
  18 namespace Lucene.Net.Index
  19 {
  20
  21         sealed class SegmentMergeQueue : PriorityQueue
  22         {
  23                 internal SegmentMergeQueue(int size)
  24                 {
  25                         Initialize(size);
  26                 }
  27
  28                 public override bool LessThan(System.Object a, System.Object b)
  29                 {
  30                         SegmentMergeInfo stiA = (SegmentMergeInfo) a;
  31                         SegmentMergeInfo stiB = (SegmentMergeInfo) b;
  32                         int comparison = stiA.term.CompareTo(stiB.term);
  33                         if (comparison == 0)
  34                                 return stiA.base_Renamed < stiB.base_Renamed;
  35                         else
  36                                 return comparison < 0;
  37                 }
  38
  39                 internal void  Close()
  40                 {
  41                         while (Top() != null)
  42                                 ((SegmentMergeInfo) Pop()).Close();
  43                 }
  44         }
  45 }