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
  17 using System;
  18 using PriorityQueue = Lucene.Net.Util.PriorityQueue;
  19
  20 namespace Lucene.Net.Index
  21 {
  22
  23         sealed class SegmentMergeQueue : PriorityQueue
  24         {
  25                 internal SegmentMergeQueue(int size)
  26                 {
  27                         Initialize(size);
  28                 }
  29
  30                 public override bool LessThan(System.Object a, System.Object b)
  31                 {
  32                         SegmentMergeInfo stiA = (SegmentMergeInfo) a;
  33                         SegmentMergeInfo stiB = (SegmentMergeInfo) b;
  34                         int comparison = stiA.term.CompareTo(stiB.term);
  35                         if (comparison == 0)
  36                                 return stiA.base_Renamed < stiB.base_Renamed;
  37                         else
  38                                 return comparison < 0;
  39                 }
  40
  41                 internal void  Close()
  42                 {
  43                         while (Top() != null)
  44                                 ((SegmentMergeInfo) Pop()).Close();
  45                 }
  46         }
  47 }