package org.apache.lucene.index;/** * Copyright 2004 The Apache Software Foundation * * Licensed 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 java.io.IOException;import org.apache.lucene.util.PriorityQueue;final class SegmentMergeQueue extends PriorityQueue {  SegmentMergeQueue(int size) {    initialize(size);  }  protected final boolean lessThan(Object a, Object b) {    SegmentMergeInfo stiA = (SegmentMergeInfo)a;    SegmentMergeInfo stiB = (SegmentMergeInfo)b;    int comparison = stiA.term.compareTo(stiB.term);    if (comparison == 0)      return stiA.base < stiB.base;     else      return comparison < 0;  }  final void close() throws IOException {    while (top() != null)      ((SegmentMergeInfo)pop()).close();  }}