01: package org.apache.lucene.index;
02:
03: /**
04: * Licensed to the Apache Software Foundation (ASF) under one or more
05: * contributor license agreements. See the NOTICE file distributed with
06: * this work for additional information regarding copyright ownership.
07: * The ASF licenses this file to You under the Apache License, Version 2.0
08: * (the "License"); you may not use this file except in compliance with
09: * the License. You may obtain a copy of the License at
10: *
11: * http://www.apache.org/licenses/LICENSE-2.0
12: *
13: * Unless required by applicable law or agreed to in writing, software
14: * distributed under the License is distributed on an "AS IS" BASIS,
15: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
16: * See the License for the specific language governing permissions and
17: * limitations under the License.
18: */
19:
20: import java.io.IOException;
21: import org.apache.lucene.util.PriorityQueue;
22:
23: final class SegmentMergeQueue extends PriorityQueue {
24: SegmentMergeQueue(int size) {
25: initialize(size);
26: }
27:
28: protected final boolean lessThan(Object a, Object b) {
29: SegmentMergeInfo stiA = (SegmentMergeInfo) a;
30: SegmentMergeInfo stiB = (SegmentMergeInfo) b;
31: int comparison = stiA.term.compareTo(stiB.term);
32: if (comparison == 0)
33: return stiA.base < stiB.base;
34: else
35: return comparison < 0;
36: }
37:
38: final void close() throws IOException {
39: while (top() != null)
40: ((SegmentMergeInfo) pop()).close();
41: }
42:
43: }
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