--- /dev/null
+package org.apache.lucene.index;
+
+/**
+ * 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 java.io.IOException;
+import org.apache.lucene.util.PriorityQueue;
+
+final class SegmentMergeQueue extends PriorityQueue<SegmentMergeInfo> {
+ SegmentMergeQueue(int size) {
+ initialize(size);
+ }
+
+ @Override
+ protected final boolean lessThan(SegmentMergeInfo stiA, SegmentMergeInfo stiB) {
+ 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)
+ pop().close();
+ }
+
+}