1 package org.apache.lucene.index;
4 * Licensed to the Apache Software Foundation (ASF) under one or more
5 * contributor license agreements. See the NOTICE file distributed with
6 * this work for additional information regarding copyright ownership.
7 * The ASF licenses this file to You under the Apache License, Version 2.0
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9 * the License. You may obtain a copy of the License at
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20 class ReadOnlySegmentReader extends SegmentReader {
22 static void noWrite() {
23 throw new UnsupportedOperationException("This IndexReader cannot make any changes to the index (it was opened with readOnly = true)");
27 protected void acquireWriteLock() {
33 public boolean isDeleted(int n) {
34 return deletedDocs != null && deletedDocs.get(n);