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package org.apache.lucene.index;
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership.
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* The ASF licenses this file to You under the Apache License, Version 2.0
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* (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.apache.org/licenses/LICENSE-2.0
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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import java.util.ArrayList;
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import org.apache.lucene.util.ReaderUtil;
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* Acts like Lucene 4.x's SlowMultiReaderWrapper for testing
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* of top-level MultiTermEnum, MultiTermDocs, ...
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public class SlowMultiReaderWrapper extends MultiReader {
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public SlowMultiReaderWrapper(IndexReader reader) {
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super(subReaders(reader));
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private static IndexReader[] subReaders(IndexReader reader) {
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ArrayList<IndexReader> list = new ArrayList<IndexReader>();
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ReaderUtil.gatherSubReaders(list, reader);
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return list.toArray(new IndexReader[list.size()]);
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public IndexReader[] getSequentialSubReaders() {
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public String toString() {
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return "SlowMultiReaderWrapper(" + super.toString() + ")";