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package org.apache.lucene.store;
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import java.io.IOException;
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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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* Used by MockDirectoryWrapper to create an input stream that
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* keeps track of when it's been closed.
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public class MockIndexInputWrapper extends IndexInput {
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private MockDirectoryWrapper dir;
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private IndexInput delegate;
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private boolean isClone;
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private boolean closed;
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/** Construct an empty output buffer. */
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public MockIndexInputWrapper(MockDirectoryWrapper dir, String name, IndexInput delegate) {
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super("MockIndexInputWrapper(name=" + name + " delegate=" + delegate + ")");
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this.delegate = delegate;
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public void close() throws IOException {
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// turn on the following to look for leaks closing inputs,
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// after fixing TestTransactions
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// dir.maybeThrowDeterministicException();
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// Pending resolution on LUCENE-686 we may want to
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// remove the conditional check so we also track that
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// all clones get closed:
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dir.removeIndexInput(this, name);
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private void ensureOpen() {
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throw new RuntimeException("Abusing closed IndexInput!");
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public Object clone() {
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dir.inputCloneCount.incrementAndGet();
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IndexInput iiclone = (IndexInput) delegate.clone();
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MockIndexInputWrapper clone = new MockIndexInputWrapper(dir, name, iiclone);
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// Pending resolution on LUCENE-686 we may want to
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// uncomment this code so that we also track that all
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synchronized(dir.openFiles) {
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if (dir.openFiles.containsKey(name)) {
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Integer v = (Integer) dir.openFiles.get(name);
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v = Integer.valueOf(v.intValue()+1);
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dir.openFiles.put(name, v);
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throw new RuntimeException("BUG: cloned file was not open?");
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public long getFilePointer() {
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return delegate.getFilePointer();
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public void seek(long pos) throws IOException {
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public long length() {
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return delegate.length();
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public byte readByte() throws IOException {
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return delegate.readByte();
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public void readBytes(byte[] b, int offset, int len) throws IOException {
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delegate.readBytes(b, offset, len);
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public void copyBytes(IndexOutput out, long numBytes) throws IOException {
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delegate.copyBytes(out, numBytes);
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public void readBytes(byte[] b, int offset, int len, boolean useBuffer)
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delegate.readBytes(b, offset, len, useBuffer);
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public int readInt() throws IOException {
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return delegate.readInt();
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public int readVInt() throws IOException {
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return delegate.readVInt();
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public long readLong() throws IOException {
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return delegate.readLong();
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public long readVLong() throws IOException {
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return delegate.readVLong();
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public String readString() throws IOException {
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return delegate.readString();
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public Map<String,String> readStringStringMap() throws IOException {
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return delegate.readStringStringMap();
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public void setModifiedUTF8StringsMode() {
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delegate.setModifiedUTF8StringsMode();
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public void readChars(char[] buffer, int start, int length)
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delegate.readChars(buffer, start, length);
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public void skipChars(int length) throws IOException {
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delegate.skipChars(length);