package org.apache.lucene.store;
import java.io.IOException;
import java.util.Map;
/**
* 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.
*/
/**
* Used by MockDirectoryWrapper to create an input stream that
* keeps track of when it's been closed.
*/
public class MockIndexInputWrapper extends IndexInput {
private MockDirectoryWrapper dir;
private String name;
private IndexInput delegate;
private boolean isClone;
/** Construct an empty output buffer.
* @throws IOException */
public MockIndexInputWrapper(MockDirectoryWrapper dir, String name, IndexInput delegate) {
this.name = name;
this.dir = dir;
this.delegate = delegate;
}
@Override
public void close() throws IOException {
delegate.close();
// Pending resolution on LUCENE-686 we may want to
// remove the conditional check so we also track that
// all clones get closed:
if (!isClone) {
synchronized(dir) {
Integer v = dir.openFiles.get(name);
// Could be null when MockRAMDirectory.crash() was called
if (v != null) {
if (v.intValue() == 1) {
dir.openFiles.remove(name);
} else {
v = Integer.valueOf(v.intValue()-1);
dir.openFiles.put(name, v);
}
}
dir.files.remove(this);
}
}
}
@Override
public Object clone() {
IndexInput iiclone = (IndexInput) delegate.clone();
MockIndexInputWrapper clone = new MockIndexInputWrapper(dir, name, iiclone);
clone.isClone = true;
// Pending resolution on LUCENE-686 we may want to
// uncomment this code so that we also track that all
// clones get closed:
/*
synchronized(dir.openFiles) {
if (dir.openFiles.containsKey(name)) {
Integer v = (Integer) dir.openFiles.get(name);
v = Integer.valueOf(v.intValue()+1);
dir.openFiles.put(name, v);
} else {
throw new RuntimeException("BUG: cloned file was not open?");
}
}
*/
return clone;
}
@Override
public long getFilePointer() {
return delegate.getFilePointer();
}
@Override
public void seek(long pos) throws IOException {
delegate.seek(pos);
}
@Override
public long length() {
return delegate.length();
}
@Override
public byte readByte() throws IOException {
return delegate.readByte();
}
@Override
public void readBytes(byte[] b, int offset, int len) throws IOException {
delegate.readBytes(b, offset, len);
}
@Override
public void copyBytes(IndexOutput out, long numBytes) throws IOException {
delegate.copyBytes(out, numBytes);
}
@Override
public void readBytes(byte[] b, int offset, int len, boolean useBuffer)
throws IOException {
delegate.readBytes(b, offset, len, useBuffer);
}
@Override
public short readShort() throws IOException {
return delegate.readShort();
}
@Override
public int readInt() throws IOException {
return delegate.readInt();
}
@Override
public int readVInt() throws IOException {
return delegate.readVInt();
}
@Override
public long readLong() throws IOException {
return delegate.readLong();
}
@Override
public long readVLong() throws IOException {
return delegate.readVLong();
}
@Override
public String readString() throws IOException {
return delegate.readString();
}
@Override
public Map<String,String> readStringStringMap() throws IOException {
return delegate.readStringStringMap();
}
}