/*
* 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.
*/
package org.apache.jackrabbit.rmi.value;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStream;
import java.io.RandomAccessFile;
import java.io.Serializable;
import javax.jcr.Binary;
import javax.jcr.RepositoryException;
/**
* Serializable binary.
*/
class SerializableBinary implements Binary, Serializable {
/**
* Serial version UID.
*/
private static final long serialVersionUID = -7742179594834275853L;
private static final int BUFFER_SIZE = 64 * 1024;
private transient long length;
private transient byte[] data;
private transient File file;
/**
* Creates a binary from the given stream. The stream is not closed.
*
* @param stream binary stream
*/
public SerializableBinary(InputStream stream) throws IOException {
length = 0;
data = null;
file = null;
OutputStream output = null;
try {
byte[] buffer = new byte[BUFFER_SIZE];
int n = stream.read(buffer);
while (n != -1) {
length += n;
if (length < buffer.length) {
n = stream.read(
buffer, (int) length, buffer.length - (int) length);
} else {
if (file == null) {
file = File.createTempFile("jackrabbit-jcr-rmi-", null);
output = new FileOutputStream(file);
output.write(buffer);
} else {
output.write(buffer, 0, n);
}
n = stream.read(buffer);
}
}
if (file == null) {
data = new byte[(int) length];
System.arraycopy(buffer, 0, data, 0, (int) length);
}
} finally {
if (output != null) {
output.close();
}
}
}
public synchronized int read(byte[] b, long position)
throws RepositoryException {
if (position < 0 || position >= length) {
return -1;
} else if (data != null) {
int n = Math.min(b.length, data.length - (int) position);
System.arraycopy(data, (int) position, b, 0, n);
return n;
} else if (file != null) {
try {
RandomAccessFile random = new RandomAccessFile(file, "r");
try {
random.seek(position);
return random.read(b);
} finally {
random.close();
}
} catch (FileNotFoundException e) {
throw new RepositoryException("Binary file is missing", e);
} catch (IOException e) {
throw new RepositoryException("Unable to read the binary", e);
}
} else {
throw new IllegalStateException("This binary has been disposed");
}
}
public synchronized InputStream getStream() throws RepositoryException {
if (data != null) {
return new ByteArrayInputStream(data);
} else if (file != null) {
try {
return new FileInputStream(file);
} catch (FileNotFoundException e) {
throw new RepositoryException("Binary file is missing", e);
}
} else {
throw new IllegalStateException("This binary has been disposed");
}
}
public long getSize() {
return length;
}
public synchronized void dispose() {
data = null;
if (file != null) {
file.delete();
file = null;
}
}
private synchronized void writeObject(ObjectOutputStream stream)
throws IOException {
stream.writeLong(length);
if (data != null) {
stream.write(data);
} else if (file != null) {
InputStream input = new FileInputStream(file);
try {
byte[] buffer = new byte[BUFFER_SIZE];
int n = input.read(buffer);
while (n != -1) {
stream.write(buffer, 0, n);
n = input.read(buffer);
}
} finally {
input.close();
}
} else {
throw new IllegalStateException("This binary has been disposed");
}
}
private void readObject(ObjectInputStream stream)
throws IOException {
length = stream.readLong();
if (length <= BUFFER_SIZE) {
data = new byte[(int) length];
stream.readFully(data);
file = null;
} else {
data = null;
file = File.createTempFile("jackrabbit-jcr-rmi-", null);
OutputStream output = new FileOutputStream(file);
try {
byte[] buffer = new byte[BUFFER_SIZE];
long count = 0;
int n = stream.read(buffer);
while (n != -1 && count < length) {
output.write(buffer, 0, n);
count += n;
n = stream.read(buffer, 0, Math.min(
buffer.length, (int) (length - count)));
}
} finally {
output.close();
}
}
}
public void finalize() {
dispose();
}
}