Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance. Project price only 1 $
You can buy this project and download/modify it how often you want.
/*
* JBoss, Home of Professional Open Source
* Copyright 2008, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.marshalling;
import java.io.IOException;
import java.io.EOFException;
/**
* An abstract implementation of the {@code Unmarshaller} interface. Most of the
* write methods delegate directly to the current data output.
*/
public abstract class AbstractUnmarshaller implements Unmarshaller {
/** The configured class externalizer factory. */
protected final ClassExternalizerFactory classExternalizerFactory;
/** The configured stream header. */
protected final StreamHeader streamHeader;
/** The configured class resolver. */
protected final ClassResolver classResolver;
/** The configured object resolver. */
protected final ObjectResolver objectResolver;
/** The configured object creator. */
protected final Creator creator;
/** The configured class table. */
protected final ClassTable classTable;
/** The configured object table. */
protected final ObjectTable objectTable;
/** The configured version. */
protected final int configuredVersion;
/** The current byte input. */
protected ByteInput byteInput;
/**
* Construct a new unmarshaller instance.
*
* @param marshallerFactory the marshaller factory
* @param configuration
*/
protected AbstractUnmarshaller(final AbstractMarshallerFactory marshallerFactory, final MarshallingConfiguration configuration) {
final ClassExternalizerFactory classExternalizerFactory = configuration.getClassExternalizerFactory();
this.classExternalizerFactory = classExternalizerFactory == null ? marshallerFactory.getDefaultClassExternalizerFactory() : classExternalizerFactory;
final StreamHeader streamHeader = configuration.getStreamHeader();
this.streamHeader = streamHeader == null ? marshallerFactory.getDefaultStreamHeader() : streamHeader;
final ClassResolver classResolver = configuration.getClassResolver();
this.classResolver = classResolver == null ? marshallerFactory.getDefaultClassResolver() : classResolver;
final ObjectResolver objectResolver = configuration.getObjectResolver();
this.objectResolver = objectResolver == null ? marshallerFactory.getDefaultObjectResolver() : objectResolver;
final Creator creator = configuration.getCreator();
this.creator = creator == null ? marshallerFactory.getDefaultCreator() : creator;
final ClassTable classTable = configuration.getClassTable();
this.classTable = classTable == null ? marshallerFactory.getDefaultClassTable() : classTable;
final ObjectTable objectTable = configuration.getObjectTable();
this.objectTable = objectTable == null ? marshallerFactory.getDefaultObjectTable() : objectTable;
final int configuredVersion = configuration.getVersion();
this.configuredVersion = configuredVersion == -1 ? marshallerFactory.getDefaultVersion() : configuredVersion;
buffer = new byte[configuration.getBufferSize()];
}
/** {@inheritDoc} */
public final Object readObject() throws ClassNotFoundException, IOException {
return doReadObject(false);
}
/** {@inheritDoc} */
public final Object readObjectUnshared() throws ClassNotFoundException, IOException {
return doReadObject(true);
}
/**
* Implementation of the actual object-reading method.
*
* @param unshared {@code true} if the instance should be unshared, {@code false} if it is shared
* @return the object to read
* @throws ClassNotFoundException if the class for the object could not be loaded
* @throws IOException if an I/O error occurs
*/
protected abstract Object doReadObject(boolean unshared) throws ClassNotFoundException, IOException;
private final byte[] buffer;
private int position;
private int limit;
/** {@inheritDoc} */
public int read() throws IOException {
final int limit = this.limit;
if (limit == -1) {
return -1;
}
final int position = this.position;
final byte[] buffer = this.buffer;
if (position == limit) {
if ((this.limit = byteInput.read(buffer)) == -1) {
this.position = 0;
return -1;
} else {
this.position = 1;
return buffer[0] & 0xff;
}
} else {
this.position = position + 1;
return buffer[position] & 0xff;
}
}
/** {@inheritDoc} */
public int read(final byte[] b) throws IOException {
return read(b, 0, b.length);
}
/** {@inheritDoc} */
public int read(final byte[] b, final int off, final int len) throws IOException {
final int limit = this.limit;
if (limit == -1) {
return -1;
}
final int position = this.position;
final int remaining = limit - position;
// pass through if the buffer is empty
if (remaining == 0) {
return byteInput.read(b, off, len);
}
final byte[] buffer = this.buffer;
if (len > remaining) {
System.arraycopy(buffer, position, b, off, remaining);
this.limit = this.position = 0;
final int res = byteInput.read(b, off + remaining, len - remaining);
return res == -1 ? remaining : res + remaining;
} else {
System.arraycopy(buffer, position, b, off, len);
this.position += len;
return len;
}
}
/** {@inheritDoc} */
public long skip(final long n) throws IOException {
if (n < 0) {
throw new IllegalArgumentException("n < 0");
}
final int limit = this.limit;
if (limit == -1) {
return 0L;
}
final long remaining = limit - position;
if (remaining > n) {
position += (int) n;
return n;
} else {
position = this.limit = 0;
return byteInput.skip(n - remaining) + remaining;
}
}
/** {@inheritDoc} */
public int available() throws IOException {
return limit - position + byteInput.available();
}
private EOFException eofOnRead() {
return new EOFException("Read past end of file");
}
/** {@inheritDoc} */
public void readFully(final byte[] b) throws IOException {
readFully(b, 0, b.length);
}
/** {@inheritDoc} */
public void readFully(final byte[] b, int off, int len) throws IOException {
if (limit == -1) {
throw eofOnRead();
}
int remaining = limit - position;
if (len > remaining) {
if (remaining > 0) {
System.arraycopy(buffer, position, b, off, remaining);
limit = position = 0;
off += remaining;
len -= remaining;
}
do {
remaining = byteInput.read(b, off, len);
if (remaining == -1) {
throw eofOnRead();
}
off += remaining;
len -= remaining;
} while (len != 0);
} else try {
System.arraycopy(buffer, position, b, off, len);
position += len;
} catch (NullPointerException e) {
throw eofOnRead();
}
}
/** {@inheritDoc} */
public int skipBytes(final int n) throws IOException {
if (n < 0) {
throw new IllegalArgumentException("n < 0");
}
final int limit = this.limit;
if (limit == -1) {
return 0;
}
final int remaining = limit - position;
if (remaining > n) {
position += n;
return n;
} else {
position = this.limit = 0;
return (int) (byteInput.skip(n - remaining) + remaining);
}
}
/** {@inheritDoc} */
public boolean readBoolean() throws IOException {
final int limit = this.limit;
if (limit == -1) {
throw eofOnRead();
}
int position;
final byte[] buffer = this.buffer;
if ((position = this.position++) == limit) {
this.position = 1;
if ((this.limit = byteInput.read(buffer)) == -1) {
throw eofOnRead();
}
return buffer[0] != 0;
}
this.position = position + 1;
return buffer[position] != 0;
}
/** {@inheritDoc} */
public byte readByte() throws IOException {
final int limit;
if ((limit = this.limit) == -1) {
throw eofOnRead();
}
int position;
final byte[] buffer = this.buffer;
if ((position = this.position++) == limit) {
this.position = 1;
if ((this.limit = byteInput.read(buffer)) == -1) {
throw eofOnRead();
}
return buffer[0];
}
this.position = position + 1;
return buffer[position];
}
/** {@inheritDoc} */
public int readUnsignedByte() throws IOException {
return readUnsignedByteDirect();
}
/** {@inheritDoc} */
public short readShort() throws IOException {
int position = this.position;
int remaining = limit - position;
if (remaining < 2) {
return (short) (readUnsignedByteDirect() << 8 | readUnsignedByteDirect());
} else {
final byte[] buffer = this.buffer;
this.position = position + 2;
return (short) (buffer[position] << 8 | (buffer[position + 1] & 0xff));
}
}
/** {@inheritDoc} */
public int readUnsignedShort() throws IOException {
int position = this.position;
int remaining = limit - position;
if (remaining < 2) {
return readUnsignedByteDirect() << 8 | readUnsignedByteDirect();
} else {
final byte[] buffer = this.buffer;
this.position = position + 2;
return (buffer[position] & 0xff) << 8 | (buffer[position + 1] & 0xff);
}
}
protected int readUnsignedByteDirect() throws IOException {
final int limit;
if ((limit = this.limit) == -1) {
throw eofOnRead();
}
int position;
final byte[] buffer = this.buffer;
if ((position = this.position++) == limit) {
this.position = 1;
if ((this.limit = byteInput.read(buffer)) == -1) {
throw eofOnRead();
}
return buffer[0] & 0xff;
}
return buffer[position] & 0xff;
}
/** {@inheritDoc} */
public char readChar() throws IOException {
int position = this.position;
int remaining = limit - position;
if (remaining < 2) {
return (char) (readUnsignedByteDirect() << 8 | readUnsignedByteDirect());
} else {
final byte[] buffer = this.buffer;
this.position = position + 2;
return (char) (buffer[position] << 8 | (buffer[position + 1] & 0xff));
}
}
/** {@inheritDoc} */
public int readInt() throws IOException {
return readIntDirect();
}
public long readLong() throws IOException {
return readLongDirect();
}
/** {@inheritDoc} */
protected long readLongDirect() throws IOException {
return (long) readIntDirect() << 32L | (long) readIntDirect() & 0xffffffffL;
}
/** {@inheritDoc} */
public float readFloat() throws IOException {
return Float.intBitsToFloat(readIntDirect());
}
protected int readIntDirect() throws IOException {
int position = this.position;
int remaining = limit - position;
if (remaining < 4) {
return readUnsignedByteDirect() << 24 | readUnsignedByteDirect() << 16 | readUnsignedByteDirect() << 8 | readUnsignedByteDirect();
} else {
final byte[] buffer = this.buffer;
this.position = position + 4;
return buffer[position] << 24 | (buffer[position + 1] & 0xff) << 16 | (buffer[position + 2] & 0xff) << 8 | (buffer[position + 3] & 0xff);
}
}
/** {@inheritDoc} */
public double readDouble() throws IOException {
return Double.longBitsToDouble(readLongDirect());
}
/** {@inheritDoc} */
public String readLine() throws IOException {
throw new UnsupportedOperationException("readLine() not supported");
}
/** {@inheritDoc} */
public String readUTF() throws IOException {
return UTFUtils.readUTFBytesByByteCount(this, readUnsignedShort());
}
/** {@inheritDoc} */
public void start(final ByteInput byteInput) throws IOException {
this.byteInput = byteInput;
position = limit = 0;
doStart();
}
/** {@inheritDoc} */
public void finish() throws IOException {
limit = -1;
position = 0;
byteInput = null;
clearClassCache();
}
/**
* Perform any unmarshaller-specific start activity. This implementation simply reads the stream header.
*
* @throws IOException if I/O exception occurs
*/
protected void doStart() throws IOException {
streamHeader.readHeader(this);
}
}
