/*
* Copyright 2013 Red Hat Inc. and/or its affiliates and other contributors.
*
* Licensed 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.switchyard.serial.format;
import java.beans.ExceptionListener;
import java.beans.XMLDecoder;
import java.beans.XMLEncoder;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import org.switchyard.common.io.CountingOutputStream;
import org.switchyard.common.type.Classes;
import org.switchyard.serial.BaseSerializer;
import org.switchyard.serial.FormatType;
/**
* A JDK serializer that performs {@link FormatType.XML_BEAN} serialization/deserialization.
*
* @author David Ward <<a href="mailto:dward@jboss.org">dward@jboss.org</a>> © 2012 Red Hat Inc.
*/
public final class XMLBeanSerializer extends BaseSerializer {
/**
* Default constructor.
*/
public XMLBeanSerializer() {
super(FormatType.XML_BEAN);
}
/**
* {@inheritDoc}
*/
@Override
public <T> int serialize(T obj, Class<T> type, OutputStream out) throws IOException {
out = new CountingOutputStream(new BufferedOutputStream(out, getBufferSize()));
EL el = new EL();
XMLEncoder enc = new XMLEncoder(out);
try {
enc.setExceptionListener(el);
enc.writeObject(obj);
enc.flush();
} finally {
if (isCloseEnabled()) {
enc.close();
}
}
IOException ioe = el.getIOException();
if (ioe != null) {
throw ioe;
}
return ((CountingOutputStream)out).getCount();
}
/**
* {@inheritDoc}
*/
@Override
public <T> T deserialize(InputStream in, Class<T> type) throws IOException {
in = new BufferedInputStream(in, getBufferSize());
EL el = new EL();
XMLDecoder dec = new XMLDecoder(in, null, el, Classes.getTCCL());
Object obj;
try {
obj = dec.readObject();
} finally {
if (isCloseEnabled()) {
dec.close();
}
}
IOException ioe = el.getIOException();
if (ioe != null) {
throw ioe;
}
return type.cast(obj);
}
private static final class EL implements ExceptionListener {
private Exception _e;
/**
* {@inheritDoc}
*/
@Override
public void exceptionThrown(Exception e) {
if (_e != null) {
_e = e;
}
}
/**
* Gets any problem that occurred as an IOException.
* @return the problem
*/
public IOException getIOException() {
if (_e != null) {
if (_e instanceof IOException) {
return (IOException)_e;
}
return new IOException(_e);
}
return null;
}
}
}