org.fusesource.hawtbuf.codec.ObjectCodec Maven / Gradle / Ivy
/**
* 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.fusesource.hawtbuf.codec;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInput;
import java.io.DataOutput;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
/**
* Implementation of a Marshaller for Objects
*
*/
public class ObjectCodec extends VariableCodec {
public void encode(Object object, DataOutput dataOut) throws IOException {
ByteArrayOutputStream bytesOut = new ByteArrayOutputStream();
ObjectOutputStream objectOut = new ObjectOutputStream(bytesOut);
objectOut.writeObject(object);
objectOut.close();
byte[] data = bytesOut.toByteArray();
dataOut.writeInt(data.length);
dataOut.write(data);
}
public T decode(DataInput dataIn) throws IOException {
int size = dataIn.readInt();
byte[] data = new byte[size];
dataIn.readFully(data);
ByteArrayInputStream bytesIn = new ByteArrayInputStream(data);
ObjectInputStream objectIn = new ObjectInputStream(bytesIn);
try {
return (T) objectIn.readObject();
} catch (ClassNotFoundException e) {
throw createIOException(e.getMessage(), e);
}
}
private static IOException createIOException(String message, Throwable cause) {
IOException answer = new IOException(message);
answer.initCause(cause);
return answer;
}
}