Cannot deserialize proxy classes
--------------------------------
Key: PAXWICKET-25
URL: http://issues.ops4j.org/jira/browse/PAXWICKET-25
Project: Pax Wicket
Issue Type: Bug
Reporter: David Leangen
Assignee: Niclas Hedhman
Proxy classes are not being serialized, which means that they cannot be
deserialized.
Upon deserialization by Wicket, an exception is thrown.
Currently, this problem can be worked around by doing this:
public class SomeClass
implements Serialziation
{
private static final long serialVersionUID = 1L;
private transient Object someProxy;
private final InvocationHandler handler;
private final Class<?>[] proxyInterfaces;
public SomeClass( Object someProxyInstance )
{
someProxy = someProxyInstance;
final Class<?> someProxyClass = someProxy.getClass();
if( Proxy.isProxyClass( someProxyClass ) )
{
handler = Proxy.getInvocationHandler( someProxy );
proxyInterfaces = someProxyClass.getInterfaces();
}
else
{
handler = null;
proxyInterfaces = null;
}
}
private void writeObject( ObjectOutputStream out )
throws IOException
{
out.defaultWriteObject();
}
private void readObject( ObjectInputStream in )
throws IOException, ClassNotFoundException
{
in.defaultReadObject();
if( null != m_handler && null != proxyInterfaces )
{
someProxy =
(Object)Proxy.newProxyInstance(
getClass().getClassLoader(),
proxyInterfaces,
handler );
}
}
}
However, this is a really bad solution. The only real solution is to allow
proxied classes to be properly serialized/deserialized like any other class.
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