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java.rmi.server

Class RemoteObjectInvocationHandler

Implemented Interfaces:
InvocationHandler, Remote, Serializable
public class RemoteObjectInvocationHandler
extends RemoteObject
implements InvocationHandler, Remote, Serializable
Together with dynamic proxy instance, this class replaces the generated RMI stub (*_Stub) classes that (following 1.5 specification) should be no longer required. It is unusual to use the instances of this class directly in the user program. Such instances are automatically created and returned by Registry or UnicastRemoteObject methods if the remote reference is known but the corresponding stub class is not accessible.
See Also:
Registry.lookup(String), Serialized Form

Field Summary

Fields inherited from class java.rmi.server.RemoteObject

ref

Constructor Summary

RemoteObjectInvocationHandler(RemoteRef reference)
Construct the remote invocation handler that forwards calls to the given remote object.

Method Summary

Object
invoke(Object proxyInstance, Method method, Object[] parameters)
Invoke the remote method.

Methods inherited from class java.rmi.server.RemoteObject

equals, getRef, hashCode, toString, toStub

Methods inherited from class java.lang.Object

clone, equals, extends Object> getClass, finalize, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

RemoteObjectInvocationHandler

public RemoteObjectInvocationHandler(RemoteRef reference)
Construct the remote invocation handler that forwards calls to the given remote object.
Parameters:
reference - the reference to the remote object where the method calls should be forwarded.

Method Details

invoke

public Object invoke(Object proxyInstance,
                     Method method,
                     Object[] parameters)
            throws Throwable
Invoke the remote method. When the known method is invoked on a created RMI stub proxy class, the call is delivered to this method and then transferred to the RemoteRef.invoke(Remote,Method,Object[],long) of the remote reference that was passed in constructor. The methods are handled as following:
  • The toString() method is delegated to the passed proxy instance.
  • The .equals method only returns true if the passed object is an instance of proxy class and its invocation handler is equal to this invocation handles.
  • The .hashCode returns the hashCode of this invocation handler (if the.
  • All other methods are converted to remote calls and forwarded to the remote reference.
Specified by:
invoke in interface InvocationHandler
Parameters:
proxyInstance - the instance of the proxy stub
method - the method being invoked
parameters - the method parameters
Returns:
the method return value, returned by RemoteRef.invoke
Throws:
Throwable - that is thrown by remote call, if that exception is listend in the throws clause of the method being called.
RemoteObjectInvocationHandler.java -- RMI stub replacement. Copyright (C) 2005 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version. GNU Classpath 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 General Public License for more details. You should have received a copy of the GNU General Public License along with GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version.

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