mandala.jacob.remote.gpf
Class AbstractSingletonRemoteProxy

java.lang.Object
  mandala.jacob.remote.AbstractRemote
      mandala.jacob.remote.AbstractLocalReferenceRetriever
          mandala.jacob.remote.gpf.AbstractSingletonRemoteProxy

All Implemented Interfaces:

LocalReferenceRetriever, Remote, java.io.Serializable

Direct Known Subclasses:

RemoteCollectionProxy, RemoteMapProxy

public abstract class AbstractSingletonRemoteProxy

extends AbstractLocalReferenceRetriever

Abstract base class for remote proxy with singleton implementation.

This class contains two fields:

• the client field which is used in subclasses to communicate whith a remote server;
• the exporter field which is used when an object must be exported.

The singleton pattern for remote instances is defined as follow:
if proxy(o) represents a remote proxy on the remote object o then,
proxy1(o1) == proxy2(o2) if and only if o1 == o2.

This class manages the singleton property. Any subclass must ensure that super.readResove() is invoked.

Since:

2.3

Version:

$Revision: 1.2 $

Author:

eipi

See Also:

Client, Exporter, AbstractRemoteProxy, Serialized Form

Field Summary

protected Client	client
protected Exporter	exporter

Fields inherited from class mandala.jacob.remote.AbstractRemote

defaultExceptionHandler, exceptionHandler, syslog

Method Summary

protected java.lang.Object	readResolve() Ensure singleton on deserialization.
java.lang.String	toString()

Methods inherited from class mandala.jacob.remote.AbstractLocalReferenceRetriever

finalize, getID, getLocalReference

Methods inherited from class mandala.jacob.remote.AbstractRemote

getDefaultExceptionHandler, getExceptionHandler, getSyslog, handleException, setDefaultExceptionHandler, setExceptionHandler, setSyslog

Methods inherited from class java.lang.Object

clone, equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface mandala.jacob.remote.Remote

getExceptionHandler, setExceptionHandler

Field Detail

client

protected final Client client

exporter

protected final Exporter exporter

Method Detail

readResolve

protected java.lang.Object readResolve()
                                throws java.io.ObjectStreamException

Ensure singleton on deserialization.

Subclasses may overwrite this method, but must call the one of this class to prevent memory leak!

Returns:

an Object value

Throws:

java.io.ObjectStreamException - if an error occurs

toString

public java.lang.String toString()

Overrides:

toString in class AbstractLocalReferenceRetriever