GigaSpaces XAP 9.7.2 API

net.jini.export
Interface Exporter

All Known Implementing Classes:
ActivationExporter, IiopExporter, ProxyTrustExporter

public interface Exporter

An abstraction for exporting a single remote object such that it can receive remote method invocations, and later for unexporting that same remote object.

Details of the export and unexport behavior, including the communication protocols used for remote invocation and additional remote invocation semantics, are defined by the particular implementation of this interface.

Since:
2.0
Author:
Sun Microsystems, Inc.

Method Summary
 Remote export(Remote impl)
          Exports the specified remote object and returns a proxy that can be used to invoke remote methods on the exported remote object.
 boolean unexport(boolean force)
          Unexports the remote object that was exported by this Exporter such that it will no longer receive remote method invocations that were made possible as a result of exporting it with this Exporter.
 

Method Detail

export

Remote export(Remote impl)
              throws ExportException
Exports the specified remote object and returns a proxy that can be used to invoke remote methods on the exported remote object. This method must only be invoked once on a given Exporter instance.

The returned proxy implements an implementation-specific set of remote interfaces of the remote object and may also implement additional implementation-specific interfaces.

A remote interface is an interface that extends the interface java.rmi.Remote and whose methods each declare at least one exception whose type is java.rmi.RemoteException or one of its superclasses.

Parameters:
impl - a remote object to export
Returns:
a proxy for the remote object
Throws:
ExportException - if a problem occurs exporting the object
SecurityException - if a SecurityException occurs exporting the object
NullPointerException - if impl is null
IllegalStateException - if an object has already been exported with this Exporter instance

unexport

boolean unexport(boolean force)
Unexports the remote object that was exported by this Exporter such that it will no longer receive remote method invocations that were made possible as a result of exporting it with this Exporter. The unexport operation may not occur if the force argument is false. This method must only be invoked after the export method has been invoked on this Exporter instance to export a remote object successfully.

This method returns true if upon return, the remote object is no longer exported with this Exporter, and false if the remote object remains exported with this Exporter. This method will always return true if it has returned true previously.

The force parameter serves to indicate whether or not the caller desires the unexport to occur even if there are known remote calls pending or in progress to the remote object that were made possible by this Exporter:

If the remote object is unexported as a result of this method, then the implementation may (and should, if possible) prevent remote calls in progress from being able to communicate their results successfully.

Parameters:
force - if true, the remote object will be unexported even if there are remote calls pending or in progress; if false, the remote object may only be unexported if there are no known remote calls pending or in progress
Returns:
true if the remote object is unexported when this method returns and false otherwise
Throws:
IllegalStateException - if an object has not been exported with this Exporter instance

GigaSpaces XAP 9.7.2 API

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