javax.rmi.PortableRemoteObject
Server implementation objects may either inherit from javax.rmi.PortableRemoteObject or they may implement a remote interface and then use the exportObject method to register themselves as a server object. The toStub method takes a server implementation and returns a stub that can be used to access that server object. The connect method makes a Remote object ready for remote communication. The unexportObject method is used to deregister a server object, allowing it to become available for garbage collection. The narrow method takes an object reference or abstract interface type and attempts to narrow it to conform to the given interface. If the operation is successful the result will be an object of the specified type, otherwise an exception will be thrown.
Server implementation objects may either inherit from javax.rmi.PortableRemoteObject or they may implement a remote interface and then use the exportObject method to register themselves as a server object. The toStub method takes a server implementation and returns a stub that can be used to access that server object. The connect method makes a Remote object ready for remote communication. The unexportObject method is used to deregister a server object, allowing it to become available for garbage collection. The narrow method takes an object reference or abstract interface type and attempts to narrow it to conform to the given interface. If the operation is successful the result will be an object of the specified type, otherwise an exception will be thrown.
*connectclj
(*connect target source)Makes a Remote object ready for remote communication. This normally happens implicitly when the object is sent or received as an argument on a remote method call, but in some circumstances it is useful to perform this action by making an explicit call. See the Stub.connect(org.omg.CORBA.ORB) method for more information.
target - the object to connect. - java.rmi.Remote
source - a previously connected object. - java.rmi.Remote
throws: java.rmi.RemoteException - if source is not connected or if target is already connected to a different ORB than source.
Makes a Remote object ready for remote communication. This normally happens implicitly when the object is sent or received as an argument on a remote method call, but in some circumstances it is useful to perform this action by making an explicit call. See the Stub.connect(org.omg.CORBA.ORB) method for more information. target - the object to connect. - `java.rmi.Remote` source - a previously connected object. - `java.rmi.Remote` throws: java.rmi.RemoteException - if source is not connected or if target is already connected to a different ORB than source.
*export-objectclj
(*export-object obj)Makes a server object ready to receive remote calls. Note that subclasses of PortableRemoteObject do not need to call this method, as it is called by the constructor.
obj - the server object to export. - java.rmi.Remote
throws: java.rmi.RemoteException - if export fails.
Makes a server object ready to receive remote calls. Note that subclasses of PortableRemoteObject do not need to call this method, as it is called by the constructor. obj - the server object to export. - `java.rmi.Remote` throws: java.rmi.RemoteException - if export fails.
*narrowclj
(*narrow narrow-from narrow-to)Checks to ensure that an object of a remote or abstract interface type can be cast to a desired type.
narrow-from - the object to check. - java.lang.Object
narrow-to - the desired type. - java.lang.Class
returns: an object which can be cast to the desired type. - java.lang.Object
throws: java.lang.ClassCastException - if narrowFrom cannot be cast to narrowTo.
Checks to ensure that an object of a remote or abstract interface type can be cast to a desired type. narrow-from - the object to check. - `java.lang.Object` narrow-to - the desired type. - `java.lang.Class` returns: an object which can be cast to the desired type. - `java.lang.Object` throws: java.lang.ClassCastException - if narrowFrom cannot be cast to narrowTo.
*to-stubclj
(*to-stub obj)Returns a stub for the given server object.
obj - the server object for which a stub is required. Must either be a subclass of PortableRemoteObject or have been previously the target of a call to exportObject(java.rmi.Remote). - java.rmi.Remote
returns: the most derived stub for the object. - java.rmi.Remote
throws: java.rmi.NoSuchObjectException - if a stub cannot be located for the given server object.
Returns a stub for the given server object. obj - the server object for which a stub is required. Must either be a subclass of PortableRemoteObject or have been previously the target of a call to exportObject(java.rmi.Remote). - `java.rmi.Remote` returns: the most derived stub for the object. - `java.rmi.Remote` throws: java.rmi.NoSuchObjectException - if a stub cannot be located for the given server object.
*unexport-objectclj
(*unexport-object obj)Deregisters a server object from the runtime, allowing the object to become available for garbage collection.
obj - the object to unexport. - java.rmi.Remote
throws: java.rmi.NoSuchObjectException - if the remote object is not currently exported.
Deregisters a server object from the runtime, allowing the object to become available for garbage collection. obj - the object to unexport. - `java.rmi.Remote` throws: java.rmi.NoSuchObjectException - if the remote object is not currently exported.
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