Interface RemoteRef
- All Superinterfaces:
Externalizable
,Serializable
- All Known Subinterfaces:
ServerRef
RemoteRef
represents the handle for a remote object. A
RemoteStub
uses a remote reference to carry out a
remote method invocation to a remote object.- Since:
- 1.1
- See Also:
-
Field Summary
Modifier and TypeFieldDescriptionstatic final String
Initialize the server package prefix: assumes that the implementation of server ref classes (e.g., UnicastRef, UnicastServerRef) are located in the package defined by the prefix.static final long
Deprecated. -
Method Summary
Modifier and TypeMethodDescriptionvoid
done
(RemoteCall call) Deprecated.1.2 style stubs no longer use this method.getRefClass
(ObjectOutput out) Returns the class name of the ref type to be serialized onto the stream 'out'.Invoke a method.void
invoke
(RemoteCall call) Deprecated.1.2 style stubs no longer use this method.newCall
(RemoteObject obj, Operation[] op, int opnum, long hash) Deprecated.1.2 style stubs no longer use this method.boolean
remoteEquals
(RemoteRef obj) Compares two remote objects for equality.int
Returns a hashcode for a remote object.Returns a String that represents the reference of this remote object.Methods inherited from interface java.io.Externalizable
readExternal, writeExternal
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Field Details
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serialVersionUID
Deprecated.AserialVersionUID
field in an interface is ineffectual. Do not use; no replacement.indicate compatibility with JDK 1.1.x version of class.- See Also:
-
packagePrefix
Initialize the server package prefix: assumes that the implementation of server ref classes (e.g., UnicastRef, UnicastServerRef) are located in the package defined by the prefix.- See Also:
-
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Method Details
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invoke
Invoke a method. This form of delegating method invocation to the reference allows the reference to take care of setting up the connection to the remote host, marshaling some representation for the method and parameters, then communicating the method invocation to the remote host. This method either returns the result of a method invocation on the remote object which resides on the remote host or throws a RemoteException if the call failed or an application-level exception if the remote invocation throws an exception.- Parameters:
obj
- the object that contains the RemoteRef (e.g., the RemoteStub for the object.method
- the method to be invokedparams
- the parameter listopnum
- a hash that may be used to represent the method- Returns:
- result of remote method invocation
- Throws:
Exception
- if any exception occurs during remote method invocation- Since:
- 1.2
-
newCall
@Deprecated RemoteCall newCall(RemoteObject obj, Operation[] op, int opnum, long hash) throws RemoteException Deprecated.1.2 style stubs no longer use this method. Instead of using a sequence of method calls on the stub's the remote reference (newCall
,invoke
, anddone
), a stub uses a single method,invoke(Remote, Method, Object[], int)
, on the remote reference to carry out parameter marshalling, remote method executing and unmarshalling of the return value.Creates an appropriate call object for a new remote method invocation on this object. Passing operation array and index, allows the stubs generator to assign the operation indexes and interpret them. The remote reference may need the operation to encode in the call.- Parameters:
obj
- remote stub through which to make callop
- array of stub operationsopnum
- operation numberhash
- stub/skeleton interface hash- Returns:
- call object representing remote call
- Throws:
RemoteException
- if failed to initiate new remote call- Since:
- 1.1
- See Also:
-
invoke
Deprecated.1.2 style stubs no longer use this method. Instead of using a sequence of method calls to the remote reference (newCall
,invoke
, anddone
), a stub uses a single method,invoke(Remote, Method, Object[], int)
, on the remote reference to carry out parameter marshalling, remote method executing and unmarshalling of the return value.Executes the remote call. Invoke will raise any "user" exceptions which should pass through and not be caught by the stub. If any exception is raised during the remote invocation, invoke should take care of cleaning up the connection before raising the "user" or remote exception.- Parameters:
call
- object representing remote call- Throws:
Exception
- if any exception occurs during remote method- Since:
- 1.1
- See Also:
-
done
Deprecated.1.2 style stubs no longer use this method. Instead of using a sequence of method calls to the remote reference (newCall
,invoke
, anddone
), a stub uses a single method,invoke(Remote, Method, Object[], int)
, on the remote reference to carry out parameter marshalling, remote method executing and unmarshalling of the return value.Allows the remote reference to clean up (or reuse) the connection. Done should only be called if the invoke returns successfully (non-exceptionally) to the stub.- Parameters:
call
- object representing remote call- Throws:
RemoteException
- if remote error occurs during call cleanup- Since:
- 1.1
- See Also:
-
getRefClass
Returns the class name of the ref type to be serialized onto the stream 'out'.- Parameters:
out
- the output stream to which the reference will be serialized- Returns:
- the class name (without package qualification) of the reference type
- Since:
- 1.1
-
remoteHashCode
int remoteHashCode()Returns a hashcode for a remote object. Two remote object stubs that refer to the same remote object will have the same hash code (in order to support remote objects as keys in hash tables).- Returns:
- remote object hashcode
- Since:
- 1.1
- See Also:
-
remoteEquals
Compares two remote objects for equality. Returns a boolean that indicates whether this remote object is equivalent to the specified Object. This method is used when a remote object is stored in a hashtable.- Parameters:
obj
- the Object to compare with- Returns:
- true if these Objects are equal; false otherwise.
- Since:
- 1.1
- See Also:
-
remoteToString
String remoteToString()Returns a String that represents the reference of this remote object.- Returns:
- string representing remote object reference
- Since:
- 1.1
-
serialVersionUID
field in an interface is ineffectual.