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java.rmi.server
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RemoteRef (Java 2 Platform SE 5.0) - JDK 5 Documentation v1.5.0, Java 2 SDK 英文文档
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JavaTM 2 Platform Standard Ed. 5.0 |
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java.rmi.server
Interface RemoteRef
- All Superinterfaces:
- Externalizable, Serializable
- All Known Subinterfaces:
- ServerRef
public interface RemoteRef
- extends Externalizable
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:
- JDK1.1
- See Also:
RemoteStub
| Field Summary | |
|---|---|
static String |
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. |
static long |
serialVersionUID
indicate compatibility with JDK 1.1.x version of class. |
| Method Summary | |
|---|---|
void |
done(RemoteCall call)
Deprecated. 1.2 style stubs no longer use this method. Instead of using a sequence of method calls to the remote reference ( newCall, invoke, and done), 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. |
String |
getRefClass(ObjectOutput out)
Returns the class name of the ref type to be serialized onto the stream 'out'. |
void |
invoke(RemoteCall call)
Deprecated. 1.2 style stubs no longer use this method. Instead of using a sequence of method calls to the remote reference ( newCall, invoke, and done), 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. |
Object |
invoke(Remote obj,
Method method,
Object[] params,
long opnum)
Invoke a method. |
RemoteCall |
newCall(RemoteObject obj,
Operation[] op,
int opnum,
long hash)
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, and done), 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. |
boolean |
remoteEquals(RemoteRef obj)
Compares two remote objects for equality. |
int |
remoteHashCode()
Returns a hashcode for a remote object. |
String |
remoteToString()
Returns a String that represents the reference of this remote object. |
| Methods inherited from interface java.io.Externalizable |
|---|
readExternal, writeExternal |
| Field Detail |
|---|
serialVersionUID
static final long serialVersionUID
- indicate compatibility with JDK 1.1.x version of class.
- See Also:
- Constant Field Values
packagePrefix
static final String 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:
- Constant Field Values
| Method Detail |
|---|
invoke
Object invoke(Remote obj, Method method, Object[] params, long opnum) throws Exception
- 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:
- JDK1.1
- See Also:
invoke(Remote,java.lang.reflect.Method,Object[],long)
- 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.
invoke
@Deprecated void invoke(RemoteCall call) throws Exception
- 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:
- JDK1.1
- See Also:
invoke(Remote,java.lang.reflect.Method,Object[],long)
- 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.
done
@Deprecated void done(RemoteCall call) throws RemoteException
- 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:
- JDK1.1
- See Also:
invoke(Remote,java.lang.reflect.Method,Object[],long)
- 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.
getRefClass
String getRefClass(ObjectOutput out)
- 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:
- JDK1.1
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:
- JDK1.1
- See Also:
Hashtable
remoteEquals
boolean remoteEquals(RemoteRef obj)
- 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:
- JDK1.1
- See Also:
Hashtable
remoteToString
String remoteToString()
- Returns a String that represents the reference of this remote
object.
- Returns:
- string representing remote object reference
- Since:
- JDK1.1
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JavaTM 2 Platform Standard Ed. 5.0 |
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Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright 2004 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.