Interface RemoteRef

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 invoked

  params - the parameter list

  opnum - 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, 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.
  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 call

  op - array of stub operations

  opnum - operation number

  hash - 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)

• 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, 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.
  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)

• 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, 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.
  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)

• 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