stella.rmi
Class GenericAccess

java.lang.Object
  util.CommandLineParser
      stella.rmi.GenericAccess

Direct Known Subclasses:

BuildingAccess, CalibrationAccess, CcdAccess, DomeAccess, GuiderAccess, TelescopeAccess, WifsipAccess

public class GenericAccess
extends CommandLineParser

A small class allowing command-line controled access to rmi-object implementing the ListenerControlling interface. In the basic functionality, only the methods in ListenerControlling are supported, but subclasses should augment the functionality to acces a wider variety of methods, like BuildingAccess. Due to the use of a CommandLineParser the sequence of the arguments and switches is arbitrary.

See Also:

CommandLineParser

Nested Class Summary

Nested classes/interfaces inherited from class util.CommandLineParser

CommandLineParser.Test

Field Summary

static String	FOOT A footer usage message.
static String	ONESWITCHES The zero-argument command line switches understood.
static Map<String,String>	USE A human-readable description of the switches.
static String	ZEROSWITCHES The zero-argument command line switches understood.

Constructor Summary

GenericAccess()
Constructs a new listener shifter.

Method Summary

static void	main(String[] arg) Register and/or deregisters a listener from a given caster.
boolean	processFor(Class me) Processes the command line arguments after parsing.
protected boolean	processSwitches(Remote listener) Process the command line switches found.
protected static Remote	scanFor(Class instance) Scans the local registry for bindings of the approriate type.

Methods inherited from class util.CommandLineParser

getArguments, getCommandLine, getCommands, getRegisteredSwitches, hasAnySwitch, hasSwitch, hasSwitch, haveAllSwitches, parse, printCommandLine, registerLine, registerSwitches, setCommands, staticUsage, usage

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

ZEROSWITCHES

public static final String ZEROSWITCHES

The zero-argument command line switches understood.

See Also:

Constant Field Values

ONESWITCHES

public static final String ONESWITCHES

The zero-argument command line switches understood.

See Also:

Constant Field Values

USE

public static Map<String,String> USE

A human-readable description of the switches.

FOOT

public static final String FOOT

A footer usage message.

See Also:

Constant Field Values

Constructor Detail

GenericAccess

public GenericAccess()

Constructs a new listener shifter. The switches understood are readily added to the command line parser.

Method Detail

processFor

public boolean processFor(Class me)
                   throws RemoteException,
                          NotBoundException,
                          MalformedURLException

Processes the command line arguments after parsing. The argument is the instance on which we should act if no explicit link to the command line is given

Returns:

True on success.

Throws:

RemoteException

NotBoundException

MalformedURLException

scanFor

protected static Remote scanFor(Class instance)
                         throws RemoteException,
                                NotBoundException

Scans the local registry for bindings of the approriate type.

Throws:

RemoteException

NotBoundException

processSwitches

protected boolean processSwitches(Remote listener)
                           throws RemoteException

Process the command line switches found. If the remote reference handed over is a ListenerControlling and one of the switches defined in ONESWITCHES is given, the appropriate method of the listener control is called. Note that the command line must be parsed before calling this method.
Implementation note: If both processable arguments, -r and -d are given, the deregistering at the caster is processed first.

Returns:

True on success.

Throws:

RemoteException

main

public static void main(String[] arg)
                 throws ParseException,
                        RemoteException,
                        NotBoundException,
                        MalformedURLException

Register and/or deregisters a listener from a given caster. The order of the listener and the switches is not strict.

Throws:

ParseException

RemoteException

NotBoundException

MalformedURLException