org.jboss.as.cli.handlers

Class CommandHandlerWithHelp

java.lang.Object

org.jboss.as.cli.handlers.CommandHandlerWithArguments

org.jboss.as.cli.handlers.CommandHandlerWithHelp

All Implemented Interfaces:

CommandHandler

Direct Known Subclasses:

ASModuleHandler, BaseOperationCommand, BatchClearHandler, BatchDiscardHandler, BatchEditLineHandler, BatchHandler, BatchHoldbackHandler, BatchListHandler, BatchMoveLineHandler, BatchRemoveLineHandler, CatchHandler, ClearScreenHandler, CommandCommandHandler, ConnectHandler, EchoDMRHandler, EchoVariableHandler, ElseHandler, EndIfHandler, EndTryHandler, FinallyHandler, HelpHandler, HistoryHandler, IfHandler, LsHandler, PatchHandler, PrefixHandler, PrintWorkingNodeHandler, QuitHandler, SetVariableHandler, TryHandler, UnsetVariableHandler

public abstract class CommandHandlerWithHelp
extends CommandHandlerWithArguments

Abstract handler that checks whether the argument is '--help', in which case it tries to locate file [cmd].txt and print its content. If the argument is absent or isn't '--help', it'll call doHandle(ctx) method.

Author:

Alexey Loubyansky

Field Summary

Fields

Modifier and Type	Field and Description
protected ArgumentWithoutValue	helpArg

Constructor Summary

Constructors

Constructor and Description
CommandHandlerWithHelp(String command)
CommandHandlerWithHelp(String command, boolean connectionRequired)

Method Summary

Modifier and Type	Method and Description
protected abstract void	doHandle(CommandContext ctx)
void	handle(CommandContext ctx) Executes the command.
boolean	isAvailable(CommandContext ctx) Checks whether the command is available in the current context (e.g.
boolean	isBatchMode(CommandContext ctx) Whether the command supports batch mode or not.
protected void	printHelp(CommandContext ctx)
protected void	printList(CommandContext ctx, Collection<String> list, boolean l) Prints a list of strings.

Methods inherited from class org.jboss.as.cli.handlers.CommandHandlerWithArguments

addArgument, getArgument, getArguments, hasArgument, hasArgument, recognizeArguments

Methods inherited from class java.lang.Object

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

Field Detail

helpArg

protected ArgumentWithoutValue helpArg

Constructor Detail

CommandHandlerWithHelp

public CommandHandlerWithHelp(String command)

CommandHandlerWithHelp

public CommandHandlerWithHelp(String command,
                              boolean connectionRequired)

Method Detail

isAvailable

public boolean isAvailable(CommandContext ctx)

Description copied from interface: CommandHandler

Checks whether the command is available in the current context (e.g. some commands require connection with the controller, some are available only in the batch mode, etc)

Parameters:

ctx - current context

Returns:

true if the command can be executed in the current context, false - otherwise.

handle

public void handle(CommandContext ctx)
            throws CommandLineException

Description copied from interface: CommandHandler

Executes the command.

Parameters:

ctx - current command context

Throws:

CommandLineException - if for any reason the command can't be properly handled the implementation must throw an instance of CommandLineException.

printHelp

protected void printHelp(CommandContext ctx)
                  throws CommandLineException

Throws:

CommandLineException

doHandle

protected abstract void doHandle(CommandContext ctx)
                          throws CommandLineException

Throws:

CommandLineException

isBatchMode

public boolean isBatchMode(CommandContext ctx)

Description copied from interface: CommandHandler

Whether the command supports batch mode or not. The result could depend on the context, e.g. it won't make sense to add 'some_command --help' to a batch.

Parameters:

ctx - the current context

Returns:

true if the command can be added to the batch, otherwise - false.

printList

protected void printList(CommandContext ctx,
                         Collection<String> list,
                         boolean l)

Prints a list of strings. If -l switch is present then the list is printed one item per line, otherwise the list is printed in columns.

Parameters:

ctx - the context

list - the list to print