SystemResolver (CRaSH Doc API 1.3.1 API)

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org.crsh.shell.impl.command.system
Class SystemResolver

java.lang.Object
  org.crsh.shell.impl.command.system.SystemResolver

All Implemented Interfaces:: CommandResolver

public class SystemResolver

extends Object

implements CommandResolver

Author:: Julien Viet

Field Summary
`private static HashMap<String,Class<? extends BaseCommand>>`	`commands` .
`private static HashMap<String,String>`	`descriptions` .
`static SystemResolver`	`INSTANCE` .

Constructor Summary
`private`	`SystemResolver()`

Method Summary

private

<C extends BaseCommand>

            CommandResolution

createCommand(Class<C> commandClass)

Iterable<Map.Entry<String,String>> getDescriptions()

Command<?> resolveCommand(String name)
Attempt to obtain a command.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Field Detail

INSTANCE

public static final SystemResolver INSTANCE

commands

private static final HashMap<String,Class<? extends BaseCommand>> commands

descriptions

private static final HashMap<String,String> descriptions

Constructor Detail

SystemResolver

private SystemResolver()

Method Detail

getDescriptions

public Iterable<Map.Entry<String,String>> getDescriptions()

Specified by:: getDescriptions in interface CommandResolver

Returns:: the known command names by this resolver, the returned map keys are the command names and the values are the corresponding one line description of the command

resolveCommand

public Command<?> resolveCommand(String name)
                          throws CommandException,
                                 NullPointerException

Description copied from interface: CommandResolver

Attempt to obtain a command. Null is returned when such command does not exist.

Specified by:: resolveCommand in interface CommandResolver

Parameters:: name - the command name
Returns:: the command shell
Throws:: CommandException - if an error occured preventing the command creation; NullPointerException - if the name argument is null

createCommand

private <C extends BaseCommand> CommandResolution createCommand(Class<C> commandClass)
                                 throws CommandException

Throws:: CommandException