org.crsh.shell.impl.command
Class CRaSH

java.lang.Object
  org.crsh.shell.impl.command.CRaSH

public class CRaSH
extends Object

Field Summary

(package private) HashMap<String,CommandManager>	activeManagers .
private Map<String,TimestampedObject<CommandResolution>>	commandCache .
(package private) PluginContext	context .
private static HashMap<String,Class<? extends BaseCommand>>	systemCommands .

Constructor Summary

CRaSH(PluginContext context)
Create a new CRaSH.

Method Summary

private <C extends BaseCommand> CommandResolution	createCommand(Class<C> commandClass)
CRaSHSession	createSession(Principal user)
ShellCommand<?>	getCommand(String name) Attempt to obtain a command instance.
String	getCommandDescription(String name) Attempt to obtain a command description.
Iterable<String>	getCommandNames()
PluginContext	getContext() Returns the plugin context.
private CommandResolution	resolveCommand(CommandManager manager, String name, Resource script)
CommandResolution	resolveCommand(String name) Attempt to obtain a command instance.

Methods inherited from class java.lang.Object

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

Field Detail

systemCommands

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

.

context

final PluginContext context

.

activeManagers

final HashMap<String,CommandManager> activeManagers

.

commandCache

private final Map<String,TimestampedObject<CommandResolution>> commandCache

.

Constructor Detail

CRaSH

public CRaSH(PluginContext context)
      throws NullPointerException

Create a new CRaSH.

Parameters:

context - the plugin context

Throws:

NullPointerException - if the context argument is null

Method Detail

createSession

public CRaSHSession createSession(Principal user)

getContext

public PluginContext getContext()

Returns the plugin context.

Returns:

the plugin context

getCommandDescription

public String getCommandDescription(String name)
                             throws CommandCreationException,
                                    NullPointerException

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

Parameters:

name - the command name

Returns:

a command description

Throws:

CommandCreationException - if an error occured preventing the command creation

NullPointerException - if the name argument is null

getCommand

public ShellCommand<?> getCommand(String name)
                           throws CommandCreationException,
                                  NullPointerException

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

Parameters:

name - the command name

Returns:

a command instance

Throws:

CommandCreationException - if an error occured preventing the command creation

NullPointerException - if the name argument is null

resolveCommand

public CommandResolution resolveCommand(String name)
                                 throws CommandCreationException,
                                        NullPointerException

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

Parameters:

name - the command name

Returns:

a command instance

Throws:

CommandCreationException - if an error occured preventing the command creation

NullPointerException - if the name argument is null

getCommandNames

public Iterable<String> getCommandNames()

resolveCommand

private CommandResolution resolveCommand(CommandManager manager,
                                         String name,
                                         Resource script)
                                  throws CommandCreationException

Throws:

CommandCreationException

createCommand

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