Package org.apache.commons.daemon.support

Class DaemonLoader

java.lang.Object

org.apache.commons.daemon.support.DaemonLoader

public final class DaemonLoader
extends Object

Used by jsvc for Daemon management.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DaemonLoader.Context	A concrete DaemonContext that acts as a simple value container.
static class	DaemonLoader.Controller	A DaemonController that acts on the the global DaemonLoader state.

Field Summary

Fields

Modifier and Type	Field	Description
private static DaemonLoader.Controller	controller
private static Object	daemon
private static Method	destroy
private static Method	init
private static Method	signal
private static Method	start
private static Method	stop

Constructor Summary

Constructors

Constructor	Description
DaemonLoader()

Method Summary

Modifier and Type	Method	Description
static boolean	check(String className)	Checks whether the given class name can be instantiated with a zero-argument constructor.
static boolean	destroy()	Invokes the wrapped destroy method.
private static void	failed(String message)
static boolean	load(String className, String[] args)	Loads the given class by name, initializing wrapper methods.
private static void	shutdown(boolean reload)
static boolean	signal()	Invokes the wrapped signal method.
static boolean	start()	Invokes the wrapped start method.
static boolean	stop()	Invokes the wrapped stop method.
static void	version()	Prints version information to System.err.

Methods inherited from class java.lang.Object

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

Field Details

controller

private static DaemonLoader.Controller controller

daemon

private static Object daemon

init

private static Method init

start

private static Method start

stop

private static Method stop

destroy

private static Method destroy

signal

private static Method signal

Constructor Details

DaemonLoader

public DaemonLoader()

Method Details

version

public static void version()

Prints version information to System.err.

check

public static boolean check(String className)

Checks whether the given class name can be instantiated with a zero-argument constructor.

Parameters:

className - The class name.

Returns:

true if the given class name can be instantiated, false otherwise.

signal

public static boolean signal()

Invokes the wrapped signal method.

Returns:

whether the call succeeded.

load

public static boolean load(String className,
 String[] args)

Loads the given class by name, initializing wrapper methods.

Parameters:

className - The class name to load.

args - arguments for the context.

Returns:

whether the operation succeeded.

start

public static boolean start()

Invokes the wrapped start method.

Returns:

whether the call succeeded.

stop

public static boolean stop()

Invokes the wrapped stop method.

Returns:

whether the call succeeded.

destroy

public static boolean destroy()

Invokes the wrapped destroy method.

Returns:

whether the call succeeded.

shutdown

private static void shutdown(boolean reload)

failed

private static void failed(String message)