com.groiss.event
Class EventManager

java.lang.Object
  com.groiss.event.EventManager

public class EventManager
extends java.lang.Object

The event-manager allows registrating for events, unregistrating, and raising events.

Field Summary

static int	CURRENT_TX execute event in current transaction
static int	NEW_TX reserved for future use, execute event in a new transaction (not yet implemented)

Constructor Summary

EventManager()

Method Summary

static void	raiseEvent(Event e) Raises an event.
static long	register(java.lang.String name, java.lang.Class<? extends IEventHandler> eh, java.lang.Object context) Register an event handler
static long	register(java.lang.String name, java.lang.Class<? extends IEventHandler> eh, java.lang.Object context, ActivityInstance registrant) Register an event handler
static void	unregister(long oid) unregister an event handler
static void	unregister(java.lang.String name, ProcessInstance registrant) Unregister all event handler for the named event.
static void	unregisterAll(ActivityInstance registrant)
static void	unregisterAll(ProcessInstance registrant) unregister all event handlers of a process

Methods inherited from class java.lang.Object

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

Field Detail

CURRENT_TX

public static final int CURRENT_TX

execute event in current transaction

See Also:

Constant Field Values

NEW_TX

public static final int NEW_TX

reserved for future use, execute event in a new transaction (not yet implemented)

See Also:

Constant Field Values

Constructor Detail

EventManager

public EventManager()

Method Detail

raiseEvent

public static void raiseEvent(Event e)

Raises an event.

Parameters:

e - the event

register

public static long register(java.lang.String name,
                            java.lang.Class<? extends IEventHandler> eh,
                            java.lang.Object context)

Register an event handler

Parameters:

name - the name of the event

eh - the class of the eventhandler, must be a subclass of EventHandler

context - a context object

Returns:

the unique oid of this registration (use for unregister)

register

public static long register(java.lang.String name,
                            java.lang.Class<? extends IEventHandler> eh,
                            java.lang.Object context,
                            ActivityInstance registrant)

Register an event handler

Parameters:

name - the name of the event

eh - the class of the eventhandler, must be a subclass of EventHandler

context - a context object

registrant - an activity of te registering process instance, or the process instance itself

Returns:

the unique oid of this registration (use for unregister)

unregister

public static void unregister(long oid)

unregister an event handler

unregister

public static void unregister(java.lang.String name,
                              ProcessInstance registrant)
                       throws java.lang.Exception

Unregister all event handler for the named event.

Parameters:

name - the event name

registrant - the process which registered

Throws:

java.lang.Exception

unregisterAll

public static void unregisterAll(ProcessInstance registrant)

unregister all event handlers of a process

unregisterAll

public static void unregisterAll(ActivityInstance registrant)