org.eclipse.ocl.examples.eventmanager.framework
Class ListenerTypeEnum

java.lang.Object
  org.eclipse.ocl.examples.eventmanager.framework.ListenerTypeEnum

public class ListenerTypeEnum
extends java.lang.Object

This class is used to describe the type of a listener. There are 4 supported listener types:

• PreChange listeners are notified before an atomic operation (like a JMI call) is executed. The preChange listener has the possibility to veto such an action. Side effects are not allowed
• PostChange listeners are notified after an atomic operation (like a JMI call) is executed. The postChange listener is allowed to perform side effects. Vetoes are not allowed.
• PreCommit listeners are notified after all atomic operations of a Command/Transaction have been executed successfully and before the Command/Transaction is committed. This type of listener may veto a command, but side effects to the repositry are not allowed.
• Commit listenres are notified when a command/transaction could be committed successfully. Of course, no veto is possible at this point of time. Side effects to the repository are allowed, but they will not be assigned to the current command/transaction.

These types can be combined if a listener wants to implement multiple roles.

Author:

Daniel Vocke (d044825)

Field Summary

static java.util.Collection<ListenerTypeEnum>	allListenerTypes
static ListenerTypeEnum	postChange
static ListenerTypeEnum	postCommit
static ListenerTypeEnum	preChange
static ListenerTypeEnum	preCommit

Constructor Summary

ListenerTypeEnum(ListenerTypeEnum... listenerTypes)

Method Summary

boolean	matches(ListenerTypeEnum other)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

preChange

public static final ListenerTypeEnum preChange

postChange

public static final ListenerTypeEnum postChange

preCommit

public static final ListenerTypeEnum preCommit

postCommit

public static final ListenerTypeEnum postCommit

allListenerTypes

public static final java.util.Collection<ListenerTypeEnum> allListenerTypes

Constructor Detail

ListenerTypeEnum

public ListenerTypeEnum(ListenerTypeEnum... listenerTypes)

Method Detail

matches

public boolean matches(ListenerTypeEnum other)

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object