org.infinispan.notifications

Enum Listener.Observation

java.lang.Object

java.lang.Enum<Listener.Observation>

org.infinispan.notifications.Listener.Observation

All Implemented Interfaces:

Serializable, Comparable<Listener.Observation>

Enclosing class:

Listener

public static enum Listener.Observation
extends Enum<Listener.Observation>

Enumeration that defines when a listener event can be observed. A listener can receive an event before and/or after an operation has occurred. If the user wishes to be notified just before the operation completes the listener should observe using PRE level. If the user wishes to be notified only after the operation completes the listener should observe using POST level. If the user wishes to have an event before and after they should observe using BOTH level.

Enum Constant Summary

Enum Constants

Enum Constant and Description
BOTH Observation level used to be notified of an operation before and after it occurs
POST Observation level used to only be notified of an operation after it has completed
PRE Observation level used to only be notified of an operation before it completes

Method Summary

Modifier and Type	Method and Description
abstract boolean	shouldInvoke(boolean pre)
static Listener.Observation	valueOf(String name) Returns the enum constant of this type with the specified name.
static Listener.Observation[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

PRE

public static final Listener.Observation PRE

Observation level used to only be notified of an operation before it completes

POST

public static final Listener.Observation POST

Observation level used to only be notified of an operation after it has completed

BOTH

public static final Listener.Observation BOTH

Observation level used to be notified of an operation before and after it occurs

Method Detail

values

public static Listener.Observation[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Listener.Observation c : Listener.Observation.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Listener.Observation valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

shouldInvoke

public abstract boolean shouldInvoke(boolean pre)