Package com.oracle.coherence.concurrent.executor.internal

Class LiveObjectEventInterceptor

java.lang.Object

com.oracle.coherence.concurrent.executor.internal.LiveObjectEventInterceptor

All Implemented Interfaces:

EventDispatcherAwareInterceptor, EventInterceptor, MemberListener, EventListener

public class LiveObjectEventInterceptor
extends Object
implements EventDispatcherAwareInterceptor, MemberListener

The LiveObjectEventInterceptor is the EventInterceptor that forwards Events to objects implements LiveObject.

IMPORTANT: The delegation of events will occur on Coherence Service threads. It is up to the LiveObject implementations to ensure that appropriate processing occurs on non-Coherence-Service threads to prevent deadlock from occurring.

Author:

bo, lh

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	LiveObjectEventInterceptor.ExpiredProcessor	An InvocableMap.EntryProcessor to notify a Leased that it has expired.
static class	LiveObjectEventInterceptor.MemberAwareProcessor	An InvocableMap.EntryProcessor to notify a ClusterMemberAware of a MemberEvent.

Field Summary

Fields

Modifier and Type	Field	Description
protected ContinuationService<Object>	f_continuationService	A ContinuationService for tracking, composing and executing ComposableContinuations.
protected ScheduledExecutorService	f_executorService	An ExecutorService on which to perform background operations.
protected ConcurrentHashMap<Object,Long>	f_mapLeaseExpiryTimes	A map of keys for Leased cache entry values and their lease expiry times.
protected ConcurrentHashMap<UID,Set<Object>>	f_mapMemberAwareObjects	A map of keys for ClusterMemberAware cache entry values.
static long	LEASE_INSPECTION_DELAY_MS	The delay in milliseconds between successive attempts to inspect the expiry of local Leased objects.
protected CacheService	m_cacheService	The CacheService to which the EventInterceptor has been associated.

Constructor Summary

Constructors

Constructor	Description
LiveObjectEventInterceptor()	Constructs a LiveObjectEventInterceptor.

Method Summary

Modifier and Type	Method	Description
CacheService	getCacheService()	Gets the cache service with which this interceptor has been registered.
void	introduceEventDispatcher(String sIdentifier, EventDispatcher dispatcher)
protected boolean	isDecorationRemoved(BinaryEntry binEntry, int nDecorationId)	Determines whether the given decoration has been removed from the event's new value, i.e., the decoration exists on the old value but not on the new.
void	memberJoined(MemberEvent memberEvent)
void	memberLeaving(MemberEvent memberEvent)
void	memberLeft(MemberEvent memberEvent)
void	onEvent(Event event)
protected void	processEntry(Event event, BinaryEntry binaryEntry, Cause cause)	Process an BinaryEntry from an interceptor event.

Methods inherited from class java.lang.Object

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

Field Detail

LEASE_INSPECTION_DELAY_MS

public static long LEASE_INSPECTION_DELAY_MS

The delay in milliseconds between successive attempts to inspect the expiry of local Leased objects.

m_cacheService

protected CacheService m_cacheService

The CacheService to which the EventInterceptor has been associated.

f_executorService

protected final ScheduledExecutorService f_executorService

An ExecutorService on which to perform background operations.

f_continuationService

protected final ContinuationService<Object> f_continuationService

A ContinuationService for tracking, composing and executing ComposableContinuations.

f_mapLeaseExpiryTimes

protected final ConcurrentHashMap<Object,Long> f_mapLeaseExpiryTimes

A map of keys for Leased cache entry values and their lease expiry times.

f_mapMemberAwareObjects

protected final ConcurrentHashMap<UID,Set<Object>> f_mapMemberAwareObjects

A map of keys for ClusterMemberAware cache entry values.

Constructor Detail

LiveObjectEventInterceptor

public LiveObjectEventInterceptor()

Constructs a LiveObjectEventInterceptor.

Method Detail

onEvent

public void onEvent(Event event)

Specified by:

onEvent in interface EventInterceptor

introduceEventDispatcher

public void introduceEventDispatcher(String sIdentifier,
                                     EventDispatcher dispatcher)

Specified by:

introduceEventDispatcher in interface EventDispatcherAwareInterceptor

getCacheService

public CacheService getCacheService()

Gets the cache service with which this interceptor has been registered.

Returns:

the CacheService

processEntry

protected void processEntry(Event event,
                            BinaryEntry binaryEntry,
                            Cause cause)

Process an BinaryEntry from an interceptor event.

Parameters:

event - the Event

binaryEntry - the BinaryEntry

cause - the cause for the Event

isDecorationRemoved

protected boolean isDecorationRemoved(BinaryEntry binEntry,
                                      int nDecorationId)

Determines whether the given decoration has been removed from the event's new value, i.e., the decoration exists on the old value but not on the new.

Parameters:

binEntry - the BinaryEntry

nDecorationId - the decoration

Returns:

true if the decoration has been removed for the new value

memberJoined

public void memberJoined(MemberEvent memberEvent)

Specified by:

memberJoined in interface MemberListener

memberLeaving

public void memberLeaving(MemberEvent memberEvent)

Specified by:

memberLeaving in interface MemberListener

memberLeft

public void memberLeft(MemberEvent memberEvent)

Specified by:

memberLeft in interface MemberListener