org.apache.activemq.broker.region
Interfaces 
Destination
DestinationInterceptor
LockOwner
MessageReference
MessageReferenceFilter
QueueMessageReference
Region
Subscription
SubscriptionRecovery
Classes 
AbstractRegion
AbstractSubscription
AbstractTempRegion
BaseDestination
CompositeDestinationInterceptor
ConnectionStatistics
ConnectorStatistics
DestinationFactory
DestinationFactoryImpl
DestinationFilter
DestinationStatistics
DurableTopicSubscription
IndirectMessageReference
PrefetchSubscription
Queue
QueueBrowserSubscription
QueueDispatchSelector
QueueRegion
QueueSubscription
RegionBroker
TempQueue
TempQueueRegion
TempTopic
TempTopicRegion
Topic
TopicRegion
TopicSubscription