Package org.jgroups

Provides top-level public JGroups classes such as Channel, Message, etc.

Interface Summary

Interface	Description
Address	Address identifies cluster member.
ChannelListener	Allows a listener to be notified when an important channel lifecycle event occurs.
Constructable<T>	Interface returning a supplier which can be called to create an instance
Lifecycle	Interface that defines lifecycle methods.
Message	A Message is used to send data to members of a group.
MessageFactory
PhysicalAddress	Represents a physical (as opposed to logical) address
Receiver	Defines the callbacks that are invoked when messages, views etc are received
Refcountable<T>	Provides ref-counting for messages (https://issues.redhat.com/browse/JGRP-2417).
UpHandler	Provides a hook to hijack all events received by a certain channel which has installed this UpHandler.

Class Summary

Class	Description
BaseMessage	A common superclass for all Message implementations.
BatchMessage	A message that contains a batch of messages for use with BATCH protocol.
BytesMessage	A Message containing a byte array as payload.
CompositeMessage	A message composed of multiple messages.
DefaultMessageFactory	Default implementation of MessageFactory.
EmptyMessage	A Message without a payload; optimized for sending only headers (e.g.
Event	Event is a JGroups internal class used for inter-stack and intra-stack communication.
FragmentedMessage	A message which refers to another message, but only marshals (Streamable.writeTo(DataOutput)) a part of the original message, starting at a given BytesMessage.offset and marshalling only BytesMessage.length bytes.
Global	Global is a JGroups internal class defining global variables.
Header	Header is a JGroups internal base class for all JGroups headers.
JChannel	A channel represents a group communication endpoint (like a socket).
JChannelProbeHandler
JChannelProbeHandler.ThreadEntry
LongMessage	Message with a long as payload.
Membership	Represents a membership of a cluster group.
MergeView	A view that is sent as a result of a cluster merge.
NioMessage	A Message with a (heap-based or direct) ByteBuffer as payload. Note that the payload of an NioMessage must not be modified after sending it (ie.
NullAddress
ObjectMessage	A Message with an object as payload.
RefcountedBytesMessage	Ref-counted message implementation. Note that this class is experimental and may get removed without notice.
RefcountedNioMessage	Ref-counted message implementation. Note that this class is experimental and may get removed without notice.
Version	We're using the scheme described at http://www.jboss.com/index.html?module=bb&op=viewtopic&t=77231 for major, minor and micro version numbers.
View	A view is a local representation of the current membership of a group.
ViewId	ViewIds are used for ordering views (each view has a ViewId and a list of members).

Enum Summary

Enum	Description
JChannel.State
Message.Flag
Message.TransientFlag

Exception Summary

Exception	Description
StateTransferException	StateTransferException is thrown to indicate a failure of a state transfer between cluster members.
SuspectedException	Thrown if a message is sent to a suspected member.
UnreachableException	Thrown if member in different site cannot be contacted; used by RELAY2