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Class JavaGroups.JChannel

java.lang.Object
   |
   +----JavaGroups.Channel
           |
           +----JavaGroups.JChannel

public class JChannel

extends Channel

JChannel()

JChannel(Object)

BlockOk()

Called to acknowledge a Block (callback in MembershipListener or BlockEvent received from call to Receive).

Close()

Destroys the channel.

Connect(Object)

Connects the channel to a group.

Disconnect()

Disconnects the channel from the current group (if connected), leaving the group.

Down(Event)

finalize()

GetAllStates(long)

Retrieves the current group state.

GetGroupAddress()

Returns the group address of the group of which the channel is a member.

GetLocalAddress()

Returns the channel's own address.

GetOpt(int)

Gets an option.

GetState(long)

Retrieves the current group state.

GetView()

Gets the current view.

Peek(long)

Just peeks at the next message, view or block.

Receive(long)

Receives a message, a view change or a block event.

ReturnState(Serializable)

Called by the application is response to receiving a GetState object when calling Receive.

Send(Message)

Sends a message to a destination.

SetOpt(int, Object)

Sets an option.

Up(Event)

Called by the ProtocolStack when a message is received.

 public JChannel() throws ChannelException

 public JChannel(Object properties) throws ChannelException

 public synchronized void Connect(Object group_address) throws ChannelClosed

Connects the channel to a group.

Parameters:

group_address - A String denoting the group name.

Overrides:

Connect in class Channel

 public synchronized void Disconnect()

Disconnects the channel from the current group (if connected), leaving the group.

Overrides:

Disconnect in class Channel

 public synchronized void Close()

Destroys the channel. After this method has been called, the channel us unusable.

Overrides:

Close in class Channel

 public synchronized void finalize()

Overrides:

finalize in class Object

 public void Send(Message msg) throws ChannelNotConnected, ChannelClosed

Sends a message to a destination.

Overrides:

Send in class Channel

 public Object Receive(long timeout) throws ChannelNotConnected, ChannelClosed, Timeout

Receives a message, a view change or a block event.

Overrides:

Receive in class Channel

 public Object Peek(long timeout) throws ChannelNotConnected, ChannelClosed, Timeout

Just peeks at the next message, view or block. Does not install new view if view is received

Overrides:

Peek in class Channel

 public View GetView()

Gets the current view.

Overrides:

GetView in class Channel

 public Object GetLocalAddress()

Returns the channel's own address.

Overrides:

GetLocalAddress in class Channel

 public Object GetGroupAddress()

Returns the group address of the group of which the channel is a member.

Overrides:

GetGroupAddress in class Channel

 public void SetOpt(int option,
                    Object value)

Sets an option.

Overrides:

SetOpt in class Channel

 public Object GetOpt(int option)

Gets an option.

Overrides:

GetOpt in class Channel

 public void BlockOk()

Called to acknowledge a Block (callback in MembershipListener or BlockEvent received from call to Receive).

Overrides:

BlockOk in class Channel

 public boolean GetState(long timeout)

Retrieves the current group state. Sends GET_STATE event down to STATE_TRANSFER layer. Blocks until STATE_TRANSFER sends up a GET_STATE_OK event or until timeout milliseconds have elapsed. The argument of GET_STATE_OK should be a single object.

Overrides:

GetState in class Channel

 public boolean GetAllStates(long timeout)

Retrieves the current group state. Sends GET_STATE event down to STATE_TRANSFER layer. Blocks until STATE_TRANSFER sends up a GET_STATE_OK event or until timeout milliseconds have elapsed. The argument of GET_STATE_OK should be a vector of objects.

Overrides:

GetAllStates in class Channel

 public void ReturnState(Serializable state)

Called by the application is response to receiving a GetState object when calling Receive.

Overrides:

ReturnState in class Channel

 public void Up(Event evt)

Called by the ProtocolStack when a message is received. It will be added to the message queue from which subsequent Receives will dequeue it.

 public void Down(Event evt)

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