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Class prominence.msgx.GenericRegistryHandler

java.lang.Object
   |
   +----java.lang.Thread
           |
           +----prominence.msg.GenericHandler
                   |
                   +----prominence.msgx.GenericRegistryHandler

public class GenericRegistryHandler

extends GenericHandler

See Also:

GenericRegistryServer

GenericRegistryHandler(Hashtable, InputStream, OutputStream)

Creates a new GenericRegistryHandler with a specified routing table and communication channel to the client.

accept(String)

Attempts to register the client in the server routing table and informs the client of success.

announce(boolean)

Broadcasts when the client joins or leaves.

listUsers()

Sends the client a list of the existing clients.

  public GenericRegistryHandler(Hashtable routes,
                                InputStream i,
                                OutputStream o)

Creates a new GenericRegistryHandler with a specified routing table and communication channel to the client.

Parameters:

routes - The server routing table

i - An InputStream from the client

o - An OutputStream to the cleitn

  protected void accept(String name) throws IOException

Attempts to register the client in the server routing table and informs the client of success. If registered, announces the new client to existing clients, lists the existing clients to the new client andproceeds to route messages to and from the client.

Registers a QueueOutputStream in the routing table that writes messages for the client into the client's outbound message queue.

Parameters:

name - The client name

Throws: IOException

Occurs if a problem is encountered communicating with the client.

Overrides:

accept in class GenericHandler

See Also:

announce, listUsers, execute

  protected void announce(boolean isJoin) throws IOException

Broadcasts when the client joins or leaves.

Parameters:

isJoin - Indicates whether the client is joining (true) or leaving (false)

Throws: IOException

Should not occur.

  protected void listUsers() throws IOException

Sends the client a list of the existing clients.

Throws: IOException

Should not occur.

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