Figure 1, Domain Model
The
ChatDispatcher handles the implementation specific to the chosen Instant Messaging
System, in this case, IBM/Lotus Sametime. For each chat initiated with the PA Bot, the
ChatDispatcher creates a new ChatMediator with the user as an ID. The ChatDispatcher
passes the appropriate text strings to the ChatMediator for processing and sends the resultant
text strings back to the user via the Instant Messaging System.
The
ChatMediator queries each object derived from CommandType to see if they can handle
the user string (also known as a request). The command that can handle the request without
error is given the request to process. If a command cannot be found to handle the request
without error then the ChatMediator will pass the request to the Command that gives an error.
If no command can handle the request then an error is returned.
Please
refer to the JavaDocs for more information.
