Name
Message Handler Pattern
Goal
Decouple the code responsible for the processing of messages from the code responsible for receiving messages. Provide a simpler framework for testing message-handling code.
Participants
- Message client
Responsible for receiving messages from a messaging server.
- Message handler
Responsible for processing individual messages after they have been received.
Interactions
The message client is responsible for retrieving messages from a transport mechanism, via JavaMail, JMS, or other technologies. Once a message is received, it is handed off to a separate message handler object, which is responsible for processing the message content.
Notes
The message handler design is a building block for more complex client designs.
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