The ConnectionRequestInfo interface enables a resource adapter to pass its own request specific data structure across the connection request flow. A resource adapter extends the empty interface to supports its own data structures for connection request.

A typical use allows a resource adapter to handle application component specified per-connection request properties (example - client ID, language). The application server passes these properties back across to match/createManagedConnection calls on the resource adapter. These properties remain opaque to the application server during the connection request flow.

Once the ConnectionRequestInfo reaches match/createManagedConnection methods on the ManagedConnectionFactory instance, resource adapter uses this additional per-request information to do connection creation and matching.