A Channel object is returned by any call to Session.getChannel().

An Event object is returned by any call to Nirvana.createEvent().

An EventAttributes object is returned by any call to Event.getEventAttributes().

An EventDictionary object is returned by any call to Event.getDictionary() or Nirvana.createDictionary().

Nirvana is the API namespace which provides a number of static methods and properties for creating Universal Messaging Sessions, Events, and EventDictionaries along with definitions of constants used throughout.

Nirvana.Utils provides access to a number of utility methods.

A Queue object is returned by any call to Session.getQueue() when the optional second Queue, isTransactionalReader, is either not supplied or is false.

A Session object is returned by a call to Nirvana.createSession().

A Transaction object is returned by any call to Channel.createTransaction().

A TransactionalQueue object is returned by any call to Session.getQueue() when the optional second parameter, isTransactionalReader, is true.