State Factories

Examples

Here are some examples of how state factories are used in the examples from this lesson and the Storing Objects in the Directory lesson.

• Reference example . Fruit is a Referenceable object. The service provider extracts its reference by using Referenceable.getReference() and stores the reference into the directory. No state factory is used.
• Attributes example . Drink is a DirContext object. The service provider extracts its attributes by using DirContext.getAttributes() and stores the attributes into the directory. No state factory is used.
• Serialization example . No state factory is used. The service provider serializes the java.awt.Button object and stores its serialized form into the directory.
• Remote reference example . The service provider stores the Reference in the directory. No state factory is used.
• Remote (JRMP) object example . A state factory (bundled with the service provider) turns the java.rmi.Remote object into a marshalled object, which is then stored by the service provider into the directory.
• Remote (IIOP) object example . A state factory (bundled with the service provider) turns the java.rmi.Remote object into a stringified CORBA object reference, which is then stored by the service provider into the directory.
• CORBA example . A state factory (bundled with the service provider) turns the CORBA object into a stringified CORBA object reference, which is then stored by the service provider in the directory.
• Custom object example . The state factory PersonStateFactory turns a Person object into a set of attributes, which is then stored by the service provider into the directory. PersonStateFactory is identified in the application resource file used by the client program (CustomObj).

The remainder of this section describes the state factory PersonStateFactory.

State Factories