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comparing RMI and EJB

Sivaraman Lakshmanan
Ranch Hand

Joined: Aug 02, 2003
Posts: 231
hai all,
In RMI we call a Remote Method using our server programme and serve our client.why cannot the same be done in EJB. why do we need a Home interface to get an object for Remote interface. why can't it be done directly.
thanks
siva.
Amol Takate
Greenhorn

Joined: Sep 20, 2003
Posts: 15
What I know abt Home object is that :
Home Objects are introduced in EJB to have location transperency.
Home Objetcs are the factories of Remote objects, so that you can initialise a the beans in a different ways.
ahmad namini
Ranch Hand

Joined: Aug 29, 2002
Posts: 52
The EJB Home objects are not for location transparency, but rather a Factory for EJB Remote and Local Interfaces. This factory is implemented by the EJB container when returns the interface. The real beauty of the Home object is that the EJB container now controls the interception of client requests to the EJB and offers the client implicit middleware functionality (instance pooling, security, clustering, transactions, etc.)
So if choose not to use EJB's, you will need to provide all middleware services yourself. EJB's open standard and large vendor adoption makes it ideal for distributed systems.


-Ahmad<br />Sun Certified Java Developer (SCJD)<br />Sun Certified Java Programmer (SCJP)<p>"You got to be careful if you don't know where you're going, because you might not get there." -Yogi Berra
 
 
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