Re: Messaging Bean

Hi,
The use of Plain Vanilla Java Objects is very much justified in the scenario put forward by you.
There are many Factors that favour the use of POJO's over Session Bean ,Let me try and summarize them.
 
1) Since the operations stretch over a long period of time ,hence the use of EJB is not Justified at all 
as this will led to timeouts of EJB's.
 
My suugestion is to process these operations in a pure Java Only environmnet and not hosting them in EJB based environment.
 
 

	-----Original Message----- 
	From: Kalra, Ashwani [mailto:[email protected]] 
	Sent: Wed 17/12/2003 10:22 
	To: [email protected] 
	Cc: 
	Subject: Re: Messaging Bean
	
	
	you will not gain much on using session beans. Can you give more details on what you will be doing in the java classes? 
	Pooling and transaction is provided for MDBs also. if you are doing lot of CRUD operations, than use of Entity EJBs should improve scalability.
	 
	 
	/Regds
	Ashwani
	 
	 -----Original Message-----
	From: Sachin Tandon [mailto:[email protected]]
	Sent: Tuesday, December 16, 2003 9:59 PM
	To: [email protected]
	Subject: Messaging Bean
	
	

		Hi 

		 

		We are using Messaging Beans on our project. The message bean in turn will be calling different java classes for performing some actions.

		The java classes will be having business logic and will access the DB. We will process billions of records.

		 

		I wanted to decide on using EJBs against normal java classes in this scenario.

		 

		1)       Billions of rows of data to be processed

		2)       Lots of calculation involved in processing data

		3)       Weblogic clustering - need to load balance requests received by MDB across instances.

		 

		Any thoughts? What do we loose when we use normal java classes in this scenario as against using session beans

		 

		Thanks

		 

		 

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