Hello all,
I have a question concerning basic design issues with EJB and the JSP presentation layer. Currently, I have designed a system using all local component interfaces of EJB 2.0. I currently have the following architecture in place: EJB --> Servlets (WebWork Actions) --> JSP I'm utilizing the session facade design pattern where the business logic in encapsulated in session beans, which internally access the entity beans, etc. However, I am doing something of the following: sessionBean.getUserAccounts() which returns a Collection of actual UserAcountLocal's. I then am passing this collection off to the JSP just to cycle through each entity bean and display the data via its getXXX() methods. No modifications to the entity beans are being done directly in the Actions/JSPs, rather they are modified through methods of the session beans. Now I know that there is the concept of DTO (Data transfer objects), which send the data from the particular entity bean to a regular java bean for presentation. I know that DTO's increase performance if one is using remote interfaces, because there is less network traffic that occurs via that transport method. However, I know that WebLogic performs excellent caching of entity beans, so that multiple invocations of get() methods on entity beans will not make a trip to the database each and every time the get() method is called. So, my question is: Is it "safe" to continue with the current way I am designing/coding the system? I just find it a bit tedious to create value objects for each and every entity bean, if I know that I will not be calling setXXX() methods from within the presentation layer. Also, with EJB 2.0 and the introduction of local component interfaces, it seems that issues regarding limiting the amount of network traffic don't seem to be so relevant. Any suggestions/tips are appreciated. :-) Best regards, Ryan LeCompte [EMAIL PROTECTED] http://www.louisiana.edu/~rml7669 =========================================================================== To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff EJB-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
