This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
You can certainly inject EntityManager into your bean class and not bother with a DAO. The counter argument is that the DAO is still needed as it provides a single interface to the client by encapsulating data access logic.
If you will go with the DAO option ... your bean method will obtain an instance of the DAO class (possibly via a factory) and invoke the DAO method.
SCJP 1.4, SCWCD 1.3, SCBCD 1.3
I’ve looked at a lot of different solutions, and in my humble opinion Aspose is the way to go. Here’s the link: http://aspose.com