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1 Reply Latest reply: Sep 1, 2013 12:30 PM by jschellSomeoneStoleMyAlias RSS

Java application layered architecture: DAO question.

f221afc3-58a0-4786-89ea-e36fefbd9936 Newbie
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Dear All,

 

I am working on a project which comprises a web site and some backend processes.

 

The program architecture is layered into following la

 

Layer 1. web frontend, backend processes

 

Layer 2. business logic (for web frontend only)

 

Layer 3. DAO

 

Layer 4. persistence layer

 

DAO is supposed to be a common module to handle all the data access logic for upper layers.

 

Maven is used for the project management. The dependencies are set via pom.xml.

 

Web frontend is deployed into JBoss, while backend processes is a standalone java application.

 

The question is "Should modules in Layer 1 and Layer 2 provide the database connections to DAO? Or let DAO do the database connection itself?"

 

Thanks,

George

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