Spring Annotation Usage

[pradeepkumar arunagiri]

Hi,

I am using Spring 3.0 in my project. My project architecture is something like this.

Controller -> delegate -> Service -> DAO -> Adapter layer.

My question is. I am using annotation. So

Controller -> @Controller
Delegate -> ?
Service -> @Service
DAO -> @Repository @Transactional
Adapter -> ?

Delegate will be injected to Controller. Service will be injected to Delegate. DAO will be injected to Service. Adapter will be injected to DAO. Thats how DI works in my project.

I am not sure what annotation i have to use in Adapter and Delegate layer. Also can somebody tell me whether the annotation tag that i am using in each layer is correct or not?

Thanks,
Pradeep

[dr_pompeii]

Hello

Normally I use

Controller -> @Controller
Service -> @Service + @Transactional
DAO -> @Repository + @Transactional

Delegate will be injected to Controller. Service will be injected to Delegate.

could you post your code about that?, I want to see what does your Delegate than a Service cant does

Adapter will be injected to DAO.

Like my previous request

is really important and mandatory that @Transactional annotation be in the Service and dao layer to let Spring has and handle the transaction control through both layers

I am not sure what annotation i have to use in Adapter and Delegate layer.

There are no exists an annotation for these two layers, if is mandatory for your application, you can use the @Component annotation

Also can somebody tell me whether the annotation tag that i am using in each layer is correct or not?

The rest is OK, just recall my comment about the @Transactional annotation

[rohan123]

Hey Pradeep,

Spring already providing @Component annotation so you can use @Component, otherwise make your own annotation by inheriting @Component for ur desired layer. But i must agree with Manuel that his suggest approach is right for standard application.