Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
I have got a class which behaves as a center of API services. I need to use one of the services in this class to filter out the result from database query.
Is it a good practice for me to inject this service class into a ProjectDaoImpl class?
I am asking this because I have found some examples which only use the service at business logic level (eg ProjectLogicImpl) but not in DAO level.
No, it’s not a good practice. The service layer should depend on the DAO layer, but the reverse should not be true. But you may have a DAOHelperService object in the DAO layer that is injected in DAOs and in services. That wouldn’t break proper layering.