1. Java EE: Where could I read about dao, services and why they're used? stackoverflow.comOk I'm new at my job, and now I'm assigned to a project which uses Spring, Hibernate and Wicket. And I see a lot of DAO and Services packages and I want to ... |
2. How to create a client notification service for a webapp or should I use an Observer Pattern? stackoverflow.comI have a fully implemented DAO and all my beans inherit an Entity object. Now, I want to create a client notification system whereby, when a user creates/updates/delete an entity to/from a ... |
3. Exposing DAO as web service stackoverflow.comCan anyone point me in the direction of documentation for exposing a DAO as an external web service? Currently, in my application we follow a DAO -> Service -> UI ... |
4. Generic Dao and service Layer stackoverflow.comI am going to design a DAO layer for my application. My focus is that Services just calls DAO which is independent of underlaying implementation. |
5. in which layer implement validator dao response? stackoverflow.comI have a DAO which makes a call to a REST WS. In order to prevent non-valid data sent by the WS, i want to implement a validator. Where must i implement ... |
6. DAO with JDBC, Web Service, XML File IO coderanch.comHey Guys I have been on asking a few questions in the last couple of weeks, and i got a few good answers so i'm gonna try again. I need a suggestion on how to set up a proper DAO for the following situation. I may have different db connections (MySQL, SQLServer, Oracle) sounds like factory pattern, but i may also ... |
7. Could explain me the relation between services and dao layer and why are needed? coderanch.comDAO Layer :- DAO Layer is the one where You are speacking about persistancy instead of calling JDBC or Hibernate directly. so if you want to change any setting ( Like Change the Connection settings ) ,then you can change only one place where in you DAO .Not in all the places. Service Layer :- Service Layer is the Used to ... |
8. Preventing access of DAO layer from Service layer. coderanch.comHi I have question regarding DAO design pattern. Generally we separate service layer from database layer by interface like DAO. e.g public interface xxxDAO { public void getData(int id); } public class xxxDAOImpl impelements xxxDAO { public void getData(int id) { // code for retriving data from db. } } Now I will acccess the DAO class from the service layer ... |