What is the benefit of distancing DAO classes from the ones actually being instantiated in the application code, i.e. why not just instantiate the dao class straight up in a scenario like this:
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Let there a few separate DAO classes OrderDAO, ProductDAO, and CustomerDAO that store/retrieve data in the database and share a single 开发者_高级运维instance DataSource (the database connection facto
The purpose is to handle all persistence exception and wrapped to simple general exception, so service layer can easily handle them.
I\'ve got a question on the transfer object in DAO pattern. Let\'s say you have a USER table, and there are 20 fields in this table. 开发者_StackOverflow中文版In the business logic, I notice that I ma
Under .net (specifically C# really), is there an equivalent to Java\'s DataSource class?I\'m used to creating a single DataSource (pooled or non-pooled) and passing i开发者_StackOverflowt around to ob
Let\'s consider a simple example of DAO pattern. Let Person is a value object and PersonDAO 开发者_JAVA百科is the correspondent trait, which provides methods to store/retrieve Person to/from the datab
Say I have following generic dao deployed as a local SLSB: public interface CrudService { public <T> T create(T t);
Recently I did some work around to check, where to give the session related code in our application, ie .Getting current session (sessionFactory.getCurrentSession());
Im working with Spring 3 and Hibernate 3.6 on developing a webapplication. I have a DAO-Class and I created in a xml-file ONE bean (named \"dao1\") for it. Every class which needs to access the datab
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