developing a simple orm [closed]

Question

I want to develop a simple orm which performs CRUD functionality.Shold i use reflection? does libs like hibernate use reflection?? does using reflection will cause the speeed to drop down by a large extent?

Answer 1

Yes Hibernate uses reflection and annotations (or XML configuration files), but it will only index and read all meta information once (at startup). I would recommend though to look at the existing ORM solutions first before you start rolling your own.

Answer 2

A simple ORM is DAO (Data Access Object). You can specify your CRUD operations very well.

For More ORM patterns or Methodology, read Martin Fowler's book: Patterns of Enterprise Application Architecture

Also, you can use the existing JPA (Java Persistence API) and write your own JPA.