在Spring Framework 3.0中使用Hibernate和Jdbc

Question

I am working on a project which uses Spring 3.0, hibernate 3.0. My project has Controller, Service and DAO layers. Daos(written in hibernate) are accessed from service layer. Now the requirement is I need to use both Hibernate as well as JDBC. Hibernate part is about 80-90%. For Remaining 10%, I have to use simple JDBC(JdbcTemplate can be used). Please suggest me, how do I go for both hibernate and Jdbc together. I need design with Separation, Re-usability. Also how do implement it in Spring?

Any suggestions are appreciated.

Thanks in Advance!!

Answer 1

You can safely mix hibernate with spring JDBC and both should be able to share transactions managed by HibernateTransactionManager . Keep in mind you should be using spring templates to achieve this because they are able to detect and reuse thread-bound connection with active transaction. If for some reason you would like to add another jdbc based library to the mix (like groovy sql for example) you can still do it through spring DataSourceUtils .

The only potential issues can arise when both hibernate and spring jdbc templates operate on the same data. Hibernate may delay database updates and spring jdbc would then access outdated data. My experience with this interaction comes from older versions of spring and there may be some mechanisms to resolve this issue nowadays.

Answer 2

I am writing this answer in hope that people will improve mine answer as this may not be the best answer so please comment.

In hibernate you can use named native query example : http://www.java2s.com/Code/Java/JPA/UsingNamedNativeQuery.htm Scroll a little bit down and find File: Professor.java You can use this example. This way you can fire native queries from hibernate.