Re: Spring/hibernate and JDBC

From:

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>

Newsgroups:

comp.lang.java.programmer

Date:

Thu, 21 Jul 2011 17:52:18 -0400

Message-ID:

<4e289f95$0$302$14726298@news.sunsite.dk>

On 7/9/2011 8:32 PM, Jack wrote:

On Jul 9, 4:01 pm, markspace<-@.> wrote:

On 7/9/2011 2:56 PM, Jack wrote:

With spring and hibernate so popular now, is there anybody still only
use JDBC to write database application code? Thanks.

I'm sure someone is, but yes I assume that JPA& Hibernate and
dependency injection frameworks like Spring and JSF have become the norm.

Still good to know what JDBC is and does, since it's used by JPA and
Hibernate (et al.).

Is using JDBC to access database more efficient than using
Spring/hibernate?

As Hibernate is using JDBC then in theory JDBC will always
be at least as fast as Hibernate.

In practice I would say that Hibernate is often as fast
as manually written JDBC code but occasionally much slower.

When it is much slower it is typical because:
- the developer did not understand hibernate sufficiently
   well (it is very typical for ORM to be very easy to get
   the code working but it requires deep understanding to
   actually get it working right - because the ORM hides
   what is going on behind the scenes)
- the task was not suited for ORM

Arne