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Groups > comp.lang.java.programmer > #14127
| From | Arved Sandstrom <asandstrom3minus1@eastlink.ca> |
|---|---|
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: Apache JDBC utils |
| References | <jnn1pc$33c$1@dont-email.me> <nospam-E4727E.23373001052012@news.aioe.org> |
| Message-ID | <u78or.34999$Ex1.4127@newsfe18.iad> (permalink) |
| Organization | Public Usenet Newsgroup Access |
| Date | 2012-05-02 07:37 -0300 |
On 12-05-02 12:37 AM, John B. Matthews wrote: > In article <jnn1pc$33c$1@dont-email.me>, markspace <-@.> wrote: > >> And: is there a better, light-weight non-ORM package that you might >> recommend instead? Something a bit more complete. > > Having always used JDBC, I wanted to see what a persistence unit looked > like. I used the "New Entity Classes from Database Wizard" in NetBeans > to generate an entity for a database table named CUSTOMER and clicked > the persistence unit button to generate a JPA controller. > > Entity -> Customer.java > Persistence unit -> CustomerJpaController.java I'll have to run NetBeans tonight to remind myself of what it produces as a "JPA controller". :-) Bear in mind, persistence units are actually what are described in persistence.xml (one or more). > Then I used these two classes to fill a JComboBox model, as shown here: > > <http://stackoverflow.com/a/2531942/230513> > > The example was easy to create, and I can see several things: > > 1. The queries, getters, setters and annotations generated in the entity. > > 2. The findCustomerXxx, create, edit and destroy methods generated in > the controller, which appear to correspond roughly to select, insert, > update and delete. > Don't get me wrong, I'm a JPA enthusiast. Before it showed up I used the native APIs in Toplink, Toplink Essentials and Hibernate, and even those usually would win out over straight JDBC. But what you did above just scratches the surface. It's now your responsibility to read and understand the JPA specification and get the lay of the land for the APIs. I mean "your" in the general sense here. You've always used JDBC, you say. You're aware then that you have to know quite a lot to use that well. You need to know a lot more - *plus* understanding JDBC, IMO - to use JPA well. We've been throwing around terms like conceptual or architectural weight - with JPA you pull in a fair bit of that. I don't believe that *you* would stop here - in fact you'd go ahead and read the spec - but I've seen a fair few programmers that think that's mostly all there is to JPA: use the IDE to generate from the DB, or vice versa. They always run into problems sooner or later. AHS -- A fly was very close to being called a "land," cause that's what they do half the time. -- Mitch Hedberg
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Apache JDBC utils markspace <-@.> - 2012-04-30 14:55 -0700
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-04-30 20:56 -0300
Re: Apache JDBC utils markspace <-@.> - 2012-04-30 17:50 -0700
Re: Apache JDBC utils Lew <lewbloch@gmail.com> - 2012-04-30 18:03 -0700
Re: Apache JDBC utils markspace <-@.> - 2012-04-30 19:27 -0700
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-01 10:29 -0300
Re: Apache JDBC utils markspace <-@.> - 2012-05-01 08:57 -0700
Re: Apache JDBC utils Lew <lewbloch@gmail.com> - 2012-05-02 11:16 -0700
Re: Apache JDBC utils markspace <-@.> - 2012-05-03 07:51 -0700
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-01 19:22 -0400
Re: Apache JDBC utils Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-05-01 10:32 -0700
Re: Apache JDBC utils markspace <-@.> - 2012-05-01 11:22 -0700
Re: Apache JDBC utils Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-05-01 15:26 -0700
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-01 19:44 -0300
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-01 19:26 -0400
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-01 21:14 -0300
Re: Apache JDBC utils Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-05-01 22:22 -0500
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 13:52 -0400
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 13:51 -0400
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-03 17:11 -0300
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 16:58 -0400
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-03 18:25 -0300
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 19:55 -0400
Re: Apache JDBC utils Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-05-01 22:08 -0500
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 13:55 -0400
Re: Apache JDBC utils Leif Roar Moldskred <leifm@dimnakorr.com> - 2012-05-03 13:44 -0500
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 15:06 -0400
Re: Apache JDBC utils "John B. Matthews" <nospam@nospam.invalid> - 2012-05-01 23:37 -0400
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-02 07:37 -0300
Re: Apache JDBC utils "John B. Matthews" <nospam@nospam.invalid> - 2012-05-02 18:51 -0400
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-02 12:22 +0200
Re: Apache JDBC utils markspace <-@.> - 2012-05-02 08:29 -0700
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-02 22:02 +0200
Re: Apache JDBC utils Lew <lewbloch@gmail.com> - 2012-05-02 14:22 -0700
Re: Apache JDBC utils Arved Sandstrom <asandstrom3minus1@eastlink.ca> - 2012-05-02 18:53 -0300
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-03 00:03 +0200
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-03 00:14 +0200
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-03 00:27 +0200
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 14:03 -0400
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-02 18:58 -0400
Re: Apache JDBC utils Lew <lewbloch@gmail.com> - 2012-05-02 16:18 -0700
Re: Apache JDBC utils Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-05-02 15:25 -0700
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-03 00:59 +0200
Re: Apache JDBC utils Arne Vajhøj <arne@vajhoej.dk> - 2012-05-03 14:05 -0400
Re: Apache JDBC utils Lew <lewbloch@gmail.com> - 2012-05-02 16:24 -0700
Re: Apache JDBC utils Daniel Pitts <newsgroup.nospam@virtualinfinity.net> - 2012-05-02 16:35 -0700
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-03 01:46 +0200
Re: Apache JDBC utils Jan Burse <janburse@fastmail.fm> - 2012-05-03 01:49 +0200
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