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Subject: RE: QueryServlet/Hibernate
Date: Fri, 27 Aug 2010 16:22:43 +0200
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It's ok, i have received it.

-----Message d'origine-----
De=A0: Greg Brown [mailto:gkbrown@mac.com]=20
Envoy=E9=A0: vendredi 27 ao=FBt 2010 14:03
=C0=A0: user@pivot.apache.org
Objet=A0: Re: QueryServlet/Hibernate

The attachment didn't come through - may have been too big. Is it =
possible
for you to post it to a web server somewhere?

Sounds like it would make a great blog entry, if you do have time to =
write
one!

On Aug 27, 2010, at 1:16 AM, Taro App wrote:

> Oops, sorry for the large attachment. I hope it wouldn't clog anyone's =

> mail server...
>=20
>=20
> On Fri, Aug 27, 2010 at 2:14 PM, Taro App <apptaro@gmail.com> wrote:
>> Yes, I may not have enough time to write up a blog entry, I'll just=20
>> attach the demo here. It's a war file with the source code. Should=20
>> work on Java 1.6 + Tomcat 6.0. Libraries used are:
>>=20
>> - Hibernate 3.5.5 (with Annotation & JPA)
>> - Apache Derby 10.6.1.0 (Embeded, In Memory)
>> - JUnit 4.8.2
>> and of course, Apache Pivot 1.5.1 QueryServlet!
>>=20
>> jpaqueryservlet.servlet.ContactQueryServlet extends QueryServlet to=20
>> provide CRUD services for Contact data, which only has id, last name, =

>> first name and version for optimistic locking. ContactQueryServlet=20
>> makes calls to ContactDao, and ContactDao uses JPA for database=20
>> access. Hibernate provides the underlining database work for JPA, as=20
>> configured in persistence.xml. ContactDao is a bit overly complex for =

>> the purpose of this demo, but it uses JPA generic DAO pattern.
>> OpenEntityManagerInViewFilter, a servlet filter, provides=20
>> open-session-in-view pattern, which may also be a bit overly complex=20
>> for the purpose. Derby database is started and shutted down by=20
>> DerbyManagerListener, a servlet context listener. ContactWsTest is=20
>> the class to test the web service.
>>=20
>> apptaro
>>=20
>>=20
>>=20
>> On Thu, Aug 26, 2010 at 9:25 PM, Greg Brown <gkbrown@mac.com> wrote:
>>> Nice! Can we see it, or do we have to wait for the blog entry?  :-)
>>>=20
>>> On Aug 26, 2010, at 7:14 AM, Taro App wrote:
>>>=20
>>>> Hi Greg,
>>>>=20
>>>> I made a simple demo with QueryServlet/Hibernate/JPA and JUnit =
test.
>>>> I'll clean up some more and will publish it on my blog.
>>>>=20
>>>> apptaro
>>>>=20
>>>>=20
>>>>=20
>>>> On Thu, Aug 26, 2010 at 11:41 AM, Greg Brown <gkbrown@mac.com> =
wrote:
>>>>> It occurred to me earlier this evening that QueryServlet might =
make a
good REST-based front end to Hibernate or some other Java-based ORM =
tool.
However, I don't have a lot of experience with ORMs - the DB apps I have
written have generally used JDBC directly.
>>>>>=20
>>>>> Anyone with Hibernate knowledge care to comment (or possibly write =
up
a simple demo to test the theory)? I think an example that retrieves a =
bean
from the DB and uses JSONSerializer to write it back out to the caller =
would
be very cool. I'd be happy to help with such an example if anyone is
interested.
>>>>>=20
>>>>> G
>>>>>=20
>>>>>=20
>>>=20
>>>=20
>>=20