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From: "Jason Pyeron" <jpyeron@pdinc.us>
To: "'Tomcat Users List'" <users@tomcat.apache.org>
References: <SNT124-DS1918A5A22DB7A7823CADBEF1F00@phx.gbl>
Subject: RE: please hwlp with hibernate strategy
Date: Sat, 1 May 2010 14:51:44 -0400
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=20

> -----Original Message-----
> From: Yucca Nel [mailto:yuccanel@live.co.za]=20
> Sent: Saturday, May 01, 2010 13:38
> To: Tomcat Users List
> Subject: please hwlp with hibernate strategy
>=20
> I am planning on using hibernate (1st time) in tomcat webapp.=20
> It would appear that it is common to use hibernate util class=20
> to load the session factory but I have yet to see this done=20
> using Servlet ContextListener. I have also only seen very bad=20

We load a helper class, which is the sessions factory with the webapp.

>From web.xml:

<listener><listener-class>us.pdinc.client.mil.navy.servlet.support.Reques=
tScopeH
ibernateSession</listener-class></listener>


public class RequestScopeHibernateSession implements =
ServletRequestListener=20
{
	public static final String PREFIX;
	public final String KEY;
	/** This method will fetch a hibernate session from request scope,
stored under KEY **/
	public static Session getSession(ServletRequest request);
	/** This method will close the session and execute the needed rollback
if there is a dirty transaction **/
	public void requestDestroyed(ServletRequestEvent arg0);
	/** This method will register this object into the request scope, under
KEY. **/
	public void requestInitialized(ServletRequestEvent arg0);
}

> example where someone used hibernate directly in their model=20
> instead of using it as part of a DAO  fa=E7ade. The following=20

While what you saw may indeed be very bad, DAO is not always an answer =
either.

> example is half finished from netbeans=20
> too:http://netbeans.org/kb/docs/web/hibernate-webapp.html Can=20
> someon point met to full MVC example with hibernate. I am=20

Its not full, but it might get the point across.
http://stackoverflow.com/questions/786840/annotation-support-in-struts-2/=
791164#
791164

> only interested in seeing the bsckend examples really and=20
> would any of you recommend using hibernate directly in a=20
> model business class?
>=20


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