Re: Does Tapestry (4) and Hibernate coexist nicely

2007-08-29 Thread Jan Vissers
Thx.

I'm using Spring 2.0.6 and the OpenSessionInView Filter (for Hibernate)
that comes with it - and have configured that in my web.xml. Doing some
thorough testing currently...


 Yes, although it depends on how you implement it. You need to ensure
 that the session is closed by HiveMind in a threaded model, or
 problems will arise while rendering. I do it thusly:

   service-point id=HSessionManagerFactory
 interface=com.myasd.db.dao.ISessionManagerFactory
   create-instance
 class=com.myasd.db.dao.HibernateSessionManagerFactory/
   /service-point

   service-point id=SessionManager
 interface=com.myasd.db.dao.ISessionManager
   invoke-factory model=threaded
   construct 
 class=com.myasd.db.dao.HibernateSessionManager/
   /invoke-factory
   /service-point

 All my DAO's are then done via invoke-factory:

   service-point id=AccountDAO
 interface=com.myasd.db.dao.proto.AccountDAO
   invoke-factory
   construct class=com.myasd.db.dao.impl.AccountDAO/
   /invoke-factory
   /service-point

 I've been doing this in production for 6 months or longer and it's
 been working very, very well. Adding database operations to a
 Tapestry page is trivial after the setup.

 Norman Franke
 www.myasd.com


 On Aug 29, 2007, at 8:40 PM, Jan Vissers wrote:

 When it comes to lazy loading?


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RE: Does Tapestry (4) and Hibernate coexist nicely

2007-08-29 Thread Jonathan Barker

I've had an application based on Tap 4.0.2, Hibernate 3.1, Spring 1.2.5,
Acegi 1.0.0 with complicated inheritance and relationships, and Hibernate
interceptors.

I haven't touched the code in 10 months and it works like a charm.

I ran into issues during development with Class cast exceptions for
component parameters when accessing through OGNL, but just got around it by
putting the accessors into Java code instead.  This problem was not
exclusive to lazy loading, but it did cause me to change to eager loading
for a few relationships.

Make sure you have a good equals() definition for your model classes - I
added an oid property to a BaseModelObject populated from a UUID generator
and used that for equality.  I read a lot of different perspectives on
equality testing for hibernate - and that's the religion I chose.

All in all, lazy loading works very well.


 -Original Message-
 From: Jan Vissers [mailto:[EMAIL PROTECTED]
 Sent: Wednesday, August 29, 2007 8:41 PM
 To: users@tapestry.apache.org
 Subject: Does Tapestry (4) and Hibernate coexist nicely
 
 When it comes to lazy loading?
 
 
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