File APIs for Java Developers
Manipulate DOC, XLS, PPT, PDF and many others from your application.
http://aspose.com/file-tools
The moose likes Object Relational Mapping and the fly likes  How do I get Hibernate 3 to NOT cache on JBoss???? Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login


Win a copy of EJB 3 in Action this week in the EJB and other Java EE Technologies forum!
JavaRanch » Java Forums » Databases » Object Relational Mapping
Bookmark " How do I get Hibernate 3 to NOT cache on JBoss????" Watch " How do I get Hibernate 3 to NOT cache on JBoss????" New topic
Author

How do I get Hibernate 3 to NOT cache on JBoss????

Marcos Maia
Ranch Hand

Joined: Jan 06, 2001
Posts: 977
Hi,

during development I want hibernate to not cache references so I wont need to restart jboss after an update on the data domain layer. How do I do that? Couldn�t fin anything on docs or foruns...
and

tx in advance
Paul Sturrock
Bartender

Joined: Apr 14, 2004
Posts: 10336

Hibernate only uses the first level cache by default - you have to configure the second level cache explicitly. The first level cache should not give you any problems, and since JBoss supports hot deployment you should be able to develop and deploy without restarting. How are you caching your POJOs?


JavaRanch FAQ HowToAskQuestionsOnJavaRanch
Marcos Maia
Ranch Hand

Joined: Jan 06, 2001
Posts: 977
Hi Paul,
tx for reply...

Im not configuring nothing special, just using standard hibernate for now, while in development. I�m using exploded directory structure do develop so I have a folder for my .ear, inside a folder for my .jar and for .war, everything works fine when i do a hot deployment and touch the application.xml , jboss does update the class loader but if i had used any data domain object(i.e - hibernate persistence objects) when i try to to run a JUnit test again I allways get an exception like this:



any help will be appreciated..
Jignesh Patel
Ranch Hand

Joined: Nov 03, 2001
Posts: 626

I have similar kind of issue.
I am using weblogic8.1(SP4), but whenever I modified something in code and deploy again, the server deploys old code, not the modified one.

-Jignesh
Marcos Maia
Ranch Hand

Joined: Jan 06, 2001
Posts: 977
Originally posted by Jignesh Patel:
I have similar kind of issue.
I am using weblogic8.1(SP4), but whenever I modified something in code and deploy again, the server deploys old code, not the modified one.

-Jignesh


Hi Jignesh, are u using exploded directory structure?
Jignesh Patel
Ranch Hand

Joined: Nov 03, 2001
Posts: 626

yup, but even if I use .jar then also it is supposed to deploy at Runtime again.

One more reason I am thinking: I am using quartz, so even when I redeploy whole application the quartz thread continously running, don't get redeploy untill unless I shutdown the App Server, so that thread keeps using old java objects and never let them expire from memory through garbage collector.

So even though my APP-INF/lib folder have a new code(I have checked it), I am getting data from old objects.


Any body came across that kind of scenario?
-Jignesh
Marcos Maia
Ranch Hand

Joined: Jan 06, 2001
Posts: 977
Originally posted by Jignesh Patel:
yup, but even if I use .jar then also it is supposed to deploy at Runtime again.

One more reason I am thinking: I am using quartz, so even when I redeploy whole application the quartz thread continously running, don't get redeploy untill unless I shutdown the App Server, so that thread keeps using old java objects and never let them expire from memory through garbage collector.

So even though my APP-INF/lib folder have a new code(I have checked it), I am getting data from old objects.


Any body came across that kind of scenario?
-Jignesh


Jignesh, using exploded directory structure you have to place a file called Redeploy under the directory Meta-inf on you .ear and touch it to get weblogic to reload the classes eliminating the need to restart it.
 
jQuery in Action, 2nd edition
 
subject: How do I get Hibernate 3 to NOT cache on JBoss????
 
Similar Threads
Accessing Treecache
jboss 4.2.3 + jpa + ehcache.xml + hibernate ---> trouble
JBoss TreeCache
Caching in Hibernate
Need help on jboss cache