Null value was assigned to a property of primitive type sett

raphinou · **Joined:** Wed Jan 07, 2004 8:48 am **Posts:** 11

Hi,

I'm working on an existing database, generating the bindings and classes with Middlegen.
I'm working on customers and their orders. From a customer object, I call
getCustomerOrders() and get a Set of Orders. There are orders which have an int field set to NULL, which is the cause of my error message:

Code:

net.sf.hibernate.PropertyAccessException: Null value was assigned to a property of primitive type setter of mscustdb.hibernate.CustomerOrder.OrderCode

One possible solution would be to set this field to a special integer value (like 0 ) that we may be sure was not used as an order code. I'd prefer to not touch the data however.

Also I suspect I'll have more occurences of this problem, so I would like to find a better, general solution to put in my code.

Should I generate bindings and classes only with Integer types and no int? Is that possible?

Thanks in advance for your help!

Raph

michael · **Posted:** Tue Jan 13, 2004 8:07 am

If you have null values in your DB you should of course use Integers for your properties

raphinou · **Joined:** Wed Jan 07, 2004 8:48 am **Posts:** 11

gloeglm wrote:

If you have null values in your DB you should of course use Integers for your properties

Ok.

Is there a way to configure middlegen to specify Integer rather than int?

Thanks.

Raph

emmanuel · **Posted:** Tue Jan 13, 2004 9:00 am

Check the forum, I think it was answered some times ago.

raphinou · **Joined:** Wed Jan 07, 2004 8:48 am **Posts:** 11

emmanuel wrote:

Check the forum, I think it was answered some times ago.

Thanks for the help!

It seems the solution is to get the cvs version for now:

http://forum.hibernate.org/viewtopic.php?t=926856&highlight=middlegen&sid=df49253b2c9f0e1c3ba6425a665a208e

From the link above (by David):

Quote:

The next version of Hibernate Middlegen plugin has the ability to use a specialised JavaTypeMapper which can be applied to avoid it generating native types for nullable fields. Its all in CVS (Middlegens') if you want to play. The code includes a custom JavaTypeMapper which can be plugged in that has this feature.

Raph

raphinou · **Joined:** Wed Jan 07, 2004 8:48 am **Posts:** 11

I've found an even faster solution, and that fits my needs.

I have decided to replace all int mapping by a Integer mapping.
All I had to do it edit the file src/PROJECTNAME-prefs.properties and replace the mappings in it. This file is loaded by hbm2java .

The JavaTypeMapper seems to be much more flexible, but I don't really need it and discovered this alternative solution before getting to the point of using it.

Raph