Re: Inserting "null" not working (Sun App Server, Postgres, EJB3)?

Heiko,

The reason that setNull is required is because the type information  
is required. NULL by it self has no type information. The jdbc driver  
binds values to a prepared statement and the type information is  
required. So setNull( n, typeinfo) is required to bind the correct type.

Why else would setNull even exist ?

Dave
On 1-Mar-07, at 3:48 PM, Heiko W.Rupp wrote:

> Hi,
>
> Am 01.03.2007 um 15:04 schrieb Ahmed Abd-el-Shafy Abd-Allah:
>> Internal Exception: org.postgresql.util.PSQLException : ERROR: column
>> "pools" is of type smallint but expression is of type character  
>> varyingError Code: 0
>>
>> Call:INSERT INTO MYTABLE (POOLS) VALUES (?)
>> bind => [ null]
>> Query:InsertObjectQuery(aaacs.rex.ejb.entities.MyTable@10b287f)
>
> We have the very same problem with JBoss EJB3 and Postgres.
> Our "solution" is to get the underlying Hibernate session via  
> EntityManager.getDelegate() and call the setNull()  (?)  Method
> from Hibernate for this. So the problem is twofold:
> - EJB3 being too stupid to have a setNull() method
> - Postgres JDBC driver not automatically the right thing anyway
>
>   Heiko
>
> -- 
> Heiko W.Rupp
> heiko.rupp@redhat.com, http://www.dpunkt.de/buch/3-89864-429-4.html
>
>
>
>
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