[jira] Commented: (IBATIS-310) DateTypeHandler throws NullPointerException on null Timestamps for some drivers

["Jeff Butler (JIRA)" <ib...@incubator.apache.org>]

    [ http://issues.apache.org/jira/browse/IBATIS-310?page=comments#action_12416935 ] 

Jeff Butler commented on IBATIS-310:
------------------------------------

iBATIS is behaving according to the spec.  I think the driver is acting wierd because of the date format.

If the physical file has '0001-01-01' in the column, then it is NOT a null - it is a special value.  So wasNull() should be false - and the value returned from getTimestamp() should be a valid date.  The problem is likely that your date format is "mdy", and that the special value is invalid for "mdy" format.

Try this again an add ";date format=iso" to the connection URL.  I'm betting that will solve the problem (the expected behavior is that you will get a non-null value back with the date set to '0001-01-01').


> DateTypeHandler throws NullPointerException on null Timestamps for some drivers
> -------------------------------------------------------------------------------
>
>          Key: IBATIS-310
>          URL: http://issues.apache.org/jira/browse/IBATIS-310
>      Project: iBatis for Java
>         Type: Bug

>   Components: SQL Maps
>     Versions: 2.1.6
>  Environment: JDBC Driver: JT Open driver for AS/400 (tested 4.8, 4.9, and 5.1.1)
>     Reporter: Matt DeHoust

>
> The problem is in DateTypeHandler in the getResult method.
>     java.sql.Timestamp sqlTimestamp = rs.getTimestamp(columnName);
>     if (rs.wasNull()) {
>       return null;
>     } else {
>       return new java.util.Date(sqlTimestamp.getTime());
>     }
> In our case, the JDBC driver is returning null, but wasNull() returns false because the database value is not null. The AS/400 uses a special low value ('0001-01-01') to represent null dates and timestamps.
> Since Timestamp is an object, the recommended fix is to simply check for null rather than using wasNull as follows.
>     java.sql.Timestamp sqlTimestamp = rs.getTimestamp(columnName);
>     if (sqlTimestamp == null) {
>       return null;
>     } else {
>       return new java.util.Date(sqlTimestamp.getTime());
>     }

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators:
   http://issues.apache.org/jira/secure/Administrators.jspa
-
For more information on JIRA, see:
   http://www.atlassian.com/software/jira