Thread: Exception in Boolean to int2 conversion in xwiki??

Hi,

I get the following exception while using xwiki and PostgreSQL, which
originates in the PostgreSQL jdbc driver according to the stacktrace:

2005-10-10 06:03:24,657 ERROR [org.hibernate.util.JDBCExceptionReporter]
Batch entry 0 update xwikiclassesprop set XWP_PRETTYNAME=Skin,
XWP_CLASSTYPE=com.xpn.xwiki.objects.classes.StringClass,
XWP_UNMODIFIABLE=0, XWP_NUMBER=1 where XWP_ID=104408758 and
XWP_NAME=skin was aborted.  Call getNextException to see the cause.
2005-10-10 06:03:24,657 WARN  [org.hibernate.util.JDBCExceptionReporter]
SQL Error: 0, SQLState: 42804
2005-10-10 06:03:24,657 ERROR [org.hibernate.util.JDBCExceptionReporter]
ERROR: column "xwp_unmodifiable" is of type smallint but expression is
of type boolean

Does this mean that it is not possible to convert a Java Boolean to a
PostgreSQL int2 according to the driver or am I reading the exception
text wrong?

If I am reading the exception text correct, doesn't the JDBC spec
specify a mapping from Boolean to smallint (according to Appendix B,
table B-5)?

--
Groeten,

Joost Kraaijeveld
Askesis B.V.
Molukkenstraat 14
6524NB Nijmegen
tel: 024-3888063 / 06-51855277
fax: 024-3608416
e-mail: J.Kraaijeveld@Askesis.nl
web: www.askesis.nl

Joost Kraaijeveld wrote:

> 2005-10-10 06:03:24,657 ERROR [org.hibernate.util.JDBCExceptionReporter]
> ERROR: column "xwp_unmodifiable" is of type smallint but expression is
> of type boolean

> Does this mean that it is not possible to convert a Java Boolean to a
> PostgreSQL int2 according to the driver or am I reading the exception
> text wrong?

> If I am reading the exception text correct, doesn't the JDBC spec
> specify a mapping from Boolean to smallint (according to Appendix B,
> table B-5)?

Table B-5 says that you can do "setObject(n, new Boolean(value),
Types.SMALLINT)" and the driver will convert the Boolean to a SMALLINT.
See section 13.2.2.2 ("Type Conversions Using the Method setObject") in
the spec.

As far as I know, the driver supports this case correctly.

I suspect that Hibernate is using setBoolean(), or passing a Boolean to
the setObject() variant that does not take a Types constant. In both of
these cases the driver will pass the parameter to the backend typed as a
boolean, which will produce an error like the above if actually needs to
be some other type.

-O