Thread: Comparing Enumerated Types between JDBC and ODBC drivers

Comparing Enumerated Types between JDBC and ODBC drivers

From
Richard Broersma
Date:
While testing the waters of porting a MS-Access application to OObase.
 I noticed that certain types such as Enumerated types - as well as
other types (i.e. interval), where not representable in OObase using
the JDBC driver.   However, when I used the ODBC driver for OOBase all
such types were once again representable (they were represented as
text).

Is this an issues with OOBase or an issue with the representation of
complex types using the JDBC driver?

--
Regards,
Richard Broersma Jr.

Re: Comparing Enumerated Types between JDBC and ODBC drivers

From
Radosław Smogura
Date:
 Hi,

 First, You need to distinguish between SQL COMPLEX / COMPOSITE types
 (sometimes called as UDT) and PSQL internal types. Interval is internal
 type, such like integer, varchar, etc and it's mapped in JDBC to Java
 object from PSQL JDBC api. There is no public (JDK, OO, SUN) for
 Interval, but you have right in your situation you can get this type by
 calling getString() and you will get it's compatible representation, as
 well setString() should store those, too. You can find internal types
 which doesn't have mapping to any Java class, too.

 If you want SQL COMPOSITE types, only one way to access them (as I
 think), is similarly, by get/set String. JDBC driver doesn't support
 custom mapping of UDT to Java classes.

 It's looks ODBC driver has better support for PSQL.

 Kind regards,
 Radosław Smogura

 On Tue, 21 Dec 2010 10:14:18 -0800, Richard Broersma
 <richard.broersma@gmail.com> wrote:
> While testing the waters of porting a MS-Access application to
> OObase.
>  I noticed that certain types such as Enumerated types - as well as
> other types (i.e. interval), where not representable in OObase using
> the JDBC driver.   However, when I used the ODBC driver for OOBase
> all
> such types were once again representable (they were represented as
> text).
>
> Is this an issues with OOBase or an issue with the representation of
> complex types using the JDBC driver?
>
> --
> Regards,
> Richard Broersma Jr.


Re: Comparing Enumerated Types between JDBC and ODBC drivers

From
Richard Broersma
Date:
On Wed, Dec 22, 2010 at 6:11 AM, Radosław Smogura
<rsmogura@softperience.eu> wrote:

> If you want SQL COMPOSITE types, only one way to access them (as I think),
> is similarly, by get/set String. JDBC driver doesn't support custom mapping
> of UDT to Java classes.
>
> It's looks ODBC driver has better support for PSQL.

I think I understand.  Would you say that the underlying issue here is
the difference between the JDBC and ODBC specification?


--
Regards,
Richard Broersma Jr.