JDBC & custom type of variable types (!)

Hello,

 

I'd like to retrieve a custom type from a result set,

but problem: I don't know exactly the structure.

It may be float/text or int/text, so I'd need to map it to one of those java custom types:

 

   deciType <Double,String>;

   intType  <Long, String>;

 

 

Can I rely on a ClassCastException  as below to find the correct matching?

even when the custom type has NULL(s) in it ?

 

Or is there a better approach ?

 

case Types.STRUCT:

 

            try

            {

                foo = (intType)resultset1.getObject(1);

            }

            catch (ClassCastException e)

            {

                blah = (deciType)resultset1.getObject(1);

            }

 

(Postgres 9.3 , JDBC4 Postgresql Driver, Version 9.3-1100)

 

many thanks,

 

Marc Mamin