JDBC and MetaData and Primary Keys... oh my?

Hello All,

I'm sorry if this has come up before, but I tried searching the archives
and didn't see my question.

I'm using Postgres 6.5.1 on Linux with the appropriate JDBC driver for
jdk 1.2.x.

What I'm having trouble with is some of the JDBC DatabaseMetaData
methods. Specifically, if I try the following:

primaryKeysResultSet = myDBMetaData.getPrimaryKeys( catalog, schema,
tableName );

The result returned is always empty. Let's assume, I hope, that I
defined the table properly, eg:

create table test_table (
column1 int4,
column2 Varchar(25),
PRIMARY KEY (column1)
);

Does anyone know if this should work? If so, what should values for
catalog and schema be? I get similar empty results when looking for
indexes. Listing the tables in a database works fine though.

Any help is really appreciated!

Bill

--
Upon seeing the box was too small, Schroedinger's Elephant breathed a
sigh of relief.