rs = meta.getPrimaryKeys(null, schema, name);
rs = meta.getPrimaryKeys(null, getSchema(), getName());
    private void initPrimaryKeys(DatabaseMetaData meta) throws SQLException {        ResultSet rs = null;        try {            rs = meta.getPrimaryKeys(null, schema, name);            while (rs.next())                addPrimaryKey(rs);        } finally {            if (rs != null)                rs.close();        }    }