jdbcTemplate.queryForList returns list of Map where all column values are NULL - jdbc

Question

Any calls using jdbcTemplate.queryForList returns a list of Maps which have NULL values for all columns. The columns should've had string values.
I do get the correct number of rows when compared to the result I get when I run the same query in a native SQL client.
I am using the JDBC ODBC bridge and the database is MS SQL server 2008.
I have the following code in my DAO:
public List internalCodeDescriptions(String listID) {
List rows = jdbcTemplate.queryForList("select CODE, DESCRIPTION from CODE_DESCRIPTIONS where LIST_ID=? order by sort_order asc", new Object[] {listID});
//debugcode start
try {
Connection conn1 = jdbcTemplate.getDataSource().getConnection();
Statement stat = conn1.createStatement();
boolean sok = stat.execute("select code, description from code_descriptions where list_id='TRIGGER' order by sort_order asc");
if(sok) {
ResultSet rs = stat.getResultSet();
ResultSetMetaData rsmd = rs.getMetaData();
String columnname1=rsmd.getColumnName(1);
String columnname2=rsmd.getColumnName(2);
int type1 = rsmd.getColumnType(1);
int type2 = rsmd.getColumnType(2);
String tn1 = rsmd.getColumnTypeName(1);
String tn2 = rsmd.getColumnTypeName(2);
log.debug("Testquery gave resultset with:");
log.debug("Column 1 -name:" + columnname1 + " -typeID:"+type1 + " -typeName:"+tn1);
log.debug("Column 2 -name:" + columnname2 + " -typeID:"+type2 + " -typeName:"+tn2);
int i=1;
while(rs.next()) {
String cd=rs.getString(1);
String desc=rs.getString(2);
log.debug("Row #"+i+": CODE='"+cd+"' DESCRIPTION='"+desc+"'");
i++;
}
} else {
log.debug("Query execution returned false");
}
} catch(SQLException se) {
log.debug("Something went haywire in the debug code:" + se.toString());
}
log.debug("Original jdbcTemplate list result gave:");
Iterator<Map<String, Object>> it1= rows.iterator();
while(it1.hasNext()) {
Map mm = (Map)it1.next();
log.debug("Map:"+mm);
String code=(String)mm.get("CODE");
String desc=(String)mm.get("description");
log.debug("CODE:"+code+" : "+desc);
}
//debugcode end
return rows;
}
As you can see I've added some debugging code to list the results from the queryForList and I also obtain the connection from the jdbcTemplate object and uses that to sent the same query using the basic jdbc methods (listID='TRIGGER').
What is puzzling me is that the log outputs something like this:
Testquery gave resultset with:
Column 1 -name:code -typeID:-9 -typeName:nvarchar
Column 2 -name:decription -typeID:-9 -typeName:nvarchar
Row #1: CODE='C1' DESCRIPTION='BlodoverxF8rin eller bruk av blodprodukter'
Row #2: CODE='C2' DESCRIPTION='Kodetilfelle, hjertestans/respirasjonstans'
Row #3: CODE='C3' DESCRIPTION='Akutt dialyse'
...
Row #58: CODE='S14' DESCRIPTION='Forekomst av hvilken som helst komplikasjon'
...
Original jdbcTemplate list result gave:
Map:(CODE=null, DESCRIPTION=null)
CODE:null : null
Map:(CODE=null, DESCRIPTION=null)
CODE:null : null
...
58 repetitions total.
Why does the result from the queryForList method return NULL in all columns for every row? How can I get the result I want using jdbcTemplate.queryForList?
The xF8 should be the letter ø so I have some encoding issues, but I can't see how that may cause all values - also strings not containing any strange letters (se row#2) - to turn into NULL values in the list of maps returned from the jdbcTemplate.queryForList method.
The same code ran fine on another server against a MySQL Server 5.5 database using the jdbc driver for MySQL.

Answer 1

The issue was resolved by using the MS SQL Server jdbc driver rather than using the JDBC ODBC bridge. I don't know why it didn't work with the bridge though.