Error: Unsupported Object java.util.Hashtable

Question

Hi,
I am getting Uncategorized SQL exception for my code:
The error is:
org.springframework.jdbc.UncategorizedSQLException: PreparedStatementCallback; uncategorized SQLException for SQL [select distinct table_desc from TABLE order by table_desc where   month = ?  and year = ? ]; SQL state [HY000]; error code [857]; [NCR][Teradata JDBC Driver]:PreparedStatement.setObject: Unsupported Object java.util.Hashtable ; nested exception is java.sql.SQLException: [NCR][Teradata JDBC Driver]:PreparedStatement.setObject: Unsupported Object java.util.Hashtable
Here is the code
public class ABC {  
private static final String MYDATE = "  month = ?  and year = ? ";
public List<String> getTables(Report report) {
          List<String> tables =  new ArrayList<String>();
          JdbcTemplate template = new JdbcTemplate( dataSource );          
          Object sqlParameters[] = null;
          sqlParameters = new Object[]{ getMonthAndYear( report ) };
          String sql = "select distinct table_description from TABLE " +
          " order by table_description where ";
          tables= template.queryForList(sql + MYDATE,sqlParameters);          //the error is throwing on this line     
          return( tables);
private Map<Integer, Integer> getMonthAndYear( Report report ) {
      Calendar today = Calendar.getInstance();
      Map<Integer, Integer> monthYear = new Hashtable<Integer, Integer>();     
      monthYear.put( Calendar.MONTH, today.get( Calendar.MONTH ) );
      monthYear.put( Calendar.YEAR, today.get( Calendar.YEAR ) );        
        System.out.println("monthYear :"+monthYear);//this prints monthYear :{2=10, 1=2008}
        return( monthYear );
}Can anybody help me solve it? It's something to do with the parameters I am getting back...
I will appreciate your help,
Thanks in advance...

Answer 1

evnafets wrote:
What do you expect it to do with your "parameters"?
You are using a [Spring JdbcTemplate|http://static.springframework.org/spring/docs/2.0.x/api/org/springframework/jdbc/core/JdbcTemplate.html#queryForList(java.lang.String,%20java.lang.Object[])]
What should the where clause of your sql query be?
Why do you think this would accept parameters in a Map<Integer, Integer> ?The parameters would restrict the result I will get with my query, i have to bound with month and year constraint as part of requirements.
The Where clause would be : where month = ? and year = ? ( which could be month = 10 and year = 2008)
I am using Map<Integer, Integer> because in database these month and year values are numeric...
But I don't know what it doesn't like it?
Any idea?
Edited by: ASH_2007 on Nov 11, 2008 1:36 PM