Spring JdbcTemplate query parameters type error: Invalid column type - oracle

Question

I use Spring Jdbc Template that way:
public List<User> getUsersForGrid(int rows, int page, String sidx,
String sord) {
int fromRecord = 0;
int toRecord = 0;
toRecord = page * rows;
fromRecord = (page - 1) * rows;
StringBuilder sqlB = new StringBuilder();
sqlB.append("SELECT user_id, username ");
sqlB.append("FROM users ");
sqlB.append("WHERE :fromRecord <= rownum AND rownum <= :toRecord ");
sqlB.append("ORDER BY %s %s ");
String sql = String.format(sqlB.toString(), sidx, sord);
MapSqlParameterSource params = new MapSqlParameterSource();
params.addValue("fromRecord", fromRecord);
params.addValue("toRecord", toRecord);
List<Map<String, Object>> rsRows = this.jdbcTemplate.queryForList(sql
.toString(),params);
List<User> users = new ArrayList<User>();
for (Map<String, Object> row : rsRows) {
BigDecimal id = (BigDecimal) row.get("user_id");
String username = (String) row.get("username");
User user = new User(id.intValue(), username);
users.add(user);
}
return users;
}
and get java.sql.SQLException: Invalid column type
sidx is column nate("user_id" for example) sord is asc/desc
When pass no params(execute only
sql.append("SELECT user_id, username ");
sql.append("FROM users ");
) everything is OK.
Update: Works with:
sqlB.append("WHERE ? <= rownum AND rownum <= ? ");
and
this.jdbcTemplate.queryForList(sql.toString(),new Object[]{fromRecord, toRecord});
Seems like problem with Spring MapSqlParameterSource and named parameters. I use Spring 3.1.3
DB is Oracle 11.2
describe users;
Name Null Type
------------------------------ -------- ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
USER_ID NOT NULL NUMBER
USERNAME NOT NULL VARCHAR2(40)
PASSWORD NOT NULL VARCHAR2(20)
ENABLED NOT NULL NUMBER

Answer 1

I think the problem is with your order by clause,
you are trying to dynamically change your order by clause.
Just try
StringBuilder sql = new StringBuilder();
sql.append("SELECT user_id, username ");
sql.append("FROM users ");
sql.append("WHERE :fromRecord <= rownum AND rownum <= :toRecord ");
sql.append("ORDER BY user_id asc ");
MapSqlParameterSource params = new MapSqlParameterSource();
params.addValue("fromRecord", fromRecord);
params.addValue("toRecord", toRecord);
If the above works, then instead of using the MapSqlParameterSource for changing the order by clause use something like
StringBuilder sql = new StringBuilder();
sql.append("SELECT user_id, username ");
sql.append("FROM users ");
sql.append("WHERE :fromRecord <= rownum AND rownum <= :toRecord ");
sql.append("ORDER BY %s %s ");
//Format the sql string accordingly
MapSqlParameterSource params = new MapSqlParameterSource();
params.addValue("fromRecord", fromRecord, Types.INTEGER);
params.addValue("toRecord", toRecord, Types.INTEGER);
Hope it helps.

Answer 2

try this
List<Map> rows = getJdbcTemplate().queryForList(sql);
for (Map row : rows) {
BigDecimal id = (BigDecimal) row.get("user_id");
String username = (String) row.get("username");
User user = new User(id.intValue(), username);
users.add(user);
}
ok try
MapSqlParameterSource namedParameters = new MapSqlParameterSource();
namedParameters.addValue("fromRecord", fromRecord);
namedParameters.addValue("toRecord", toRecord);
namedParameters.addValue("sidx", sidx);
namedParameters.addValue("sord", sord);
return this.getNamedParameterJdbcTemplate().query(query,
namedParameters, new UserElementMapper());
public class UserMapper implements RowMapper<User> {
public EmailElement mapRow(ResultSet rs, int rowNum) throws SQLException {
User user = new User();
emailElement.setID(rs.getInt("user_id"));
emailElement.setUsernameo(rs.getString("username"));
return user;
}
}