Postgresql update - Using ArrayList - postgresql

Question

I am getting an exception on update of postgres:
org.postgresql.util.PSQLException: Can't infer the SQL type...
Here is the code where in I build the sql statement dynamically and append the params:
public Boolean update(UserData usrData){
String sqlUpdateUser = "UPDATE \"USER\" ";
String sqlSetValues = "SET";
String sqlCondition = "Where \"USER_ID\" = ? ";
List<Object> params = new ArrayList<Object>();
List<Integer> types = new ArrayList<Integer>();
if(usrData.getFirstName() != null){
sqlSetValues = sqlSetValues.concat(" \"FIRST_NAME\" = ? ").concat(", ");
params.add(usrData.getFirstName());
types.add(Types.VARCHAR);
}
if(usrData.getMiddleName() != null){
sqlSetValues = sqlSetValues.concat("\"MIDDLE_NAME\" = ? ");
params.add(usrData.getMiddleName());
types.add(Types.VARCHAR);
}
params.add(usrData.getUserId());
types.add(Types.BIGINT);
Object[] updateParams = new Object[params.size()];
updateParams = params.toArray(updateParams);
Integer[] paramTypes = new Integer[types.size()];
paramTypes = types.toArray(paramTypes);
sqlUpdateUser = sqlUpdateUser.concat(sqlSetValues).concat(sqlCondition);
int rowsAffected = this.jdbcTemplate.update(sqlUpdateUser, updateParams, paramTypes);
if(rowsAffected > 0){
return Boolean.TRUE;
}else{
return Boolean.FALSE;
}
}
And table schema for the USER table is:
"FIRST_NAME" character varying(50),
"MIDDLE_NAME" character varying(50),
If I do an update statically without using the collection, but by using Array, I see no issue.
Code snipped using arrays:
Object[] param = { usrData.getFirstName(), usrData.getMiddleName(), usrData.getUserId() };
int[] type = { Types.VARCHAR, Types.VARCHAR, Types.BIGINT };
int rowsAffected = this.jdbcTemplate.update(sqlUpdateUser, param, type);
Am I missing something?
Thanks
K

Answer 1

Move these lines
Object[] updateParams = new Object[params.size()];
updateParams = params.toArray(updateParams);
Integer[] paramTypes = new Integer[types.size()];
paramTypes = types.toArray(paramTypes);
beneath
params.add(usrData.getUserId());
types.add(Types.INTEGER);
In your case you are missing to add usrData.getUserId() in updateParams.