ResultTransformer with createSQLQuery forces no camelCase in entity fields

Question

I have an sql query as follows:

List employees = getCurrentSession()
                    .createSQLQuery(
                            \"select\"
         


        

Answer 1

For a simpler solution, double-quote the identifier in the query as sent to the server. Instead of

e.first_name as firstName

it should read

e.first_name as "firstName"

In PostgreSQL, double-quoting an identifier forces case-sensitivity. Unquoted, it (mostly) follows the SQL standard and folds to a single case (albeit lower case where the standard is upper case).

Answer 2

You can use addScalar(String columnAlias, Type type) to explicitly declare the column alias of your native SQL:

  getCurrentSession()
  .createSQLQuery( "select e.id as id,e.first_name as firstName,e.password as password from xxxxxx")
                .addScalar("id",StandardBasicTypes.INTEGER )
                .addScalar("firstName",StandardBasicTypes.STRING )
                .addScalar("password",StandardBasicTypes.STRING )
                .setResultTransformer(Transformers.aliasToBean(Employee.class))
                .list();

Answer 3

It might be related to how ( and if ) you configured your NamingStrategy

http://matthew.mceachen.us/blog/hibernate-naming-strategies-20.html

or

if you're using MySQL to weather or not you've enabled case sensitive table/column names http://dev.mysql.com/doc/refman/5.0/en/identifier-case-sensitivity.html