“Found: bit, expected: boolean” after Hibernate 4 upgrade

Question

I\'m trying to upgrade from Hibernate 3.6.5 to 4.0 (and from Spring 3.0.5 to 3.1 which is required for Hibernate 4 support).

Now, with both MySQL and HSQL, I\'m runn

Answer 1

I had the same problem and I extended the Dialect to take into account the fact that mysql treats boolean as an alias of bit.

public class Mysql5BitBooleanDialect extends MySQL5Dialect{     
    public Mysql5BitBooleanDialect() {
        super();
        registerColumnType( java.sql.Types.BOOLEAN, "bit" );        
    }       
}

I don't use longer bit() fields (to represent for example byte[]) so this might break that.