maybe even a new Type constant is necessary, as e.g. BigInteger has no counterpart in java.sql.Types
then, also DBTypeTransformer has to be adapted
If needed, register code type class in getIncludeClasses in DtoFileGenerator, JoinDtoFileGenerator, JdbcDAOFileGenerator in order to generate an import for it
If needed, adapt org.clazzes.dmgen.gen.java.file.JdbcDAOFileGenerator.getFetchFromResultSetString(Attribute, int)
If needed, adapt org.clazzes.dmgen.gen.java.file.JdbcDAOFileGenerator.writeFillPreparedStatementMethod(List<Attribute>)