not_found = 1,

type_is_not_mapped_to_storage,

trying_to_dereference_null_iterator,

too_many_tables_specified,

incorrect_set_fields_specified,

column_not_found,

table_has_no_primary_key_column,

cannot_start_a_transaction_within_a_transaction,

no_active_transaction,

incorrect_journal_mode_string,

public:

const char *name() const noexcept override final {

return "ORM error";

}

std::string message(int c) const override final {

switch (static_cast<orm_error_code>(c)) {

case orm_error_code::not_found:

return "Not found";

case orm_error_code::type_is_not_mapped_to_storage:

return "Type is not mapped to storage";

case orm_error_code::trying_to_dereference_null_iterator:

return "Trying to dereference null iterator";

case orm_error_code::too_many_tables_specified:

return "Too many tables specified";

case orm_error_code::incorrect_set_fields_specified:

return "Incorrect set fields specified";

case orm_error_code::column_not_found:

return "Column not found";

case orm_error_code::table_has_no_primary_key_column:

return "Table has no primary key column";

case orm_error_code::cannot_start_a_transaction_within_a_transaction:

return "Cannot start a transaction within a transaction";

case orm_error_code::no_active_transaction:

return "No active transaction";

default:

return "unknown error";

}

}

public:

const char *name() const noexcept override final {

return "SQLite error";

}

std::string message(int c) const override final {

return sqlite3_errstr(c);

}