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@Transient
private String cityAsString = null;

The getSimpleJdbcTemplate().batchUpdate(String sql, Object[] arguments) is inteded to execute the same query multiple times with different arguments.

It's not possible to execute different queries...

@Transactional
public void serviceMethod(Object args) {
executeUpdate(); // database operation 1
executeUpdate(); // database operation 2
executeQuery(); // database operation 3
}...