如何在可编辑表中的字段上进行业务验证？

Here is the deal: I have a Table who uses a BeanItemContainer of "MyBean". "MyBean" is not really relevant, it contains only 1 String and 2 Date objects. But the user must be allowed to change theses values for each instance of MyBean in my container.Here is the deal: I have a Table who uses a Bea