是否存在可以使用类字段的此类约束（休眠验证程序）？

Question

I have class:

public class QueryFilterDTO {

@NotEmpty
private List<String> senders;

@NotEmpty
private List<String> subjects;

private Date startDate;
private Date endDate;

@NotEmpty
private List<String> countries;

@NotEmpty
private List<String> companySizes;

public QueryFilterDTO() {

}

And I need to do Date validation: startDate mustn't be greater than endDate . But I didn't find something like that in HV .

Should I implement it myself? ( custom constraints )

Answer 1

Probably the easiest way is like this:

@PrePersist
protected void validateDates() {
  if(startDate.after(endDate){
  //throw a new custom validation exception..
  }
}