java - How to assert only if the property to assert is not empty?

Question

How can I Hibernate validate a property that may also be empty? And more important: only validate IF the property is not empty, otherwise SKIP the validation?

private int age;
@AssertTrue(condition = "age != null") //something like this
boolean isAgeValid() {
     return age >= 0;
}

Is there any possibility?

Answer 1

嗯好的，因为在注释级别无法克服这个问题，我将其更改为以下内容：

@AssertTrue
private boolean isAgeValid() {
     return StringUtils.isBlank(age) || age >= 0;
}

可能是目前最好的选择。