来自 Spring JPA 查询的自定义结果

Question

I have a User class and I want to pull all the objects of that class from the database. I am using Spring Data JPA and fetching data using @Query . Is there a way I can hide partial digits of phone number of user. Something like converting 123-456-7890 to 123-XXX-XXXX.

 @Query(value = "SELECT u FROM User u ORDER BY u.name")
 List<User> getAllUsers();

I am using user object at multiple locationsin the code, so fetching and updating records everytime will be very time consuming and users will grow over the time so it will also affect the performance.

Is there any way(some post processors or anything) which can handle it while populating data into object after fething from database.

Any pointers will be very helpful.

Thanks.

Answer 1

You can convert your data when fetching using Attribute converter.

public class PhoneNumberAttributeConverter implements AttributeConverter<String, String> {
    @Override
    public String convertToDatabaseColumn(String value) {
        return value;
    }
    @Override
    public String convertToEntityAttribute(String a) {
        String value = a.substring(0, 3) + s.substring(3).replaceAll("[0-9]", "X");
        return value;
    }
}

And use it on field

@Convert(converter = PhoneNumberAttributeConverter.class)
private String phoneNumber;