How to search by embedded object in a CrudRepository?

Erik Rijcken :

Suppose I have an embeddable class, that is embedded in an entity class like below.

@Embeddable
public class FullName {
    private String firstName;
    private String lastName;
    // constructor, getters, setters, as needed
}

@Entity
public class Account {
    @Embedded
    private FullName fullName;
    // id, other data and methods
}

One person can have multiple accounts, hence the full name is not a key for the Account class. What I would like to have, is the following method in a jpa repository

public interface AccountRepository extends CrudRepository<Account, Long> {
    Collection<Account> findAllByFullName(FullName fullName);
}

Initially, I thought this would just work, but apparently it's not that simple. I could not get a method like this to work. The only thing I thought might help, was implement an equals method on FullName, saying that a FullName with same first and last name are equal, but this had no effect.

What I ended up doing for the moment is this:

public interface AccountRepository extends CrudRepository<Account, Long> {
    Collection<Account> findAllByFullNameFirstNameAndFullNameLastName(String firstName, String lastName);

    default Collection<Account> findAllByFullName(FullName fullName) {
        return findAllByFullNameFirstNameAndFullNameLastName(fullName.getFirstName(), fullName.getLastName());
    }
}

Is there a way for me to avoid creating this intermediary (visible) method?

Code_Mode :

You can use Example as below,

Collection<Account> findAll(Example< Account > account);

And then pass it as,

FullName fullName = new FullName(fname, lname);

Account acc = new Account();
acc.setFullName(fullName);
Collection<Account> accounts = accountRepository.findAll(Example.of(acc));

Hope it helps.