How to call a method for "value" attribute of cacheable annotation in Java Spring

Question

I have this abstract repository class:

public abstract class FirestoreRepository<T> {
    protected Firestore db;

    protected FirestoreRepository(Firestore db) {
        this.db = db;
    }

    @Cacheable(value = , key = "#id")
    public Optional<T> findDocumentWithId(@Nonnull String id) throws InterruptedException, ExecutionException {
        DocumentSnapshot doc = db.collection(getCollection()).document(id).get().get();
        return Optional.ofNullable(doc.exists() ? doc.toObject(getEntityClass()) : null);
    }

    public abstract @Nonnull String getCollection();


...
}

And I do have multiple repository implementations that inherit from the above class.

@Service
public class UserRepository extends FirestoreRepository<User> {

    @Autowired
    public UserRepository(Firestore db) {
        super(db);
    }
    
    @Override
    public @Nonnull String getCollection() {
        return FirestoreConstants.USERS_COLLECTIONS_NAME;
    }


...
}

I want to call getCollection() method, in here like this for example: @Cacheable(value = "#getCollection()", key = "#id")

butterCup · Accepted Answer · 2023-08-08 07:17:01Z

0

 @Cacheable(value = "{#root.target.getCollection()}", key = "#id")

#root.target.getCollection() to call the getCollection() method. In this case, root target object would be the UserRepository object.

answered Aug 8, 2023 at 7:17

butterCup

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2 Comments

Jeremy Caney Over a year ago

Thank you for contributing to the Stack Overflow community. This may be a correct answer, but it’d be really useful to provide additional explanation of your code so developers can understand your reasoning. This is especially useful for new developers who aren’t as familiar with the syntax or struggling to understand the concepts. Would you kindly edit your answer to include additional details for the benefit of the community?

quasimodo Over a year ago

Thanks for the answer. But this is not working.

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