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define a service to expose typical CRUD operations

Sumit Rawal answered on August 25, 2023 Popularity 1/10 Helpfulness 1/10

answer define a service to expose typical CRUD operations

define a service to expose typical CRUD operations

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public class UserService {
    private UserRepository repository;
    public UserService(UserRepository repository) {
        this.repository = repository;
    }

    public void createUser(String userId, String firstName, String lastName) {
        User user = new User(userId, firstName, lastName);
        repository.addUser(userId, user);
    }

    public void updateUser(String userId, Set<Contact> contacts, Set<Address> addresses) {
        User user = repository.getUser(userId);
        user.setContacts(contacts);
        user.setAddresses(addresses);
        repository.addUser(userId, user);
    }

    public Set<Contact> getContactByType(String userId, String contactType) {
        User user = repository.getUser(userId);
        Set<Contact> contacts = user.getContacts();
        return contacts.stream()
          .filter(c -> c.getType().equals(contactType))
          .collect(Collectors.toSet());
    }

    public Set<Address> getAddressByRegion(String userId, String state) {
        User user = repository.getUser(userId);
        Set<Address> addresses = user.getAddresses();
        return addresses.stream()
          .filter(a -> a.getState().equals(state))
          .collect(Collectors.toSet());
    }
}
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Popularity 1/10 Helpfulness 1/10 Language java

Source: www.baeldung.com

Tags: crud java operations service

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Contributed on Aug 25 2023

Sumit Rawal

0 Answers Avg Quality 2/10

define a service to expose typical CRUD operations

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