/**
* Returns credentials of the given user, returns null if there are none.
*
* @param userId The id of the user.
* @return A credential object or null.
*/
public Credential get(String userId) {
Credential credential = buildEmpty();
if (credentialStore.load(userId, credential)) {
return credential;
}
return null;
}
/**
* Saves credentials of the given user.
*
* @param userId The id of the user.
* @param credential A credential object to save.
*/
public void save(String userId, Credential credential) {
credentialStore.store(userId, credential);
}
/**
* Deletes credentials of the given user.
*
* @param userId The id of the user.
*/
public void delete(String userId) {
credentialStore.delete(userId, get(userId));
}