package io.spring.core.service; import io.spring.core.article.Article; import io.spring.core.comment.Comment; import io.spring.core.user.User; public class AuthorizationService { public static boolean canWriteArticle(User user, Article article) { return user.getId().equals(article.getUserId()); } public static boolean canWriteComment(User user, Article article, Comment comment) { return user.getId().equals(article.getUserId()) || user.getId().equals(comment.getUserId()); } }