In my current spring setup i would like to implement a slightly different architecture, here is my setup:
I have a "base" DAO interface, which lists all CRUD operations:
public interface BaseDao {
public boolean create(Object obj);
public List<Object> read();
public boolean update(Object obj);
public boolean delete(Object obj);
}
Next i have "specific" DAO interface, which extends from the "base" one:
public interface ArticleDao extends BaseDao {
public List<Article> getArticlesByAttribute(String attribute);
}
And finally, the Repository, which implements the interface:
public class ArticleDaoImpl implements ArticleDao {
public boolean create(Article article) {
// code
}
public List<Article> read() {
// code
}
public boolean update(Article article) {
// code
}
public boolean delete(Article article) {
// code
}
public List<Article> getArticlesByAttribute(String attribute) {
// code
}
}
So the idea is simple:
I want every Repository to implement all crud operations + "the methods from the specific dao-interface"
But i get the following error:
ArticleDaoImpl is not abstract and does not override
abstract method delete(java.lang.Object) in BaseDao
etc..
So this is probably because i defined Object as a parameter in the interface and "Article" as a parameter in the actual implementation..
Anybody got the idea how i can follow this pattern correctly? Should i consider working with generics?
Thanks and Greetings
