JavaEE 3层架构的 DAO, Service, Web 简单封装
2009-11-17 00:00:00 来源:WEB开发网实现的逻辑大体是
GeneralDAO(Interface). AbstractGeneralDAOImpl(Abstract class), GeneralService(Interface), AbstractGeneralServiceImpl(Abstract class).
具体
IDAO extends GeneralDAO,
IDAOImpl extends AbstractGeneralDAOImpl,
IService extends GeneralService,
IServiceImpl extends AbstractGeneralServiceImpl
实现代码如下.
GeneralDAO<T, ID extends Serializable>
1: import java.io.Serializable;
2: import java.util.Collection;
3: import java.util.List;
4:
5: import PagingVO;
6:
7: /**
8: * General DAO
9: *
10: * @author Hacker-TTAO
11: * @version 0.1.0
12: */
13: public interface GeneralDAO<T, ID extends Serializable> {
14:
15: T findByID(ID id);
16:
17: List<T> findAll();
18:
19: PagingVO getPagingData(int currentPage, int pageSize);
20:
21: T save(T entity);
22:
23: void save(T... entity);
24:
25: T update(T entity);
26:
27: void update(Collection<T> entity);
28:
29: void saveOrUpdate(T entity);
30:
31: void saveOrUpdate(Collection<T> entities);
32:
33: void delete(T entity);
34:
35: void delete(ID id);
36:
37: void delete(Collection<T> entities);
38:
39: void marge(T eneity);
40:
41: void marge(T... eneity);
42:
43: int getCount();
44: }
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