泛型数据访问对象模式

GenericDAO
/**
 * 所有DAO都共享的CRUD(create, read, update, delete) 基本数据访问操作的定义
 */
public interface GenericDAO<T, ID extends Serializable,E extends Exception> {

	/**根据ID查询唯一对象*/
    T findById(ID id) throws E;
    
   /**  查询所有对象     */
    List<T> searchAll()  throws E;
    
    /** 条件查询*/
    List<T> search(T condition)  throws E;
    
    /**
     * 插入或修改
     */
    public void save(T entity) throws E;
    
    /**删除*/
    void delete(ID id)  throws E;
    
    void deleteBat(ID[] ids)  throws E;
    
}

IEmpDao

public interface IEmpDao extends GenericDAO<Employee, Integer,SQLException> {

}

EmpDao,//在方法体里面写上自己的具体方法实现即可！
public class EmpDao implements IEmpDao {

	public void delete(Integer id) throws SQLException {
	}

	public void deleteBat(Integer[] id) throws SQLException {
	}

	public Employee findById(Integer id) throws SQLException {
		return null;
	}

	public void save(Employee entity) throws SQLException {

	}

	public List<Employee> search(Employee condition) throws SQLException {
		return null;
	}

	public List<Employee> searchAll() throws SQLException {
		return null;
	}
}