/// <summary>
/// 数据模型操作基础类
/// </summary>
/// <typeparam name="T">模型类型</typeparam>
/// <typeparam name="KT">主索引类型</typeparam>
public abstract class ModelLogicAdapter<T,KT> : System.MarshalByRefObject, IModelLogic where T:new()
{
#region IModelLogic 成员
private T mItem= new T();
public T Item
{
get
{
return mItem;
}
set
{
mItem = value;
}
}
public void Add()
{
OnCheckModel();
OnAdd();
}
public void Edit()
{
OnCheckModel();
OnEdit();
}
public void Load(KT index)
{
OnLoad(index);
}
public void Delete()
{
OnCheckModel();
OnDelete();
}
#endregion
protected virtual void OnAdd()
{
DAOContext.Add(Item);
}
protected virtual void OnDelete()
{
DAOContext.Delete(Item);
}
protected virtual void OnEdit()
{
DAOContext.Edit(Item);
}
protected virtual void OnLoad(KT index)
{
mItem = DAOContext.Load<T>(index);
}
protected virtual void OnCheckModel()
{
if(Item == null)
throw new LogicException("object is null!");
}
}
应用例程:
public class User:BaseModel<Entities.SysUser,string>
{
protected override void OnAdd()
{
if ((Entities.DBMapping.SysUser.UserCode == Item.UserCode).CountOf() > 0)
{
throw (new HFSoft.BusinessLogic.LogicException(Properties.Resources.USER_HAVED));
}
base.OnAdd();
}
private bool mLoadRoles = false;
/// <summary>
/// 是否加载相关用户角色
/// </summary>
public bool LoadRoles
{
get
{
return mLoadRoles;
}
set
{
mLoadRoles = value;
}
}
private List<Entities.Role> mRoles = new List<IDC.Entities.Role>();
public List<Entities.Role> Roles
{
get
{
return mRoles;
}
}
protected override void OnLoad(string index)
{
base.OnLoad(index);
if (LoadRoles)
{
mRoles = (Entities.DBMapping.Role.RoleUser == (
Entities.DBMapping.UserRole.UserCode == (string)index)).List<Entities.Role>();
}
}
}