数据编辑基类模板

/// <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>();

}

}

}