/// <summary>
/// 从IIS缓存中获取指定条件的记录
/// </summary>
/// <param name="conditionColName">条件列名</param>
/// <param name="value">条件值</param>
/// <returns>DataAccess.Model.RefTable</returns>
public DataAccess.Model.RefTable GetModelForCache(string conditionColName, object value)
{
try
{
//从缓存中获取List
var list = GetList();
DataAccess.Model.RefTable model = null;
Expression <Func <RefTable, bool> > expression = null;
//返回指定条件的实体
switch (conditionColName)
{
case "Taxa_Id":
model = list.SingleOrDefault(x => x.Taxa_Id == (long)value);
expression = x => x.Taxa_Id == (long)value;
break;
case "Article_Id":
model = list.SingleOrDefault(x => x.Article_Id == (long)value);
expression = x => x.Article_Id == (long)value;
break;
default:
return(null);
}
if (model == null)
{
//从数据库中读取
var tem = RefTable.SingleOrDefault(expression);
if (tem == null)
{
return(null);
}
else
{
//对查询出来的实体进行转换
model = Transform(tem);
SetModelForCache(model);
return(model);
}
}
else
{
return(model);
}
}
catch (Exception e)
{
//记录日志
CommonBll.WriteLog("从IIS缓存中获取RefTable表记录时出现异常", e);
return(null);
}
}
/// <summary>
/// 给实体赋值
/// </summary>
/// <param name="model">实体</param>
/// <param name="dic">列名与值</param>
public void SetModelValue(DataAccess.Model.RefTable model, Dictionary <string, object> dic)
{
if (model == null || dic == null)
{
return;
}
//遍历字典，逐个给字段赋值
foreach (var d in dic)
{
SetModelValue(model, d.Key, d.Value);
}
}
/// <summary>
/// 将RefTable记录实体由普通的实体（DataAccess.Model.RefTable）转换为SubSonic插件生成的实体
/// </summary>
/// <param name="model">普通的实体（DataAccess.Model.RefTable）</param>
/// <returns>RefTable</returns>
public RefTable Transform(DataAccess.Model.RefTable model)
{
if (model == null)
{
return(null);
}
return(new RefTable
{
Taxa_Id = model.Taxa_Id,
Article_Id = model.Article_Id,
});
}
/// <summary>
/// 返回实体中指定字段名的值
/// </summary>
/// <param name="model">实体</param>
/// <param name="colName">获取的字段名</param>
/// <returns></returns>
private object GetFieldValue(DataAccess.Model.RefTable model, string colName)
{
if (model == null || string.IsNullOrEmpty(colName))
{
return(null);
}
//返回指定的列值
switch (colName)
{
case "Taxa_Id":
return(model.Taxa_Id);
case "Article_Id":
return(model.Article_Id);
}
return(null);
}
/// <summary>
/// 给实体赋值
/// </summary>
/// <param name="model">实体</param>
/// <param name="colName">列名</param>
/// <param name="value">值</param>
public void SetModelValue(DataAccess.Model.RefTable model, string colName, object value)
{
if (model == null || string.IsNullOrEmpty(colName))
{
return;
}
//返回指定条件的实体
switch (colName)
{
case "Taxa_Id":
model.Taxa_Id = (long)value;
break;
case "Article_Id":
model.Article_Id = (long)value;
break;
}
}
/// <summary>
/// 更新IIS缓存中指定Id记录
/// </summary>
/// <param name="model">记录实体</param>
public void SetModelForCache(DataAccess.Model.RefTable model)
{
if (model == null)
{
return;
}
//从缓存中删除记录
DelCache(model.Id);
//从缓存中读取记录列表
var list = GetList();
if (list == null)
{
list = new List <DataAccess.Model.RefTable>();
}
//添加记录
list.Add(model);
}
