/// <summary>对指定字段使用实体缓存</summary>
/// <param name="field"></param>
public FieldCache(FieldItem field)
{
WaitFirst = false;
Expire = 10 * 60;
FillListMethod = () =>
{
return(Entity <TEntity> .FindAll(_field.GroupBy(), _Unique.Desc(), _Unique.Count()& _field, 0, MaxRows));
};
_field = field;
{
var tb = field.Table;
var id = tb.Identity;
if (id == null && tb.PrimaryKeys != null && tb.PrimaryKeys.Length == 1)
{
id = tb.PrimaryKeys[0];
}
if (id == null)
{
throw new Exception("{0}缺少唯一主键，无法使用缓存".F(tb.TableName));
}
_Unique = id;
}
}
/// <summary>对指定字段使用实体缓存</summary>
/// <param name="field"></param>
public FieldCache(FieldItem field)
{
WaitFirst = false;
Expire = 10 * 60;
FillListMethod = () =>
{
// 根据数量降序
var id = field.Table.Identity;
return(Entity <TEntity> .FindAll(field.GroupBy(), id.Desc(), id.Count()& field, 0, MaxRows));
};
_field = field;
}