/// <summary>
/// 添加试题集
/// </summary>
/// <param name="ques"></param>
/// <param name="expires"></param>
/// <returns>返回缓存的唯一标识</returns>
public string Add(Questions[] ques, int expires)
{
QuestionsCache_Item qcitem = new QuestionsCache_Item(ques, expires);
list.Add(qcitem);
return(qcitem.UID);
}
/// <summary>
/// 更新缓存
/// </summary>
/// <param name="ques">试题列表</param>
/// <param name="expires"></param>
/// <param name="uid"></param>
public string Update(Questions[] ques, int expires, string uid)
{
QuestionsCache_Item qci = GetCache(uid);
if (qci != null)
{
if (!string.IsNullOrWhiteSpace(uid))
{
qci.UID = uid;
}
if (expires > 0)
{
qci.Expires = expires;
}
if (ques != null)
{
qci.Questions = ques.ToList <Questions>();
}
}
else
{
qci = new QuestionsCache_Item(ques, expires);
qci.UID = uid;
this.list.Add(qci);
}
return(qci.UID);
}
/// <summary>
/// 添加试题集
/// </summary>
/// <param name="ques"></param>
/// <param name="expires"></param>
/// <returns>返回缓存的唯一标识</returns>
public string Add(Questions[] ques, int expires, string uid)
{
QuestionsCache_Item qcitem = new QuestionsCache_Item();
qcitem.Questions = ques.ToList <Questions>();
qcitem.Expires = expires;
qcitem.UID = uid;
list.Add(qcitem);
return(qcitem.UID);
}
/// <summary>
/// 获取答题信息
/// </summary>
/// <param name="uid"></param>
/// <returns></returns>
public ExamResults GetExamResults(string uid)
{
QuestionsCache_Item qci = this.GetCache(uid);
if (qci == null)
{
return(null);
}
return(qci.Result);
}
/// <summary>
/// 获取缓存中的试题集
/// </summary>
/// <param name="uid"></param>
/// <returns></returns>
public List <Questions> GetQuestions(string uid)
{
QuestionsCache_Item qci = this.GetCache(uid);
if (qci == null)
{
return(null);
}
return(qci.Questions);
}
/// <summary>
/// 获取缓存对象
/// </summary>
/// <param name="uid">用于区分缓存对象的uid</param>
/// <returns></returns>
public QuestionsCache_Item GetCache(string uid)
{
//先取缓存试题集
QuestionsCache_Item qci = null;
for (int i = 0; i < list.Count; i++)
{
if (uid == list[i].UID)
{
qci = list[i];
break;
}
}
return(qci);
}
/// <summary>
/// 获取缓存中的试题集
/// </summary>
/// <param name="uid"></param>
/// <returns></returns>
public List <Questions> GetQuestions(string uid)
{
QuestionsCache_Item qci = this.GetCache(uid);
if (uid == "all")
{
if (qci == null)
{
Song.Entities.Questions[] ques = Business.Do <IQuestions>().QuesCount(-1, null, -1);
this.Delete("all");
this.Add(ques, int.MaxValue, "all");
}
qci = this.GetCache(uid);
}
if (qci == null)
{
return(null);
}
return(qci.Questions);
}
/// <summary>
/// 更新缓存
/// </summary>
/// <param name="exr">答题内容</param>
/// <param name="expires"></param>
/// <param name="uid"></param>
/// <returns></returns>
public string Update(ExamResults exr, int expires, string uid)
{
QuestionsCache_Item qci = GetCache(uid);
if (qci != null)
{
if (!string.IsNullOrWhiteSpace(uid))
{
qci.UID = uid;
}
if (expires > 0)
{
qci.Expires = expires;
}
if (exr != null)
{
qci.Result = exr;
}
}
else
{
qci = new QuestionsCache_Item();
if (expires > 0)
{
qci.Expires = expires;
}
if (exr != null)
{
qci.Result = exr;
}
qci.UID = uid;
this.list.Add(qci);
}
//如果交卷
if (exr.Exr_IsSubmit && !exr.Exr_IsCalc)
{
qci.Calculate();
}
return(qci.UID);
}
/// <summary>
/// 添加试题集
/// </summary>
/// <param name="ques"></param>
/// <param name="expires"></param>
public void Add(List <Questions> ques, int expires)
{
QuestionsCache_Item qcitem = new QuestionsCache_Item(ques, expires);
list.Add(qcitem);
}