/// <summary>
/// 获取竞赛题目列表
/// </summary>
/// <param name="cid">竞赛ID</param>
/// <returns>竞赛题目列表</returns>
public static List <ContestProblemEntity> GetContestProblemList(Int32 cid)
{
List <ContestProblemEntity> list = ContestProblemCache.GetContestProblemListCache(cid);//获取缓存
if (list == null)
{
list = ContestProblemRepository.Instance.GetEntities(cid);
ContestProblemCache.SetContestProblemListCache(cid, list);//设置缓存
}
return(list);
}
/// <summary>
/// 根据ID得到一个题目实体
/// </summary>
/// <param name="cid">竞赛ID</param>
/// <param name="pid">题目ID</param>
/// <returns>题目实体</returns>
public static ProblemEntity GetProblem(Int32 cid, Int32 pid)
{
ProblemEntity problem = ContestProblemCache.GetContestProblemCache(cid, pid);//获取缓存
if (problem == null)
{
problem = ProblemRepository.Instance.GetEntityForContest(cid, pid);
ContestProblemCache.SetContestProblemCache(cid, pid, problem);//设置缓存
}
if (problem == null)
{
throw new NullResponseException(RequestType.Problem);
}
return(problem);
}
/// <summary>
/// 设置竞赛题目列表
/// </summary>
/// <param name="cid">竞赛ID</param>
/// <param name="problemids">题目ID列表</param>
/// <returns>是否成功设置</returns>
public static IMethodResult AdminSetContestProblemList(Int32 cid, String problemids)
{
if (!AdminManager.HasPermission(PermissionType.ContestManage))
{
throw new NoPermissionException();
}
if (String.IsNullOrEmpty(problemids))
{
problemids = "";
}
String[] ids = problemids.Lines();
List <Int32> problemIDs = new List <Int32>();
for (Int32 i = 0; i < ids.Length; i++)
{
Int32 pid = 0;
if (!String.IsNullOrEmpty(ids[i].Trim()) && Int32.TryParse(ids[i].Trim(), out pid))
{
problemIDs.Add(pid);
}
}
ContestProblemCache.RemoveContestProblemListCache(cid);//删除缓存
try
{
Boolean success = ContestProblemRepository.Instance.InsertEntities(cid, problemIDs) > 0;
if (!success)
{
return(MethodResult.FailedAndLog("No contest problem was updated!"));
}
return(MethodResult.SuccessAndLog("Admin add contest problem, cid = {0}, pid = {1}", cid.ToString(), String.Join(",", ids)));
}
catch (DbException)
{
return(MethodResult.FailedAndLog("Failed to add these problems, please check whether the problem ids are all correct."));
}
}