/// <summary>
        /// Check if votes is exists.
        /// </summary>
        /// <param name="poll">The poll.</param>
        /// <returns></returns>
        public virtual bool VoteExists(PollItem poll)
        {
            IQueryable <string> sessionPolls;
            IQueryable <string> trackerPols;
            var pollCache = new PollVotesCache();

            trackerPols  = pollCache.SessionPolls;
            sessionPolls = pollCache.SessionPolls;
            if (sessionPolls == null)
            {
                trackerPols = (from pe in Tracker.DataContext.PageEvents
                               where pe.DataKey == poll.Name
                               select new string(pe.DataKey.ToCharArray())).AsQueryable <string>();
                if (trackerPols.Count() == 0)
                {
                    var analyticsGlobalCookie = WebUtil.GetCookieValue("SC_ANALYTICS_GLOBAL_COOKIE");
                    var analyticsContext      = new DMSPollData.Analytics.Data.AnalyticsDataContext();
                    sessionPolls =
                        (from pageEvent in analyticsContext.PageEvents
                         join page in analyticsContext.Pages on pageEvent.PageId equals page.PageId
                         join session in analyticsContext.Visits on page.VisitId equals session.VisitId
                         join globalSession in analyticsContext.Visitors on session.VisitorId equals
                         globalSession.VisitorId
                         where pageEvent.PageEventDefinitionId == PollConstants.PollPageEventDefinitionID.ToGuid() &&
                         globalSession.VisitorId.ToString().Replace("-", "").Replace("{", "").Replace("}", "").ToLower() == analyticsGlobalCookie
                         select new string(pageEvent.DataKey.ToCharArray())).Distinct();

                    pollCache.CacheSessionPolls(sessionPolls);
                }
                else
                {
                    pollCache.CacheSessionPolls(trackerPols);
                }
            }
            var exists = false;

            if (sessionPolls != null)
            {
                var list = sessionPolls.ToList();
                exists = list.Contains(poll.Name);
            }
            else if (trackerPols != null)
            {
                var list = trackerPols.ToList();
                exists = list.Contains(poll.Name);
            }

            return(exists);
        }
        /// <summary>
        /// Gets the votes list.
        /// </summary>
        /// <param name="poll">The poll.</param>
        /// <returns></returns>
        private static IQueryable <DMSPollData.Analytics.PageEvent> GetVotesList(PollItem poll)
        {
            var pollCache = new PollVotesCache();

            IQueryable <DMSPollData.Analytics.PageEvent> pageEvents = pollCache.PageEvents;

            if (pageEvents == null)
            {
                var analyticsContext = new DMSPollData.Analytics.Data.AnalyticsDataContext();
                pageEvents =
                    analyticsContext.PageEvents.Where(
                        pageEvent =>
                        (pageEvent.PageEventDefinitionId == PollConstants.PollPageEventDefinitionID.ToGuid()) &&
                        (pageEvent.DataKey == poll.Name));
                pollCache.CachePageEvents(pageEvents);
            }

            return(pageEvents);
        }
        /// <summary>
        /// Check if votes is exists.
        /// </summary>
        /// <param name="poll">The poll.</param>       
        /// <returns></returns>
        public virtual bool VoteExists(PollItem poll)
        {
            IQueryable<string> sessionPolls;
            IQueryable<string> trackerPols;
            var pollCache = new PollVotesCache();
            trackerPols = pollCache.SessionPolls;
            sessionPolls = pollCache.SessionPolls;
            if (sessionPolls == null)
            {
                trackerPols = (from pe in Tracker.DataContext.PageEvents
                                  where pe.DataKey == poll.Name
                                  select new string(pe.DataKey.ToCharArray())).AsQueryable<string>();
                if (trackerPols.Count() == 0)
                {
                    var analyticsGlobalCookie = WebUtil.GetCookieValue("SC_ANALYTICS_GLOBAL_COOKIE");
                    var analyticsContext = new DMSPollData.Analytics.Data.AnalyticsDataContext();
                    sessionPolls =
                        (from pageEvent in analyticsContext.PageEvents
                         join page in analyticsContext.Pages on pageEvent.PageId equals page.PageId
                         join session in analyticsContext.Visits on page.VisitId equals session.VisitId
                         join globalSession in analyticsContext.Visitors on session.VisitorId equals
                             globalSession.VisitorId
                         where pageEvent.PageEventDefinitionId == PollConstants.PollPageEventDefinitionID.ToGuid()
                               && globalSession.VisitorId.ToString().Replace("-", "").Replace("{", "").Replace("}", "").ToLower() == analyticsGlobalCookie
                         select new string(pageEvent.DataKey.ToCharArray())).Distinct();

                    pollCache.CacheSessionPolls(sessionPolls);
                }
                else
                {
                    pollCache.CacheSessionPolls(trackerPols);
                }

            }
            var exists = false;

            if (sessionPolls != null)
            {
                var list = sessionPolls.ToList();
                exists = list.Contains(poll.Name);
            }else if (trackerPols != null)
            {
                var list = trackerPols.ToList();
                exists = list.Contains(poll.Name);
            }

            return exists;
        }
        /// <summary>
        /// Gets the votes list.
        /// </summary>
        /// <param name="poll">The poll.</param>
        /// <returns></returns>
        private static IQueryable<DMSPollData.Analytics.PageEvent> GetVotesList(PollItem poll)
        {
            var pollCache = new PollVotesCache();

            IQueryable<DMSPollData.Analytics.PageEvent> pageEvents = pollCache.PageEvents;
            if (pageEvents == null)
            {
                var analyticsContext = new DMSPollData.Analytics.Data.AnalyticsDataContext();
                pageEvents =
                    analyticsContext.PageEvents.Where(
                        pageEvent =>
                        (pageEvent.PageEventDefinitionId == PollConstants.PollPageEventDefinitionID.ToGuid()) &&
                        (pageEvent.DataKey == poll.Name));
                pollCache.CachePageEvents(pageEvents);
            }

            return pageEvents;
        }