public IEnumerable <DisplayItem> GetTopCountries(TweetStorageSelectBy countType = TweetStorageSelectBy.All, int max = 10)
{
lock (_items) {
var res = (from item in _items
where SelectPredicate(countType)(item) && item.Country != TweetStorageItem.UnknownCountry
group item by item.Country into grp
orderby grp.Count() descending
select new DisplayItem {
Name = grp.Key, Value = grp.Count()
}).Take(max);
return(res.ToList());
}
}
private Func <TweetStorageItem, bool> SelectPredicate(TweetStorageSelectBy type = TweetStorageSelectBy.SkipErrors)
{
switch (type)
{
case TweetStorageSelectBy.All:
return((p) => true);
case TweetStorageSelectBy.SkipErrors:
return((p) => p.Status != TweetStorageItemStatus.Error);
case TweetStorageSelectBy.Analysed:
return((p) => p.Status == TweetStorageItemStatus.Analysed);
case TweetStorageSelectBy.ToAnalyse:
return((p) => p.Status == TweetStorageItemStatus.New);
case TweetStorageSelectBy.Error:
return((p) => p.Status == TweetStorageItemStatus.Error);
case TweetStorageSelectBy.Positive:
return((p) => p.Sentiment == AnalysisResultSentiment.Positive);
case TweetStorageSelectBy.Negative:
return((p) => p.Sentiment == AnalysisResultSentiment.Negative);
case TweetStorageSelectBy.Neutral:
return((p) => p.Sentiment == AnalysisResultSentiment.Neutral);
case TweetStorageSelectBy.Involvement:
return((p) => p.Sentiment != AnalysisResultSentiment.Neutral && p.Sentiment != AnalysisResultSentiment.Error);
case TweetStorageSelectBy.PositiveAndNegative:
return((p) => p.Sentiment == AnalysisResultSentiment.Positive || p.Sentiment == AnalysisResultSentiment.Negative);
case TweetStorageSelectBy.PositiveAndNegativeAndNeutral:
return((p) => p.Sentiment == AnalysisResultSentiment.Positive || p.Sentiment == AnalysisResultSentiment.Negative || p.Sentiment == AnalysisResultSentiment.Neutral);
default:
return((p) => false);
}
}
public int GetPercentage(TweetStorageSelectBy countType = TweetStorageSelectBy.Positive)
{
int all = 0;
switch (countType)
{
case TweetStorageSelectBy.All:
return(100);
case TweetStorageSelectBy.SkipErrors:
case TweetStorageSelectBy.Analysed:
case TweetStorageSelectBy.ToAnalyse:
case TweetStorageSelectBy.Error:
all = CountTweets(TweetStorageSelectBy.All);
break;
case TweetStorageSelectBy.Positive:
case TweetStorageSelectBy.Negative:
all = CountTweets(TweetStorageSelectBy.PositiveAndNegative);
break;
case TweetStorageSelectBy.Neutral:
case TweetStorageSelectBy.Involvement:
case TweetStorageSelectBy.PositiveAndNegative:
all = CountTweets(TweetStorageSelectBy.PositiveAndNegativeAndNeutral);
break;
case TweetStorageSelectBy.PositiveAndNegativeAndNeutral:
return(100);
default:
return(0);
}
if (all <= 0)
{
return(0);
}
return(Convert.ToInt32(Math.Round((Convert.ToDouble(CountTweets(countType)) / all) * 100.0)));
}
public int CountTweets(TweetStorageSelectBy type = TweetStorageSelectBy.SkipErrors)
{
lock (_items) {
return(_items.Count(SelectPredicate(type)));
}
}
