public int GetNumberOfPosts()
{
using (var db = new SovaContext())
{
return(db.post.Count());
}
}
public int GetNumberOfComments()
{
using (var db = new SovaContext())
{
return(db.comment.Count());
}
}
public PostExtended GetPostDetail(int id)
{
using (var db = new SovaContext())
{
var getParentId = from a in db.answer
where a.ParentId == id
select a.PostId;
//select posts.postBody from posts
//where postID in (select answers.postID
//from answers
//where answers.parentID = id);
var getAnswerList = (from item in db.post where getParentId.Contains(item.PostId) select item.PostBody).ToList();
var result = (from p in db.post
where !db.answer.Any(f => f.PostId == p.PostId)
where p.PostId == id
select new PostExtended
{
PostId = p.PostId,
Title = p.Question.Title,
Score = p.Score,
PostBody = p.PostBody,
CreatedDate = p.CreatedDate,
UserName = p.User.UserName,
Answers = getAnswerList
}).FirstOrDefault();
return(result);
}
}
public int GetNumberOfMarkings()
{
using (var db = new SovaContext())
{
return(db.marking.Count());
}
}
public int GetNumberOfUsers()
{
using (var db = new SovaContext())
{
return(db.user.Count());
}
}
public int GetNumberOfHistories()
{
using (var db = new SovaContext())
{
return(db.history.Count());
}
}
public int GetNumberOfAnnotations()
{
using (var db = new SovaContext())
{
return(db.annotation.Count());
}
}
public User GetUser(int id)
{
using (var db = new SovaContext())
{
return((from u in db.user
where u.UserId == id
select u).FirstOrDefault());
}
}
public Annotation GetAnnotation(int id)
{
using (var db = new SovaContext())
{
var result = (from p in db.annotation
where p.AnnotationId == id
select p).FirstOrDefault();
return(result);
}
}
public Marking GetMarking(int id)
{
using (var db = new SovaContext())
{
var result = (from p in db.marking
where p.PostId == id
select p).FirstOrDefault();
return(result);
}
}
public Annotation AddAnnotation(Annotation annotation)
{
using (var db = new SovaContext())
{
//annotation.AnnotationId = db.annotation.Max(c => c.AnnotationId) + 1;
db.Add(annotation);
db.SaveChanges();
}
return(GetAnnotation(annotation.AnnotationId));
}
//======= CRUD on annotations =============
public IList <Annotation> GetAnnotation(int page, int pagesize)
{
using (var db = new SovaContext())
{
var tmp = (from a in db.annotation
select a)
.OrderBy(o => o.AnnotationId)
.Skip(page * pagesize)
.Take(pagesize)
.ToList();
return(tmp);
}
}
public bool DeleteAnnotation(int id)
{
using (var db = new SovaContext())
{
var annotation = db.annotation.FirstOrDefault(c => c.AnnotationId == id);
if (annotation == null)
{
return(false);
}
db.Remove(annotation);
return(db.SaveChanges() > 0);
}
}
//======= Get users =============
public IList <User> GetUser(int page, int pagesize)
{
using (var db = new SovaContext())
{
var tmp = (from u in db.user
select u)
.OrderBy(o => o.UserId)
.Skip(page * pagesize)
.Take(pagesize)
.ToList();
return(tmp);
}
}
//======= CRUD on markings =============
public IList <Marking> GetMarking(int page, int pagesize)
{
using (var db = new SovaContext())
{
var tmp = (from a in db.marking
select a)
.OrderBy(o => o.PostId)
.Skip(page * pagesize)
.Take(pagesize)
.ToList();
return(tmp);
}
}
//======= Search posts =============
public IList <WeightedSearch> GetSearchedPost(string keyword1)
{
using (var db = new SovaContext())
{
var result = db.weightedSearch.FromSql("call weighted_Search({0})", keyword1);
var result1 = new List <WeightedSearch>();
foreach (var data in result)
{
result1.Add(data);
}
return(result1);
}
}
//Get weighted word list for word cloud
public IList <WordCloud> GetWordCloud(string word)
{
using (var db = new SovaContext())
{
var wordlist = db.wordCloud.FromSql("call weighted_Wordlist({0})", word);
var result = new List <WordCloud>();
foreach (var data in wordlist.Take(50))
{
result.Add(data);
}
return(result);
}
}
//======= Get tags related to a post =============
public IList <Tag> GetPostTag(int id)
{
using (var db = new SovaContext())
{
var result = (from t in db.tag
where t.PostId == id
select new Tag
{
PostId = t.PostId,
TagName = t.TagName
}).ToList();
return(result);
}
}
public IList <BestMatchSearch> GetAllMatchPostsWithKeyword(string keyword)
{
using (var db = new SovaContext())
{
var bestMatch = db.bestMatchSearch.FromSql("call binary_Search({0})", keyword);
var result = new List <BestMatchSearch>();
foreach (var data in bestMatch)
{
result.Add(data);
}
return(result);
}
}
public History GetHistory(int id)
{
using (var db = new SovaContext())
{
return((from h in db.history
where h.sId == id
select new History
{
sId = h.sId,
SearchString = h.SearchString,
SearchTime = h.SearchTime
}).FirstOrDefault());
}
}
public bool UpdateMarking(Marking marking)
{
using (var db = new SovaContext())
try
{
db.Attach(marking);
db.Entry(marking).State = EntityState.Modified;
return(db.SaveChanges() > 0);
}
catch (DbUpdateConcurrencyException)
{
return(false);
}
}
public bool UpdateAnnotation(Annotation annotation)
{
using (var db = new SovaContext())
try
{
annotation.AnnotationCreationDate = db.GetTimestamp();
db.Attach(annotation);
db.Entry(annotation).State = EntityState.Modified;
return(db.SaveChanges() > 0);
}
catch (DbUpdateConcurrencyException)
{
return(false);
}
}
public IList <SearchResult> GetProcedureList(int page, int pageSize, string word1, string word2, string word3, bool questionSearch)
{
List <SearchResult> results = new List <SearchResult>();
using (SovaContext db = new SovaContext())
{
if (questionSearch)
{
var resultOfQuestionSearch = db.Set <SearchResult>()
.FromSql("call questionSearch({0},{1},{2})", new[] { word1, word2, word3 })
.Skip(page * pageSize)
.Take(pageSize);
foreach (var data in resultOfQuestionSearch)
{
SearchResult tmp = new SearchResult {
};
tmp.PostId = data.PostId;
tmp.PostTitle = data.PostTitle;
tmp.PostScore = data.PostScore;
tmp.PostText = data.PostText;
tmp.Rank = data.Rank;
results.Add(tmp);
}
}
else
{
var resultOfAnswerSearch = db.Set <SearchResult>()
.FromSql("call answerSearch({0},{1},{2})", new[] { word1, word2, word3 })
.Skip(page * pageSize)
.Take(pageSize);
foreach (var data in resultOfAnswerSearch)
{
SearchResult tmp = new SearchResult {
};
tmp.PostId = data.PostId;
tmp.PostTitle = data.PostTitle;
tmp.PostScore = data.PostScore;
tmp.PostText = data.PostText;
tmp.Rank = data.Rank;
results.Add(tmp);
}
}
return(results);
}
}
//======= Get history =============
public IList <History> GetHistory(int page, int pagesize)
{
using (var db = new SovaContext())
{
var tmp = (from h in db.history
select new History
{
sId = h.sId,
SearchString = h.SearchString,
SearchTime = h.SearchTime
}).OrderBy(o => o.sId)
.Skip(page * pagesize)
.Take(pagesize)
.ToList();
return(tmp);
}
}
//======= Get question posts as a list =============
public List <PostExtended> GetListOfPosts(int page, int pagesize)
{
using (var db = new SovaContext())
{
var list = (from p in db.post
where !db.answer.Any(f => f.PostId == p.PostId) //select those which are post questions, not answers
select new PostExtended
{
PostId = p.PostId,
Title = p.Question.Title,
UserName = p.User.UserName
}).OrderBy(o => o.PostId)
.Skip(page * pagesize)
.Take(pagesize)
.ToList();
return(list);
}
}
public CommentExtended GetComment(int id)
{
using (var db = new SovaContext())
{
return((from c in db.comment
where c.CommentId == id
select new CommentExtended
{
CommentId = c.CommentId,
PostId = c.PostId,
UserId = c.UserId,
CommentBody = c.CommentBody,
PostTitle = c.Post.Question.Title,
CommentCreationDate = c.CommentCreationDate,
UserName = c.User.UserName
}).FirstOrDefault());
}
}
public IList <FrequentWord> GetProcedureList(int page, int pageSize, string word1, string word2, string word3, bool questionSearch)
{
List <FrequentWord> results = new List <FrequentWord>();
using (SovaContext db = new SovaContext())
{
if (questionSearch)
{
var something = db.Set <FrequentWord>()
.FromSql("call relevantQuestionWords({0},{1},{2})", new[] { word1, word2, word3 })
.Skip(page * pageSize)
.Take(pageSize);
foreach (var data in something)
{
FrequentWord tmp = new FrequentWord {
};
tmp.Frequency = data.Frequency;
tmp.Word = data.Word;
results.Add(tmp);
}
}
else
{
var something = db.Set <FrequentWord>()
.FromSql("call relevantAnswerWords({0},{1},{2})", new[] { word1, word2, word3 })
.Skip(page * pageSize)
.Take(pageSize);
foreach (var data in something)
{
FrequentWord tmp = new FrequentWord {
};
tmp.Frequency = data.Frequency;
tmp.Word = data.Word;
results.Add(tmp);
}
}
return(results);
}
}
//======= CRUD on Comment Table =============
public IList <CommentExtended> GetComment(int page, int pagesize)
{
using (var db = new SovaContext())
{
var tmp = (from c in db.comment
select new CommentExtended
{
CommentId = c.CommentId,
PostId = c.PostId,
UserId = c.UserId,
CommentBody = c.CommentBody,
PostTitle = c.Post.Question.Title,
CommentCreationDate = c.CommentCreationDate,
UserName = c.User.UserName
}).OrderBy(o => o.CommentId)
.Skip(page * pagesize)
.Take(pagesize)
.ToList();
return(tmp);
}
}
public IList <SearchedResult> GetAllMatchPostsWithKeyword(string keyword)
{
using (var db = new SovaContext())
{
var conn = (MySqlConnection)db.Database.GetDbConnection();
conn.Open();
var cmd = new MySqlCommand("call post", conn);
var result = new List <SearchedResult>();
using (var rdr = cmd.ExecuteReader())
{
while (rdr.Read())
{
result.Add(new SearchedResult()
{
PostId = rdr.GetInt16(0),
Score = rdr.GetInt16(2),
PostBody = rdr.GetString(1),
UserId = rdr.GetInt16(3)
});
}
}
return(result.ToList());
}
}
public UserDataService(SovaContext db)
{
this.db = db;
}
