public int SearchTypeLookup(string searchmethod)
{
//get stype from string methodname
Modules.SearchTypeLookupTable st = new Modules.SearchTypeLookupTable();
int stype = Array.FindIndex(st.searchType, s => s.Equals(searchmethod));
return(stype);
}
public IList <Posts> Search(int userid, string searchstring, int?searchtypecode, PagingAttributes pagingAttributes)
{
////// for performing searches with appsearch on the db
///
// do actual search using appsearch in db and build results
//need db context and searchtype lookuptable
using var db = new DatabaseContext();
Modules.SearchTypeLookupTable st = new Modules.SearchTypeLookupTable();
////get params for db.func
///
//build searchstring
var search = new NpgsqlParameter("search", NpgsqlTypes.NpgsqlDbType.Text)
{
Value = BuildSearchString(searchstring, false)
};
//lookup searchtype string
var searchtype = new NpgsqlParameter("searchtype", NpgsqlTypes.NpgsqlDbType.Text);
if (searchtypecode >= 0 && searchtypecode <= 3)
{
searchtype.Value = st.searchType[searchtypecode.Value];
}
else
{
searchtype.Value = st.searchType[3];
}
//userid
var appuserid = new NpgsqlParameter("appuserid", NpgsqlTypes.NpgsqlDbType.Integer)
{
Value = userid
};
//if internal call is specified, stored function appsearch won't add to searches/searchhistory
var internalcall = new NpgsqlParameter("internalcall", NpgsqlTypes.NpgsqlDbType.Boolean)
{
Value = true
};
//count all matches
var matchcount = db.Search
.FromSqlRaw("select appsearch(@appuserid, @searchtype, @search, @internalcall)", appuserid, searchtype, search, internalcall)
.Count();
System.Console.WriteLine($"{matchcount} results.");
int page = _sharedService.GetPagination(matchcount, pagingAttributes);
System.Console.WriteLine($"{page} page trying to get.");
//get subset of results according to pagesize etc
var resultlist = db.Search
.FromSqlRaw("SELECT * from appsearch(@appuserid, @searchtype, @search)", appuserid, searchtype, search)
.Skip(page * pagingAttributes.PageSize)
.Take(pagingAttributes.PageSize)
.ToList();
//build and map results to posts
var resultposts = new List <Posts>();
foreach (Search s in resultlist)
{
Posts p = new Posts();
SinglePost sp = new SinglePost();
sp = _sharedService.GetPost(s.postid);
p.Parentid = sp.QuestionId;
p.Id = sp.Id;
var endpos = 100;
if (sp.Body.Length < 100)
{
endpos = sp.Body.Length;
}
p.Body = sp.Body.Substring(0, endpos);
p.Title = _sharedService.GetQuestion(p.Parentid).Title;
p.Totalresults = matchcount;
p.Rank = s.rank;
resultposts.Add(p);
}
return(resultposts);
}
public IList <WordRank> WordRank(int userid, string searchstring, int searchtypecode, int?maxresults)
{
////// for performing searches with wordrank on the db
///
// do actual search using appsearch in db and build results
//need db context and searchtype lookuptable
using var db = new DatabaseContext();
Modules.SearchTypeLookupTable st = new Modules.SearchTypeLookupTable();
////get params for db.func
///
//build searchstring
var search = new NpgsqlParameter("search", NpgsqlTypes.NpgsqlDbType.Text)
{
Value = BuildSearchString(searchstring, false)
};
//lookup searchtype string
var searchtype = new NpgsqlParameter("searchtype", NpgsqlTypes.NpgsqlDbType.Text);
if (searchtypecode >= 4 && searchtypecode <= 5)
{
searchtype.Value = st.searchType[searchtypecode];
}
else
{
searchtype.Value = st.searchType[5];
}
//userid
var appuserid = new NpgsqlParameter("appuserid", NpgsqlTypes.NpgsqlDbType.Integer)
{
Value = userid
};
//if internal call is specified, stored function appsearch won't add to searches/searchhistory
var internalcall = new NpgsqlParameter("internalcall", NpgsqlTypes.NpgsqlDbType.Boolean)
{
Value = true
};
//count all matches
var matchcount = db.Search
.FromSqlRaw("select appsearch(@appuserid, @searchtype, @search, @internalcall)", appuserid, searchtype, search, internalcall)
.Count();
System.Console.WriteLine($"{matchcount} results.");
var limit = new NpgsqlParameter("limit", NpgsqlTypes.NpgsqlDbType.Integer)
{
Value = 1000
};
if (maxresults != null)
{
limit.Value = maxresults;
}
//call db.func wordrank
return(db.WordRank
.FromSqlRaw("SELECT * from wordrank(@appuserid, @searchtype, @search) limit @limit", appuserid, searchtype, search, limit)
.ToList());
}