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Song Count for corresponding tables are calcuated when retrieved #47

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This commit is contained in:
amazing-username
2019-05-25 20:48:40 +00:00
parent e1627b04b9
commit c8578ae8c8
7 changed files with 478 additions and 164 deletions
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Models/Context/GenreStoreContext.cs
+183 -47
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@@ -28,33 +28,74 @@ namespace Icarus.Models.Context
#region Methods
public List<Genre> GetGenresWithoutCount()
{
_logger.Info("Retrieving all genre records without song counts");
var genres = new List<Genre>();
if (AnyGenre())
{
try
{
using (var conn = GetConnection())
{
conn.Open();
var query = "SELECT * FROM Genre";
using (var cmd = new MySqlCommand(query, conn))
{
using (var reader = cmd.ExecuteReader())
{
genres = ParseData(reader);
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
}
return genres;
}
public List<Genre> GetGenres()
{
_logger.Info("Retrieving Genre records");
var genres = new List<Genre>();
try
if (AnyGenre())
{
using (var conn = GetConnection())
try
{
conn.Open();
var query = "SELECT * FROM Genre";
using (var cmd = new MySqlCommand(query, conn))
using (var conn = GetConnection())
{
using (var reader = cmd.ExecuteReader())
conn.Open();
var query = "SELECT gnr.*, COUNT(*) AS SongCount FROM Genre " +
"gnr LEFt JOIN Song sng ON gnr.GenreId=sng.GenreId " +
"GROUP BY gnr.GenreId";
using (var cmd = new MySqlCommand(query, conn))
{
genres = ParseData(reader);
using (var reader = cmd.ExecuteReader())
{
genres = ParseData(reader);
}
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
}
return genres;
@@ -64,29 +105,34 @@ namespace Icarus.Models.Context
{
_logger.Info("Retrieving Genre record");
try
if (DoesGenreExist(genre))
{
using (var conn = GetConnection())
try
{
conn.Open();
var query = "SELECT * FROM Genre WHERE GenreId=@GenreId";
using (var cmd = new MySqlCommand(query, conn))
using (var conn = GetConnection())
{
cmd.Parameters.AddWithValue("@GenreId", genre.GenreId);
conn.Open();
using (var reader = cmd.ExecuteReader())
var query = "SELECT gnr.*, COUNT(*) AS SongCount FROM Genre " +
"gnr LEFT JOIN Song sng ON gnr.GenreId=sng.GenreId " +
"WHERE gnr.GenreId=@GenreId";
using (var cmd = new MySqlCommand(query, conn))
{
genre = ParseSingleData(reader);
cmd.Parameters.AddWithValue("@GenreId", genre.GenreId);
using (var reader = cmd.ExecuteReader())
{
genre = ParseSingleData(reader);
}
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
}
return genre;
@@ -97,29 +143,84 @@ namespace Icarus.Models.Context
var genre = new Genre();
try
if (DoesGenreExist(song))
{
using (var conn = GetConnection())
try
{
conn.Open();
var query = "SELECT * FROM Genre WHERE GenreName=@GenreName";
using (var cmd = new MySqlCommand(query, conn))
using (var conn = GetConnection())
{
cmd.Parameters.AddWithValue("@GenreName", song.Genre);
conn.Open();
using (var reader = cmd.ExecuteReader())
var query = "SELECT gnr.*, 0 AS SongCount FROM Genre " +
"gnr WHERE gnr.GenreName=@GenreName";
using (var cmd = new MySqlCommand(query, conn))
{
genre = ParseSingleData(reader);
cmd.Parameters.AddWithValue("@GenreName", song.Genre);
_logger.Info($"Song genre:\n\n\n {song.Genre}");
using (var reader = cmd.ExecuteReader())
{
genre = ParseSingleData(reader);
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
}
catch (Exception ex)
return genre;
}
public Genre GetGenre(Song song, bool retrieveCount)
{
_logger.Info("Retrieving Genre record");
var genre = new Genre();
if (DoesGenreExist(song))
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
try
{
using (var conn = GetConnection())
{
conn.Open();
var query = string.Empty;
if (retrieveCount)
{
query = "SELECT gnr.*, 0 AS SongCount FROM Genre gnr " +
"LEFT JOIN Song sng ON gnr.GenreId=sng.GenreId " +
"WHERE gnr.GenreName=@GenreName GROUP BY gnr.GenreId " +
"LIMIT 1";
}
else
{
query = "SELECT gnr.*, 0 AS SongCount FROM Genre gnr " +
"WHERE gnr.GenreName=@GenreName LIMIT 1";
}
using (var cmd = new MySqlCommand(query, conn))
{
cmd.Parameters.AddWithValue("@GenreName", song.Genre);
_logger.Info($"Song genre:\n\n\n {song.Genre}");
using (var reader = cmd.ExecuteReader())
{
genre = ParseSingleData(reader);
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
}
return genre;
@@ -135,7 +236,8 @@ namespace Icarus.Models.Context
{
conn.Open();
var query = "SELECT * FROM Genre WHERE GenreId=@GenreId";
var query = "SELECT gnr.*, 0 AS SongCount FROM Genre gnr WHERE " +
"gnr.GenreId=@GenreId";
using (var cmd = new MySqlCommand(query, conn))
{
@@ -172,13 +274,12 @@ namespace Icarus.Models.Context
try
{
var genre = ParseSingleData(song);
using (var conn = GetConnection())
{
conn.Open();
var query = "SELECT * FROM Genre WHERE GenreName=@GenreName";
var query = "SELECT gnr.*, 0 AS SongCount FROM Genre gnr WHERE " +
"gnr.GenreName=@GenreName";
using (var cmd = new MySqlCommand(query, conn))
{
@@ -198,7 +299,6 @@ namespace Icarus.Models.Context
}
}
}
*/
}
catch (Exception ex)
{
@@ -335,6 +435,42 @@ namespace Icarus.Models.Context
return genre;
}
private bool AnyGenre()
{
try
{
using (var conn = GetConnection())
{
conn.Open();
var query = "SELECT * FROM Genre";
using (var cmd = new MySqlCommand(query, conn))
{
using (var reader = cmd.ExecuteReader())
{
var genres = ParseData(reader);
if (genres.Count > 0)
{
_logger.Info("Genres records");
return true;
}
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
_logger.Info("No genre records found");
return false;
}
#endregion
}
}