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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/AlbumStoreContext.cs
+104 -32
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@@ -27,6 +27,36 @@ namespace Icarus.Models.Context
#region Methods
public List<Album> GetAlbumWithoutCount()
{
var albums = new List<Album>();
if (AnyAlbums())
{
try
{
using (MySqlConnection conn = GetConnection())
{
conn.Open();
var query = "SELECT * FROM Album";
using (MySqlCommand cmd = new MySqlCommand(query, conn))
{
using (var reader = cmd.ExecuteReader())
{
albums = ParseData(reader);
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
}
return albums;
}
public List<Album> GetAlbums()
{
List<Album> albums = new List<Album>();
@@ -96,13 +126,54 @@ namespace Icarus.Models.Context
using (MySqlConnection conn = GetConnection())
{
conn.Open();
var query = "SELECT alb.*, COUNT(*) AS SongCount FROM Album alb " +
"LEFT JOIN Song sng ON alb.AlbumId=sng.AlbumId WHERE " +
"sng.Id=@Id LIMIT 1";
var query = "SELECT alb.*, 0 AS SongCount FROM Album alb " +
"WHERE alb.Title=@Title LIMIT 1";
using (MySqlCommand cmd = new MySqlCommand(query, conn))
{
cmd.Parameters.AddWithValue("@Id", song.Id);
Console.WriteLine($"Album title {song.AlbumTitle}");
cmd.Parameters.AddWithValue("@Title", song.AlbumTitle);
using (var reader = cmd.ExecuteReader())
{
album = ParseSingleData(reader);
}
}
}
}
catch (Exception ex)
{
var msg = ex.Message;
_logger.Error(msg, "An error occurred");
}
return album;
}
public Album GetAlbum(Song song, bool retrieveCount)
{
var album = new Album();
try
{
using (MySqlConnection conn = GetConnection())
{
conn.Open();
var query = string.Empty;
if (retrieveCount)
{
query = "SELECT alb.*, COUNT(*) AS SongCount FROM Album alb " +
"LEFT JOIN Song sng ON alb.AlbumId=sng.AlbumId WHERE " +
"alb.Title=@Title GROUP BY alb.AlbumId LIMIT 1";
}
else
{
query = "SELECT alb.*, 0 AS SongCount FROM Album alb WHERE " +
"alb.Title=@Title LIMIT 1";
}
using (MySqlCommand cmd = new MySqlCommand(query, conn))
{
cmd.Parameters.AddWithValue("@Title", song.AlbumTitle);
using (var reader = cmd.ExecuteReader())
{
@@ -124,23 +195,11 @@ namespace Icarus.Models.Context
{
try
{
album = GetAlbum(album);
if (!string.IsNullOrEmpty(album.Title))
{
_logger.Info("Album exists");
return true;
}
else
{
_logger.Info("Album does not exist");
}
/**
using (MySqlConnection conn = GetConnection())
{
conn.Open();
var query = "SELECT * FROM Album WHERE AlbumId=@AlbumId";
var query = "SELECT alb.*, 0 AS SongCount FROM Album alb WHERE alb.AlbumId=@AlbumId";
using (MySqlCommand cmd = new MySqlCommand(query, conn))
{
cmd.Parameters.AddWithValue("@AlbumId", album.AlbumId);
@@ -157,7 +216,6 @@ namespace Icarus.Models.Context
}
}
}
*/
}
catch (Exception ex)
{
@@ -170,23 +228,11 @@ namespace Icarus.Models.Context
{
try
{
var album = GetAlbum(song);
if (!string.IsNullOrEmpty(album.Title))
{
_logger.Info("Album exists");
return true;
}
else
{
_logger.Info("Album does not exist");
}
/**
using (MySqlConnection conn = GetConnection())
{
conn.Open();
var query = "SELECT * FROM Album WHERE Title=@Title";
var query = "SELECT alb.*, 0 AS SongCount FROM Album alb WHERE alb.Title=@Title";
using (MySqlCommand cmd = new MySqlCommand(query, conn))
{
cmd.Parameters.AddWithValue("@Title", song.AlbumTitle);
@@ -203,7 +249,6 @@ namespace Icarus.Models.Context
}
}
}
*/
}
catch (Exception ex)
{
@@ -334,6 +379,33 @@ namespace Icarus.Models.Context
return album;
}
private bool AnyAlbums()
{
var albums = new List<Album>();
using (var conn = GetConnection())
{
conn.Open();
var query = "SELECT * FROM Album";
using (var cmd = new MySqlCommand(query, conn))
{
using (var reader = cmd.ExecuteReader())
{
albums = ParseData(reader);
}
}
}
if (albums.Count > 0)
{
return true;
}
return false;
}
#endregion
}
}