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author | k-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2008-08-27 13:28:57 +0000 |
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committer | k-m_schindler <k-m_schindler@b956fd51-792f-4845-bead-9b4dfca2ff2c> | 2008-08-27 13:28:57 +0000 |
commit | 1ba91d5a0e1df7419a561f6dcf16a0839509a5e7 (patch) | |
tree | 3f76e96fc5a3f5b738dabce28642ff2415748ccb /Game/Code/Classes/UDataBase.pas | |
parent | e9fd8ce40b4cbf006695fd6e56f84071407843c9 (diff) | |
download | usdx-1ba91d5a0e1df7419a561f6dcf16a0839509a5e7.tar.gz usdx-1ba91d5a0e1df7419a561f6dcf16a0839509a5e7.tar.xz usdx-1ba91d5a0e1df7419a561f6dcf16a0839509a5e7.zip |
Reordering of the directories[1]: moving Game/Code to src
git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/trunk@1302 b956fd51-792f-4845-bead-9b4dfca2ff2c
Diffstat (limited to 'Game/Code/Classes/UDataBase.pas')
-rw-r--r-- | Game/Code/Classes/UDataBase.pas | 533 |
1 files changed, 0 insertions, 533 deletions
diff --git a/Game/Code/Classes/UDataBase.pas b/Game/Code/Classes/UDataBase.pas deleted file mode 100644 index cd315df3..00000000 --- a/Game/Code/Classes/UDataBase.pas +++ /dev/null @@ -1,533 +0,0 @@ -unit UDataBase; - -interface - -{$IFDEF FPC} - {$MODE Delphi} -{$ENDIF} - -{$I switches.inc} - -uses USongs, - USong, - Classes, - SQLiteTable3; - -//-------------------- -//DataBaseSystem - Class including all DB Methods -//-------------------- -type - TStatType = ( - stBestScores, // Best Scores - stBestSingers, // Best Singers - stMostSungSong, // Most sung Songs - stMostPopBand // Most popular Band - ); - - // abstract super-class for statistic results - TStatResult = class - public - Typ: TStatType; - end; - - TStatResultBestScores = class(TStatResult) - public - Singer: WideString; - Score: Word; - Difficulty: Byte; - SongArtist: WideString; - SongTitle: WideString; - end; - - TStatResultBestSingers = class(TStatResult) - public - Player: WideString; - AverageScore: Word; - end; - - TStatResultMostSungSong = class(TStatResult) - public - Artist: WideString; - Title: WideString; - TimesSung: Word; - end; - - TStatResultMostPopBand = class(TStatResult) - public - ArtistName: WideString; - TimesSungTot: Word; - end; - - - TDataBaseSystem = class - private - ScoreDB: TSQLiteDatabase; - fFilename: string; - - function GetVersion(): integer; - procedure SetVersion(Version: integer); - public - property Filename: string read fFilename; - - destructor Destroy; override; - - procedure Init(const Filename: string); - procedure ReadScore(Song: TSong); - procedure AddScore(Song: TSong; Level: integer; const Name: WideString; Score: integer); - procedure WriteScore(Song: TSong); - - function GetStats(Typ: TStatType; Count: Byte; Page: Cardinal; Reversed: Boolean): TList; - procedure FreeStats(StatList: TList); - function GetTotalEntrys(Typ: TStatType): Cardinal; - function GetStatReset: TDateTime; - end; - -var - DataBase: TDataBaseSystem; - -implementation - -uses - ULog, - DateUtils, - StrUtils, - SysUtils; - -const - cDBVersion = 01; // 0.1 - cUS_Scores = 'us_scores'; - cUS_Songs = 'us_songs'; - cUS_Statistics_Info = 'us_statistics_info'; - -(** - * Opens Database and Create Tables if not Exist - *) -procedure TDataBaseSystem.Init(const Filename: string); -var - Version: integer; -begin - if Assigned(ScoreDB) then - Exit; - - Log.LogStatus('Initializing database: "'+Filename+'"', 'TDataBaseSystem.Init'); - - try - - // Open Database - ScoreDB := TSQLiteDatabase.Create(Filename); - fFilename := Filename; - - // Close and delete outdated file - Version := GetVersion(); - if ((Version <> 0) and (Version <> cDBVersion)) then - begin - Log.LogInfo('Outdated cover-database file found', 'TDataBaseSystem.Init'); - // Close and delete outdated file - ScoreDB.Free; - if (not DeleteFile(Filename)) then - raise Exception.Create('Could not delete ' + Filename); - // Reopen - ScoreDB := TSQLiteDatabase.Create(Filename); - Version := 0; - end; - - // Set version number after creation - if (Version = 0) then - SetVersion(cDBVersion); - - - // SQLite does not handle VARCHAR(n) or INT(n) as expected. - // Texts do not have a restricted length, no matter which type is used, - // so use the native TEXT type. INT(n) is always INTEGER. - // In addition, SQLiteTable3 will fail if other types than the native SQLite - // types are used (especially FieldAsInteger). Also take care to write the - // types in upper-case letters although SQLite does not care about this - - // SQLiteTable3 is very sensitive in this regard. - - ScoreDB.ExecSQL('CREATE TABLE IF NOT EXISTS ['+cUS_Scores+'] (' + - '[SongID] INTEGER NOT NULL, ' + - '[Difficulty] INTEGER NOT NULL, ' + - '[Player] TEXT NOT NULL, ' + - '[Score] INTEGER NOT NULL' + - ');'); - - ScoreDB.ExecSQL('CREATE TABLE IF NOT EXISTS ['+cUS_Songs+'] (' + - '[ID] INTEGER PRIMARY KEY, ' + - '[Artist] TEXT NOT NULL, ' + - '[Title] TEXT NOT NULL, ' + - '[TimesPlayed] INTEGER NOT NULL' + - ');'); - - if not ScoreDB.TableExists(cUS_Statistics_Info) then - begin - ScoreDB.ExecSQL('CREATE TABLE IF NOT EXISTS ['+cUS_Statistics_Info+'] (' + - '[ResetTime] INTEGER' + - ');'); - // insert creation timestamp - ScoreDB.ExecSQL(Format('INSERT INTO ['+cUS_Statistics_Info+'] ' + - '([ResetTime]) VALUES(%d);', - [DateTimeToUnix(Now())])); - end; - - except - on E: Exception do - begin - Log.LogError(E.Message, 'TDataBaseSystem.Init'); - FreeAndNil(ScoreDB); - end; - end; - -end; - -(** - * Frees Database - *) -destructor TDataBaseSystem.Destroy; -begin - Log.LogInfo('TDataBaseSystem.Free', 'TDataBaseSystem.Destroy'); - ScoreDB.Free; - inherited; -end; - -(** - * Read Scores into SongArray - *) -procedure TDataBaseSystem.ReadScore(Song: TSong); -var - TableData: TSQLiteUniTable; - Difficulty: Integer; -begin - if not Assigned(ScoreDB) then - Exit; - - TableData := nil; - - try - // Search Song in DB - TableData := ScoreDB.GetUniTable( - 'SELECT [Difficulty], [Player], [Score] FROM ['+cUS_Scores+'] ' + - 'WHERE [SongID] = (' + - 'SELECT [ID] FROM ['+cUS_Songs+'] ' + - 'WHERE [Artist] = ? AND [Title] = ? ' + - 'LIMIT 1) ' + - 'ORDER BY [Score] DESC LIMIT 15', - [UTF8Encode(Song.Artist), UTF8Encode(Song.Title)]); - - // Empty Old Scores - SetLength(Song.Score[0], 0); - SetLength(Song.Score[1], 0); - SetLength(Song.Score[2], 0); - - // Go through all Entrys - while (not TableData.EOF) do - begin - // Add one Entry to Array - Difficulty := TableData.FieldAsInteger(TableData.FieldIndex['Difficulty']); - if ((Difficulty >= 0) and (Difficulty <= 2)) and - (Length(Song.Score[Difficulty]) < 5) then - begin - SetLength(Song.Score[Difficulty], Length(Song.Score[Difficulty]) + 1); - - Song.Score[Difficulty, High(Song.Score[Difficulty])].Name := - UTF8Decode(TableData.FieldByName['Player']); - Song.Score[Difficulty, High(Song.Score[Difficulty])].Score := - TableData.FieldAsInteger(TableData.FieldIndex['Score']); - end; - - TableData.Next; - end; // while - - except - for Difficulty := 0 to 2 do - begin - SetLength(Song.Score[Difficulty], 1); - Song.Score[Difficulty, 1].Name := 'Error Reading ScoreDB'; - end; - end; - - TableData.Free; -end; - -(** - * Adds one new score to DB - *) -procedure TDataBaseSystem.AddScore(Song: TSong; Level: integer; const Name: WideString; Score: integer); -var - ID: Integer; - TableData: TSQLiteTable; -begin - if not Assigned(ScoreDB) then - Exit; - - // Prevent 0 Scores from being added - if (Score <= 0) then - Exit; - - TableData := nil; - - try - - ID := ScoreDB.GetTableValue( - 'SELECT [ID] FROM ['+cUS_Songs+'] ' + - 'WHERE [Artist] = ? AND [Title] = ?', - [UTF8Encode(Song.Artist), UTF8Encode(Song.Title)]); - if (ID = 0) then - begin - // Create song if it does not exist - ScoreDB.ExecSQL( - 'INSERT INTO ['+cUS_Songs+'] ' + - '([ID], [Artist], [Title], [TimesPlayed]) VALUES ' + - '(NULL, ?, ?, 0);', - [UTF8Encode(Song.Artist), UTF8Encode(Song.Title)]); - // Get song-ID - ID := ScoreDB.GetLastInsertRowID(); - end; - // Create new entry - ScoreDB.ExecSQL( - 'INSERT INTO ['+cUS_Scores+'] ' + - '([SongID] ,[Difficulty], [Player], [Score]) VALUES ' + - '(?, ?, ?, ?);', - [ID, Level, UTF8Encode(Name), Score]); - - // Delete last position when there are more than 5 entrys. - // Fixes crash when there are > 5 ScoreEntrys - // Note: GetUniTable is not applicable here, as the results are used while - // table entries are deleted. - TableData := ScoreDB.GetTable( - 'SELECT [Player], [Score] FROM ['+cUS_Scores+'] ' + - 'WHERE [SongID] = ' + InttoStr(ID) + ' AND ' + - '[Difficulty] = ' + InttoStr(Level) +' ' + - 'ORDER BY [Score] DESC LIMIT -1 OFFSET 5'); - - while (not TableData.EOF) do - begin - // Note: Score is an int-value, so in contrast to Player, we do not bind - // this value. Otherwise we had to convert the string to an int to avoid - // an automatic cast of this field to the TEXT type (although it might even - // work that way). - ScoreDB.ExecSQL( - 'DELETE FROM ['+cUS_Scores+'] ' + - 'WHERE [SongID] = ' + InttoStr(ID) + ' AND ' + - '[Difficulty] = ' + InttoStr(Level) +' AND ' + - '[Player] = ? AND ' + - '[Score] = ' + TableData.FieldByName['Score'], - [TableData.FieldByName['Player']]); - - TableData.Next; - end; - - except on E: Exception do - Log.LogError(E.Message, 'TDataBaseSystem.AddScore'); - end; - - TableData.Free; -end; - -(** - * Not needed with new System. - * Used for increment played count - *) -procedure TDataBaseSystem.WriteScore(Song: TSong); -begin - if not Assigned(ScoreDB) then - Exit; - - try - // Increase TimesPlayed - ScoreDB.ExecSQL( - 'UPDATE ['+cUS_Songs+'] ' + - 'SET [TimesPlayed] = [TimesPlayed] + 1 ' + - 'WHERE [Title] = ? AND [Artist] = ?;', - [UTF8Encode(Song.Title), UTF8Encode(Song.Artist)]); - except on E: Exception do - Log.LogError(E.Message, 'TDataBaseSystem.WriteScore'); - end; -end; - -(** - * Writes some stats to array. - * Returns nil if the database is not ready or a list with zero or more statistic - * entries. - * Free the result-list with FreeStats() after usage to avoid memory leaks. - *) -function TDataBaseSystem.GetStats(Typ: TStatType; Count: Byte; Page: Cardinal; Reversed: Boolean): TList; -var - Query: String; - TableData: TSQLiteUniTable; - Stat: TStatResult; -begin - Result := nil; - - if not Assigned(ScoreDB) then - Exit; - - {Todo: Add Prevention that only players with more than 5 scores are selected at type 2} - - // Create query - case Typ of - stBestScores: begin - Query := 'SELECT [Player], [Difficulty], [Score], [Artist], [Title] FROM ['+cUS_Scores+'] ' + - 'INNER JOIN ['+cUS_Songs+'] ON ([SongID] = [ID]) ORDER BY [Score]'; - end; - stBestSingers: begin - Query := 'SELECT [Player], ROUND(AVG([Score])) FROM ['+cUS_Scores+'] ' + - 'GROUP BY [Player] ORDER BY AVG([Score])'; - end; - stMostSungSong: begin - Query := 'SELECT [Artist], [Title], [TimesPlayed] FROM ['+cUS_Songs+'] ' + - 'ORDER BY [TimesPlayed]'; - end; - stMostPopBand: begin - Query := 'SELECT [Artist], SUM([TimesPlayed]) FROM ['+cUS_Songs+'] ' + - 'GROUP BY [Artist] ORDER BY SUM([TimesPlayed])'; - end; - end; - - // Add order direction - Query := Query + IfThen(Reversed, ' ASC', ' DESC'); - - // Add limit - Query := Query + ' LIMIT ' + InttoStr(Count * Page) + ', ' + InttoStr(Count) + ';'; - - // Execute query - try - TableData := ScoreDB.GetUniTable(Query); - except - on E: Exception do - begin - Log.LogError(E.Message, 'TDataBaseSystem.GetStats'); - Exit; - end; - end; - - Result := TList.Create; - Stat := nil; - - // Copy result to stats array - while not TableData.EOF do - begin - case Typ of - stBestScores: begin - Stat := TStatResultBestScores.Create; - with TStatResultBestScores(Stat) do - begin - Singer := UTF8Decode(TableData.Fields[0]); - Difficulty := TableData.FieldAsInteger(1); - Score := TableData.FieldAsInteger(2); - SongArtist := UTF8Decode(TableData.Fields[3]); - SongTitle := UTF8Decode(TableData.Fields[4]); - end; - end; - stBestSingers: begin - Stat := TStatResultBestSingers.Create; - with TStatResultBestSingers(Stat) do - begin - Player := UTF8Decode(TableData.Fields[0]); - AverageScore := TableData.FieldAsInteger(1); - end; - end; - stMostSungSong: begin - Stat := TStatResultMostSungSong.Create; - with TStatResultMostSungSong(Stat) do - begin - Artist := UTF8Decode(TableData.Fields[0]); - Title := UTF8Decode(TableData.Fields[1]); - TimesSung := TableData.FieldAsInteger(2); - end; - end; - stMostPopBand: begin - Stat := TStatResultMostPopBand.Create; - with TStatResultMostPopBand(Stat) do - begin - ArtistName := UTF8Decode(TableData.Fields[0]); - TimesSungTot := TableData.FieldAsInteger(1); - end; - end - else - Log.LogCritical('Unknown stat-type', 'TDataBaseSystem.GetStats'); - end; - - Stat.Typ := Typ; - Result.Add(Stat); - - TableData.Next; - end; - - TableData.Free; -end; - -procedure TDataBaseSystem.FreeStats(StatList: TList); -var - I: integer; -begin - if (StatList = nil) then - Exit; - for I := 0 to StatList.Count-1 do - TStatResult(StatList[I]).Free; - StatList.Free; -end; - -(** - * Gets total number of entrys for a stats query - *) -function TDataBaseSystem.GetTotalEntrys(Typ: TStatType): Cardinal; -var - Query: String; -begin - Result := 0; - - if not Assigned(ScoreDB) then - Exit; - - try - // Create query - case Typ of - stBestScores: - Query := 'SELECT COUNT([SongID]) FROM ['+cUS_Scores+'];'; - stBestSingers: - Query := 'SELECT COUNT(DISTINCT [Player]) FROM ['+cUS_Scores+'];'; - stMostSungSong: - Query := 'SELECT COUNT([ID]) FROM ['+cUS_Songs+'];'; - stMostPopBand: - Query := 'SELECT COUNT(DISTINCT [Artist]) FROM ['+cUS_Songs+'];'; - end; - - Result := ScoreDB.GetTableValue(Query); - except on E: Exception do - Log.LogError(E.Message, 'TDataBaseSystem.GetTotalEntrys'); - end; - -end; - -(** - * Gets reset date of statistic data - *) -function TDataBaseSystem.GetStatReset: TDateTime; -var - Query: string; - ResetTime: int64; -begin - Result := 0; - - if not Assigned(ScoreDB) then - Exit; - - try - Query := 'SELECT [ResetTime] FROM ['+cUS_Statistics_Info+'];'; - Result := UnixToDateTime(ScoreDB.GetTableValue(Query)); - except on E: Exception do - Log.LogError(E.Message, 'TDataBaseSystem.GetStatReset'); - end; -end; - -function TDataBaseSystem.GetVersion(): integer; -begin - Result := ScoreDB.GetTableValue('PRAGMA user_version'); -end; - -procedure TDataBaseSystem.SetVersion(Version: integer); -begin - ScoreDB.ExecSQL(Format('PRAGMA user_version = %d', [Version])); -end; - -end. |