diff options
Diffstat (limited to 'src/lib/SQLite/example')
-rw-r--r-- | src/lib/SQLite/example/uTestSqlite.pas | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/src/lib/SQLite/example/uTestSqlite.pas b/src/lib/SQLite/example/uTestSqlite.pas deleted file mode 100644 index 484be71c..00000000 --- a/src/lib/SQLite/example/uTestSqlite.pas +++ /dev/null @@ -1,233 +0,0 @@ -unit uTestSqlite; - -interface - -uses - Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms, - Dialogs, StdCtrls,SQLiteTable3, ExtCtrls, jpeg; - -type - TForm1 = class(TForm) - btnTest: TButton; - memNotes: TMemo; - Label1: TLabel; - Label2: TLabel; - ebName: TEdit; - Label3: TLabel; - ebNumber: TEdit; - Label4: TLabel; - ebID: TEdit; - Image1: TImage; - btnLoadImage: TButton; - btnDisplayImage: TButton; - procedure btnTestClick(Sender: TObject); - procedure btnLoadImageClick(Sender: TObject); - procedure btnDisplayImageClick(Sender: TObject); - private - { Private declarations } - public - { Public declarations } - end; - -var - Form1: TForm1; - -implementation - -{$R *.dfm} - -procedure TForm1.btnTestClick(Sender: TObject); -var -slDBpath: string; -sldb: TSQLiteDatabase; -sltb: TSQLIteTable; -sSQL: String; -Notes: String; - -begin - -slDBPath := ExtractFilepath(application.exename) -+ 'test.db'; - -sldb := TSQLiteDatabase.Create(slDBPath); -try - -if sldb.TableExists('testTable') then begin -sSQL := 'DROP TABLE testtable'; -sldb.execsql(sSQL); -end; - -sSQL := 'CREATE TABLE testtable ([ID] INTEGER PRIMARY KEY,[OtherID] INTEGER NULL,'; -sSQL := sSQL + '[Name] VARCHAR (255),[Number] FLOAT, [notes] BLOB, [picture] BLOB COLLATE NOCASE);'; - -sldb.execsql(sSQL); - -sldb.execsql('CREATE INDEX TestTableName ON [testtable]([Name]);'); - -//begin a transaction -sldb.BeginTransaction; - -sSQL := 'INSERT INTO testtable(Name,OtherID,Number,Notes) VALUES ("Some Name",4,587.6594,"Here are some notes");'; -//do the insert -sldb.ExecSQL(sSQL); - -sSQL := 'INSERT INTO testtable(Name,OtherID,Number,Notes) VALUES ("Another Name",12,4758.3265,"More notes");'; -//do the insert -sldb.ExecSQL(sSQL); - -//end the transaction -sldb.Commit; - -//query the data -sltb := slDb.GetTable('SELECT * FROM testtable'); -try - -if sltb.Count > 0 then -begin -//display first row - -ebName.Text := sltb.FieldAsString(sltb.FieldIndex['Name']); -ebID.Text := inttostr(sltb.FieldAsInteger(sltb.FieldIndex['ID'])); -ebNumber.Text := floattostr( sltb.FieldAsDouble(sltb.FieldIndex['Number'])); -Notes := sltb.FieldAsBlobText(sltb.FieldIndex['Notes']); -memNotes.Text := notes; - -end; - -finally -sltb.Free; -end; - -finally -sldb.Free; - -end; - -end; - -procedure TForm1.btnLoadImageClick(Sender: TObject); -var -slDBpath: string; -sldb: TSQLiteDatabase; -sltb: TSQLIteTable; -iID: integer; -fs: TFileStream; - -begin - -slDBPath := ExtractFilepath(application.exename) -+ 'test.db'; - -if not FileExists(slDBPath) then begin -MessageDLg('Test.db does not exist. Click Test Sqlite 3 to create it.',mtInformation,[mbOK],0); -exit; -end; - -sldb := TSQLiteDatabase.Create(slDBPath); -try - -//get an ID -//query the data -sltb := slDb.GetTable('SELECT ID FROM testtable'); -try - -if sltb.Count = 0 then begin -MessageDLg('There are no rows in the database. Click Test Sqlite 3 to insert a row.',mtInformation,[mbOK],0); -exit; -end; - -iID := sltb.FieldAsInteger(sltb.FieldIndex['ID']); - -finally -sltb.Free; -end; - -//load an image -fs := TFileStream.Create(ExtractFileDir(application.ExeName) + '\sunset.jpg',fmOpenRead); -try - -//insert the image into the db -sldb.UpdateBlob('UPDATE testtable set picture = ? WHERE ID = ' + inttostr(iID),fs); - -finally -fs.Free; -end; - -finally -sldb.Free; - -end; - -end; - -procedure TForm1.btnDisplayImageClick(Sender: TObject); -var -slDBpath: string; -sldb: TSQLiteDatabase; -sltb: TSQLIteTable; -iID: integer; -ms: TMemoryStream; -pic: TJPegImage; - -begin - -slDBPath := ExtractFilepath(application.exename) -+ 'test.db'; - -if not FileExists(slDBPath) then begin -MessageDLg('Test.db does not exist. Click Test Sqlite 3 to create it, then Load image to load an image.',mtInformation,[mbOK],0); -exit; -end; - -sldb := TSQLiteDatabase.Create(slDBPath); -try - -//get an ID -//query the data -sltb := slDb.GetTable('SELECT ID FROM testtable'); -try - -if not sltb.Count = 0 then begin -MessageDLg('No rows in the test database. Click Test Sqlite 3 to insert a row, then Load image to load an image.',mtInformation,[mbOK],0); -exit; -end; - -iID := sltb.FieldAsInteger(sltb.FieldIndex['ID']); - -finally -sltb.Free; -end; - -sltb := sldb.GetTable('SELECT picture FROM testtable where ID = ' + inttostr(iID)); -try - -ms := sltb.FieldAsBlob(sltb.FieldIndex['picture']); -//note that the memory stream is freed when the TSqliteTable is destroyed. - -if (ms = nil) then begin -MessageDLg('No image in the test database. Click Load image to load an image.',mtInformation,[mbOK],0); -exit; -end; - -ms.Position := 0; - -pic := TJPEGImage.Create; -pic.LoadFromStream(ms); - -self.Image1.Picture.Graphic := pic; - -pic.Free; - -finally -sltb.Free; -end; - -finally -sldb.Free; - -end; - - -end; - -end. |