55 lines
2.1 KiB
ObjectPascal
55 lines
2.1 KiB
ObjectPascal
{
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Synopse mORMot framework
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Sample 02 - Embedded SQLite3 ORM
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purpose of this sample is to show embedded SQLite3 database usage:
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- a TSampleRecord class is defined in Unit1.pas
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- a SQLite3 server is initialized (see TSQLRestServerDB.Create below) and
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will work embedded, i.e. not in Client/Server mode here
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- the CreateMissingTables method will create all necessary tables in the
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SQLite3 database
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- the purpose of the form in Unit1.pas is to add a record to the
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database; the Time field is filled with the current date and time
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- the 'Find a previous message' button show how to perform a basic query
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- since the framework use UTF-8 encoding, we use some basic functions for
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fast conversion to/from the User Interface; in real applications,
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you should better use our SQLite3i18n unit and the corresponding
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TLanguageFile.StringToUTF8() and TLanguageFile.UTF8ToString() methods
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- note that you didn't need to write any SQL statement, only define a
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class and call some methods; even the query was made very easy (just an
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obvious WHERE clause to write)
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- thanks to the true object oriented modeling of the framework, the same
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exact Unit1 is used for both static in-memory database engine, or
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with SQLite3 database storage: only the TForm1.Database object creation
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instance was modified
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- look at the tiny size of the EXE (even with SQLite3 engine embedded), less
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than 400KB with LVCL :)
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Version 1.0 - January 24, 2010
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}
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program Project02;
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uses
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{$I SynDprUses.inc} // use FastMM4 on older Delphi, or set FPC threads
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Forms,
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SysUtils,
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SynCommons,
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mORMot,
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mORMotSQLite3, SynSQLite3Static,
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Unit1 in '..\01 - In Memory ORM\Unit1.pas' {Form1},
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SampleData in '..\01 - In Memory ORM\SampleData.pas';
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{$R *.res}
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begin
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Application.Initialize;
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Application.CreateForm(TForm1, Form1);
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Form1.Caption := ' Sample 02 - Embedded SQLite3 ORM';
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Form1.Database := TSQLRestServerDB.Create(Form1.Model,
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ChangeFileExt(ExeVersion.ProgramFileName,'.db3'));
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TSQLRestServerDB(Form1.Database).CreateMissingTables;
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Application.Run;
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end.
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