mirror of
https://github.com/danieleteti/delphimvcframework.git
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134 lines
4.0 KiB
ObjectPascal
134 lines
4.0 KiB
ObjectPascal
unit PeopleModuleU;
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interface
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uses
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System.SysUtils, System.Classes, FireDAC.Stan.Intf, FireDAC.Stan.Option, FireDAC.Stan.Param,
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FireDAC.Stan.Error,
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FireDAC.DatS, FireDAC.Phys.Intf, FireDAC.DApt.Intf, FireDAC.Stan.Async, FireDAC.DApt, Data.DB,
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FireDAC.Comp.DataSet,
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FireDAC.Comp.Client, PersonBO, System.Generics.Collections, FireDAC.UI.Intf, FireDAC.Stan.Def,
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FireDAC.Stan.Pool, FireDAC.Phys, FireDAC.Phys.IBBase, FireDAC.Phys.IB, FireDAC.Phys.FB,
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FireDAC.Phys.FBDef, FireDAC.VCLUI.Wait, FireDAC.Phys.SQLite,
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FireDAC.Phys.SQLiteDef, FireDAC.Stan.ExprFuncs;
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type
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TPeopleModule = class(TDataModule)
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qryPeople: TFDQuery;
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updPeople: TFDUpdateSQL;
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Conn: TFDConnection;
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FDPhysSQLiteDriverLink1: TFDPhysSQLiteDriverLink;
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procedure ConnBeforeConnect(Sender: TObject);
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procedure ConnAfterConnect(Sender: TObject);
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public
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procedure CreatePerson(APerson: TPerson);
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procedure DeletePerson(AID: Integer);
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procedure UpdatePerson(APerson: TPerson);
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function GetPersonByID(AID: Integer): TPerson;
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function GetPhotoByID(AID: Integer): TStream;
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function FindPeople(ASearchText: string; APage: Integer): TObjectList<TPerson>;
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function GetPeople(APage: Integer): TObjectList<TPerson>;
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end;
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implementation
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uses
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System.Math, CommonsU, System.IOUtils, MVCFramework.DataSet.Utils, MVCFramework.FireDAC.Utils;
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{ %CLASSGROUP 'Vcl.Controls.TControl' }
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{$R *.dfm}
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{ TPeopleModule }
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procedure TPeopleModule.ConnAfterConnect(Sender: TObject);
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begin
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// Conn.ExecSQL('DROP TABLE PEOPLE');
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Conn.ExecSQL
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('CREATE TABLE IF NOT EXISTS PEOPLE (ID INTEGER PRIMARY KEY AUTOINCREMENT, FIRST_NAME, LAST_NAME, WORK_PHONE_NUMBER, MOBILE_PHONE_NUMBER, EMAIL) ');
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end;
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procedure TPeopleModule.ConnBeforeConnect(Sender: TObject);
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begin
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inherited;
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Conn.Params.Values['Database'] := ChangeFileExt(GetModuleName(HInstance), 'db');
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end;
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procedure TPeopleModule.CreatePerson(APerson: TPerson);
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var
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InsCommand: TFDCustomCommand;
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begin
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InsCommand := updPeople.Commands[arInsert];
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TFireDACUtils.ObjectToParameters(InsCommand.Params, APerson, 'NEW_');
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InsCommand.Execute;
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APerson.ID := Conn.GetLastAutoGenValue('');
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end;
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procedure TPeopleModule.DeletePerson(AID: Integer);
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var
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DelCommand: TFDCustomCommand;
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begin
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DelCommand := updPeople.Commands[arDelete];
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DelCommand.ParamByName('OLD_ID').AsInteger := AID;
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DelCommand.Execute;
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end;
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function TPeopleModule.FindPeople(ASearchText: string; APage: Integer): TObjectList<TPerson>;
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var
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StartRec, EndRec: Integer;
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lMacro: TFDMacro;
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begin
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Sleep(2000); // just to mimic a slow database query
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GetLimitByPage(APage, StartRec, EndRec);
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qryPeople.Macros.Clear;
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lMacro := qryPeople.Macros.Add;
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lMacro.AsString := '%' + ASearchText + '%';
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lMacro.Name := 'searchtext';
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qryPeople.Open('SELECT * FROM PEOPLE WHERE ' +
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'FIRST_NAME LIKE &searchtext ' +
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'OR LAST_NAME LIKE &searchtext ' +
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'OR EMAIL LIKE &searchtext ' +
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'ORDER BY LAST_NAME, FIRST_NAME ' +
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Format('LIMIT %d,%d', [StartRec, EndRec]),
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[]);
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Result := qryPeople.AsObjectList<TPerson>;
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end;
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function TPeopleModule.GetPersonByID(AID: Integer): TPerson;
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begin
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qryPeople.Open('SELECT * FROM PEOPLE WHERE ID = :ID', [AID]);
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Result := qryPeople.AsObject<TPerson>;
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end;
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function TPeopleModule.GetPhotoByID(AID: Integer): TStream;
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begin
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Result := TFileStream.Create(Format('photos\photo_%4.4d.png', [AID]),
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fmOpenRead or fmShareDenyWrite);
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end;
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function TPeopleModule.GetPeople(APage: Integer): TObjectList<TPerson>;
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var
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StartRec, EndRec: Integer;
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begin
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GetLimitByPage(APage, StartRec, EndRec);
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qryPeople.Open('SELECT * FROM PEOPLE ORDER BY LAST_NAME, FIRST_NAME ' +
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Format('ROWS %d to %d', [StartRec, EndRec]));
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Result := qryPeople.AsObjectList<TPerson>;
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end;
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procedure TPeopleModule.UpdatePerson(APerson: TPerson);
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var
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UpdCommand: TFDCustomCommand;
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begin
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UpdCommand := updPeople.Commands[arUpdate];
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TFireDACUtils.ObjectToParameters(
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UpdCommand.Params,
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APerson, 'NEW_');
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UpdCommand.ParamByName('OLD_ID').AsInteger := APerson.ID;
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UpdCommand.Execute;
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end;
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end.
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