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(* |
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* IBX For Lazarus (Firebird Express) |
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* |
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* The contents of this file are subject to the Initial Developer's |
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* Public License Version 1.0 (the "License"); you may not use this |
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* file except in compliance with the License. You may obtain a copy |
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* of the License here: |
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* |
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl |
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* |
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* Software distributed under the License is distributed on an "AS |
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or |
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* implied. See the License for the specific language governing rights |
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* and limitations under the License. |
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* |
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* The Initial Developer of the Original Code is Tony Whyman. |
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* |
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* The Original Code is (C) 2015 Tony Whyman, MWA Software |
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* (http://www.mwasoftware.co.uk). |
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* |
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* All Rights Reserved. |
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* |
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* Contributor(s): ______________________________________. |
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* |
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*) |
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|
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unit Unit1; |
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|
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{$mode objfpc}{$H+} |
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IBTransaction1: TIBTransaction; |
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procedure DBImage1DBImageRead(Sender: TObject; S: TStream; |
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var GraphExt: string); |
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procedure EmployeesAfterPost(DataSet: TDataSet); |
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procedure EmployeesValidatePost(Sender: TObject; var CancelPost: boolean); |
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procedure IBDatabase1AfterConnect(Sender: TObject); |
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procedure IBLocalDBSupport1GetDBVersionNo(Sender: TObject; |
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{ private declarations } |
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FDirty: boolean; |
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FNoAutoReopen: boolean; |
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procedure DoDBOpen(Data: PtrInt); |
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procedure Reopen(Data: PtrInt); |
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function GetDBVersionNo: integer; |
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public |
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end; |
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|
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var |
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< |
Form1: TForm1; |
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Form1: TForm1; |
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|
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implementation |
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|
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{$R *.lfm} |
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|
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uses IB, Unit2; |
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uses IB, Unit2, IBMessages; |
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|
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const |
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sNoName = '<no name>'; |
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|
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function ExtractDBException(msg: string): string; |
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var Lines: TStringList; |
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begin |
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Lines := TStringList.Create; |
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try |
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Lines.Text := msg; |
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if pos('exception',Lines[0]) = 1 then |
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Result := Lines[2] |
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else |
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Result := msg |
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finally |
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Lines.Free |
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end; |
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end; |
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|
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{ TForm1 } |
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|
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procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string; |
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(Sender as TAction).Enabled := FDirty |
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end; |
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|
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procedure TForm1.DoDBOpen(Data: PtrInt); |
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begin |
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try |
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IBDatabase1.Connected := true; |
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except On E:Exception do |
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begin |
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MessageDlg(E.Message,mtError,[mbOK],0); |
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Close; |
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Exit |
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end; |
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end; |
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|
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{If upgrade failed or downgrade not pending then exit} |
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with IBLocalDBSupport1 do |
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if (CurrentDBVersionNo < RequiredVersionNo) or |
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((CurrentDBVersionNo > RequiredVersionNo) and not DowngradePending) then |
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Close; |
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end; |
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|
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procedure TForm1.Reopen(Data: PtrInt); |
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begin |
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with IBTransaction1 do |
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if not InTransaction then StartTransaction; |
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Countries.Active := true; |
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Employees.Active := true; |
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Countries.Active := true; |
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JobCodes.Active := true; |
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Depts.Active := true; |
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end; |
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end; |
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end; |
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|
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procedure TForm1.EmployeesAfterPost(DataSet: TDataSet); |
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begin |
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Employees.Refresh |
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end; |
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|
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procedure TForm1.DBImage1DBImageRead(Sender: TObject; S: TStream; |
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var GraphExt: string); |
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begin |
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|
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procedure TForm1.FormShow(Sender: TObject); |
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begin |
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try |
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IBDatabase1.Connected := true; |
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except On E:Exception do |
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begin |
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MessageDlg(E.Message,mtError,[mbOK],0); |
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Close; |
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Exit |
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end; |
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end; |
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|
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{If upgrade failed or downgrade not pending then exit} |
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with IBLocalDBSupport1 do |
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if (CurrentDBVersionNo < RequiredVersionNo) or |
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((CurrentDBVersionNo > RequiredVersionNo) and not DowngradePending) then |
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Close; |
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{Set IB Exceptions to only show text message - omit SQLCode and Engine Code} |
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IBDatabase1.FirebirdAPI.GetStatus.SetIBDataBaseErrorMessages([ShowIBMessage]); |
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Application.ExceptionDialog := aedOkMessageBox; |
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Application.QueueAsyncCall(@DoDBOpen,0); |
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end; |
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|
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procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet); |
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begin |
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if E is EIBError then |
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begin |
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MessageDlg(ExtractDBException(EIBError(E).message),mtError,[mbOK],0); |
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MessageDlg(EIBError(E).message,mtError,[mbOK],0); |
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DataSet.Cancel; |
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DataAction := daAbort |
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end; |
