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frmuDBValidation.pas
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Pascal/Delphi Source File
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2000-07-24
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544 lines
{
* The contents of this file are subject to the InterBase Public License
* Version 1.0 (the "License"); you may not use this file except in
* compliance with the License.
*
* You may obtain a copy of the License at http://www.Inprise.com/IPL.html.
*
* Software distributed under the License is distributed on an "AS IS"
* basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See
* the License for the specific language governing rights and limitations
* under the License. The Original Code was created by Inprise
* Corporation and its predecessors.
*
* Portions created by Inprise Corporation are Copyright (C) Inprise
* Corporation. All Rights Reserved.
*
* Contributor(s): ______________________________________.
}
{****************************************************************
*
* f r m u D B V a l i d a t i o n
*
****************************************************************
* Author: The Client Server Factory Inc.
* Date: March 1, 1999
*
* Description: This unit provides an interface for performing
* a database validation and repair
*
*****************************************************************
* Revisions:
*
*****************************************************************}
unit frmuDBValidation;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ExtCtrls, ComCtrls, zluibcClasses, zluContextHelp, IBServices, IB,
Grids, frmuDlgClass;
type
TfrmDBValidation = class(TDialog)
lblDatabaseName: TLabel;
bvlLine1: TBevel;
lblOptions: TLabel;
pnlOptionName: TPanel;
sgOptions: TStringGrid;
cbOptions: TComboBox;
btnOK: TButton;
btnCancel: TButton;
stxDatabaseName: TLabel;
function FormHelp(Command: Word; Data: Integer; var CallHelp: Boolean): Boolean;
procedure FormCreate(Sender: TObject);
procedure btnCancelClick(Sender: TObject);
procedure btnOKClick(Sender: TObject);
procedure cbOptionsDblClick(Sender: TObject);
procedure cbOptionsExit(Sender: TObject);
procedure cbOptionsKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
procedure sgOptionsDrawCell(Sender: TObject; ACol, ARow: Integer; Rect: TRect; State: TGridDrawState);
procedure sgOptionsSelectCell(Sender: TObject; ACol, ARow: Integer; var CanSelect: Boolean);
private
{ Private declarations }
function VerifyInputData(): boolean;
procedure WMNCLButtonDown( var Message: TWMNCLBUTTONDOWN ); message WM_NCLBUTTONDOWN ;
public
{ Public declarations }
end;
function DoDBValidation(const SourceServerNode: TibcServerNode; const CurrSelDatabase: TibcDatabaseNode): integer;
implementation
uses zluGlobal, zluUtility, frmuMessage, frmuDBValidationReport,
fileCtrl, frmuMain, IBErrorCodes;
{$R *.DFM}
const
OPTION_NAME_COL = 0;
OPTION_VALUE_COL = 1;
VALIDATE_RECORD_FRAGMENTS_ROW = 0;
READ_ONLY_VALIDATION_ROW = 1;
IGNORE_CHECKSUM_ERRORS_ROW = 2;
{****************************************************************
*
* D o D B V a l i d a t i o n ( )
*
****************************************************************
* Author: The Client Server Factory Inc.
* Date: March 1, 1999
*
* Input: TibcServerNode - currently selected server
* TibcDatabseNode - currently selected database (the
* database to be validated)
*
* Return: Integer - indicates success or failure
*
* Description: Ths function performs the validatation task.
*
*****************************************************************
* Revisions:
*
*****************************************************************}
function DoDBValidation(const SourceServerNode: TibcServerNode;
const CurrSelDatabase: TibcDatabaseNode): integer;
var
frmDBValidation : TfrmDBValidation;
lValidation : TIBValidationService;
lValidateOptions : TValidateOptions;
lValidationInfo : TStringList;
Validation_errors: boolean;
begin
lValidationInfo := TStringList.Create;
lValidation := TIBValidationService.Create(Nil);
lValidateOptions := [];
Result := SUCCESS;
try
try
// assign server details
lValidation.LoginPrompt := false;
lValidation.ServerName := SourceServerNode.Server.ServerName;
lValidation.Protocol := SourceServerNode.Server.Protocol;
lValidation.Params.Clear;
lValidation.Params.Assign(SourceServerNode.Server.Params);
lValidation.Attach(); // try to attach to server
except // if an exception occurs then trap it
on E:EIBError do // and display an error message
begin
DisplayMsg(ERR_SERVER_LOGIN, E.Message);
result := FAILURE;
if (E.IBErrorCode = isc_lost_db_connection) or
(E.IBErrorCode = isc_unavailable) or
(E.IBErrorCode = isc_network_error) then
frmMain.SetErrorState;
Exit;
end;
end;
// if successfully attached to server
if lValidation.Active = true then
begin
frmDBValidation := TfrmDBValidation.Create(Application);
try
frmDBValidation.stxDatabaseName.Caption := MinimizeName (CurrSelDatabase.NodeName,
frmDBValidation.stxDatabaseName.Canvas,
(frmDBValidation.stxDatabaseName.ClientRect.Left - frmDBValidation.stxDatabaseName.ClientRect.Right));
frmDBValidation.stxDatabaseName.Hint := CurrSelDatabase.NodeName;
frmDBValidation.ShowModal;
if (frmDBValidation.ModalResult = mrOK) and
(not frmDBValidation.GetErrorState) then
begin
Screen.Cursor := crHourGlass;
// assign database details
case SourceServerNode.Server.Protocol of
TCP : lValidation.DatabaseName := Format('%s:%s',[SourceServerNode.ServerName,CurrSelDatabase.DatabaseFiles.Strings[0]]);
NamedPipe : lValidation.DatabaseName := Format('\\%s\%s',[SourceServerNode.ServerName,CurrSelDatabase.DatabaseFiles.Strings[0]]);
SPX : lValidation.DatabaseName := Format('%s@%s',[SourceServerNode.ServerName,CurrSelDatabase.DatabaseFiles.Strings[0]]);
Local : lValidation.DatabaseName := CurrSelDatabase.DatabaseFiles.Strings[0];
end;
// determine which options have been selected
Include (lValidateOptions, ValidateDB);
if frmDBValidation.sgOptions.Cells[1,VALIDATE_RECORD_FRAGMENTS_ROW] = 'True' then
Include(lValidateOptions, ValidateFull);
if frmDBValidation.sgOptions.Cells[1,READ_ONLY_VALIDATION_ROW] = 'True' then
Include(lValidateOptions, CheckDB);
if (frmDBValidation.sgOptions.Cells[1,IGNORE_CHECKSUM_ERRORS_ROW] = 'True') then
Include(lValidateOptions, IgnoreChecksum);
// assign validation options
lValidation.Options := lValidateOptions;
// start service
try
lValidation.ServiceStart;
Application.ProcessMessages;
// get validation report
while not lValidation.Eof do
lValidationInfo.Add(Trim(lValidation.GetNextLine));
Validation_errors := true;
if lValidationInfo.Count = 1 then { there is an EOL marker }
Validation_errors := false;
while (lValidation.IsServiceRunning) and (not gApplShutdown) do
Application.ProcessMessages;
if lValidation.Active then
lValidation.Detach();
// show the validation report form
frmuDBValidationReport.ShowReport(lValidationInfo.Text, SourceServerNode,
CurrSelDatabase, Validation_errors);
except
on E: EIBError do
begin
DisplayMsg(E.IBErrorCode, E.Message);
if (E.IBErrorCode = isc_lost_db_connection) or
(E.IBErrorCode = isc_unavailable) or
(E.IBErrorCode = isc_network_error) then
frmMain.SetErrorState;
end;
end;
result := SUCCESS;
end
else
result := FAILURE;
finally
frmDBValidation.Free;
end;
end;
finally
Screen.Cursor := crDefault;
// detach from server and deallocate memory
if lValidation.Active then
lValidation.Detach();
lValidationInfo.Free;
lValidation.Free;
end;
end;
procedure TfrmDBValidation.btnCancelClick(Sender: TObject);
begin
ModalResult := mrCancel;
end;
function TfrmDBValidation.VerifyInputData(): boolean;
var
lValidateOptions: TValidateOptions;
begin
lValidateOptions := [ValidateDB];
// determine which options have been selected
if sgOptions.Cells[1,VALIDATE_RECORD_FRAGMENTS_ROW] = 'True' then
Include(lValidateOptions, ValidateFull);
if sgOptions.Cells[1,READ_ONLY_VALIDATION_ROW] = 'True' then
Include(lValidateOptions, CheckDB);
if sgOptions.Cells[1,IGNORE_CHECKSUM_ERRORS_ROW] = 'True' then
Include(lValidateOptions, IgnoreChecksum);
result := not (lValidateOptions = []);
end;
procedure TfrmDBValidation.btnOKClick(Sender: TObject);
begin
if VerifyInputData() then
ModalResult := mrOK
else
ShowMessage ('You must specify a validation option');
end;
{****************************************************************
*
* F r o m C r e a t e
*
****************************************************************
* Author: The Client Server Factory Inc.
* Date: March 1, 1999
*
* Input: TObject - Object that initiated the event
*
* Return: None
*
* Description: This procedure is responsible for populating
* the string grids when the form is created.
*
*****************************************************************
* Revisions:
*
*****************************************************************}
procedure TfrmDBValidation.FormCreate(Sender: TObject);
begin
inherited;
sgOptions.DefaultRowHeight := cbOptions.Height;
cbOptions.Visible := True;
pnlOptionName.Visible := True;
sgOptions.RowCount := 3;
sgOptions.Cells[OPTION_NAME_COL,VALIDATE_RECORD_FRAGMENTS_ROW] := 'Validate Record Fragments';
sgOptions.Cells[OPTION_VALUE_COL,VALIDATE_RECORD_FRAGMENTS_ROW] := 'False';
sgOptions.Cells[OPTION_NAME_COL,READ_ONLY_VALIDATION_ROW] := 'Read Only Validation';
sgOptions.Cells[OPTION_VALUE_COL,READ_ONLY_VALIDATION_ROW] := 'False';
sgOptions.Cells[OPTION_NAME_COL,IGNORE_CHECKSUM_ERRORS_ROW] := 'Ignore Checksum Errors';
sgOptions.Cells[OPTION_VALUE_COL,IGNORE_CHECKSUM_ERRORS_ROW] := 'False';
pnlOptionName.Caption := 'Validate Record Fragments';
cbOptions.Items.Add('True');
cbOptions.Items.Add('False');
cbOptions.ItemIndex := 1;
end;
procedure TfrmDBValidation.cbOptionsExit(Sender: TObject);
var
lR : TRect;
iIndex : Integer;
begin
iIndex := cbOptions.Items.IndexOf(cbOptions.Text);
if (iIndex = -1) then
begin
MessageDlg('Invalid option value', mtError, [mbOK], 0);
cbOptions.ItemIndex := 0;
// Size and position the combo box to fit the cell
lR := sgOptions.CellRect(OPTION_VALUE_COL, sgOptions.Row);
lR.Left := lR.Left + sgOptions.Left;
lR.Right := lR.Right + sgOptions.Left;
lR.Top := lR.Top + sgOptions.Top;
lR.Bottom := lR.Bottom + sgOptions.Top;
cbOptions.Left := lR.Left + 1;
cbOptions.Top := lR.Top + 1;
cbOptions.Width := (lR.Right + 1) - lR.Left;
cbOptions.Height := (lR.Bottom + 1) - lR.Top;
cbOptions.Visible := True;
cbOptions.SetFocus;
end
else if (sgOptions.Col <> OPTION_NAME_COL) then
begin
sgOptions.Cells[sgOptions.Col,sgOptions.Row] := cbOptions.Items[iIndex];
end
else
begin
sgOptions.Cells[OPTION_VALUE_COL,sgOptions.Row] := cbOptions.Items[iIndex];
end;
end;
{****************************************************************
*
* s g O p t i o n s D r a w C e l l
*
****************************************************************
* Author: The Client Server Factory Inc.
* Date: March 1, 1999
*
* Input: TObject - Object that initiated the event
* Integer - currently selected column
* Integer - currently selected row
* TRect - coordinates
* TGridDrawState - drawing state of grid
*
* Return: None
*
* Description: This procedure draws contents to a specified cell in
* the Options string grid.
*
*****************************************************************
* Revisions:
*
*****************************************************************}
procedure TfrmDBValidation.sgOptionsDrawCell(Sender: TObject; ACol,
ARow: Integer; Rect: TRect; State: TGridDrawState);
const
INDENT = 2;
var
lLeft: integer;
lText: string;
begin
with sgOptions.canvas do
begin
if (ACol = OPTION_VALUE_COL) then
begin
font.color := clBlue;
if brush.color = clHighlight then
font.color := clWhite;
lText := sgOptions.Cells[ACol,ARow];
lLeft := Rect.Left + INDENT;
TextRect(Rect, lLeft, Rect.top + INDENT, lText);
end;
end;
end;
{****************************************************************
*
* s g O p t i o n s S e l e c t C e l l
*
****************************************************************
* Author: The Client Server Factory Inc.
* Date: March 1, 1999
*
* Input: TObject - Object that initiated the event
* Integer - currently selected column
* Integer - currently selected row
* Boolean - indicates whether call can be selected
*
* Return: None
*
* Description: This procedure shows the combo box and populates
* it when the user selects a row in the value
* column of the options grid.
*
*****************************************************************
* Revisions:
*
*****************************************************************}
procedure TfrmDBValidation.sgOptionsSelectCell(Sender: TObject; ACol, ARow: Integer; var CanSelect: Boolean);
var
lR, lName : TRect;
begin
cbOptions.Items.Clear;
case ARow of
VALIDATE_RECORD_FRAGMENTS_ROW:
begin
cbOptions.Items.Add('True');
cbOptions.Items.Add('False');
end;
READ_ONLY_VALIDATION_ROW:
begin
cbOptions.Items.Add('True');
cbOptions.Items.Add('False');
end;
IGNORE_CHECKSUM_ERRORS_ROW:
begin
cbOptions.Items.Add('True');
cbOptions.Items.Add('False');
end;
end;
pnlOptionName.Caption := sgOptions.Cells[OPTION_NAME_COL, ARow];
if ACol = OPTION_NAME_COL then
cbOptions.ItemIndex := cbOptions.Items.IndexOf(sgOptions.Cells[ACol+1,ARow])
else if ACol = OPTION_VALUE_COL then
cbOptions.ItemIndex := cbOptions.Items.IndexOf(sgOptions.Cells[ACol,ARow]);
if ACol = OPTION_NAME_COL then
begin
lName := sgOptions.CellRect(ACol, ARow);
lR := sgOptions.CellRect(ACol + 1, ARow);
end
else
begin
lName := sgOptions.CellRect(ACol - 1, ARow);
lR := sgOptions.CellRect(ACol, ARow);
end;
// lName := sgOptions.CellRect(ACol, ARow);
lName.Left := lName.Left + sgOptions.Left;
lName.Right := lName.Right + sgOptions.Left;
lName.Top := lName.Top + sgOptions.Top;
lName.Bottom := lName.Bottom + sgOptions.Top;
pnlOptionName.Left := lName.Left + 1;
pnlOptionName.Top := lName.Top + 1;
pnlOptionName.Width := (lName.Right + 1) - lName.Left;
pnlOptionName.Height := (lName.Bottom + 1) - lName.Top;
pnlOptionName.Visible := True;
// lR := sgOptions.CellRect(ACol, ARow);
lR.Left := lR.Left + sgOptions.Left;
lR.Right := lR.Right + sgOptions.Left;
lR.Top := lR.Top + sgOptions.Top;
lR.Bottom := lR.Bottom + sgOptions.Top;
cbOptions.Left := lR.Left + 1;
cbOptions.Top := lR.Top + 1;
cbOptions.Width := (lR.Right + 1) - lR.Left;
cbOptions.Height := (lR.Bottom + 1) - lR.Top;
cbOptions.Visible := True;
cbOptions.SetFocus;
end;
{****************************************************************
*
* s g O p t i o n s D b l C l i c k
*
****************************************************************
* Author: The Client Server Factory Inc.
* Date: March 1, 1999
*
* Input: TObject - object that initiated the event
*
* Return: None
*
*
* Description: This procedure rotates through a list of values
* when the option name or value is double-clicked.
*
*****************************************************************
* Revisions:
*
*****************************************************************}
procedure TfrmDBValidation.cbOptionsDblClick(Sender: TObject);
begin
if (sgOptions.Col = OPTION_VALUE_COL) or (sgOptions.Col = OPTION_NAME_COL) then
begin
if cbOptions.ItemIndex = cbOptions.Items.Count - 1 then
cbOptions.ItemIndex := 0
else
cbOptions.ItemIndex := cbOptions.ItemIndex + 1;
if sgOptions.Col = OPTION_VALUE_COL then
sgOptions.Cells[sgOptions.Col,sgOptions.Row] := cbOptions.Items[cbOptions.ItemIndex];
end;
end;
procedure TfrmDBValidation.cbOptionsKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
if (Key = VK_DOWN) then
cbOptions.DroppedDown := true;
end;
function TfrmDBValidation.FormHelp(Command: Word; Data: Integer;
var CallHelp: Boolean): Boolean;
begin
CallHelp := False;
Result := WinHelp(WindowHandle,CONTEXT_HELP_FILE,HELP_CONTEXT,DATABASE_VALIDATION);
end;
procedure TfrmDBValidation.WMNCLButtonDown( var Message: TWMNCLButtonDown );
var
ScreenPt: TPoint;
ClientPt: TPoint;
begin
ScreenPt.X := Message.XCursor;
ScreenPt.Y := Message.YCursor;
ClientPt := ScreenToClient( ScreenPt );
if( ClientPt.X > Width-45 )and (ClientPt.X < Width-29) then
begin
WinHelp(WindowHandle,CONTEXT_HELP_FILE,HELP_CONTEXT,DATABASE_VALIDATION);
Message.Result := 0;
end else
inherited;
end;
end.