trunk/design/IBTransactionEdit.pas

{************************************************************************}
{                                                                        }
{       Borland Delphi Visual Component Library                          }
{       InterBase Express core components                                }
{                                                                        }
{       Copyright (c) 1998-2000 Inprise Corporation                      }
{                                                                        }
{    InterBase Express is based in part on the product                   }
{    Free IB Components, written by Gregory H. Deatz for                 }
{    Hoagland, Longo, Moran, Dunst & Doukas Company.                     }
{    Free IB Components is used under license.                           }
{                                                                        }
{    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 InterBase Software Corporation     }
{       and its successors.                                              }
{    Portions created by Inprise Corporation are Copyright (C) Inprise   }
{       Corporation. All Rights Reserved.                                }
{    Contributor(s): Jeff Overcash                                       }
{                                                                        }
{************************************************************************}

unit IBTransactionEdit;

interface

uses
  Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, IBDatabase, IB, ExtCtrls, IBXConst;

type
  TIBTransactionEditForm = class(TForm)
    GroupBox1: TGroupBox;
    HelpBtn: TButton;
    Cancelbtn: TButton;
    OKBtn: TButton;
    rbSnapShot: TRadioButton;
    rbReadCommitted: TRadioButton;
    rbReadOnlyTableStability: TRadioButton;
    rbReadWriteTableStability: TRadioButton;
    TransactionParams: TMemo;
    Panel1: TPanel;
    Label1: TLabel;
    procedure OKBtnClick(Sender: TObject);
    procedure rbSnapShotClick(Sender: TObject);
    procedure rbReadCommittedClick(Sender: TObject);
    procedure rbReadOnlyTableStabilityClick(Sender: TObject);
    procedure rbReadWriteTableStabilityClick(Sender: TObject);
    procedure FormCreate(Sender: TObject);
    procedure HelpBtnClick(Sender: TObject);
    procedure TransactionParamsClick(Sender: TObject);
    procedure TransactionParamsExit(Sender: TObject);

  private
    { Private declarations }
    Transaction: TIBTransaction;
    function Edit: Boolean;
    procedure ParseParams;
    procedure ClearParamSelection;

  public
    { Public declarations }
  end;

var
  IBTransactionEditForm: TIBTransactionEditForm;

  function EditIBtransaction(Atransaction: TIBtransaction): Boolean;

implementation

{$R *.DFM}

uses
  LibHelp;

function EditIBtransaction(ATransaction: TIBtransaction): Boolean;
begin
  with TIBtransactionEditForm.Create(Application) do
  try
    Transaction := ATransaction;
    Result := Edit;
  finally
    Free;
  end;
end;

function TIBtransactionEditForm.Edit: Boolean;
begin
  TransactionParams.Lines := Transaction.Params;
  ParseParams;
  Result := False;
  if ShowModal = mrOk then
  begin
    Transaction.Params := TransactionParams.Lines;
    Result := True;
  end;
end;

type
  TTransactionParam = (concurrency, read_committed, rec_version, nowait,
    consistency, read, write);
  TTransactionParams = set of TTransactionParam;

procedure TIBTransactionEditForm.ParseParams;
var
  I: Integer;
  st: string;
  Value: TTransactionParams;

begin
  Value := [];
  for I := 0 to TransactionParams.Lines.Count - 1 do
  begin
    st := LowerCase(Trim(TransactionParams.Lines[I]));
    if st = '' then
      continue;
    if st = 'concurrency' then
      Include(Value, concurrency)
    else if st = 'read_committed' then
      Include(Value, read_committed)
    else if st = 'rec_version' then
      Include(Value, rec_version)
    else if st = 'nowait' then
      Include(Value, nowait)
    else if st = 'read' then
      Include(Value, read)
    else if st = 'write' then
      Include(Value, write)
    else if st = 'consistency' then
      Include(Value, consistency)
    else begin
      Value := [];
      break;
    end;
  end;
  ClearParamSelection;
  if Value = [concurrency, nowait] then
    rbSnapShot.Checked := True
  else if Value = [read_committed, rec_version, nowait] then
    rbReadCommitted.Checked := True
  else if Value = [read, consistency] then
    rbReadOnlyTableStability.Checked := True
  else if Value = [write, consistency] then
    rbReadWriteTableStability.Checked := True;
end;

procedure TIBTransactionEditForm.ClearParamSelection;
begin
  rbSnapShot.Checked := False;
  rbReadCommitted.Checked := False;
  rbReadOnlyTableStability.Checked := False;
  rbReadWriteTableStability.Checked := False;
end;

procedure TIBTransactionEditForm.OKBtnClick(Sender: TObject);
begin
  ModalResult := mrNone;
  if Transaction.Active then
  begin
    if MessageDlg(SCommitTransaction, mtConfirmation,
      mbOkCancel, 0) <> mrOk then Exit;
    Transaction.Rollback;
  end;
  ModalResult := mrOk;
end;

procedure TIBTransactionEditForm.FormCreate(Sender: TObject);
begin
  HelpContext := hcDIBTransactionEdit;
end;

procedure TIBTransactionEditForm.HelpBtnClick(Sender: TObject);
begin
  Application.HelpContext(HelpContext);
end;

procedure TIBTransactionEditForm.rbSnapShotClick(Sender: TObject);
begin
  TransactionParams.clear;
  TransactionParams.Lines.Add('concurrency'); { do not localize }
  TransactionParams.Lines.Add('nowait'); { do not localize }
end;

procedure TIBTransactionEditForm.rbReadCommittedClick(Sender: TObject);
begin
  TransactionParams.clear;
  TransactionParams.Lines.Add('read_committed'); { do not localize }
  TransactionParams.Lines.Add('rec_version'); { do not localize }
  TransactionParams.Lines.Add('nowait'); { do not localize }
end;

procedure TIBTransactionEditForm.rbReadOnlyTableStabilityClick(Sender: TObject);
begin
  TransactionParams.clear;
  TransactionParams.Lines.Add('read'); { do not localize }
  TransactionParams.Lines.Add('consistency'); { do not localize }
end;

procedure TIBTransactionEditForm.rbReadWriteTableStabilityClick(Sender: TObject);
begin
  TransactionParams.clear;
  TransactionParams.Lines.Add('write'); { do not localize }
  TransactionParams.Lines.Add('consistency'); { do not localize }
end;

procedure TIBTransactionEditForm.TransactionParamsClick(Sender: TObject);
begin
  ClearParamSelection;
end;

procedure TIBTransactionEditForm.TransactionParamsExit(Sender: TObject);
begin
  ParseParams;
end;

end.
Revision:	1
Committed:	Mon Jul 31 16:43:00 2000 UTC (23 years, 9 months ago) by tony
Content type:	text/x-pascal
File size:	7189 byte(s)
Log Message:	Borland IBX Open Source Release
#	User	Rev	Content
1	tony	1	{************************************************************************}
2			{ }
3			{ Borland Delphi Visual Component Library }
4			{ InterBase Express core components }
5			{ }
6			{ Copyright (c) 1998-2000 Inprise Corporation }
7			{ }
8			{ InterBase Express is based in part on the product }
9			{ Free IB Components, written by Gregory H. Deatz for }
10			{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
11			{ Free IB Components is used under license. }
12			{ }
13			{ The contents of this file are subject to the InterBase }
14			{ Public License Version 1.0 (the "License"); you may not }
15			{ use this file except in compliance with the License. You }
16			{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
17			{ Software distributed under the License is distributed on }
18			{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
19			{ express or implied. See the License for the specific language }
20			{ governing rights and limitations under the License. }
21			{ The Original Code was created by InterBase Software Corporation }
22			{ and its successors. }
23			{ Portions created by Inprise Corporation are Copyright (C) Inprise }
24			{ Corporation. All Rights Reserved. }
25			{ Contributor(s): Jeff Overcash }
26			{ }
27			{************************************************************************}
28
29			unit IBTransactionEdit;
30
31			interface
32
33			uses
34			Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
35			StdCtrls, IBDatabase, IB, ExtCtrls, IBXConst;
36
37			type
38			TIBTransactionEditForm = class(TForm)
39			GroupBox1: TGroupBox;
40			HelpBtn: TButton;
41			Cancelbtn: TButton;
42			OKBtn: TButton;
43			rbSnapShot: TRadioButton;
44			rbReadCommitted: TRadioButton;
45			rbReadOnlyTableStability: TRadioButton;
46			rbReadWriteTableStability: TRadioButton;
47			TransactionParams: TMemo;
48			Panel1: TPanel;
49			Label1: TLabel;
50			procedure OKBtnClick(Sender: TObject);
51			procedure rbSnapShotClick(Sender: TObject);
52			procedure rbReadCommittedClick(Sender: TObject);
53			procedure rbReadOnlyTableStabilityClick(Sender: TObject);
54			procedure rbReadWriteTableStabilityClick(Sender: TObject);
55			procedure FormCreate(Sender: TObject);
56			procedure HelpBtnClick(Sender: TObject);
57			procedure TransactionParamsClick(Sender: TObject);
58			procedure TransactionParamsExit(Sender: TObject);
59
60			private
61			{ Private declarations }
62			Transaction: TIBTransaction;
63			function Edit: Boolean;
64			procedure ParseParams;
65			procedure ClearParamSelection;
66
67			public
68			{ Public declarations }
69			end;
70
71			var
72			IBTransactionEditForm: TIBTransactionEditForm;
73
74			function EditIBtransaction(Atransaction: TIBtransaction): Boolean;
75
76			implementation
77
78			{$R *.DFM}
79
80			uses
81			LibHelp;
82
83			function EditIBtransaction(ATransaction: TIBtransaction): Boolean;
84			begin
85			with TIBtransactionEditForm.Create(Application) do
86			try
87			Transaction := ATransaction;
88			Result := Edit;
89			finally
90			Free;
91			end;
92			end;
93
94			function TIBtransactionEditForm.Edit: Boolean;
95			begin
96			TransactionParams.Lines := Transaction.Params;
97			ParseParams;
98			Result := False;
99			if ShowModal = mrOk then
100			begin
101			Transaction.Params := TransactionParams.Lines;
102			Result := True;
103			end;
104			end;
105
106			type
107			TTransactionParam = (concurrency, read_committed, rec_version, nowait,
108			consistency, read, write);
109			TTransactionParams = set of TTransactionParam;
110
111			procedure TIBTransactionEditForm.ParseParams;
112			var
113			I: Integer;
114			st: string;
115			Value: TTransactionParams;
116
117			begin
118			Value := [];
119			for I := 0 to TransactionParams.Lines.Count - 1 do
120			begin
121			st := LowerCase(Trim(TransactionParams.Lines[I]));
122			if st = '' then
123			continue;
124			if st = 'concurrency' then
125			Include(Value, concurrency)
126			else if st = 'read_committed' then
127			Include(Value, read_committed)
128			else if st = 'rec_version' then
129			Include(Value, rec_version)
130			else if st = 'nowait' then
131			Include(Value, nowait)
132			else if st = 'read' then
133			Include(Value, read)
134			else if st = 'write' then
135			Include(Value, write)
136			else if st = 'consistency' then
137			Include(Value, consistency)
138			else begin
139			Value := [];
140			break;
141			end;
142			end;
143			ClearParamSelection;
144			if Value = [concurrency, nowait] then
145			rbSnapShot.Checked := True
146			else if Value = [read_committed, rec_version, nowait] then
147			rbReadCommitted.Checked := True
148			else if Value = [read, consistency] then
149			rbReadOnlyTableStability.Checked := True
150			else if Value = [write, consistency] then
151			rbReadWriteTableStability.Checked := True;
152			end;
153
154			procedure TIBTransactionEditForm.ClearParamSelection;
155			begin
156			rbSnapShot.Checked := False;
157			rbReadCommitted.Checked := False;
158			rbReadOnlyTableStability.Checked := False;
159			rbReadWriteTableStability.Checked := False;
160			end;
161
162			procedure TIBTransactionEditForm.OKBtnClick(Sender: TObject);
163			begin
164			ModalResult := mrNone;
165			if Transaction.Active then
166			begin
167			if MessageDlg(SCommitTransaction, mtConfirmation,
168			mbOkCancel, 0) <> mrOk then Exit;
169			Transaction.Rollback;
170			end;
171			ModalResult := mrOk;
172			end;
173
174			procedure TIBTransactionEditForm.FormCreate(Sender: TObject);
175			begin
176			HelpContext := hcDIBTransactionEdit;
177			end;
178
179			procedure TIBTransactionEditForm.HelpBtnClick(Sender: TObject);
180			begin
181			Application.HelpContext(HelpContext);
182			end;
183
184			procedure TIBTransactionEditForm.rbSnapShotClick(Sender: TObject);
185			begin
186			TransactionParams.clear;
187			TransactionParams.Lines.Add('concurrency'); { do not localize }
188			TransactionParams.Lines.Add('nowait'); { do not localize }
189			end;
190
191			procedure TIBTransactionEditForm.rbReadCommittedClick(Sender: TObject);
192			begin
193			TransactionParams.clear;
194			TransactionParams.Lines.Add('read_committed'); { do not localize }
195			TransactionParams.Lines.Add('rec_version'); { do not localize }
196			TransactionParams.Lines.Add('nowait'); { do not localize }
197			end;
198
199			procedure TIBTransactionEditForm.rbReadOnlyTableStabilityClick(Sender: TObject);
200			begin
201			TransactionParams.clear;
202			TransactionParams.Lines.Add('read'); { do not localize }
203			TransactionParams.Lines.Add('consistency'); { do not localize }
204			end;
205
206			procedure TIBTransactionEditForm.rbReadWriteTableStabilityClick(Sender: TObject);
207			begin
208			TransactionParams.clear;
209			TransactionParams.Lines.Add('write'); { do not localize }
210			TransactionParams.Lines.Add('consistency'); { do not localize }
211			end;
212
213			procedure TIBTransactionEditForm.TransactionParamsClick(Sender: TObject);
214			begin
215			ClearParamSelection;
216			end;
217
218			procedure TIBTransactionEditForm.TransactionParamsExit(Sender: TObject);
219			begin
220			ParseParams;
221			end;
222
223			end.