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 (24 years, 4 months ago) by tony
Content type:	text/x-pascal
File size:	7189 byte(s)
Log Message:	Borland IBX Open Source Release
#	Content
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.