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;

{$MODE Delphi}

interface

uses
  {Windows,} Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, IBDataBase, IB, ExtCtrls, IBXConst, LResources;

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


{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;

initialization
  {$i IBTransactionEdit.lrs}

end.
Revision:	5
Committed:	Fri Feb 18 16:26:16 2011 UTC (13 years, 10 months ago) by tony
Content type:	text/x-pascal
File size:	7257 byte(s)
Log Message:	Committing updates for Release pre-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	{$MODE Delphi}
32
33	interface
34
35	uses
36	{Windows,} Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
37	StdCtrls, IBDataBase, IB, ExtCtrls, IBXConst, LResources;
38
39	type
40	TIBTransactionEditForm = class(TForm)
41	GroupBox1: TGroupBox;
42	HelpBtn: TButton;
43	Cancelbtn: TButton;
44	OKBtn: TButton;
45	rbSnapShot: TRadioButton;
46	rbReadCommitted: TRadioButton;
47	rbReadOnlyTableStability: TRadioButton;
48	rbReadWriteTableStability: TRadioButton;
49	TransactionParams: TMemo;
50	Panel1: TPanel;
51	Label1: TLabel;
52	procedure OKBtnClick(Sender: TObject);
53	procedure rbSnapShotClick(Sender: TObject);
54	procedure rbReadCommittedClick(Sender: TObject);
55	procedure rbReadOnlyTableStabilityClick(Sender: TObject);
56	procedure rbReadWriteTableStabilityClick(Sender: TObject);
57	procedure FormCreate(Sender: TObject);
58	procedure HelpBtnClick(Sender: TObject);
59	procedure TransactionParamsClick(Sender: TObject);
60	procedure TransactionParamsExit(Sender: TObject);
61
62	private
63	{ Private declarations }
64	Transaction: TIBTransaction;
65	function Edit: Boolean;
66	procedure ParseParams;
67	procedure ClearParamSelection;
68
69	public
70	{ Public declarations }
71	end;
72
73	var
74	IBTransactionEditForm: TIBTransactionEditForm;
75
76	function EditIBtransaction(Atransaction: TIBtransaction): Boolean;
77
78	implementation
79
80
81	{uses
82	LibHelp;}
83
84	function EditIBtransaction(ATransaction: TIBtransaction): Boolean;
85	begin
86	with TIBtransactionEditForm.Create(Application) do
87	try
88	Transaction := ATransaction;
89	Result := Edit;
90	finally
91	Free;
92	end;
93	end;
94
95	function TIBtransactionEditForm.Edit: Boolean;
96	begin
97	TransactionParams.Lines := Transaction.Params;
98	ParseParams;
99	Result := False;
100	if ShowModal = mrOk then
101	begin
102	Transaction.Params := TransactionParams.Lines;
103	Result := True;
104	end;
105	end;
106
107	type
108	TTransactionParam = (concurrency, read_committed, rec_version, nowait,
109	consistency, read, write);
110	TTransactionParams = set of TTransactionParam;
111
112	procedure TIBTransactionEditForm.ParseParams;
113	var
114	I: Integer;
115	st: string;
116	Value: TTransactionParams;
117
118	begin
119	Value := [];
120	for I := 0 to TransactionParams.Lines.Count - 1 do
121	begin
122	st := LowerCase(Trim(TransactionParams.Lines[I]));
123	if st = '' then
124	continue;
125	if st = 'concurrency' then
126	Include(Value, concurrency)
127	else if st = 'read_committed' then
128	Include(Value, read_committed)
129	else if st = 'rec_version' then
130	Include(Value, rec_version)
131	else if st = 'nowait' then
132	Include(Value, nowait)
133	else if st = 'read' then
134	Include(Value, read)
135	else if st = 'write' then
136	Include(Value, write)
137	else if st = 'consistency' then
138	Include(Value, consistency)
139	else begin
140	Value := [];
141	break;
142	end;
143	end;
144	ClearParamSelection;
145	if Value = [concurrency, nowait] then
146	rbSnapShot.Checked := True
147	else if Value = [read_committed, rec_version, nowait] then
148	rbReadCommitted.Checked := True
149	else if Value = [read, consistency] then
150	rbReadOnlyTableStability.Checked := True
151	else if Value = [write, consistency] then
152	rbReadWriteTableStability.Checked := True;
153	end;
154
155	procedure TIBTransactionEditForm.ClearParamSelection;
156	begin
157	rbSnapShot.Checked := False;
158	rbReadCommitted.Checked := False;
159	rbReadOnlyTableStability.Checked := False;
160	rbReadWriteTableStability.Checked := False;
161	end;
162
163	procedure TIBTransactionEditForm.OKBtnClick(Sender: TObject);
164	begin
165	ModalResult := mrNone;
166	if Transaction.Active then
167	begin
168	if MessageDlg(SCommitTransaction, mtConfirmation,
169	mbOkCancel, 0) <> mrOk then Exit;
170	Transaction.Rollback;
171	end;
172	ModalResult := mrOk;
173	end;
174
175	procedure TIBTransactionEditForm.FormCreate(Sender: TObject);
176	begin
177	// HelpContext := hcDIBTransactionEdit;
178	end;
179
180	procedure TIBTransactionEditForm.HelpBtnClick(Sender: TObject);
181	begin
182	Application.HelpContext(HelpContext);
183	end;
184
185	procedure TIBTransactionEditForm.rbSnapShotClick(Sender: TObject);
186	begin
187	TransactionParams.clear;
188	TransactionParams.Lines.Add('concurrency'); { do not localize }
189	TransactionParams.Lines.Add('nowait'); { do not localize }
190	end;
191
192	procedure TIBTransactionEditForm.rbReadCommittedClick(Sender: TObject);
193	begin
194	TransactionParams.clear;
195	TransactionParams.Lines.Add('read_committed'); { do not localize }
196	TransactionParams.Lines.Add('rec_version'); { do not localize }
197	TransactionParams.Lines.Add('nowait'); { do not localize }
198	end;
199
200	procedure TIBTransactionEditForm.rbReadOnlyTableStabilityClick(Sender: TObject);
201	begin
202	TransactionParams.clear;
203	TransactionParams.Lines.Add('read'); { do not localize }
204	TransactionParams.Lines.Add('consistency'); { do not localize }
205	end;
206
207	procedure TIBTransactionEditForm.rbReadWriteTableStabilityClick(Sender: TObject);
208	begin
209	TransactionParams.clear;
210	TransactionParams.Lines.Add('write'); { do not localize }
211	TransactionParams.Lines.Add('consistency'); { do not localize }
212	end;
213
214	procedure TIBTransactionEditForm.TransactionParamsClick(Sender: TObject);
215	begin
216	ClearParamSelection;
217	end;
218
219	procedure TIBTransactionEditForm.TransactionParamsExit(Sender: TObject);
220	begin
221	ParseParams;
222	end;
223
224	initialization
225	{$i IBTransactionEdit.lrs}
226
227	end.