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

{$R *.lfm}

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:	7
Committed:	Sun Aug 5 18:28:19 2012 UTC (12 years, 4 months ago) by tony
Content type:	text/x-pascal
File size:	7205 byte(s)
Log Message:	Committing updates for Release R1-0-0
#	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	{$MODE Delphi}
32
33	interface
34
35	uses
36	{Windows,} Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
37	StdCtrls, IBDataBase, IB, ExtCtrls, IBXConst, LResources;
38
39	type
40	TIBTransactionEditForm = class(TForm)
41	GroupBox1: TGroupBox;
42	HelpBtn: TButton;
43	Cancelbtn: TButton;
44	OKBtn: TButton;
45	rbSnapShot: TRadioButton;
46	rbReadCommitted: TRadioButton;
47	rbReadOnlyTableStability: TRadioButton;
48	rbReadWriteTableStability: TRadioButton;
49	TransactionParams: TMemo;
50	Panel1: TPanel;
51	Label1: TLabel;
52	procedure OKBtnClick(Sender: TObject);
53	procedure rbSnapShotClick(Sender: TObject);
54	procedure rbReadCommittedClick(Sender: TObject);
55	procedure rbReadOnlyTableStabilityClick(Sender: TObject);
56	procedure rbReadWriteTableStabilityClick(Sender: TObject);
57	procedure FormCreate(Sender: TObject);
58	procedure HelpBtnClick(Sender: TObject);
59	procedure TransactionParamsClick(Sender: TObject);
60	procedure TransactionParamsExit(Sender: TObject);
61
62	private
63	{ Private declarations }
64	Transaction: TIBTransaction;
65	function Edit: Boolean;
66	procedure ParseParams;
67	procedure ClearParamSelection;
68
69	public
70	{ Public declarations }
71	end;
72
73	var
74	IBTransactionEditForm: TIBTransactionEditForm;
75
76	function EditIBtransaction(Atransaction: TIBtransaction): Boolean;
77
78	implementation
79
80	{$R *.lfm}
81
82	function EditIBtransaction(ATransaction: TIBtransaction): Boolean;
83	begin
84	with TIBtransactionEditForm.Create(Application) do
85	try
86	Transaction := ATransaction;
87	Result := Edit;
88	finally
89	Free;
90	end;
91	end;
92
93	function TIBtransactionEditForm.Edit: Boolean;
94	begin
95	TransactionParams.Lines := Transaction.Params;
96	ParseParams;
97	Result := False;
98	if ShowModal = mrOk then
99	begin
100	Transaction.Params := TransactionParams.Lines;
101	Result := True;
102	end;
103	end;
104
105	type
106	TTransactionParam = (concurrency, read_committed, rec_version, nowait,
107	consistency, read, write);
108	TTransactionParams = set of TTransactionParam;
109
110	procedure TIBTransactionEditForm.ParseParams;
111	var
112	I: Integer;
113	st: string;
114	Value: TTransactionParams;
115
116	begin
117	Value := [];
118	for I := 0 to TransactionParams.Lines.Count - 1 do
119	begin
120	st := LowerCase(Trim(TransactionParams.Lines[I]));
121	if st = '' then
122	continue;
123	if st = 'concurrency' then
124	Include(Value, concurrency)
125	else if st = 'read_committed' then
126	Include(Value, read_committed)
127	else if st = 'rec_version' then
128	Include(Value, rec_version)
129	else if st = 'nowait' then
130	Include(Value, nowait)
131	else if st = 'read' then
132	Include(Value, read)
133	else if st = 'write' then
134	Include(Value, write)
135	else if st = 'consistency' then
136	Include(Value, consistency)
137	else begin
138	Value := [];
139	break;
140	end;
141	end;
142	ClearParamSelection;
143	if Value = [concurrency, nowait] then
144	rbSnapShot.Checked := True
145	else if Value = [read_committed, rec_version, nowait] then
146	rbReadCommitted.Checked := True
147	else if Value = [read, consistency] then
148	rbReadOnlyTableStability.Checked := True
149	else if Value = [write, consistency] then
150	rbReadWriteTableStability.Checked := True;
151	end;
152
153	procedure TIBTransactionEditForm.ClearParamSelection;
154	begin
155	rbSnapShot.Checked := False;
156	rbReadCommitted.Checked := False;
157	rbReadOnlyTableStability.Checked := False;
158	rbReadWriteTableStability.Checked := False;
159	end;
160
161	procedure TIBTransactionEditForm.OKBtnClick(Sender: TObject);
162	begin
163	ModalResult := mrNone;
164	if Transaction.Active then
165	begin
166	if MessageDlg(SCommitTransaction, mtConfirmation,
167	mbOkCancel, 0) <> mrOk then Exit;
168	Transaction.Rollback;
169	end;
170	ModalResult := mrOk;
171	end;
172
173	procedure TIBTransactionEditForm.FormCreate(Sender: TObject);
174	begin
175	// HelpContext := hcDIBTransactionEdit;
176	end;
177
178	procedure TIBTransactionEditForm.HelpBtnClick(Sender: TObject);
179	begin
180	Application.HelpContext(HelpContext);
181	end;
182
183	procedure TIBTransactionEditForm.rbSnapShotClick(Sender: TObject);
184	begin
185	TransactionParams.clear;
186	TransactionParams.Lines.Add('concurrency'); { do not localize }
187	TransactionParams.Lines.Add('nowait'); { do not localize }
188	end;
189
190	procedure TIBTransactionEditForm.rbReadCommittedClick(Sender: TObject);
191	begin
192	TransactionParams.clear;
193	TransactionParams.Lines.Add('read_committed'); { do not localize }
194	TransactionParams.Lines.Add('rec_version'); { do not localize }
195	TransactionParams.Lines.Add('nowait'); { do not localize }
196	end;
197
198	procedure TIBTransactionEditForm.rbReadOnlyTableStabilityClick(Sender: TObject);
199	begin
200	TransactionParams.clear;
201	TransactionParams.Lines.Add('read'); { do not localize }
202	TransactionParams.Lines.Add('consistency'); { do not localize }
203	end;
204
205	procedure TIBTransactionEditForm.rbReadWriteTableStabilityClick(Sender: TObject);
206	begin
207	TransactionParams.clear;
208	TransactionParams.Lines.Add('write'); { do not localize }
209	TransactionParams.Lines.Add('consistency'); { do not localize }
210	end;
211
212	procedure TIBTransactionEditForm.TransactionParamsClick(Sender: TObject);
213	begin
214	ClearParamSelection;
215	end;
216
217	procedure TIBTransactionEditForm.TransactionParamsExit(Sender: TObject);
218	begin
219	ParseParams;
220	end;
221
222
223	end.