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,} SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
  StdCtrls, IBDataBase, IB, ExtCtrls, LResources;

type

  { TIBTransactionEditForm }

  TIBTransactionEditForm = class(TForm)
    GroupBox1: TGroupBox;
    Cancelbtn: TButton;
    OKBtn: TButton;
    rbOtherButton: TRadioButton;
    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 FBMessages;

{$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
  else
    rbOtherButton.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:	45
Committed:	Tue Dec 6 10:33:46 2016 UTC (7 years, 11 months ago) by tony
Content type:	text/x-pascal
File size:	7285 byte(s)
Log Message:	Committing updates for Release R2-0-0
#	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	{$MODE Delphi}
32
33	interface
34
35	uses
36	{Windows,} SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
37	StdCtrls, IBDataBase, IB, ExtCtrls, LResources;
38
39	type
40
41	{ TIBTransactionEditForm }
42
43	TIBTransactionEditForm = class(TForm)
44	GroupBox1: TGroupBox;
45	Cancelbtn: TButton;
46	OKBtn: TButton;
47	rbOtherButton: TRadioButton;
48	rbSnapShot: TRadioButton;
49	rbReadCommitted: TRadioButton;
50	rbReadOnlyTableStability: TRadioButton;
51	rbReadWriteTableStability: TRadioButton;
52	TransactionParams: TMemo;
53	Panel1: TPanel;
54	Label1: TLabel;
55	procedure OKBtnClick(Sender: TObject);
56	procedure rbSnapShotClick(Sender: TObject);
57	procedure rbReadCommittedClick(Sender: TObject);
58	procedure rbReadOnlyTableStabilityClick(Sender: TObject);
59	procedure rbReadWriteTableStabilityClick(Sender: TObject);
60	procedure FormCreate(Sender: TObject);
61	procedure HelpBtnClick(Sender: TObject);
62	procedure TransactionParamsClick(Sender: TObject);
63	procedure TransactionParamsExit(Sender: TObject);
64
65	private
66	{ Private declarations }
67	Transaction: TIBTransaction;
68	function Edit: Boolean;
69	procedure ParseParams;
70	procedure ClearParamSelection;
71
72	public
73	{ Public declarations }
74	end;
75
76	var
77	IBTransactionEditForm: TIBTransactionEditForm;
78
79	function EditIBtransaction(Atransaction: TIBtransaction): Boolean;
80
81	implementation
82
83	uses FBMessages;
84
85	{$R *.lfm}
86
87	function EditIBtransaction(ATransaction: TIBtransaction): Boolean;
88	begin
89	with TIBtransactionEditForm.Create(Application) do
90	try
91	Transaction := ATransaction;
92	Result := Edit;
93	finally
94	Free;
95	end;
96	end;
97
98	function TIBtransactionEditForm.Edit: Boolean;
99	begin
100	TransactionParams.Lines := Transaction.Params;
101	ParseParams;
102	Result := False;
103	if ShowModal = mrOk then
104	begin
105	Transaction.Params := TransactionParams.Lines;
106	Result := True;
107	end;
108	end;
109
110	type
111	TTransactionParam = (concurrency, read_committed, rec_version, nowait,
112	consistency, read, write);
113	TTransactionParams = set of TTransactionParam;
114
115	procedure TIBTransactionEditForm.ParseParams;
116	var
117	I: Integer;
118	st: string;
119	Value: TTransactionParams;
120
121	begin
122	Value := [];
123	for I := 0 to TransactionParams.Lines.Count - 1 do
124	begin
125	st := LowerCase(Trim(TransactionParams.Lines[I]));
126	if st = '' then
127	continue;
128	if st = 'concurrency' then
129	Include(Value, concurrency)
130	else if st = 'read_committed' then
131	Include(Value, read_committed)
132	else if st = 'rec_version' then
133	Include(Value, rec_version)
134	else if st = 'nowait' then
135	Include(Value, nowait)
136	else if st = 'read' then
137	Include(Value, read)
138	else if st = 'write' then
139	Include(Value, write)
140	else if st = 'consistency' then
141	Include(Value, consistency)
142	else begin
143	Value := [];
144	break;
145	end;
146	end;
147	ClearParamSelection;
148	if Value = [concurrency, nowait] then
149	rbSnapShot.Checked := True
150	else if Value = [read_committed, rec_version, nowait] then
151	rbReadCommitted.Checked := True
152	else if Value = [read, consistency] then
153	rbReadOnlyTableStability.Checked := True
154	else if Value = [write, consistency] then
155	rbReadWriteTableStability.Checked := True
156	else
157	rbOtherButton.Checked := true
158	end;
159
160	procedure TIBTransactionEditForm.ClearParamSelection;
161	begin
162	rbSnapShot.Checked := False;
163	rbReadCommitted.Checked := False;
164	rbReadOnlyTableStability.Checked := False;
165	rbReadWriteTableStability.Checked := False;
166	end;
167
168	procedure TIBTransactionEditForm.OKBtnClick(Sender: TObject);
169	begin
170	ModalResult := mrNone;
171	if Transaction.Active then
172	begin
173	if MessageDlg(SCommitTransaction, mtConfirmation,
174	mbOkCancel, 0) <> mrOk then Exit;
175	Transaction.Rollback;
176	end;
177	ModalResult := mrOk;
178	end;
179
180	procedure TIBTransactionEditForm.FormCreate(Sender: TObject);
181	begin
182	// HelpContext := hcDIBTransactionEdit;
183	end;
184
185	procedure TIBTransactionEditForm.HelpBtnClick(Sender: TObject);
186	begin
187	Application.HelpContext(HelpContext);
188	end;
189
190	procedure TIBTransactionEditForm.rbSnapShotClick(Sender: TObject);
191	begin
192	TransactionParams.clear;
193	TransactionParams.Lines.Add('concurrency'); { do not localize }
194	TransactionParams.Lines.Add('nowait'); { do not localize }
195	end;
196
197	procedure TIBTransactionEditForm.rbReadCommittedClick(Sender: TObject);
198	begin
199	TransactionParams.clear;
200	TransactionParams.Lines.Add('read_committed'); { do not localize }
201	TransactionParams.Lines.Add('rec_version'); { do not localize }
202	TransactionParams.Lines.Add('nowait'); { do not localize }
203	end;
204
205	procedure TIBTransactionEditForm.rbReadOnlyTableStabilityClick(Sender: TObject);
206	begin
207	TransactionParams.clear;
208	TransactionParams.Lines.Add('read'); { do not localize }
209	TransactionParams.Lines.Add('consistency'); { do not localize }
210	end;
211
212	procedure TIBTransactionEditForm.rbReadWriteTableStabilityClick(Sender: TObject);
213	begin
214	TransactionParams.clear;
215	TransactionParams.Lines.Add('write'); { do not localize }
216	TransactionParams.Lines.Add('consistency'); { do not localize }
217	end;
218
219	procedure TIBTransactionEditForm.TransactionParamsClick(Sender: TObject);
220	begin
221	ClearParamSelection;
222	end;
223
224	procedure TIBTransactionEditForm.TransactionParamsExit(Sender: TObject);
225	begin
226	ParseParams;
227	end;
228
229
230	end.