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 }

  TIBTransactionEditForm = class(TForm)
    GroupBox1: TGroupBox;
    HelpBtn: TButton;
    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

{$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:	33
Committed:	Sat Jul 18 12:30:52 2015 UTC (9 years, 5 months ago) by tony
Content type:	text/x-pascal
File size:	7308 byte(s)
Log Message:	Committing updates for Release R1-3-1
#	User	Rev	Content
1	tony	33	{************************************************************************}
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			{$MODE Delphi}
32
33			interface
34
35			uses
36			{Windows,} Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
37			StdCtrls, IBDataBase, IB, ExtCtrls, IBXConst, LResources;
38
39			type
40
41			{ TIBTransactionEditForm }
42
43			TIBTransactionEditForm = class(TForm)
44			GroupBox1: TGroupBox;
45			HelpBtn: TButton;
46			Cancelbtn: TButton;
47			OKBtn: TButton;
48			rbOtherButton: TRadioButton;
49			rbSnapShot: TRadioButton;
50			rbReadCommitted: TRadioButton;
51			rbReadOnlyTableStability: TRadioButton;
52			rbReadWriteTableStability: TRadioButton;
53			TransactionParams: TMemo;
54			Panel1: TPanel;
55			Label1: TLabel;
56			procedure OKBtnClick(Sender: TObject);
57			procedure rbSnapShotClick(Sender: TObject);
58			procedure rbReadCommittedClick(Sender: TObject);
59			procedure rbReadOnlyTableStabilityClick(Sender: TObject);
60			procedure rbReadWriteTableStabilityClick(Sender: TObject);
61			procedure FormCreate(Sender: TObject);
62			procedure HelpBtnClick(Sender: TObject);
63			procedure TransactionParamsClick(Sender: TObject);
64			procedure TransactionParamsExit(Sender: TObject);
65
66			private
67			{ Private declarations }
68			Transaction: TIBTransaction;
69			function Edit: Boolean;
70			procedure ParseParams;
71			procedure ClearParamSelection;
72
73			public
74			{ Public declarations }
75			end;
76
77			var
78			IBTransactionEditForm: TIBTransactionEditForm;
79
80			function EditIBtransaction(Atransaction: TIBtransaction): Boolean;
81
82			implementation
83
84			{$R *.lfm}
85
86			function EditIBtransaction(ATransaction: TIBtransaction): Boolean;
87			begin
88			with TIBtransactionEditForm.Create(Application) do
89			try
90			Transaction := ATransaction;
91			Result := Edit;
92			finally
93			Free;
94			end;
95			end;
96
97			function TIBtransactionEditForm.Edit: Boolean;
98			begin
99			TransactionParams.Lines := Transaction.Params;
100			ParseParams;
101			Result := False;
102			if ShowModal = mrOk then
103			begin
104			Transaction.Params := TransactionParams.Lines;
105			Result := True;
106			end;
107			end;
108
109			type
110			TTransactionParam = (concurrency, read_committed, rec_version, nowait,
111			consistency, read, write);
112			TTransactionParams = set of TTransactionParam;
113
114			procedure TIBTransactionEditForm.ParseParams;
115			var
116			I: Integer;
117			st: string;
118			Value: TTransactionParams;
119
120			begin
121			Value := [];
122			for I := 0 to TransactionParams.Lines.Count - 1 do
123			begin
124			st := LowerCase(Trim(TransactionParams.Lines[I]));
125			if st = '' then
126			continue;
127			if st = 'concurrency' then
128			Include(Value, concurrency)
129			else if st = 'read_committed' then
130			Include(Value, read_committed)
131			else if st = 'rec_version' then
132			Include(Value, rec_version)
133			else if st = 'nowait' then
134			Include(Value, nowait)
135			else if st = 'read' then
136			Include(Value, read)
137			else if st = 'write' then
138			Include(Value, write)
139			else if st = 'consistency' then
140			Include(Value, consistency)
141			else begin
142			Value := [];
143			break;
144			end;
145			end;
146			ClearParamSelection;
147			if Value = [concurrency, nowait] then
148			rbSnapShot.Checked := True
149			else if Value = [read_committed, rec_version, nowait] then
150			rbReadCommitted.Checked := True
151			else if Value = [read, consistency] then
152			rbReadOnlyTableStability.Checked := True
153			else if Value = [write, consistency] then
154			rbReadWriteTableStability.Checked := True
155			else
156			rbOtherButton.Checked := true
157			end;
158
159			procedure TIBTransactionEditForm.ClearParamSelection;
160			begin
161			rbSnapShot.Checked := False;
162			rbReadCommitted.Checked := False;
163			rbReadOnlyTableStability.Checked := False;
164			rbReadWriteTableStability.Checked := False;
165			end;
166
167			procedure TIBTransactionEditForm.OKBtnClick(Sender: TObject);
168			begin
169			ModalResult := mrNone;
170			if Transaction.Active then
171			begin
172			if MessageDlg(SCommitTransaction, mtConfirmation,
173			mbOkCancel, 0) <> mrOk then Exit;
174			Transaction.Rollback;
175			end;
176			ModalResult := mrOk;
177			end;
178
179			procedure TIBTransactionEditForm.FormCreate(Sender: TObject);
180			begin
181			// HelpContext := hcDIBTransactionEdit;
182			end;
183
184			procedure TIBTransactionEditForm.HelpBtnClick(Sender: TObject);
185			begin
186			Application.HelpContext(HelpContext);
187			end;
188
189			procedure TIBTransactionEditForm.rbSnapShotClick(Sender: TObject);
190			begin
191			TransactionParams.clear;
192			TransactionParams.Lines.Add('concurrency'); { do not localize }
193			TransactionParams.Lines.Add('nowait'); { do not localize }
194			end;
195
196			procedure TIBTransactionEditForm.rbReadCommittedClick(Sender: TObject);
197			begin
198			TransactionParams.clear;
199			TransactionParams.Lines.Add('read_committed'); { do not localize }
200			TransactionParams.Lines.Add('rec_version'); { do not localize }
201			TransactionParams.Lines.Add('nowait'); { do not localize }
202			end;
203
204			procedure TIBTransactionEditForm.rbReadOnlyTableStabilityClick(Sender: TObject);
205			begin
206			TransactionParams.clear;
207			TransactionParams.Lines.Add('read'); { do not localize }
208			TransactionParams.Lines.Add('consistency'); { do not localize }
209			end;
210
211			procedure TIBTransactionEditForm.rbReadWriteTableStabilityClick(Sender: TObject);
212			begin
213			TransactionParams.clear;
214			TransactionParams.Lines.Add('write'); { do not localize }
215			TransactionParams.Lines.Add('consistency'); { do not localize }
216			end;
217
218			procedure TIBTransactionEditForm.TransactionParamsClick(Sender: TObject);
219			begin
220			ClearParamSelection;
221			end;
222
223			procedure TIBTransactionEditForm.TransactionParamsExit(Sender: TObject);
224			begin
225			ParseParams;
226			end;
227
228
229			end.