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:	17
Committed:	Sat Dec 28 19:22:24 2013 UTC (10 years, 3 months ago) by tony
Content type:	text/x-pascal
File size:	7428 byte(s)
Log Message:	Committing updates for Release R1-0-5
#	User	Rev	Content
1	tony	17	{************************************************************************}
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.