trunk/runtime/IBBatchMove.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 IBBatchMove;

{$Mode Delphi}

interface

uses
{$IFDEF LINUX }
  unix,
{$ELSE}
  Windows,
{$ENDIF}
  SysUtils, Graphics, Classes, Controls, Db,
     IB, IBCustomDataSet, IBDatabase, IBTable;

type
  TBatchMode = (batAppend, batUpdate, batAppendUpdate, batDelete, batCopy);

{ TBatchMove }

  TIBBatchMove = class(TComponent)
  private
    FIBLoaded: Boolean;
    FDestination: TIBTable;
    FSource: TIBCustomDataSet;
    FMode: TBatchMode;
    FAbortOnKeyViol: Boolean;
    FAbortOnProblem: Boolean;
    FTransliterate: Boolean;
    FRecordCount: Longint;
    FMovedCount: Longint;
    FKeyViolCount: Longint;
    FProblemCount: Longint;
    FChangedCount: Longint;
    FMappings: TStrings;
    FKeyViolTableName: TFileName;
    FProblemTableName: TFileName;
    FChangedTableName: TFileName;
    FCommitCount: Integer;
    procedure SetMappings(Value: TStrings);
    procedure SetSource(Value: TIBCustomDataSet);
    procedure InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
  protected
    procedure Notification(AComponent: TComponent;
      Operation: TOperation); override;
  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure Execute;
  public
    property ChangedCount: Longint read FChangedCount;
    property KeyViolCount: Longint read FKeyViolCount;
    property MovedCount: Longint read FMovedCount;
    property ProblemCount: Longint read FProblemCount;
  published
    property AbortOnKeyViol: Boolean read FAbortOnKeyViol write FAbortOnKeyViol
                                                          default True;
    property AbortOnProblem: Boolean read FAbortOnProblem write FAbortOnProblem
                                                          default True;
    property CommitCount: Integer read FCommitCount write FCommitCount default 0;
    property ChangedTableName: TFileName read FChangedTableName write FChangedTableName;
    property Destination: TIBTable read FDestination write FDestination;
    property KeyViolTableName: TFileName read FKeyViolTableName write FKeyViolTableName;
    property Mappings: TStrings read FMappings write SetMappings;
    property Mode: TBatchMode read FMode write FMode default batAppend;
    property ProblemTableName: TFileName read FProblemTableName write FProblemTableName;
    property RecordCount: Longint read FRecordCount write FRecordCount default 0;
    property Source: TIBCustomDataSet read FSource write SetSource;
    property Transliterate: Boolean read FTransliterate write FTransliterate
                                                        default True;
  end;

implementation

uses IBIntf;

{ TIBBatchMove }

constructor TIBBatchMove.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FIBLoaded := False;
  CheckIBLoaded;
  FIBLoaded := True;
  FAbortOnKeyViol := True;
  FAbortOnProblem := True;
  FTransliterate := True;
  FMappings := TStringList.Create;
end;

destructor TIBBatchMove.Destroy;
begin
  if FIBLoaded then
  FMappings.Free;
  inherited Destroy;
end;

procedure TIBBatchMove.Execute;
type
  TFieldMap = array of Word;
var
  SourceActive, DestinationActive: Boolean;
  BatchMode: TBatchMode;
  I: Integer;
  FieldCount: Word;
  FieldMap: TFieldMap;
  DestName, SourceName: string;

  procedure GetMappingNames;
  var
    P: Integer;
    Mapping: string;
  begin
    Mapping := FMappings[I];
    P := Pos('=', Mapping); {MBCS OK}
    if P > 0 then
    begin
      DestName := Copy(Mapping, 1, P - 1);
      SourceName := Copy(Mapping, P + 1, 255);
    end
    else begin
      DestName := Mapping;
      SourceName := Mapping;
    end;
  end;

begin
  if (Destination = nil) or (Source = nil) or (Destination = Source) then
    IBError(ibxeInvalidBatchMove, [nil]);
  SourceActive := Source.Active;
  DestinationActive := Destination.Active;
  FieldCount := 0;
  FieldMap := nil;
  try
    Source.DisableControls;
    Destination.DisableControls;
    Source.Open;
    Source.CheckBrowseMode;
    Source.UpdateCursorPos;
    BatchMode := FMode;
    if BatchMode = batCopy then
    begin
      Destination.Close;
      if FMappings.Count = 0 then
        Destination.FieldDefs := Source.FieldDefs
      else
      begin
        Destination.FieldDefs.Clear;
        for I := 0 to FMappings.Count - 1 do
        begin
          GetMappingNames;
          with Source.FieldDefs.Find(SourceName) do
            Destination.FieldDefs.Add(DestName, DataType, Size, Required);
        end;
      end;
      Destination.IndexDefs.Clear;
      Destination.CreateTable;
      BatchMode := batAppend;
    end;
    Destination.Open;
    Destination.CheckBrowseMode;
    if FMappings.Count <> 0 then
    begin
      FieldCount := Destination.FieldDefs.Count;
      SetLength(FieldMap, FieldCount);
      for I := 0 to FMappings.Count - 1 do
      begin
        GetMappingNames;
        FieldMap[Destination.FieldDefs.Find(DestName).FieldNo-1] :=
          Source.FieldDefs.Find(SourceName).FieldNo;
      end;
    end;
    if FRecordCount > 0 then
    begin
      Source.UpdateCursorPos;
      FMovedCount := FRecordCount;
    end else
    begin
      FMovedCount := MaxLongint;
    end;
    Source.CursorPosChanged;
    try
      InternalExecute (BatchMode, FieldCount);
    finally
      if DestinationActive then Destination.First;
    end;
  finally
    if not DestinationActive then
      Destination.Close;
    if not SourceActive then
      Source.Close;
    Destination.EnableControls;
    Source.EnableControls;
  end;
end;

procedure TIBBatchMove.Notification(AComponent: TComponent;
  Operation: TOperation);
begin
  inherited Notification(AComponent, Operation);
  if Operation = opRemove then
  begin
    if Destination = AComponent then
      Destination := nil;
    if Source = AComponent then
      Source := nil;
  end;
end;

procedure TIBBatchMove.SetMappings(Value: TStrings);
begin
  FMappings.Assign(Value);
end;

procedure TIBBatchMove.SetSource(Value: TIBCustomDataSet);
begin
  FSource := Value;
  if Value <> nil then
    Value.FreeNotification(Self);
end;


procedure TIBBatchMove.InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
begin

end;

end.
Revision:	5
Committed:	Fri Feb 18 16:26:16 2011 UTC (13 years, 9 months ago) by tony
Content type:	text/x-pascal
File size:	8182 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 IBBatchMove;
30
31	{$Mode Delphi}
32
33	interface
34
35	uses
36	{$IFDEF LINUX }
37	unix,
38	{$ELSE}
39	Windows,
40	{$ENDIF}
41	SysUtils, Graphics, Classes, Controls, Db,
42	IB, IBCustomDataSet, IBDatabase, IBTable;
43
44	type
45	TBatchMode = (batAppend, batUpdate, batAppendUpdate, batDelete, batCopy);
46
47	{ TBatchMove }
48
49	TIBBatchMove = class(TComponent)
50	private
51	FIBLoaded: Boolean;
52	FDestination: TIBTable;
53	FSource: TIBCustomDataSet;
54	FMode: TBatchMode;
55	FAbortOnKeyViol: Boolean;
56	FAbortOnProblem: Boolean;
57	FTransliterate: Boolean;
58	FRecordCount: Longint;
59	FMovedCount: Longint;
60	FKeyViolCount: Longint;
61	FProblemCount: Longint;
62	FChangedCount: Longint;
63	FMappings: TStrings;
64	FKeyViolTableName: TFileName;
65	FProblemTableName: TFileName;
66	FChangedTableName: TFileName;
67	FCommitCount: Integer;
68	procedure SetMappings(Value: TStrings);
69	procedure SetSource(Value: TIBCustomDataSet);
70	procedure InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
71	protected
72	procedure Notification(AComponent: TComponent;
73	Operation: TOperation); override;
74	public
75	constructor Create(AOwner: TComponent); override;
76	destructor Destroy; override;
77	procedure Execute;
78	public
79	property ChangedCount: Longint read FChangedCount;
80	property KeyViolCount: Longint read FKeyViolCount;
81	property MovedCount: Longint read FMovedCount;
82	property ProblemCount: Longint read FProblemCount;
83	published
84	property AbortOnKeyViol: Boolean read FAbortOnKeyViol write FAbortOnKeyViol
85	default True;
86	property AbortOnProblem: Boolean read FAbortOnProblem write FAbortOnProblem
87	default True;
88	property CommitCount: Integer read FCommitCount write FCommitCount default 0;
89	property ChangedTableName: TFileName read FChangedTableName write FChangedTableName;
90	property Destination: TIBTable read FDestination write FDestination;
91	property KeyViolTableName: TFileName read FKeyViolTableName write FKeyViolTableName;
92	property Mappings: TStrings read FMappings write SetMappings;
93	property Mode: TBatchMode read FMode write FMode default batAppend;
94	property ProblemTableName: TFileName read FProblemTableName write FProblemTableName;
95	property RecordCount: Longint read FRecordCount write FRecordCount default 0;
96	property Source: TIBCustomDataSet read FSource write SetSource;
97	property Transliterate: Boolean read FTransliterate write FTransliterate
98	default True;
99	end;
100
101	implementation
102
103	uses IBIntf;
104
105	{ TIBBatchMove }
106
107	constructor TIBBatchMove.Create(AOwner: TComponent);
108	begin
109	inherited Create(AOwner);
110	FIBLoaded := False;
111	CheckIBLoaded;
112	FIBLoaded := True;
113	FAbortOnKeyViol := True;
114	FAbortOnProblem := True;
115	FTransliterate := True;
116	FMappings := TStringList.Create;
117	end;
118
119	destructor TIBBatchMove.Destroy;
120	begin
121	if FIBLoaded then
122	FMappings.Free;
123	inherited Destroy;
124	end;
125
126	procedure TIBBatchMove.Execute;
127	type
128	TFieldMap = array of Word;
129	var
130	SourceActive, DestinationActive: Boolean;
131	BatchMode: TBatchMode;
132	I: Integer;
133	FieldCount: Word;
134	FieldMap: TFieldMap;
135	DestName, SourceName: string;
136
137	procedure GetMappingNames;
138	var
139	P: Integer;
140	Mapping: string;
141	begin
142	Mapping := FMappings[I];
143	P := Pos('=', Mapping); {MBCS OK}
144	if P > 0 then
145	begin
146	DestName := Copy(Mapping, 1, P - 1);
147	SourceName := Copy(Mapping, P + 1, 255);
148	end
149	else begin
150	DestName := Mapping;
151	SourceName := Mapping;
152	end;
153	end;
154
155	begin
156	if (Destination = nil) or (Source = nil) or (Destination = Source) then
157	IBError(ibxeInvalidBatchMove, [nil]);
158	SourceActive := Source.Active;
159	DestinationActive := Destination.Active;
160	FieldCount := 0;
161	FieldMap := nil;
162	try
163	Source.DisableControls;
164	Destination.DisableControls;
165	Source.Open;
166	Source.CheckBrowseMode;
167	Source.UpdateCursorPos;
168	BatchMode := FMode;
169	if BatchMode = batCopy then
170	begin
171	Destination.Close;
172	if FMappings.Count = 0 then
173	Destination.FieldDefs := Source.FieldDefs
174	else
175	begin
176	Destination.FieldDefs.Clear;
177	for I := 0 to FMappings.Count - 1 do
178	begin
179	GetMappingNames;
180	with Source.FieldDefs.Find(SourceName) do
181	Destination.FieldDefs.Add(DestName, DataType, Size, Required);
182	end;
183	end;
184	Destination.IndexDefs.Clear;
185	Destination.CreateTable;
186	BatchMode := batAppend;
187	end;
188	Destination.Open;
189	Destination.CheckBrowseMode;
190	if FMappings.Count <> 0 then
191	begin
192	FieldCount := Destination.FieldDefs.Count;
193	SetLength(FieldMap, FieldCount);
194	for I := 0 to FMappings.Count - 1 do
195	begin
196	GetMappingNames;
197	FieldMap[Destination.FieldDefs.Find(DestName).FieldNo-1] :=
198	Source.FieldDefs.Find(SourceName).FieldNo;
199	end;
200	end;
201	if FRecordCount > 0 then
202	begin
203	Source.UpdateCursorPos;
204	FMovedCount := FRecordCount;
205	end else
206	begin
207	FMovedCount := MaxLongint;
208	end;
209	Source.CursorPosChanged;
210	try
211	InternalExecute (BatchMode, FieldCount);
212	finally
213	if DestinationActive then Destination.First;
214	end;
215	finally
216	if not DestinationActive then
217	Destination.Close;
218	if not SourceActive then
219	Source.Close;
220	Destination.EnableControls;
221	Source.EnableControls;
222	end;
223	end;
224
225	procedure TIBBatchMove.Notification(AComponent: TComponent;
226	Operation: TOperation);
227	begin
228	inherited Notification(AComponent, Operation);
229	if Operation = opRemove then
230	begin
231	if Destination = AComponent then
232	Destination := nil;
233	if Source = AComponent then
234	Source := nil;
235	end;
236	end;
237
238	procedure TIBBatchMove.SetMappings(Value: TStrings);
239	begin
240	FMappings.Assign(Value);
241	end;
242
243	procedure TIBBatchMove.SetSource(Value: TIBCustomDataSet);
244	begin
245	FSource := Value;
246	if Value <> nil then
247	Value.FreeNotification(Self);
248	end;
249
250
251	procedure TIBBatchMove.InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
252	begin
253
254	end;
255
256	end.