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;

interface

uses Windows, SysUtils, Graphics, Classes, Controls, Db, StdVCL,
     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:	1
Committed:	Mon Jul 31 16:43:00 2000 UTC (24 years, 4 months ago) by tony
Content type:	text/x-pascal
File size:	8129 byte(s)
Log Message:	Borland IBX Open Source 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	interface
32
33	uses Windows, SysUtils, Graphics, Classes, Controls, Db, StdVCL,
34	IB, IBCustomDataSet, IBDatabase, IBTable;
35
36	type
37	TBatchMode = (batAppend, batUpdate, batAppendUpdate, batDelete, batCopy);
38
39	{ TBatchMove }
40
41	TIBBatchMove = class(TComponent)
42	private
43	FIBLoaded: Boolean;
44	FDestination: TIBTable;
45	FSource: TIBCustomDataSet;
46	FMode: TBatchMode;
47	FAbortOnKeyViol: Boolean;
48	FAbortOnProblem: Boolean;
49	FTransliterate: Boolean;
50	FRecordCount: Longint;
51	FMovedCount: Longint;
52	FKeyViolCount: Longint;
53	FProblemCount: Longint;
54	FChangedCount: Longint;
55	FMappings: TStrings;
56	FKeyViolTableName: TFileName;
57	FProblemTableName: TFileName;
58	FChangedTableName: TFileName;
59	FCommitCount: Integer;
60	procedure SetMappings(Value: TStrings);
61	procedure SetSource(Value: TIBCustomDataSet);
62	procedure InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
63	protected
64	procedure Notification(AComponent: TComponent;
65	Operation: TOperation); override;
66	public
67	constructor Create(AOwner: TComponent); override;
68	destructor Destroy; override;
69	procedure Execute;
70	public
71	property ChangedCount: Longint read FChangedCount;
72	property KeyViolCount: Longint read FKeyViolCount;
73	property MovedCount: Longint read FMovedCount;
74	property ProblemCount: Longint read FProblemCount;
75	published
76	property AbortOnKeyViol: Boolean read FAbortOnKeyViol write FAbortOnKeyViol
77	default True;
78	property AbortOnProblem: Boolean read FAbortOnProblem write FAbortOnProblem
79	default True;
80	property CommitCount: Integer read FCommitCount write FCommitCount default 0;
81	property ChangedTableName: TFileName read FChangedTableName write FChangedTableName;
82	property Destination: TIBTable read FDestination write FDestination;
83	property KeyViolTableName: TFileName read FKeyViolTableName write FKeyViolTableName;
84	property Mappings: TStrings read FMappings write SetMappings;
85	property Mode: TBatchMode read FMode write FMode default batAppend;
86	property ProblemTableName: TFileName read FProblemTableName write FProblemTableName;
87	property RecordCount: Longint read FRecordCount write FRecordCount default 0;
88	property Source: TIBCustomDataSet read FSource write SetSource;
89	property Transliterate: Boolean read FTransliterate write FTransliterate
90	default True;
91	end;
92
93	implementation
94
95	uses IBIntf;
96
97	{ TIBBatchMove }
98
99	constructor TIBBatchMove.Create(AOwner: TComponent);
100	begin
101	inherited Create(AOwner);
102	FIBLoaded := False;
103	CheckIBLoaded;
104	FIBLoaded := True;
105	FAbortOnKeyViol := True;
106	FAbortOnProblem := True;
107	FTransliterate := True;
108	FMappings := TStringList.Create;
109	end;
110
111	destructor TIBBatchMove.Destroy;
112	begin
113	if FIBLoaded then
114	FMappings.Free;
115	inherited Destroy;
116	end;
117
118	procedure TIBBatchMove.Execute;
119	type
120	TFieldMap = array of Word;
121	var
122	SourceActive, DestinationActive: Boolean;
123	BatchMode: TBatchMode;
124	I: Integer;
125	FieldCount: Word;
126	FieldMap: TFieldMap;
127	DestName, SourceName: string;
128
129	procedure GetMappingNames;
130	var
131	P: Integer;
132	Mapping: string;
133	begin
134	Mapping := FMappings[I];
135	P := Pos('=', Mapping); {MBCS OK}
136	if P > 0 then
137	begin
138	DestName := Copy(Mapping, 1, P - 1);
139	SourceName := Copy(Mapping, P + 1, 255);
140	end
141	else begin
142	DestName := Mapping;
143	SourceName := Mapping;
144	end;
145	end;
146
147	begin
148	if (Destination = nil) or (Source = nil) or (Destination = Source) then
149	IBError(ibxeInvalidBatchMove, [nil]);
150	SourceActive := Source.Active;
151	DestinationActive := Destination.Active;
152	FieldCount := 0;
153	FieldMap := nil;
154	try
155	Source.DisableControls;
156	Destination.DisableControls;
157	Source.Open;
158	Source.CheckBrowseMode;
159	Source.UpdateCursorPos;
160	BatchMode := FMode;
161	if BatchMode = batCopy then
162	begin
163	Destination.Close;
164	if FMappings.Count = 0 then
165	Destination.FieldDefs := Source.FieldDefs
166	else
167	begin
168	Destination.FieldDefs.Clear;
169	for I := 0 to FMappings.Count - 1 do
170	begin
171	GetMappingNames;
172	with Source.FieldDefs.Find(SourceName) do
173	Destination.FieldDefs.Add(DestName, DataType, Size, Required);
174	end;
175	end;
176	Destination.IndexDefs.Clear;
177	Destination.CreateTable;
178	BatchMode := batAppend;
179	end;
180	Destination.Open;
181	Destination.CheckBrowseMode;
182	if FMappings.Count <> 0 then
183	begin
184	FieldCount := Destination.FieldDefs.Count;
185	SetLength(FieldMap, FieldCount);
186	for I := 0 to FMappings.Count - 1 do
187	begin
188	GetMappingNames;
189	FieldMap[Destination.FieldDefs.Find(DestName).FieldNo-1] :=
190	Source.FieldDefs.Find(SourceName).FieldNo;
191	end;
192	end;
193	if FRecordCount > 0 then
194	begin
195	Source.UpdateCursorPos;
196	FMovedCount := FRecordCount;
197	end else
198	begin
199	FMovedCount := MaxLongint;
200	end;
201	Source.CursorPosChanged;
202	try
203	InternalExecute (BatchMode, FieldCount);
204	finally
205	if DestinationActive then Destination.First;
206	end;
207	finally
208	if not DestinationActive then
209	Destination.Close;
210	if not SourceActive then
211	Source.Close;
212	Destination.EnableControls;
213	Source.EnableControls;
214	end;
215	end;
216
217	procedure TIBBatchMove.Notification(AComponent: TComponent;
218	Operation: TOperation);
219	begin
220	inherited Notification(AComponent, Operation);
221	if Operation = opRemove then
222	begin
223	if Destination = AComponent then
224	Destination := nil;
225	if Source = AComponent then
226	Source := nil;
227	end;
228	end;
229
230	procedure TIBBatchMove.SetMappings(Value: TStrings);
231	begin
232	FMappings.Assign(Value);
233	end;
234
235	procedure TIBBatchMove.SetSource(Value: TIBCustomDataSet);
236	begin
237	FSource := Value;
238	if Value <> nil then
239	Value.FreeNotification(Self);
240	end;
241
242
243	procedure TIBBatchMove.InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
244	begin
245
246	end;
247
248	end.