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, 3 months ago) by tony
Content type:	text/x-pascal
File size:	8129 byte(s)
Log Message:	Borland IBX Open Source Release
#	User	Rev	Content
1	tony	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.