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, 2 months ago) by tony
Content type:	text/x-pascal
File size:	8182 byte(s)
Log Message:	Committing updates for Release pre-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	tony	5	{$Mode Delphi}
32
33	tony	1	interface
34
35	tony	5	uses
36			{$IFDEF LINUX }
37			unix,
38			{$ELSE}
39			Windows,
40			{$ENDIF}
41			SysUtils, Graphics, Classes, Controls, Db,
42	tony	1	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.