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                                       }
{                                                                        }
{    IBX For Lazarus (Firebird Express)                                  }
{    Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
{    Portions created by MWA Software are copyright McCallum Whyman      }
{    Associates Ltd 2011 - 2018                                               }
{                                                                        }
{************************************************************************}

unit IBBatchMove;

{$Mode Delphi}

interface

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

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

{ TBatchMove }

  TIBBatchMove = class(TComponent)
  private
    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 FBMessages;

{ TIBBatchMove }

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

destructor TIBBatchMove.Destroy;
begin
  if FMappings <> nil 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:	143
Committed:	Fri Feb 23 12:11:21 2018 UTC (6 years, 8 months ago) by tony
Content type:	text/x-pascal
File size:	8474 byte(s)
Log Message:	Fixes Merged
#	User	Rev	Content
1	tony	33	{************************************************************************}
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			{ IBX For Lazarus (Firebird Express) }
28			{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
29			{ Portions created by MWA Software are copyright McCallum Whyman }
30	tony	143	{ Associates Ltd 2011 - 2018 }
31	tony	33	{ }
32			{************************************************************************}
33
34			unit IBBatchMove;
35
36			{$Mode Delphi}
37
38			interface
39
40			uses
41			{$IFDEF WINDOWS }
42			Windows,
43			{$ELSE}
44			unix,
45			{$ENDIF}
46			SysUtils, Classes, Db,
47			IB, IBCustomDataSet, IBDatabase, IBTable;
48
49			type
50			TBatchMode = (batAppend, batUpdate, batAppendUpdate, batDelete, batCopy);
51
52			{ TBatchMove }
53
54			TIBBatchMove = class(TComponent)
55			private
56			FDestination: TIBTable;
57			FSource: TIBCustomDataSet;
58			FMode: TBatchMode;
59			FAbortOnKeyViol: Boolean;
60			FAbortOnProblem: Boolean;
61			FTransliterate: Boolean;
62			FRecordCount: Longint;
63			FMovedCount: Longint;
64			FKeyViolCount: Longint;
65			FProblemCount: Longint;
66			FChangedCount: Longint;
67			FMappings: TStrings;
68			FKeyViolTableName: TFileName;
69			FProblemTableName: TFileName;
70			FChangedTableName: TFileName;
71			FCommitCount: Integer;
72			procedure SetMappings(Value: TStrings);
73			procedure SetSource(Value: TIBCustomDataSet);
74			procedure InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
75			protected
76			procedure Notification(AComponent: TComponent;
77			Operation: TOperation); override;
78			public
79			constructor Create(AOwner: TComponent); override;
80			destructor Destroy; override;
81			procedure Execute;
82			public
83			property ChangedCount: Longint read FChangedCount;
84			property KeyViolCount: Longint read FKeyViolCount;
85			property MovedCount: Longint read FMovedCount;
86			property ProblemCount: Longint read FProblemCount;
87			published
88			property AbortOnKeyViol: Boolean read FAbortOnKeyViol write FAbortOnKeyViol
89			default True;
90			property AbortOnProblem: Boolean read FAbortOnProblem write FAbortOnProblem
91			default True;
92			property CommitCount: Integer read FCommitCount write FCommitCount default 0;
93			property ChangedTableName: TFileName read FChangedTableName write FChangedTableName;
94			property Destination: TIBTable read FDestination write FDestination;
95			property KeyViolTableName: TFileName read FKeyViolTableName write FKeyViolTableName;
96			property Mappings: TStrings read FMappings write SetMappings;
97			property Mode: TBatchMode read FMode write FMode default batAppend;
98			property ProblemTableName: TFileName read FProblemTableName write FProblemTableName;
99			property RecordCount: Longint read FRecordCount write FRecordCount default 0;
100			property Source: TIBCustomDataSet read FSource write SetSource;
101			property Transliterate: Boolean read FTransliterate write FTransliterate
102			default True;
103			end;
104
105			implementation
106
107	tony	45	uses FBMessages;
108	tony	33
109			{ TIBBatchMove }
110
111			constructor TIBBatchMove.Create(AOwner: TComponent);
112			begin
113			inherited Create(AOwner);
114			FAbortOnKeyViol := True;
115			FAbortOnProblem := True;
116			FTransliterate := True;
117			FMappings := TStringList.Create;
118			end;
119
120			destructor TIBBatchMove.Destroy;
121			begin
122	tony	45	if FMappings <> nil then
123			FMappings.Free;
124	tony	33	inherited Destroy;
125			end;
126
127			procedure TIBBatchMove.Execute;
128			type
129			TFieldMap = array of Word;
130			var
131			SourceActive, DestinationActive: Boolean;
132			BatchMode: TBatchMode;
133			I: Integer;
134			FieldCount: Word;
135			FieldMap: TFieldMap;
136			DestName, SourceName: string;
137
138			procedure GetMappingNames;
139			var
140			P: Integer;
141			Mapping: string;
142			begin
143			Mapping := FMappings[I];
144			P := Pos('=', Mapping); {MBCS OK}
145			if P > 0 then
146			begin
147			DestName := Copy(Mapping, 1, P - 1);
148			SourceName := Copy(Mapping, P + 1, 255);
149			end
150			else begin
151			DestName := Mapping;
152			SourceName := Mapping;
153			end;
154			end;
155
156			begin
157			if (Destination = nil) or (Source = nil) or (Destination = Source) then
158			IBError(ibxeInvalidBatchMove, [nil]);
159			SourceActive := Source.Active;
160			DestinationActive := Destination.Active;
161			FieldCount := 0;
162			FieldMap := nil;
163			try
164			Source.DisableControls;
165			Destination.DisableControls;
166			Source.Open;
167			Source.CheckBrowseMode;
168			Source.UpdateCursorPos;
169			BatchMode := FMode;
170			if BatchMode = batCopy then
171			begin
172			Destination.Close;
173			if FMappings.Count = 0 then
174			Destination.FieldDefs := Source.FieldDefs
175			else
176			begin
177			Destination.FieldDefs.Clear;
178			for I := 0 to FMappings.Count - 1 do
179			begin
180			GetMappingNames;
181			with Source.FieldDefs.Find(SourceName) do
182			Destination.FieldDefs.Add(DestName, DataType, Size, Required);
183			end;
184			end;
185			Destination.IndexDefs.Clear;
186			Destination.CreateTable;
187			BatchMode := batAppend;
188			end;
189			Destination.Open;
190			Destination.CheckBrowseMode;
191			if FMappings.Count <> 0 then
192			begin
193			FieldCount := Destination.FieldDefs.Count;
194			SetLength(FieldMap, FieldCount);
195			for I := 0 to FMappings.Count - 1 do
196			begin
197			GetMappingNames;
198			FieldMap[Destination.FieldDefs.Find(DestName).FieldNo-1] :=
199			Source.FieldDefs.Find(SourceName).FieldNo;
200			end;
201			end;
202			if FRecordCount > 0 then
203			begin
204			Source.UpdateCursorPos;
205			FMovedCount := FRecordCount;
206			end else
207			begin
208			FMovedCount := MaxLongint;
209			end;
210			Source.CursorPosChanged;
211			try
212			InternalExecute (BatchMode, FieldCount);
213			finally
214			if DestinationActive then Destination.First;
215			end;
216			finally
217			if not DestinationActive then
218			Destination.Close;
219			if not SourceActive then
220			Source.Close;
221			Destination.EnableControls;
222			Source.EnableControls;
223			end;
224			end;
225
226			procedure TIBBatchMove.Notification(AComponent: TComponent;
227			Operation: TOperation);
228			begin
229			inherited Notification(AComponent, Operation);
230			if Operation = opRemove then
231			begin
232			if Destination = AComponent then
233			Destination := nil;
234			if Source = AComponent then
235			Source := nil;
236			end;
237			end;
238
239			procedure TIBBatchMove.SetMappings(Value: TStrings);
240			begin
241			FMappings.Assign(Value);
242			end;
243
244			procedure TIBBatchMove.SetSource(Value: TIBCustomDataSet);
245			begin
246			FSource := Value;
247			if Value <> nil then
248			Value.FreeNotification(Self);
249			end;
250
251
252			procedure TIBBatchMove.InternalExecute (BatchMode: TBatchMode; FieldCount: Word);
253			begin
254
255			end;
256
257			end.