trunk/runtime/IBQuery.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                                                 }
{                                                                        }
{************************************************************************}

unit IBQuery;

interface

{$Mode Delphi}

uses
{$IFDEF WINDOWS }
  Windows,
{$ELSE}
  unix,
{$ENDIF}
 SysUtils, Graphics, Classes, Controls, Db,
     IBHeader, IB, IBCustomDataSet, IBSQL, IBSQLParser;

type

{ TIBQuery }

  TIBQuery = class(TIBParserDataSet)
  private
    FSQL: TStrings;
    FPrepared: Boolean;
    FParams: TParams;
    FText: string;
    FRowsAffected: Integer;
    FCheckRowsAffected: Boolean;
    FSQLUpdating: boolean;
    function GetRowsAffected: Integer;
    procedure PrepareSQL(Value: PChar);
    procedure QueryChanged(Sender: TObject);
    procedure ReadParamData(Reader: TReader);
    procedure SetQuery(Value: TStrings);
    procedure SetParamsList(Value: TParams);
    procedure SetParams;
    procedure SetParamsFromCursor;
    procedure SetPrepared(Value: Boolean);
    procedure SetPrepare(Value: Boolean);
    procedure WriteParamData(Writer: TWriter);
    function GetStmtHandle: TISC_STMT_HANDLE;

  protected
    { IProviderSupport }
(*    procedure PSExecute; override;
    function PSGetParams: TParams; override;
    function PSGetTableName: string; override;
    procedure PSSetCommandText(const CommandText: string); override;
    procedure PSSetParams(AParams: TParams); override;  *)

    function CreateParser: TSelectSQLParser; override;
    procedure DefineProperties(Filer: TFiler); override;
    procedure InitFieldDefs; override;
    procedure InternalOpen; override;
    procedure Disconnect; override;
    function GetParamsCount: Word;
    function GenerateQueryForLiveUpdate : Boolean;
    procedure SetFiltered(Value: Boolean); override;

  public
    constructor Create(AOwner: TComponent); override;
    destructor Destroy; override;
    procedure BatchInput(InputObject: TIBBatchInput);
    procedure BatchOutput(OutputObject: TIBBatchOutput);
    procedure ExecSQL;
    procedure GetDetailLinkFields(MasterFields, DetailFields: TList);(* override;*)
    function ParamByName(const Value: string): TParam;
    procedure Prepare;
    procedure UnPrepare;
    property Prepared: Boolean read FPrepared write SetPrepare;
    property ParamCount: Word read GetParamsCount;
    property StmtHandle: TISC_STMT_HANDLE read GetStmtHandle;
    property StatementType;
    property Text: string read FText;
    property RowsAffected: Integer read GetRowsAffected;
 //   property Params: TParams read FParams write SetParamsList;
    property BaseSQLSelect;

  published
    property Active;
    property AutoCommit;
    property BufferChunks;
    property CachedUpdates;
    property DataSource read GetDataSource write SetDataSource;
    property GenerateParamNames;
 //   property Constraints stored ConstraintsStored;
    property GeneratorField;
    property ParamCheck;
    property SQL: TStrings read FSQL write SetQuery;
    property Params: TParams read FParams write SetParamsList;
    property UniDirectional default False;
    property UpdateObject;
    property Filtered;

    property BeforeDatabaseDisconnect;
    property AfterDatabaseDisconnect;
    property DatabaseFree;
    property BeforeTransactionEnd;
    property AfterTransactionEnd;
    property TransactionFree;
    property OnFilterRecord;
end;

implementation

{ TIBQuery }

constructor TIBQuery.Create(AOwner: TComponent);
begin
  inherited Create(AOwner);
  FSQL := TStringList.Create;
  TStringList(SQL).OnChange := QueryChanged;
  FParams := TParams.Create(Self);
  ParamCheck := True;
  FRowsAffected := -1;
end;

destructor TIBQuery.Destroy;
begin
  Destroying;
  Disconnect;
  SQL.Free;
  FParams.Free;
  inherited Destroy;
end;

procedure TIBQuery.InitFieldDefs;
begin
  inherited InitFieldDefs;
end;

procedure TIBQuery.InternalOpen;
begin
  ActivateConnection();
  ActivateTransaction;
  QSelect.GenerateParamNames := GenerateParamNames;
  SetPrepared(True);
  if DataSource <> nil then
    SetParamsFromCursor;
  SetParams;
  inherited InternalOpen;
end;

procedure TIBQuery.Disconnect;
begin
  Close;
  UnPrepare;
end;

procedure TIBQuery.SetPrepare(Value: Boolean);
begin
  if Value then
    Prepare
  else
    UnPrepare;
end;

procedure TIBQuery.Prepare;
begin
  SetPrepared(True);
end;

procedure TIBQuery.UnPrepare;
begin
  SetPrepared(False);
end;

procedure TIBQuery.SetQuery(Value: TStrings);
begin
  if SQL.Text <> Value.Text then
  begin
    Disconnect;
    SQL.BeginUpdate;
    try
      SQL.Assign(Value);
    finally
      SQL.EndUpdate;
    end;
  end;
end;

procedure TIBQuery.QueryChanged(Sender: TObject);
var
  List: TParams;
begin
  if not (csReading in ComponentState) then
  begin
    Disconnect;
    if HasParser and not FSQLUpdating then
    begin
      FSQLUpdating := true;
      try
        SQL.Text := Parser.SQLText;
      finally
        FSQLUpdating := false
      end;
    end;
    if ParamCheck or (csDesigning in ComponentState) then
    begin
      List := TParams.Create(Self);
      try
        FText := List.ParseSQL(SQL.Text, True);
        List.AssignValues(FParams);
        FParams.Clear;
        FParams.Assign(List);
      finally
        List.Free;
      end;
    end else
      FText := SQL.Text;
    DataEvent(dePropertyChange, 0);
  end else
    FText := FParams.ParseSQL(SQL.Text, true);
  SelectSQL.Assign(SQL);
end;

procedure TIBQuery.SetParamsList(Value: TParams);
begin
  FParams.AssignValues(Value);
end;

function TIBQuery.GetParamsCount: Word;
begin
  Result := FParams.Count;
end;

procedure TIBQuery.DefineProperties(Filer: TFiler);

  function WriteData: Boolean;
  begin
  {The following results in a stream read error with nested frames. Hence commented out until
   someone fixes the LCL }
{    if Filer.Ancestor <> nil then
      Result := not FParams.IsEqual(TIBQuery(Filer.Ancestor).FParams) else}
      Result := FParams.Count > 0;
  end;

begin
  inherited DefineProperties(Filer);
  Filer.DefineProperty('ParamData', ReadParamData, WriteParamData, WriteData); {do not localize}
end;


procedure TIBQuery.ReadParamData(Reader: TReader);
begin
  FParams.Clear;
  Reader.ReadValue;
  Reader.ReadCollection(FParams);
end;

procedure TIBQuery.WriteParamData(Writer: TWriter);
begin
  Writer.WriteCollection(Params);
end;

procedure TIBQuery.SetPrepared(Value: Boolean);
begin
  CheckDatasetClosed;
  if Value <> Prepared then
  begin
    if Value then
    begin
      FRowsAffected := -1;
      FCheckRowsAffected := True;
      if Length(Text) > 1 then PrepareSQL(PChar(Text))
      else IBError(ibxeEmptySQLStatement, [nil]);
    end
    else
    begin
      if FCheckRowsAffected then
        FRowsAffected := RowsAffected;
      InternalUnPrepare;
    end;
    FPrepared := Value;
  end;
end;

procedure TIBQuery.SetParamsFromCursor;
var
  I: Integer;
  DataSet: TDataSet;
  Field: TField;

  procedure CheckRequiredParams;
  var
    I: Integer;
  begin
    for I := 0 to FParams.Count - 1 do
    with FParams[I] do
      if not Bound then
        IBError(ibxeRequiredParamNotSet, [nil]);
  end;

begin
  if DataSource <> nil then
  begin
    DataSet := DataSource.DataSet;
    if DataSet <> nil then
    begin
      DataSet.FieldDefs.Update;
      for I := 0 to FParams.Count - 1 do
      if not FParams[I].Bound then
      begin
        Field := DataSet.FindField(FParams[I].Name);
        if assigned(Field) then
        begin
            FParams[I].AssignField(Field);
            FParams[I].Bound := False;
        end;
      end;
    end
    else
      CheckRequiredParams;
  end
  else
    CheckRequiredParams;
end;


function TIBQuery.ParamByName(const Value: string): TParam;
begin
  Result := FParams.ParamByName(Value);
end;

procedure TIBQuery.BatchInput(InputObject: TIBBatchInput);
begin
  InternalBatchInput(InputObject);
end;

procedure TIBQuery.BatchOutput(OutputObject: TIBBatchOutput);
begin
  InternalBatchOutput(OutputObject);
end;

procedure TIBQuery.ExecSQL;
var
  DidActivate: Boolean;
begin
  CheckInActive;
  if SQL.Count <= 0 then
  begin
    FCheckRowsAffected := False;
    IBError(ibxeEmptySQLStatement, [nil]);
  end;
  ActivateConnection();
  DidActivate := ActivateTransaction;
  try
    SetPrepared(True);
    if DataSource <> nil then SetParamsFromCursor;
    if FParams.Count > 0 then SetParams;
    InternalExecQuery;
  finally
    if DidActivate then
      DeactivateTransaction;
    FCheckRowsAffected := True;
  end;
end;

procedure TIBQuery.SetParams;

var
i : integer;
Buffer: Pointer;
SQLParam: TIBXSQLVAR;

begin
  for I := 0 to FParams.Count - 1 do
  begin
    SQLParam :=  SQLParams.ByName(Params[i].Name);
    if Params[i].IsNull then
      SQLParam.IsNull := True
    else begin
      SQLParam.IsNull := False;
      case Params[i].DataType of
        ftBytes:
        begin
          GetMem(Buffer,Params[i].GetDataSize);
          try
            Params[i].GetData(Buffer);
            SQLParam.AsPointer := Buffer;
          finally
            FreeMem(Buffer);
          end;
        end;
        ftString:
          SQLParam.AsString := Params[i].AsString;
        ftBoolean:
          SQLParam.AsBoolean := Params[i].AsBoolean;
        ftSmallint, ftWord:
          SQLParam.AsShort := Params[i].AsSmallInt;
        ftInteger:
          SQLParam.AsLong := Params[i].AsInteger;
        ftLargeInt:
          SQLParam.AsInt64 := Params[i].AsLargeInt;
        ftFloat:
         SQLParam.AsDouble := Params[i].AsFloat;
        ftBCD, ftCurrency:
          SQLParam.AsCurrency := Params[i].AsCurrency;
        ftDate:
          SQLParam.AsDate := Params[i].AsDateTime;
        ftTime:
          SQLParam.AsTime := Params[i].AsDateTime;
        ftDateTime:
          SQLParam.AsDateTime := Params[i].AsDateTime;
        ftBlob, ftMemo:
          SQLParam.AsString := Params[i].AsString;
        else
          IBError(ibxeNotSupported, [nil]);
      end;
    end;
  end;
end;

procedure TIBQuery.PrepareSQL(Value: PChar);
begin
  QSelect.GenerateParamNames := GenerateParamNames;
  InternalPrepare;
end;


function TIBQuery.GetRowsAffected: Integer;
begin
  Result := -1;
  if Prepared then
   Result := QSelect.RowsAffected
end;


procedure TIBQuery.GetDetailLinkFields(MasterFields, DetailFields: TList);

  function AddFieldToList(const FieldName: string; DataSet: TDataSet;
    List: TList): Boolean;
  var
    Field: TField;
  begin
    Field := DataSet.FindField(FieldName);
    if (Field <> nil) then
      List.Add(Field);
    Result := Field <> nil;
  end;

var
  i: Integer;
begin
  MasterFields.Clear;
  DetailFields.Clear;
  if (DataSource <> nil) and (DataSource.DataSet <> nil) then
    for i := 0 to Params.Count - 1 do
      if AddFieldToList(Params[i].Name, DataSource.DataSet, MasterFields) then
        AddFieldToList(Params[i].Name, Self, DetailFields);
end;

function TIBQuery.GetStmtHandle: TISC_STMT_HANDLE;
begin
  Result := SelectStmtHandle;
end;

function TIBQuery.CreateParser: TSelectSQLParser;
begin
  Result := inherited CreateParser;
  Result.OnSQLChanging := QueryChanged;
end;

function TIBQuery.GenerateQueryForLiveUpdate : Boolean;
begin
  Result := False;
end;

procedure TIBQuery.SetFiltered(Value: Boolean);
begin
  if(Filtered <> Value) then
  begin
    inherited SetFiltered(value);
    if Active then
    begin
      Close;
      Open;
    end;
  end
  else
    inherited SetFiltered(value);
end;

{ TIBQuery IProviderSupport }
 (*
function TIBQuery.PSGetParams: TParams;
begin
  Result := Params;
end;

procedure TIBQuery.PSSetParams(AParams: TParams);
begin
  if AParams.Count <> 0 then
    Params.Assign(AParams);
  Close;
end;

function TIBQuery.PSGetTableName: string;
begin
  Result := inherited PSGetTableName;
end;

procedure TIBQuery.PSExecute;
begin
  ExecSQL;
end;

procedure TIBQuery.PSSetCommandText(const CommandText: string);
begin
  if CommandText <> '' then
    SQL.Text := CommandText;
end;
 *)
end.

Revision:	23
Committed:	Fri Mar 13 10:26:52 2015 UTC (9 years, 1 month ago) by tony
Content type:	text/x-pascal
File size:	14663 byte(s)
Log Message:	Committing updates for Release R1-2-1
#	User	Rev	Content
1	tony	17	{************************************************************************}
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			{ Associates Ltd 2011 }
31			{ }
32			{************************************************************************}
33
34			unit IBQuery;
35
36			interface
37
38			{$Mode Delphi}
39
40			uses
41			{$IFDEF WINDOWS }
42			Windows,
43			{$ELSE}
44			unix,
45			{$ENDIF}
46			SysUtils, Graphics, Classes, Controls, Db,
47	tony	21	IBHeader, IB, IBCustomDataSet, IBSQL, IBSQLParser;
48	tony	17
49			type
50
51			{ TIBQuery }
52
53	tony	21	TIBQuery = class(TIBParserDataSet)
54	tony	17	private
55			FSQL: TStrings;
56			FPrepared: Boolean;
57			FParams: TParams;
58			FText: string;
59			FRowsAffected: Integer;
60			FCheckRowsAffected: Boolean;
61	tony	21	FSQLUpdating: boolean;
62	tony	17	function GetRowsAffected: Integer;
63			procedure PrepareSQL(Value: PChar);
64			procedure QueryChanged(Sender: TObject);
65			procedure ReadParamData(Reader: TReader);
66			procedure SetQuery(Value: TStrings);
67			procedure SetParamsList(Value: TParams);
68			procedure SetParams;
69			procedure SetParamsFromCursor;
70			procedure SetPrepared(Value: Boolean);
71			procedure SetPrepare(Value: Boolean);
72			procedure WriteParamData(Writer: TWriter);
73			function GetStmtHandle: TISC_STMT_HANDLE;
74
75			protected
76			{ IProviderSupport }
77			(* procedure PSExecute; override;
78			function PSGetParams: TParams; override;
79			function PSGetTableName: string; override;
80			procedure PSSetCommandText(const CommandText: string); override;
81			procedure PSSetParams(AParams: TParams); override; *)
82
83	tony	21	function CreateParser: TSelectSQLParser; override;
84	tony	17	procedure DefineProperties(Filer: TFiler); override;
85			procedure InitFieldDefs; override;
86			procedure InternalOpen; override;
87			procedure Disconnect; override;
88			function GetParamsCount: Word;
89			function GenerateQueryForLiveUpdate : Boolean;
90			procedure SetFiltered(Value: Boolean); override;
91
92			public
93			constructor Create(AOwner: TComponent); override;
94			destructor Destroy; override;
95			procedure BatchInput(InputObject: TIBBatchInput);
96			procedure BatchOutput(OutputObject: TIBBatchOutput);
97			procedure ExecSQL;
98			procedure GetDetailLinkFields(MasterFields, DetailFields: TList);(* override;*)
99			function ParamByName(const Value: string): TParam;
100			procedure Prepare;
101			procedure UnPrepare;
102			property Prepared: Boolean read FPrepared write SetPrepare;
103			property ParamCount: Word read GetParamsCount;
104			property StmtHandle: TISC_STMT_HANDLE read GetStmtHandle;
105			property StatementType;
106			property Text: string read FText;
107			property RowsAffected: Integer read GetRowsAffected;
108			// property Params: TParams read FParams write SetParamsList;
109	tony	21	property BaseSQLSelect;
110	tony	17
111			published
112			property Active;
113	tony	23	property AutoCommit;
114	tony	17	property BufferChunks;
115			property CachedUpdates;
116			property DataSource read GetDataSource write SetDataSource;
117	tony	19	property GenerateParamNames;
118	tony	17	// property Constraints stored ConstraintsStored;
119			property GeneratorField;
120			property ParamCheck;
121			property SQL: TStrings read FSQL write SetQuery;
122	tony	19	property Params: TParams read FParams write SetParamsList;
123	tony	17	property UniDirectional default False;
124			property UpdateObject;
125			property Filtered;
126
127			property BeforeDatabaseDisconnect;
128			property AfterDatabaseDisconnect;
129			property DatabaseFree;
130			property BeforeTransactionEnd;
131			property AfterTransactionEnd;
132			property TransactionFree;
133			property OnFilterRecord;
134			end;
135
136			implementation
137
138			{ TIBQuery }
139
140			constructor TIBQuery.Create(AOwner: TComponent);
141			begin
142			inherited Create(AOwner);
143			FSQL := TStringList.Create;
144			TStringList(SQL).OnChange := QueryChanged;
145			FParams := TParams.Create(Self);
146			ParamCheck := True;
147			FRowsAffected := -1;
148			end;
149
150			destructor TIBQuery.Destroy;
151			begin
152			Destroying;
153			Disconnect;
154			SQL.Free;
155			FParams.Free;
156			inherited Destroy;
157			end;
158
159			procedure TIBQuery.InitFieldDefs;
160			begin
161			inherited InitFieldDefs;
162			end;
163
164			procedure TIBQuery.InternalOpen;
165			begin
166			ActivateConnection();
167			ActivateTransaction;
168	tony	19	QSelect.GenerateParamNames := GenerateParamNames;
169	tony	17	SetPrepared(True);
170			if DataSource <> nil then
171			SetParamsFromCursor;
172			SetParams;
173			inherited InternalOpen;
174			end;
175
176			procedure TIBQuery.Disconnect;
177			begin
178			Close;
179			UnPrepare;
180			end;
181
182			procedure TIBQuery.SetPrepare(Value: Boolean);
183			begin
184			if Value then
185			Prepare
186			else
187			UnPrepare;
188			end;
189
190			procedure TIBQuery.Prepare;
191			begin
192			SetPrepared(True);
193			end;
194
195			procedure TIBQuery.UnPrepare;
196			begin
197			SetPrepared(False);
198			end;
199
200			procedure TIBQuery.SetQuery(Value: TStrings);
201			begin
202			if SQL.Text <> Value.Text then
203			begin
204			Disconnect;
205			SQL.BeginUpdate;
206			try
207			SQL.Assign(Value);
208			finally
209			SQL.EndUpdate;
210			end;
211			end;
212			end;
213
214			procedure TIBQuery.QueryChanged(Sender: TObject);
215			var
216			List: TParams;
217			begin
218			if not (csReading in ComponentState) then
219			begin
220			Disconnect;
221	tony	21	if HasParser and not FSQLUpdating then
222			begin
223			FSQLUpdating := true;
224			try
225			SQL.Text := Parser.SQLText;
226			finally
227			FSQLUpdating := false
228			end;
229			end;
230	tony	17	if ParamCheck or (csDesigning in ComponentState) then
231			begin
232			List := TParams.Create(Self);
233			try
234			FText := List.ParseSQL(SQL.Text, True);
235			List.AssignValues(FParams);
236			FParams.Clear;
237			FParams.Assign(List);
238			finally
239			List.Free;
240			end;
241			end else
242			FText := SQL.Text;
243			DataEvent(dePropertyChange, 0);
244			end else
245			FText := FParams.ParseSQL(SQL.Text, true);
246			SelectSQL.Assign(SQL);
247			end;
248
249			procedure TIBQuery.SetParamsList(Value: TParams);
250			begin
251			FParams.AssignValues(Value);
252			end;
253
254			function TIBQuery.GetParamsCount: Word;
255			begin
256			Result := FParams.Count;
257			end;
258
259			procedure TIBQuery.DefineProperties(Filer: TFiler);
260
261			function WriteData: Boolean;
262			begin
263			{The following results in a stream read error with nested frames. Hence commented out until
264			someone fixes the LCL }
265			{ if Filer.Ancestor <> nil then
266			Result := not FParams.IsEqual(TIBQuery(Filer.Ancestor).FParams) else}
267			Result := FParams.Count > 0;
268			end;
269
270			begin
271			inherited DefineProperties(Filer);
272			Filer.DefineProperty('ParamData', ReadParamData, WriteParamData, WriteData); {do not localize}
273			end;
274
275	tony	21
276	tony	17	procedure TIBQuery.ReadParamData(Reader: TReader);
277			begin
278			FParams.Clear;
279			Reader.ReadValue;
280			Reader.ReadCollection(FParams);
281			end;
282
283			procedure TIBQuery.WriteParamData(Writer: TWriter);
284			begin
285			Writer.WriteCollection(Params);
286			end;
287
288			procedure TIBQuery.SetPrepared(Value: Boolean);
289			begin
290			CheckDatasetClosed;
291			if Value <> Prepared then
292			begin
293			if Value then
294			begin
295			FRowsAffected := -1;
296			FCheckRowsAffected := True;
297			if Length(Text) > 1 then PrepareSQL(PChar(Text))
298			else IBError(ibxeEmptySQLStatement, [nil]);
299			end
300			else
301			begin
302			if FCheckRowsAffected then
303			FRowsAffected := RowsAffected;
304			InternalUnPrepare;
305			end;
306			FPrepared := Value;
307			end;
308			end;
309
310			procedure TIBQuery.SetParamsFromCursor;
311			var
312			I: Integer;
313			DataSet: TDataSet;
314			Field: TField;
315
316			procedure CheckRequiredParams;
317			var
318			I: Integer;
319			begin
320			for I := 0 to FParams.Count - 1 do
321			with FParams[I] do
322			if not Bound then
323			IBError(ibxeRequiredParamNotSet, [nil]);
324			end;
325
326			begin
327			if DataSource <> nil then
328			begin
329			DataSet := DataSource.DataSet;
330			if DataSet <> nil then
331			begin
332			DataSet.FieldDefs.Update;
333			for I := 0 to FParams.Count - 1 do
334			if not FParams[I].Bound then
335			begin
336			Field := DataSet.FindField(FParams[I].Name);
337			if assigned(Field) then
338			begin
339			FParams[I].AssignField(Field);
340			FParams[I].Bound := False;
341			end;
342			end;
343			end
344			else
345			CheckRequiredParams;
346			end
347			else
348			CheckRequiredParams;
349			end;
350
351
352			function TIBQuery.ParamByName(const Value: string): TParam;
353			begin
354			Result := FParams.ParamByName(Value);
355			end;
356
357			procedure TIBQuery.BatchInput(InputObject: TIBBatchInput);
358			begin
359			InternalBatchInput(InputObject);
360			end;
361
362			procedure TIBQuery.BatchOutput(OutputObject: TIBBatchOutput);
363			begin
364			InternalBatchOutput(OutputObject);
365			end;
366
367			procedure TIBQuery.ExecSQL;
368			var
369			DidActivate: Boolean;
370			begin
371			CheckInActive;
372			if SQL.Count <= 0 then
373			begin
374			FCheckRowsAffected := False;
375			IBError(ibxeEmptySQLStatement, [nil]);
376			end;
377			ActivateConnection();
378			DidActivate := ActivateTransaction;
379			try
380			SetPrepared(True);
381			if DataSource <> nil then SetParamsFromCursor;
382			if FParams.Count > 0 then SetParams;
383			InternalExecQuery;
384			finally
385			if DidActivate then
386			DeactivateTransaction;
387			FCheckRowsAffected := True;
388			end;
389			end;
390
391			procedure TIBQuery.SetParams;
392
393			var
394			i : integer;
395			Buffer: Pointer;
396	tony	21	SQLParam: TIBXSQLVAR;
397	tony	17
398			begin
399			for I := 0 to FParams.Count - 1 do
400			begin
401	tony	21	SQLParam := SQLParams.ByName(Params[i].Name);
402	tony	17	if Params[i].IsNull then
403	tony	21	SQLParam.IsNull := True
404	tony	17	else begin
405	tony	21	SQLParam.IsNull := False;
406	tony	17	case Params[i].DataType of
407			ftBytes:
408			begin
409			GetMem(Buffer,Params[i].GetDataSize);
410			try
411			Params[i].GetData(Buffer);
412	tony	21	SQLParam.AsPointer := Buffer;
413	tony	17	finally
414			FreeMem(Buffer);
415			end;
416			end;
417			ftString:
418	tony	21	SQLParam.AsString := Params[i].AsString;
419	tony	23	ftBoolean:
420			SQLParam.AsBoolean := Params[i].AsBoolean;
421			ftSmallint, ftWord:
422	tony	21	SQLParam.AsShort := Params[i].AsSmallInt;
423	tony	17	ftInteger:
424	tony	21	SQLParam.AsLong := Params[i].AsInteger;
425	tony	19	ftLargeInt:
426	tony	21	SQLParam.AsInt64 := Params[i].AsLargeInt;
427	tony	17	ftFloat:
428	tony	21	SQLParam.AsDouble := Params[i].AsFloat;
429	tony	17	ftBCD, ftCurrency:
430	tony	21	SQLParam.AsCurrency := Params[i].AsCurrency;
431	tony	17	ftDate:
432	tony	21	SQLParam.AsDate := Params[i].AsDateTime;
433	tony	17	ftTime:
434	tony	21	SQLParam.AsTime := Params[i].AsDateTime;
435	tony	17	ftDateTime:
436	tony	21	SQLParam.AsDateTime := Params[i].AsDateTime;
437	tony	17	ftBlob, ftMemo:
438	tony	21	SQLParam.AsString := Params[i].AsString;
439	tony	17	else
440			IBError(ibxeNotSupported, [nil]);
441			end;
442			end;
443			end;
444			end;
445
446			procedure TIBQuery.PrepareSQL(Value: PChar);
447			begin
448	tony	19	QSelect.GenerateParamNames := GenerateParamNames;
449	tony	17	InternalPrepare;
450			end;
451
452
453			function TIBQuery.GetRowsAffected: Integer;
454			begin
455			Result := -1;
456			if Prepared then
457			Result := QSelect.RowsAffected
458			end;
459
460
461			procedure TIBQuery.GetDetailLinkFields(MasterFields, DetailFields: TList);
462
463			function AddFieldToList(const FieldName: string; DataSet: TDataSet;
464			List: TList): Boolean;
465			var
466			Field: TField;
467			begin
468			Field := DataSet.FindField(FieldName);
469			if (Field <> nil) then
470			List.Add(Field);
471			Result := Field <> nil;
472			end;
473
474			var
475			i: Integer;
476			begin
477			MasterFields.Clear;
478			DetailFields.Clear;
479			if (DataSource <> nil) and (DataSource.DataSet <> nil) then
480			for i := 0 to Params.Count - 1 do
481			if AddFieldToList(Params[i].Name, DataSource.DataSet, MasterFields) then
482			AddFieldToList(Params[i].Name, Self, DetailFields);
483			end;
484
485			function TIBQuery.GetStmtHandle: TISC_STMT_HANDLE;
486			begin
487			Result := SelectStmtHandle;
488			end;
489
490	tony	21	function TIBQuery.CreateParser: TSelectSQLParser;
491			begin
492			Result := inherited CreateParser;
493			Result.OnSQLChanging := QueryChanged;
494			end;
495
496	tony	17	function TIBQuery.GenerateQueryForLiveUpdate : Boolean;
497			begin
498			Result := False;
499			end;
500
501			procedure TIBQuery.SetFiltered(Value: Boolean);
502			begin
503			if(Filtered <> Value) then
504			begin
505			inherited SetFiltered(value);
506			if Active then
507			begin
508			Close;
509			Open;
510			end;
511			end
512			else
513			inherited SetFiltered(value);
514			end;
515
516			{ TIBQuery IProviderSupport }
517			(*
518			function TIBQuery.PSGetParams: TParams;
519			begin
520			Result := Params;
521			end;
522
523			procedure TIBQuery.PSSetParams(AParams: TParams);
524			begin
525			if AParams.Count <> 0 then
526			Params.Assign(AParams);
527			Close;
528			end;
529
530			function TIBQuery.PSGetTableName: string;
531			begin
532			Result := inherited PSGetTableName;
533			end;
534
535			procedure TIBQuery.PSExecute;
536			begin
537			ExecSQL;
538			end;
539
540			procedure TIBQuery.PSSetCommandText(const CommandText: string);
541			begin
542			if CommandText <> '' then
543			SQL.Text := CommandText;
544			end;
545			*)
546			end.
547	tony	23