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tony |
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{************************************************************************}
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{ }
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{ Borland Delphi Visual Component Library }
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{ InterBase Express core components }
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{ }
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{ Copyright (c) 1998-2000 Inprise Corporation }
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{ }
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{ InterBase Express is based in part on the product }
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{ Free IB Components, written by Gregory H. Deatz for }
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{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
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{ Free IB Components is used under license. }
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{ }
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{ The contents of this file are subject to the InterBase }
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{ Public License Version 1.0 (the "License"); you may not }
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{ use this file except in compliance with the License. You }
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{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
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{ Software distributed under the License is distributed on }
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{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
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{ express or implied. See the License for the specific language }
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{ governing rights and limitations under the License. }
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{ The Original Code was created by InterBase Software Corporation }
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{ and its successors. }
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{ Portions created by Inprise Corporation are Copyright (C) Inprise }
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{ Corporation. All Rights Reserved. }
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{ Contributor(s): Jeff Overcash }
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{ }
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{ IBX For Lazarus (Firebird Express) }
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{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
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{ Portions created by MWA Software are copyright McCallum Whyman }
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{ Associates Ltd 2011 - 2018 }
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{ }
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{************************************************************************}
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unit IBStoredProc;
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{$Mode Delphi}
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{$codepage UTF8}
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interface
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uses SysUtils, Classes, DB, IB, IBDatabase, IBCustomDataSet,
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IBSQL, IBUtils;
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{ TIBStoredProc }
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type
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TIBStoredProc = class(TIBCustomDataSet)
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private
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FPackageName: string;
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FStmtHandle: IStatement;
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FProcName: string;
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FParams: TParams;
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FPrepared: Boolean;
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FNameList: TStrings;
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FPackageNameList: TStrings;
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function GetPackageNames: TStrings;
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procedure GetPackageNamesFromServer;
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procedure SetPackageName(AValue: string);
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procedure SetParamsList(Value: TParams);
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procedure FreeStatement;
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function GetStoredProcedureNames: TStrings;
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procedure GetStoredProcedureNamesFromServer;
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procedure CreateParamDesc;
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procedure SetParams;
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procedure SetParamsFromCursor;
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procedure GenerateSQL;
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procedure FetchDataIntoOutputParams;
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procedure ReadParamData(Reader: TReader);
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procedure WriteParamData(Writer: TWriter);
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procedure UpdateQuery;
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protected
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procedure DefineProperties(Filer: TFiler); override;
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procedure SetFiltered(Value: Boolean); override;
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tony |
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procedure SetFilterText(const Value: string); override;
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tony |
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procedure InitFieldDefs; override;
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function GetParamsCount: Word;
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procedure SetPrepared(Value: Boolean);
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procedure SetPrepare(Value: Boolean);
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procedure SetProcName(Value: string);
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procedure Disconnect; override;
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procedure InternalOpen; override;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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procedure CopyParams(Value: TParams);
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procedure ExecProc;
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function ParamByName(const Value: string): TParam;
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procedure Prepare;
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procedure UnPrepare;
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property ParamCount: Word read GetParamsCount;
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property StmtHandle: IStatement read FStmtHandle;
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property Prepared: Boolean read FPrepared write SetPrepare;
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property StoredProcedureNames: TStrings read GetStoredProcedureNames;
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property PackageNames: TStrings read GetPackageNames;
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published
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property PackageName: string read FPackageName write SetPackageName;
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property StoredProcName: string read FProcName write SetProcName;
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property Params: TParams read FParams write SetParamsList;
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property Filtered;
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property BeforeDatabaseDisconnect;
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property AfterDatabaseDisconnect;
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property DatabaseFree;
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property BeforeTransactionEnd;
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property AfterTransactionEnd;
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property TransactionFree;
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property OnFilterRecord;
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end;
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implementation
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uses FBMessages;
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{ TIBStoredProc }
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constructor TIBStoredProc.Create(AOwner: TComponent);
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begin
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inherited Create(AOwner);
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FParams := TParams.Create (self);
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FNameList := TStringList.Create;
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FPackageNameList := TStringList.Create;
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end;
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destructor TIBStoredProc.Destroy;
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begin
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Destroying;
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Disconnect;
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if assigned (FParams) then FParams.Free;
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if assigned(FNameList) then FNameList.Free;
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if assigned(FPackageNameList) then FPackageNameList.Free;
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inherited Destroy;
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end;
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procedure TIBStoredProc.Disconnect;
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begin
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Close;
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UnPrepare;
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end;
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procedure TIBStoredProc.ExecProc;
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var
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DidActivate: Boolean;
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begin
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CheckInActive;
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if StoredProcName = '' then
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IBError(ibxeNoStoredProcName, [nil]);
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ActivateConnection;
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DidActivate := ActivateTransaction;
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try
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SetPrepared(True);
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if DataSource <> nil then SetParamsFromCursor;
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if FParams.Count > 0 then SetParams;
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InternalExecQuery;
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FetchDataIntoOutputParams;
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finally
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if DidActivate then
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DeactivateTransaction;
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end;
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end;
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procedure TIBStoredProc.SetProcName(Value: string);
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begin
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if Value = FProcName then Exit;
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CheckInactive;
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FProcName := Value;
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UpdateQuery;
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end;
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function TIBStoredProc.GetParamsCount: Word;
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begin
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Result := FParams.Count;
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end;
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procedure TIBStoredProc.SetFiltered(Value: Boolean);
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begin
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if(Filtered <> Value) then
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begin
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inherited SetFiltered(value);
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if Active then
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begin
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Close;
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Open;
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end;
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end
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else
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inherited SetFiltered(value);
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end;
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tony |
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procedure TIBStoredProc.SetFilterText(const Value: string);
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begin
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IBError(ibxeIsAExecuteProcedure,[nil]);
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end;
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tony |
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procedure TIBStoredProc.InitFieldDefs;
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begin
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if (SelectSQL.Text = '') and (FProcName <> '') and (Database <> nil) then
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GenerateSQL;
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inherited InitFieldDefs;
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end;
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procedure TIBStoredProc.GenerateSQL;
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var Params: TStringList;
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function FormatParameter(Dialect: Integer; Value: String): String;
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var j: integer;
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begin
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Value := Trim(Value);
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if Dialect = 1 then
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Result := AnsiUpperCase(Value)
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else
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begin
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j := 1;
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Value := Space2Underscore(AnsiUpperCase(Value));
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Result := Value;
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while Params.IndexOf(Result) <> -1 do
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begin
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Result := Value + IntToStr(j);
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Inc(j)
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end;
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Params.Add(Result)
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end;
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end;
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{Trim and make uppercase unless not an SQL Identifier when leave as it is}
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function FormatProcName(Dialect: Integer; Value: String): String;
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begin
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Value := Trim(Value);
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if (Dialect = 1) or IsSQLIdentifier(Value) then
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Result := AnsiUpperCase(Value)
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else
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Result := SQLSafeString(Value);
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end;
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var
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Query : TIBSQL;
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input : string;
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begin
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input := '';
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if FProcName = '' then
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IBError(ibxeNoStoredProcName,[nil]);
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ActivateConnection;
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Database.InternalTransaction.StartTransaction;
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Params := TStringList.Create;
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Query := TIBSQL.Create(self);
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try
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Query.Database := DataBase;
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Query.Transaction := Database.InternalTransaction;
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if DatabaseInfo.ODSMajorVersion < 12 then
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Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME, RDB$PARAMETER_TYPE ' + {do not localize}
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'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
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'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
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'''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
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' ORDER BY RDB$PARAMETER_NUMBER' {do not localize}
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else
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if FPackageName = '' then
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Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME, RDB$PARAMETER_TYPE ' + {do not localize}
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'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
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'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
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'''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
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'AND RDB$PACKAGE_NAME IS NULL' + {do not localize}
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' ORDER BY RDB$PARAMETER_NUMBER' {do not localize}
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else
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Query.SQL.Text := 'SELECT RDB$PARAMETER_NAME, RDB$PARAMETER_TYPE ' + {do not localize}
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'FROM RDB$PROCEDURE_PARAMETERS ' + {do not localize}
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'WHERE RDB$PROCEDURE_NAME = ' + {do not localize}
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'''' + FormatProcName(Database.SQLDialect, FProcName) + '''' +
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'AND RDB$PACKAGE_NAME = ' + {do not localize}
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'''' + FormatProcName(Database.SQLDialect, FPackageName) + '''' +
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' ORDER BY RDB$PARAMETER_NUMBER'; {do not localize}
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Query.Prepare;
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Query.GoToFirstRecordOnExecute := False;
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Query.ExecQuery;
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while (not Query.EOF) and Query.Next do begin
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if (Query.FieldByName('RDB$PARAMETER_TYPE').AsInteger = 0) then begin {do not localize}
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if (input <> '') then
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input := input + ', :' +
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FormatParameter(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString) else {do not localize}
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input := ':' +
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FormatParameter(Database.SQLDialect, Query.Current.ByName('RDB$PARAMETER_NAME').AsString); {do not localize}
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end
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end;
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if FPackageName = '' then
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SelectSQL.Text := 'Execute Procedure ' + {do not localize}
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QuoteIdentifierIfNeeded(Database.SQLDialect, FProcName) + ' ' + input
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else
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SelectSQL.Text := 'Execute Procedure ' + {do not localize}
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QuoteIdentifierIfNeeded(Database.SQLDialect,FPackageName) + '.' +
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QuoteIdentifierIfNeeded(Database.SQLDialect, FProcName) + ' ' + input;
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// writeln(SelectSQL.Text);
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finally
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296 |
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Query.Free;
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297 |
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Params.Free;
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298 |
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Database.InternalTransaction.Commit;
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end;
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end;
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302 |
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procedure TIBStoredProc.CreateParamDesc;
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var
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i : integer;
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DataType : TFieldType;
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306 |
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begin
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307 |
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DataType := ftUnknown;
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308 |
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for i := 0 to QSelect.MetaData.Count - 1 do begin
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case QSelect.MetaData[i].SQLtype of
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SQL_TYPE_DATE: DataType := ftDate;
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SQL_TYPE_TIME: DataType := ftTime;
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SQL_TIMESTAMP: DataType := ftDateTime;
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SQL_SHORT:
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if QSelect.MetaData[i].getScale = 0 then
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DataType := ftSmallInt
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else
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317 |
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DataType := ftBCD;
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318 |
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SQL_LONG:
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if QSelect.MetaData[i].getScale = 0 then
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DataType := ftInteger
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321 |
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else if QSelect.MetaData[i].getScale >= -4 then
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DataType := ftBCD
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else
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324 |
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DataType := ftFloat;
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325 |
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SQL_INT64:
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326 |
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if QSelect.MetaData[i].getScale = 0 then
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327 |
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DataType := ftLargeInt
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328 |
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else if QSelect.MetaData[i].getScale >= -4 then
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329 |
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DataType := ftBCD
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330 |
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else
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331 |
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DataType := ftFloat;
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332 |
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SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
|
333 |
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SQL_BOOLEAN:
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334 |
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DataType := ftBoolean;
|
335 |
|
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SQL_TEXT: DataType := ftString;
|
336 |
|
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SQL_VARYING:
|
337 |
|
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if QSelect.MetaData[i].GetSize < 1024 then
|
338 |
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DataType := ftString
|
339 |
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else DataType := ftBlob;
|
340 |
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SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
|
341 |
|
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end;
|
342 |
|
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FParams.CreateParam(DataType, Trim(QSelect.MetaData[i].Name), ptOutput);
|
343 |
|
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end;
|
344 |
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345 |
|
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DataType := ftUnknown;
|
346 |
|
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for i := 0 to QSelect.Params.Count - 1 do begin
|
347 |
|
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case QSelect.Params[i].GetSQLtype of
|
348 |
|
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SQL_TYPE_DATE: DataType := ftDate;
|
349 |
|
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SQL_TYPE_TIME: DataType := ftTime;
|
350 |
|
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SQL_TIMESTAMP: DataType := ftDateTime;
|
351 |
|
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SQL_SHORT:
|
352 |
|
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if QSelect.Params[i].getScale = 0 then
|
353 |
|
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DataType := ftSmallInt
|
354 |
|
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else
|
355 |
|
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DataType := ftBCD;
|
356 |
|
|
SQL_LONG:
|
357 |
|
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if QSelect.Params[i].getScale = 0 then
|
358 |
|
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DataType := ftInteger
|
359 |
|
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else if QSelect.Params[i].getScale >= -4 then
|
360 |
|
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DataType := ftBCD
|
361 |
|
|
else DataType := ftFloat;
|
362 |
|
|
SQL_INT64:
|
363 |
|
|
if QSelect.Params[i].getScale = 0 then
|
364 |
|
|
DataType := ftLargeInt
|
365 |
|
|
else if QSelect.Params[i].getScale >= -4 then
|
366 |
|
|
DataType := ftBCD
|
367 |
|
|
else DataType := ftFloat;
|
368 |
|
|
SQL_DOUBLE, SQL_FLOAT, SQL_D_FLOAT: DataType := ftFloat;
|
369 |
|
|
SQL_BOOLEAN:
|
370 |
|
|
DataType := ftBoolean;
|
371 |
|
|
SQL_TEXT: DataType := ftString;
|
372 |
|
|
SQL_VARYING:
|
373 |
|
|
if QSelect.Params[i].GetSize < 1024 then
|
374 |
|
|
DataType := ftString
|
375 |
|
|
else DataType := ftBlob;
|
376 |
|
|
SQL_BLOB, SQL_ARRAY, SQL_QUAD: DataType := ftBlob;
|
377 |
|
|
end;
|
378 |
|
|
FParams.CreateParam(DataType, Trim(QSelect.Params[i].Name), ptInput);
|
379 |
|
|
end;
|
380 |
|
|
end;
|
381 |
|
|
|
382 |
|
|
procedure TIBStoredProc.SetPrepared(Value: Boolean);
|
383 |
|
|
begin
|
384 |
|
|
if Prepared <> Value then
|
385 |
|
|
begin
|
386 |
|
|
if Value then
|
387 |
|
|
try
|
388 |
|
|
if SelectSQL.Text = '' then GenerateSQL;
|
389 |
|
|
InternalPrepare;
|
390 |
|
|
if FParams.Count = 0 then CreateParamDesc;
|
391 |
|
|
FPrepared := True;
|
392 |
|
|
except
|
393 |
|
|
FreeStatement;
|
394 |
|
|
raise;
|
395 |
|
|
end
|
396 |
|
|
else FreeStatement;
|
397 |
|
|
end;
|
398 |
|
|
|
399 |
|
|
end;
|
400 |
|
|
|
401 |
|
|
procedure TIBStoredProc.Prepare;
|
402 |
|
|
begin
|
403 |
|
|
SetPrepared(True);
|
404 |
|
|
end;
|
405 |
|
|
|
406 |
|
|
procedure TIBStoredProc.UnPrepare;
|
407 |
|
|
begin
|
408 |
|
|
SetPrepared(False);
|
409 |
|
|
end;
|
410 |
|
|
|
411 |
|
|
procedure TIBStoredProc.FreeStatement;
|
412 |
|
|
begin
|
413 |
|
|
InternalUnPrepare;
|
414 |
|
|
FPrepared := False;
|
415 |
|
|
end;
|
416 |
|
|
|
417 |
|
|
procedure TIBStoredProc.SetPrepare(Value: Boolean);
|
418 |
|
|
begin
|
419 |
|
|
if Value then Prepare
|
420 |
|
|
else UnPrepare;
|
421 |
|
|
end;
|
422 |
|
|
|
423 |
|
|
procedure TIBStoredProc.CopyParams(Value: TParams);
|
424 |
|
|
begin
|
425 |
|
|
if not Prepared and (FParams.Count = 0) then
|
426 |
|
|
try
|
427 |
|
|
Prepare;
|
428 |
|
|
Value.Assign(FParams);
|
429 |
|
|
finally
|
430 |
|
|
UnPrepare;
|
431 |
|
|
end else
|
432 |
|
|
Value.Assign(FParams);
|
433 |
|
|
end;
|
434 |
|
|
|
435 |
|
|
procedure TIBStoredProc.SetParamsList(Value: TParams);
|
436 |
|
|
begin
|
437 |
|
|
CheckInactive;
|
438 |
|
|
if Prepared then
|
439 |
|
|
begin
|
440 |
|
|
SetPrepared(False);
|
441 |
|
|
FParams.Assign(Value);
|
442 |
|
|
SetPrepared(True);
|
443 |
|
|
end else
|
444 |
|
|
FParams.Assign(Value);
|
445 |
|
|
end;
|
446 |
|
|
|
447 |
|
|
procedure TIBStoredProc.SetPackageName(AValue: string);
|
448 |
|
|
begin
|
449 |
|
|
if FPackageName = AValue then Exit;
|
450 |
|
|
CheckInactive;
|
451 |
|
|
FPackageName := AValue;
|
452 |
|
|
FProcName := '';
|
453 |
|
|
UpdateQuery;
|
454 |
|
|
end;
|
455 |
|
|
|
456 |
|
|
procedure TIBStoredProc.GetPackageNamesFromServer;
|
457 |
|
|
var
|
458 |
|
|
Query : TIBSQL;
|
459 |
|
|
begin
|
460 |
|
|
ActivateConnection;
|
461 |
|
|
if (csReading in ComponentState) or (DatabaseInfo.ODSMajorVersion < 12) then Exit;
|
462 |
|
|
Database.InternalTransaction.StartTransaction;
|
463 |
|
|
Query := TIBSQL.Create(self);
|
464 |
|
|
try
|
465 |
|
|
Query.GoToFirstRecordOnExecute := False;
|
466 |
|
|
Query.Database := DataBase;
|
467 |
|
|
Query.Transaction := Database.InternalTransaction;
|
468 |
|
|
Query.SQL.Text := 'Select distinct RDB$PACKAGE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME is not null'; {do not localize}
|
469 |
|
|
Query.Prepare;
|
470 |
|
|
Query.ExecQuery;
|
471 |
|
|
while (not Query.EOF) and Query.Next do
|
472 |
|
|
FPackageNameList.Add(TrimRight(Query.Current.ByName('RDB$PACKAGE_NAME').AsString)); {do not localize}
|
473 |
|
|
finally
|
474 |
|
|
Query.Free;
|
475 |
|
|
Database.InternalTransaction.Commit;
|
476 |
|
|
end;
|
477 |
|
|
end;
|
478 |
|
|
|
479 |
|
|
function TIBStoredProc.GetPackageNames: TStrings;
|
480 |
|
|
begin
|
481 |
|
|
FPackageNameList.Clear;
|
482 |
|
|
GetPackageNamesFromServer;
|
483 |
|
|
Result := FPackageNameList;
|
484 |
|
|
end;
|
485 |
|
|
|
486 |
|
|
function TIBStoredProc.ParamByName(const Value: string): TParam;
|
487 |
|
|
begin
|
488 |
|
|
Prepare;
|
489 |
|
|
Result := FParams.ParamByName(Value);
|
490 |
|
|
end;
|
491 |
|
|
|
492 |
|
|
function TIBStoredProc.GetStoredProcedureNames: TStrings;
|
493 |
|
|
begin
|
494 |
|
|
FNameList.clear;
|
495 |
|
|
GetStoredProcedureNamesFromServer;
|
496 |
|
|
Result := FNameList;
|
497 |
|
|
end;
|
498 |
|
|
|
499 |
|
|
procedure TIBStoredProc.GetStoredProcedureNamesFromServer;
|
500 |
|
|
var
|
501 |
|
|
Query : TIBSQL;
|
502 |
|
|
begin
|
503 |
|
|
if not (csReading in ComponentState) then begin
|
504 |
|
|
ActivateConnection;
|
505 |
|
|
Database.InternalTransaction.StartTransaction;
|
506 |
|
|
Query := TIBSQL.Create(self);
|
507 |
|
|
try
|
508 |
|
|
Query.GoToFirstRecordOnExecute := False;
|
509 |
|
|
Query.Database := DataBase;
|
510 |
|
|
Query.Transaction := Database.InternalTransaction;
|
511 |
|
|
if DatabaseInfo.ODSMajorVersion < 12 then
|
512 |
|
|
Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES' {do not localize}
|
513 |
|
|
else
|
514 |
|
|
if FPackageName = '' then
|
515 |
|
|
Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME is NULL' {do not localize}
|
516 |
|
|
else
|
517 |
|
|
Query.SQL.Text := 'Select RDB$PROCEDURE_NAME from RDB$PROCEDURES Where RDB$PACKAGE_NAME = ''' + {do not localize}
|
518 |
|
|
SQLSafeString(FPackageName) + '''';
|
519 |
|
|
Query.Prepare;
|
520 |
|
|
Query.ExecQuery;
|
521 |
|
|
while (not Query.EOF) and Query.Next do
|
522 |
|
|
FNameList.Add(TrimRight(Query.Current.ByName('RDB$PROCEDURE_NAME').AsString)); {do not localize}
|
523 |
|
|
finally
|
524 |
|
|
Query.Free;
|
525 |
|
|
Database.InternalTransaction.Commit;
|
526 |
|
|
end;
|
527 |
|
|
end;
|
528 |
|
|
end;
|
529 |
|
|
|
530 |
|
|
procedure TIBStoredProc.SetParams;
|
531 |
|
|
var
|
532 |
|
|
i : integer;
|
533 |
|
|
j: integer;
|
534 |
|
|
begin
|
535 |
|
|
i := 0;
|
536 |
|
|
for j := 0 to FParams.Count - 1 do
|
537 |
|
|
begin
|
538 |
|
|
if (Params[j].ParamType <> ptInput) then
|
539 |
|
|
continue;
|
540 |
|
|
if not Params[j].Bound then
|
541 |
|
|
IBError(ibxeRequiredParamNotSet, [Params[j].Name]);
|
542 |
|
|
if Params[j].IsNull then
|
543 |
|
|
SQLParams[i].IsNull := True
|
544 |
|
|
else begin
|
545 |
|
|
SQLParams[i].IsNull := False;
|
546 |
|
|
case Params[j].DataType of
|
547 |
|
|
ftString:
|
548 |
|
|
SQLParams[i].AsString := Params[j].AsString;
|
549 |
|
|
ftSmallint, ftWord:
|
550 |
|
|
SQLParams[i].AsShort := Params[j].AsSmallInt;
|
551 |
|
|
ftBoolean:
|
552 |
|
|
SQLParams[i].AsBoolean := Params[j].AsBoolean;
|
553 |
|
|
ftInteger:
|
554 |
|
|
SQLParams[i].AsLong := Params[j].AsInteger;
|
555 |
|
|
ftLargeInt:
|
556 |
|
|
SQLParams[i].AsInt64 := Params[j].AsLargeInt;
|
557 |
|
|
ftFloat, ftCurrency:
|
558 |
|
|
SQLParams[i].AsDouble := Params[j].AsFloat;
|
559 |
|
|
ftBCD:
|
560 |
|
|
SQLParams[i].AsCurrency := Params[j].AsCurrency;
|
561 |
|
|
ftDate:
|
562 |
|
|
SQLParams[i].AsDate := Params[j].AsDateTime;
|
563 |
|
|
ftTime:
|
564 |
|
|
SQLParams[i].AsTime := Params[j].AsDateTime;
|
565 |
|
|
ftDateTime:
|
566 |
|
|
SQLParams[i].AsDateTime := Params[j].AsDateTime;
|
567 |
|
|
ftBlob, ftMemo:
|
568 |
|
|
SQLParams[i].AsString := Params[j].AsString;
|
569 |
|
|
else
|
570 |
|
|
IBError(ibxeNotSupported, [nil]);
|
571 |
|
|
end;
|
572 |
|
|
end;
|
573 |
|
|
Inc(i);
|
574 |
|
|
end;
|
575 |
|
|
end;
|
576 |
|
|
|
577 |
|
|
procedure TIBStoredProc.SetParamsFromCursor;
|
578 |
|
|
var
|
579 |
|
|
I: Integer;
|
580 |
|
|
DataSet: TDataSet;
|
581 |
|
|
begin
|
582 |
|
|
if DataSource <> nil then
|
583 |
|
|
begin
|
584 |
|
|
DataSet := DataSource.DataSet;
|
585 |
|
|
if DataSet <> nil then
|
586 |
|
|
begin
|
587 |
|
|
DataSet.FieldDefs.Update;
|
588 |
|
|
for I := 0 to FParams.Count - 1 do
|
589 |
|
|
with FParams[I] do
|
590 |
|
|
if (not Bound) and
|
591 |
|
|
((ParamType = ptInput) or (ParamType = ptInputOutput)) then
|
592 |
|
|
AssignField(DataSet.FieldByName(Name));
|
593 |
|
|
end;
|
594 |
|
|
end;
|
595 |
|
|
end;
|
596 |
|
|
|
597 |
|
|
procedure TIBStoredProc.FetchDataIntoOutputParams;
|
598 |
|
|
var
|
599 |
|
|
i,j : Integer;
|
600 |
|
|
begin
|
601 |
|
|
j := 0;
|
602 |
|
|
for i := 0 to FParams.Count - 1 do
|
603 |
|
|
with Params[I] do
|
604 |
|
|
if ParamType = ptOutput then begin
|
605 |
|
|
Value := QSelect.Fields[j].Value;
|
606 |
|
|
Inc(j);
|
607 |
|
|
end;
|
608 |
|
|
end;
|
609 |
|
|
|
610 |
|
|
procedure TIBStoredProc.InternalOpen;
|
611 |
|
|
begin
|
612 |
|
|
IBError(ibxeIsAExecuteProcedure,[nil]);
|
613 |
|
|
end;
|
614 |
|
|
|
615 |
|
|
procedure TIBStoredProc.DefineProperties(Filer: TFiler);
|
616 |
|
|
|
617 |
|
|
function WriteData: Boolean;
|
618 |
|
|
begin
|
619 |
|
|
if Filer.Ancestor <> nil then
|
620 |
|
|
Result := not FParams.IsEqual(TIBStoredProc(Filer.Ancestor).FParams) else
|
621 |
|
|
Result := FParams.Count > 0;
|
622 |
|
|
end;
|
623 |
|
|
|
624 |
|
|
begin
|
625 |
|
|
inherited DefineProperties(Filer);
|
626 |
|
|
Filer.DefineProperty('ParamData', ReadParamData, WriteParamData, WriteData); {do not localize}
|
627 |
|
|
end;
|
628 |
|
|
|
629 |
|
|
procedure TIBStoredProc.WriteParamData(Writer: TWriter);
|
630 |
|
|
begin
|
631 |
|
|
Writer.WriteCollection(Params);
|
632 |
|
|
end;
|
633 |
|
|
|
634 |
|
|
procedure TIBStoredProc.UpdateQuery;
|
635 |
|
|
begin
|
636 |
|
|
if not (csReading in ComponentState) then
|
637 |
|
|
begin
|
638 |
|
|
FreeStatement;
|
639 |
|
|
FParams.Clear;
|
640 |
|
|
if (FProcName <> '') and (Database <> nil) then
|
641 |
|
|
begin
|
642 |
|
|
GenerateSQL;
|
643 |
|
|
if csDesigning in ComponentState then
|
644 |
|
|
begin
|
645 |
|
|
Prepare; {Fills the Params collection}
|
646 |
|
|
UnPrepare;
|
647 |
|
|
end;
|
648 |
|
|
end;
|
649 |
|
|
end
|
650 |
|
|
else
|
651 |
|
|
begin
|
652 |
|
|
if (FProcName <> '') and (Database <> nil) then
|
653 |
|
|
GenerateSQL;
|
654 |
|
|
end;
|
655 |
|
|
end;
|
656 |
|
|
|
657 |
|
|
procedure TIBStoredProc.ReadParamData(Reader: TReader);
|
658 |
|
|
begin
|
659 |
|
|
Reader.ReadValue;
|
660 |
|
|
Reader.ReadCollection(Params);
|
661 |
|
|
end;
|
662 |
|
|
|
663 |
|
|
end.
|