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tony |
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(*
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* Firebird Interface (fbintf). The fbintf components provide a set of
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* Pascal language bindings for the Firebird API. Although predominantly
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* a new development they include source code taken from IBX and may be
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* considered a derived product. This software thus also includes the copyright
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* notice and license conditions from IBX.
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*
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* Except for those parts dervied from IBX, contents of this file are subject
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* to the Initial Developer's Public License Version 1.0 (the "License"); you
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* may not use this file except in compliance with the License. You may obtain a
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* copy of the License here:
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*
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* http://www.firebirdsql.org/index.php?op=doc&id=idpl
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*
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* Software distributed under the License is distributed on an "AS
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* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
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* implied. See the License for the specific language governing rights
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* and limitations under the License.
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*
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* The Initial Developer of the Original Code is Tony Whyman.
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*
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* The Original Code is (C) 2016 Tony Whyman, MWA Software
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* (http://www.mwasoftware.co.uk).
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*
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* All Rights Reserved.
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*
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* Contributor(s): ______________________________________.
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*
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*)
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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 - 2015 }
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{ }
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{************************************************************************}
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unit FB25Services;
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tony |
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{$IFDEF MSWINDOWS}
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{$DEFINE WINDOWS}
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{$ENDIF}
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tony |
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{$IFDEF FPC}
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tony |
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{$mode delphi}
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tony |
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{$interfaces COM}
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{$ENDIF}
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interface
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uses
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Classes, SysUtils, IB, FB25ClientAPI, IBHeader, FBParamBlock, FBOutputBlock,
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FBServices;
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type
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{ TFBServiceManager }
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tony |
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{ TFB25ServiceManager }
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TFB25ServiceManager = class(TFBServiceManager,IServiceManager)
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private
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FHandle: TISC_SVC_HANDLE;
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procedure CheckActive;
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procedure CheckInactive;
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protected
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tony |
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procedure InternalAttach(ConnectString: AnsiString); override;
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public
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property Handle: TISC_SVC_HANDLE read FHandle;
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public
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{IServiceManager}
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procedure Detach(Force: boolean=false); override;
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function IsAttached: boolean;
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function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
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function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true): IServiceQueryResults; override;
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end;
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implementation
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uses FBMessages;
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{ TFBServiceManager }
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procedure TFB25ServiceManager.CheckActive;
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begin
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if FHandle = nil then
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IBError(ibxeServiceActive, [nil]);
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end;
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procedure TFB25ServiceManager.CheckInactive;
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begin
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if FHandle <> nil then
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IBError(ibxeServiceInActive, [nil]);
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end;
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procedure TFB25ServiceManager.InternalAttach(ConnectString: AnsiString);
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begin
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with Firebird25ClientAPI do
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if FSPB = nil then
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begin
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if isc_service_attach(StatusVector, Length(ConnectString),
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PAnsiChar(ConnectString), @FHandle, 0, nil) > 0 then
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IBDataBaseError;
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end
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else
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begin
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if isc_service_attach(StatusVector, Length(ConnectString),
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PAnsiChar(ConnectString), @FHandle,
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tony |
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(FSPB as TSPB).getDataLength,
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(FSPB as TSPB).getBuffer) > 0 then
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IBDataBaseError;
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end;
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end;
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procedure TFB25ServiceManager.Detach(Force: boolean);
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begin
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if FHandle = nil then
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Exit;
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with Firebird25ClientAPI do
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if isc_service_detach(StatusVector, @FHandle) > 0 then
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begin
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FHandle := nil;
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if not Force then
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IBDataBaseError;
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end
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else
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FHandle := nil;
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end;
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function TFB25ServiceManager.IsAttached: boolean;
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begin
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Result := FHandle <> nil;
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end;
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tony |
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function TFB25ServiceManager.Start(Request: ISRB; RaiseExceptionOnError: boolean
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): boolean;
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tony |
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begin
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Result := true;
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CheckActive;
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with Firebird25ClientAPI do
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begin
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Result := isc_service_start(StatusVector, @FHandle, nil,
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(Request as TSRB).getDataLength,
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(Request as TSRB).getBuffer) = 0;
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if not Result and RaiseExceptionOnError then
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IBDataBaseError;
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end;
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end;
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function TFB25ServiceManager.Query(SQPB: ISQPB; Request: ISRB;
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RaiseExceptionOnError: boolean): IServiceQueryResults;
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tony |
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var QueryResults: TServiceQueryResults;
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begin
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CheckActive;
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QueryResults := TServiceQueryResults.Create;
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Result := QueryResults;
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with Firebird25ClientAPI do
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if SQPB = nil then
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begin
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if isc_service_query(StatusVector, @FHandle, nil,0,nil,
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(Request as TSRB).getDataLength,
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(Request as TSRB).getBuffer,
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QueryResults.getBufSize,
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QueryResults.Buffer) > 0 then
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begin
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if RaiseExceptionOnError then
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IBDataBaseError
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else
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Result := nil;
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end;
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tony |
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end
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else
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if isc_service_query(StatusVector, @FHandle, nil,
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(SQPB as TSQPB).getDataLength,
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(SQPB as TSQPB).getBuffer,
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(Request as TSRB).getDataLength,
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(Request as TSRB).getBuffer,
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QueryResults.getBufSize,
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QueryResults.Buffer) > 0 then
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tony |
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begin
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if RaiseExceptionOnError then
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IBDataBaseError
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else
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Result := nil;
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end;
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tony |
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end;
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end.
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