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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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unit FBServices;
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{$IFDEF FPC}
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{$mode objfpc}{$H+}
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{$interfaces COM}
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{$ENDIF}
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interface
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uses
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Classes, SysUtils, IB, FBParamBlock, FBActivityMonitor;
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type
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{ TFBServiceManager }
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TFBServiceManager = class(TFBInterfacedObject)
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private
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FFirebirdAPI: IFirebirdAPI;
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FProtocol: TProtocol;
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FServerName: string;
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procedure CheckServerName;
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protected
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FSPB: ISPB;
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procedure InternalAttach(ConnectString: string); virtual; abstract;
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public
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constructor Create(ServerName: string; Protocol: TProtocol; SPB: ISPB);
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destructor Destroy; override;
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public
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{IServiceManager}
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function getSPB: ISPB;
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function getServerName: string;
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procedure Attach;
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procedure Detach(Force: boolean=false); virtual; abstract;
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function AllocateSRB: ISRB;
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function AllocateSQPB: ISQPB;
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function Query(SQPB: ISQPB; Request: ISRB): IServiceQueryResults; virtual; abstract; overload;
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function Query(Request: ISRB): IServiceQueryResults; overload;
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end;
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implementation
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uses FBMessages, FBClientAPI;
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{ TFBServiceManager }
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procedure TFBServiceManager.CheckServerName;
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begin
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if (FServerName = '') and (FProtocol <> Local) then
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IBError(ibxeServerNameMissing, [nil]);
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end;
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constructor TFBServiceManager.Create(ServerName: string; Protocol: TProtocol;
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SPB: ISPB);
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begin
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inherited Create;
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FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
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FProtocol := Protocol;
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FSPB := SPB;
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FServerName := ServerName;
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Attach;
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end;
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destructor TFBServiceManager.Destroy;
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begin
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Detach(true);
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inherited Destroy;
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end;
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function TFBServiceManager.getSPB: ISPB;
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begin
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Result := FSPB;
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end;
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function TFBServiceManager.getServerName: string;
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begin
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Result := FServerName;
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end;
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procedure TFBServiceManager.Attach;
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var ConnectString: String;
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begin
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case FProtocol of
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TCP: ConnectString := FServerName + ':service_mgr'; {do not localize}
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SPX: ConnectString := FServerName + '@service_mgr'; {do not localize}
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NamedPipe: ConnectString := '\\' + FServerName + '\service_mgr'; {do not localize}
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Local: ConnectString := 'service_mgr'; {do not localize}
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end;
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InternalAttach(ConnectString);
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end;
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function TFBServiceManager.AllocateSRB: ISRB;
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begin
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Result := TSRB.Create;
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end;
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function TFBServiceManager.AllocateSQPB: ISQPB;
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begin
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Result := TSQPB.Create;
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end;
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function TFBServiceManager.Query(Request: ISRB): IServiceQueryResults;
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begin
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Result := Query(nil,Request);
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end;
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end.
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