client/2.5/FB25Services.pas

(*
 *  Firebird Interface (fbintf). The fbintf components provide a set of
 *  Pascal language bindings for the Firebird API. Although predominantly
 *  a new development they include source code taken from IBX and may be
 *  considered a derived product. This software thus also includes the copyright
 *  notice and license conditions from IBX.
 *
 *  Except for those parts dervied from IBX, contents of this file are subject
 *  to the Initial Developer's 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 here:
 *
 *    http://www.firebirdsql.org/index.php?op=doc&id=idpl
 *
 *  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 Initial Developer of the Original Code is Tony Whyman.
 *
 *  The Original Code is (C) 2016 Tony Whyman, MWA Software
 *  (http://www.mwasoftware.co.uk).
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): ______________________________________.
 *
*)
{************************************************************************}
{                                                                        }
{       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 - 2015                                                }
{                                                                        }
{************************************************************************}
unit FB25Services;
{$IFDEF MSWINDOWS} 
{$DEFINE WINDOWS} 
{$ENDIF}

{$IFDEF FPC}
{$mode delphi}
{$interfaces COM}
{$ENDIF}

interface

uses
  Classes, SysUtils, IB, FB25ClientAPI, IBHeader, FBParamBlock, FBOutputBlock,
    FBServices;

type
  { TFBServiceManager }

  TFB25ServiceManager = class(TFBServiceManager,IServiceManager)
  private
    FHandle: TISC_SVC_HANDLE;
    procedure CheckActive;
    procedure CheckInactive;
  protected
    procedure InternalAttach(ConnectString: AnsiString); override;
  public
    property Handle: TISC_SVC_HANDLE read FHandle;

  public
    {IServiceManager}
    procedure Detach(Force: boolean=false); override;
    function IsAttached: boolean;
    procedure Start(Request: ISRB);
    function Query(SQPB: ISQPB; Request: ISRB): IServiceQueryResults; override;
  end;

implementation

uses FBMessages;

{ TFBServiceManager }

procedure TFB25ServiceManager.CheckActive;
begin
  if FHandle = nil then
    IBError(ibxeServiceActive, [nil]);
end;

procedure TFB25ServiceManager.CheckInactive;
begin
  if FHandle <> nil then
    IBError(ibxeServiceInActive, [nil]);
end;

procedure TFB25ServiceManager.InternalAttach(ConnectString: AnsiString);
begin
  with Firebird25ClientAPI do
  if FSPB = nil then
  begin
    if isc_service_attach(StatusVector, Length(ConnectString),
                         PAnsiChar(ConnectString), @FHandle, 0, nil) > 0 then
      IBDataBaseError;
  end
  else
  begin
    if isc_service_attach(StatusVector, Length(ConnectString),
                           PAnsiChar(ConnectString), @FHandle,
                           (FSPB as TSPB).getDataLength,
                           (FSPB as TSPB).getBuffer) > 0 then
      IBDataBaseError;
  end;
end;

procedure TFB25ServiceManager.Detach(Force: boolean);
begin
  if FHandle = nil then
    Exit;
  with Firebird25ClientAPI do
  if isc_service_detach(StatusVector, @FHandle) > 0 then
  begin
    FHandle := nil;
    if not Force then
     IBDataBaseError;
  end
  else
    FHandle := nil;
end;

function TFB25ServiceManager.IsAttached: boolean;
begin
  Result := FHandle <> nil;
end;

procedure TFB25ServiceManager.Start(Request: ISRB);
begin
  CheckActive;
  with Firebird25ClientAPI do
    if isc_service_start(StatusVector, @FHandle, nil,
                           (Request as TSRB).getDataLength,
                           (Request as TSRB).getBuffer) > 0 then
        IBDataBaseError;
end;

function TFB25ServiceManager.Query(SQPB: ISQPB; Request: ISRB
  ): IServiceQueryResults;
var QueryResults: TServiceQueryResults;
begin
  CheckActive;
  QueryResults := TServiceQueryResults.Create;
  Result := QueryResults;
  with Firebird25ClientAPI do
    if SQPB = nil then
    begin
      if isc_service_query(StatusVector, @FHandle, nil,0,nil,
                         (Request as TSRB).getDataLength,
                         (Request as TSRB).getBuffer,
                         QueryResults.getBufSize,
                         QueryResults.Buffer) > 0 then
        IBDataBaseError;
    end
    else
    if isc_service_query(StatusVector, @FHandle, nil,
                       (SQPB as TSQPB).getDataLength,
                       (SQPB as TSQPB).getBuffer,
                       (Request as TSRB).getDataLength,
                       (Request as TSRB).getBuffer,
                       QueryResults.getBufSize,
                       QueryResults.Buffer) > 0 then
      IBDataBaseError;

end;

end.

Revision:	56
Committed:	Mon Mar 6 10:20:02 2017 UTC (7 years, 8 months ago) by tony
Content type:	text/x-pascal
Original Path:	*ibx/trunk/fbintf/client/2.5/FB25Services.pas*
File size:	7011 byte(s)
Log Message:	Committing updates for Trunk
#	User	Rev	Content
1	tony	45	(*
2			* Firebird Interface (fbintf). The fbintf components provide a set of
3			* Pascal language bindings for the Firebird API. Although predominantly
4			* a new development they include source code taken from IBX and may be
5			* considered a derived product. This software thus also includes the copyright
6			* notice and license conditions from IBX.
7			*
8			* Except for those parts dervied from IBX, contents of this file are subject
9			* to the Initial Developer's Public License Version 1.0 (the "License"); you
10			* may not use this file except in compliance with the License. You may obtain a
11			* copy of the License here:
12			*
13			* http://www.firebirdsql.org/index.php?op=doc&id=idpl
14			*
15			* Software distributed under the License is distributed on an "AS
16			* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
17			* implied. See the License for the specific language governing rights
18			* and limitations under the License.
19			*
20			* The Initial Developer of the Original Code is Tony Whyman.
21			*
22			* The Original Code is (C) 2016 Tony Whyman, MWA Software
23			* (http://www.mwasoftware.co.uk).
24			*
25			* All Rights Reserved.
26			*
27			* Contributor(s): ______________________________________.
28			*
29			*)
30			{************************************************************************}
31			{ }
32			{ Borland Delphi Visual Component Library }
33			{ InterBase Express core components }
34			{ }
35			{ Copyright (c) 1998-2000 Inprise Corporation }
36			{ }
37			{ InterBase Express is based in part on the product }
38			{ Free IB Components, written by Gregory H. Deatz for }
39			{ Hoagland, Longo, Moran, Dunst & Doukas Company. }
40			{ Free IB Components is used under license. }
41			{ }
42			{ The contents of this file are subject to the InterBase }
43			{ Public License Version 1.0 (the "License"); you may not }
44			{ use this file except in compliance with the License. You }
45			{ may obtain a copy of the License at http://www.Inprise.com/IPL.html }
46			{ Software distributed under the License is distributed on }
47			{ an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either }
48			{ express or implied. See the License for the specific language }
49			{ governing rights and limitations under the License. }
50			{ The Original Code was created by InterBase Software Corporation }
51			{ and its successors. }
52			{ Portions created by Inprise Corporation are Copyright (C) Inprise }
53			{ Corporation. All Rights Reserved. }
54			{ Contributor(s): Jeff Overcash }
55			{ }
56			{ IBX For Lazarus (Firebird Express) }
57			{ Contributor: Tony Whyman, MWA Software http://www.mwasoftware.co.uk }
58			{ Portions created by MWA Software are copyright McCallum Whyman }
59			{ Associates Ltd 2011 - 2015 }
60			{ }
61			{************************************************************************}
62			unit FB25Services;
63	tony	56	{$IFDEF MSWINDOWS}
64			{$DEFINE WINDOWS}
65			{$ENDIF}
66	tony	45
67			{$IFDEF FPC}
68	tony	56	{$mode delphi}
69	tony	45	{$interfaces COM}
70			{$ENDIF}
71
72			interface
73
74			uses
75			Classes, SysUtils, IB, FB25ClientAPI, IBHeader, FBParamBlock, FBOutputBlock,
76			FBServices;
77
78			type
79			{ TFBServiceManager }
80
81			TFB25ServiceManager = class(TFBServiceManager,IServiceManager)
82			private
83			FHandle: TISC_SVC_HANDLE;
84			procedure CheckActive;
85			procedure CheckInactive;
86			protected
87	tony	56	procedure InternalAttach(ConnectString: AnsiString); override;
88	tony	45	public
89			property Handle: TISC_SVC_HANDLE read FHandle;
90
91			public
92			{IServiceManager}
93			procedure Detach(Force: boolean=false); override;
94			function IsAttached: boolean;
95			procedure Start(Request: ISRB);
96			function Query(SQPB: ISQPB; Request: ISRB): IServiceQueryResults; override;
97			end;
98
99			implementation
100
101			uses FBMessages;
102
103			{ TFBServiceManager }
104
105			procedure TFB25ServiceManager.CheckActive;
106			begin
107			if FHandle = nil then
108			IBError(ibxeServiceActive, [nil]);
109			end;
110
111			procedure TFB25ServiceManager.CheckInactive;
112			begin
113			if FHandle <> nil then
114			IBError(ibxeServiceInActive, [nil]);
115			end;
116
117	tony	56	procedure TFB25ServiceManager.InternalAttach(ConnectString: AnsiString);
118	tony	45	begin
119			with Firebird25ClientAPI do
120			if FSPB = nil then
121			begin
122			if isc_service_attach(StatusVector, Length(ConnectString),
123	tony	56	PAnsiChar(ConnectString), @FHandle, 0, nil) > 0 then
124	tony	45	IBDataBaseError;
125			end
126			else
127			begin
128			if isc_service_attach(StatusVector, Length(ConnectString),
129	tony	56	PAnsiChar(ConnectString), @FHandle,
130	tony	45	(FSPB as TSPB).getDataLength,
131			(FSPB as TSPB).getBuffer) > 0 then
132			IBDataBaseError;
133			end;
134			end;
135
136			procedure TFB25ServiceManager.Detach(Force: boolean);
137			begin
138			if FHandle = nil then
139			Exit;
140			with Firebird25ClientAPI do
141			if isc_service_detach(StatusVector, @FHandle) > 0 then
142			begin
143			FHandle := nil;
144			if not Force then
145			IBDataBaseError;
146			end
147			else
148			FHandle := nil;
149			end;
150
151			function TFB25ServiceManager.IsAttached: boolean;
152			begin
153			Result := FHandle <> nil;
154			end;
155
156			procedure TFB25ServiceManager.Start(Request: ISRB);
157			begin
158			CheckActive;
159			with Firebird25ClientAPI do
160			if isc_service_start(StatusVector, @FHandle, nil,
161			(Request as TSRB).getDataLength,
162			(Request as TSRB).getBuffer) > 0 then
163			IBDataBaseError;
164			end;
165
166			function TFB25ServiceManager.Query(SQPB: ISQPB; Request: ISRB
167			): IServiceQueryResults;
168			var QueryResults: TServiceQueryResults;
169			begin
170			CheckActive;
171			QueryResults := TServiceQueryResults.Create;
172			Result := QueryResults;
173			with Firebird25ClientAPI do
174			if SQPB = nil then
175			begin
176			if isc_service_query(StatusVector, @FHandle, nil,0,nil,
177			(Request as TSRB).getDataLength,
178			(Request as TSRB).getBuffer,
179			QueryResults.getBufSize,
180			QueryResults.Buffer) > 0 then
181			IBDataBaseError;
182			end
183			else
184			if isc_service_query(StatusVector, @FHandle, nil,
185			(SQPB as TSQPB).getDataLength,
186			(SQPB as TSQPB).getBuffer,
187			(Request as TSRB).getDataLength,
188			(Request as TSRB).getBuffer,
189			QueryResults.getBufSize,
190			QueryResults.Buffer) > 0 then
191			IBDataBaseError;
192
193			end;
194
195			end.
196