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 }

  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;
    function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
    function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true): 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;

function TFB25ServiceManager.Start(Request: ISRB; RaiseExceptionOnError: boolean
  ): boolean;
begin
  Result := true;
  CheckActive;
  with Firebird25ClientAPI do
  begin
    Result := isc_service_start(StatusVector, @FHandle, nil,
                           (Request as TSRB).getDataLength,
                           (Request as TSRB).getBuffer) = 0;
    if not Result and RaiseExceptionOnError then
      IBDataBaseError;
  end;
end;

function TFB25ServiceManager.Query(SQPB: ISQPB; Request: ISRB;
  RaiseExceptionOnError: boolean): 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
      begin
        if RaiseExceptionOnError then
          IBDataBaseError
        else
          Result := nil;
      end;
    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
    begin
      if RaiseExceptionOnError then
        IBDataBaseError
      else
        Result := nil;
    end;
end;

end.

Revision:	209
Committed:	Wed Mar 14 12:48:51 2018 UTC (6 years, 1 month ago) by tony
Content type:	text/x-pascal
File size:	7466 byte(s)
Log Message:	Fixes Merged
#	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	tony	209	{ TFB25ServiceManager }
82
83	tony	45	TFB25ServiceManager = class(TFBServiceManager,IServiceManager)
84			private
85			FHandle: TISC_SVC_HANDLE;
86			procedure CheckActive;
87			procedure CheckInactive;
88			protected
89	tony	56	procedure InternalAttach(ConnectString: AnsiString); override;
90	tony	45	public
91			property Handle: TISC_SVC_HANDLE read FHandle;
92
93			public
94			{IServiceManager}
95			procedure Detach(Force: boolean=false); override;
96			function IsAttached: boolean;
97	tony	209	function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
98			function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true): IServiceQueryResults; override;
99	tony	45	end;
100
101			implementation
102
103			uses FBMessages;
104
105			{ TFBServiceManager }
106
107			procedure TFB25ServiceManager.CheckActive;
108			begin
109			if FHandle = nil then
110			IBError(ibxeServiceActive, [nil]);
111			end;
112
113			procedure TFB25ServiceManager.CheckInactive;
114			begin
115			if FHandle <> nil then
116			IBError(ibxeServiceInActive, [nil]);
117			end;
118
119	tony	56	procedure TFB25ServiceManager.InternalAttach(ConnectString: AnsiString);
120	tony	45	begin
121			with Firebird25ClientAPI do
122			if FSPB = nil then
123			begin
124			if isc_service_attach(StatusVector, Length(ConnectString),
125	tony	56	PAnsiChar(ConnectString), @FHandle, 0, nil) > 0 then
126	tony	45	IBDataBaseError;
127			end
128			else
129			begin
130			if isc_service_attach(StatusVector, Length(ConnectString),
131	tony	56	PAnsiChar(ConnectString), @FHandle,
132	tony	45	(FSPB as TSPB).getDataLength,
133			(FSPB as TSPB).getBuffer) > 0 then
134			IBDataBaseError;
135			end;
136			end;
137
138			procedure TFB25ServiceManager.Detach(Force: boolean);
139			begin
140			if FHandle = nil then
141			Exit;
142			with Firebird25ClientAPI do
143			if isc_service_detach(StatusVector, @FHandle) > 0 then
144			begin
145			FHandle := nil;
146			if not Force then
147			IBDataBaseError;
148			end
149			else
150			FHandle := nil;
151			end;
152
153			function TFB25ServiceManager.IsAttached: boolean;
154			begin
155			Result := FHandle <> nil;
156			end;
157
158	tony	209	function TFB25ServiceManager.Start(Request: ISRB; RaiseExceptionOnError: boolean
159			): boolean;
160	tony	45	begin
161	tony	209	Result := true;
162	tony	45	CheckActive;
163			with Firebird25ClientAPI do
164	tony	209	begin
165			Result := isc_service_start(StatusVector, @FHandle, nil,
166	tony	45	(Request as TSRB).getDataLength,
167	tony	209	(Request as TSRB).getBuffer) = 0;
168			if not Result and RaiseExceptionOnError then
169			IBDataBaseError;
170			end;
171	tony	45	end;
172
173	tony	209	function TFB25ServiceManager.Query(SQPB: ISQPB; Request: ISRB;
174			RaiseExceptionOnError: boolean): IServiceQueryResults;
175	tony	45	var QueryResults: TServiceQueryResults;
176			begin
177			CheckActive;
178			QueryResults := TServiceQueryResults.Create;
179			Result := QueryResults;
180			with Firebird25ClientAPI do
181			if SQPB = nil then
182			begin
183			if isc_service_query(StatusVector, @FHandle, nil,0,nil,
184			(Request as TSRB).getDataLength,
185			(Request as TSRB).getBuffer,
186			QueryResults.getBufSize,
187			QueryResults.Buffer) > 0 then
188	tony	209	begin
189			if RaiseExceptionOnError then
190			IBDataBaseError
191			else
192			Result := nil;
193			end;
194	tony	45	end
195			else
196			if isc_service_query(StatusVector, @FHandle, nil,
197			(SQPB as TSQPB).getDataLength,
198			(SQPB as TSQPB).getBuffer,
199			(Request as TSRB).getDataLength,
200			(Request as TSRB).getBuffer,
201			QueryResults.getBufSize,
202			QueryResults.Buffer) > 0 then
203	tony	209	begin
204			if RaiseExceptionOnError then
205			IBDataBaseError
206			else
207			Result := nil;
208			end;
209	tony	45	end;
210
211			end.
212