client/3.0/FB30Services.pas

(*
 *  Firebird Interface (fbintf). The fbintf components provide a set of
 *  Pascal language bindings for the Firebird API.
 *
 *  The 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): ______________________________________.
 *
*)
unit FB30Services;
{$IFDEF MSWINDOWS} 
{$DEFINE WINDOWS} 
{$ENDIF}

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

interface

uses
  Classes, SysUtils, Firebird, IB, FB30ClientAPI, FBParamBlock, FBOutputBlock,
    FBServices;

type
  { TFBServiceManager }

  TFB30ServiceManager = class(TFBServiceManager,IServiceManager)
  private
    FServiceIntf: Firebird.IService;
    procedure CheckActive;
    procedure CheckInactive;
  protected
    procedure InternalAttach(ConnectString: AnsiString); override;
  public
    property ServiceIntf: Firebird.IService read FServiceIntf;

  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 TFB30ServiceManager.CheckActive;
begin
  if FServiceIntf = nil then
    IBError(ibxeServiceActive, [nil]);
end;

procedure TFB30ServiceManager.CheckInactive;
begin
  if FServiceIntf <> nil then
    IBError(ibxeServiceInActive, [nil]);
end;

procedure TFB30ServiceManager.InternalAttach(ConnectString: AnsiString);
begin
  with Firebird30ClientAPI do
  if FSPB = nil then
  begin
    FServiceIntf := ProviderIntf.attachServiceManager(StatusIntf, PAnsiChar(ConnectString), 0, nil);
    Check4DataBaseError;
  end
  else
  begin
    FServiceIntf := ProviderIntf.attachServiceManager(StatusIntf,
                                               PAnsiChar(ConnectString),
                                               (FSPB as TSPB).getDataLength,
                                               BytePtr((FSPB as TSPB).getBuffer));
    Check4DataBaseError;
  end;
end;

procedure TFB30ServiceManager.Detach(Force: boolean);
begin
  if FServiceIntf = nil then
    Exit;
  with Firebird30ClientAPI do
  begin
    FServiceIntf.detach(StatusIntf);
    if not Force and InErrorState then
      IBDataBaseError;
    FServiceIntf := nil;
  end;
end;

function TFB30ServiceManager.IsAttached: boolean;
begin
  Result := FServiceIntf <> nil;
end;

procedure TFB30ServiceManager.Start(Request: ISRB);
begin
  CheckActive;
  with Firebird30ClientAPI do
    begin
      FServiceIntf.Start(StatusIntf,
                           (Request as TSRB).getDataLength,
                           BytePtr((Request as TSRB).getBuffer));
      Check4DataBaseError;
    end;
end;

function TFB30ServiceManager.Query(SQPB: ISQPB; Request: ISRB
  ): IServiceQueryResults;
var QueryResults: TServiceQueryResults;
begin
  CheckActive;
  QueryResults := TServiceQueryResults.Create;
  Result := QueryResults;
  with Firebird30ClientAPI do
  begin
    if SQPB <> nil then
    begin
      FServiceIntf.query(StatusIntf,
                         (SQPB as TSQPB).getDataLength,
                         BytePtr((SQPB as TSQPB).getBuffer),
                         (Request as TSRB).getDataLength,
                         BytePtr((Request as TSRB).getBuffer),
                         QueryResults.getBufSize,
                         BytePtr(QueryResults.Buffer));
        Check4DataBaseError;
    end
    else
     FServiceIntf.query(StatusIntf, 0, nil,
                       (Request as TSRB).getDataLength,
                       BytePtr((Request as TSRB).getBuffer),
                       QueryResults.getBufSize,
                       BytePtr(QueryResults.Buffer));
      Check4DataBaseError;
  end;
end;

end.

Revision:	56
Committed:	Mon Mar 6 10:20:02 2017 UTC (7 years, 1 month ago) by tony
Content type:	text/x-pascal
File size:	4407 byte(s)
Log Message:	Committing updates for Trunk
#	Content
1	(*
2	* Firebird Interface (fbintf). The fbintf components provide a set of
3	* Pascal language bindings for the Firebird API.
4	*
5	* The contents of this file are subject to the Initial Developer's
6	* Public License Version 1.0 (the "License"); you may not use this
7	* file except in compliance with the License. You may obtain a copy
8	* of the License here:
9	*
10	* http://www.firebirdsql.org/index.php?op=doc&id=idpl
11	*
12	* Software distributed under the License is distributed on an "AS
13	* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
14	* implied. See the License for the specific language governing rights
15	* and limitations under the License.
16	*
17	* The Initial Developer of the Original Code is Tony Whyman.
18	*
19	* The Original Code is (C) 2016 Tony Whyman, MWA Software
20	* (http://www.mwasoftware.co.uk).
21	*
22	* All Rights Reserved.
23	*
24	* Contributor(s): ______________________________________.
25	*
26	*)
27	unit FB30Services;
28	{$IFDEF MSWINDOWS}
29	{$DEFINE WINDOWS}
30	{$ENDIF}
31
32	{$IFDEF FPC}
33	{$mode delphi}
34	{$interfaces COM}
35	{$ENDIF}
36
37	interface
38
39	uses
40	Classes, SysUtils, Firebird, IB, FB30ClientAPI, FBParamBlock, FBOutputBlock,
41	FBServices;
42
43	type
44	{ TFBServiceManager }
45
46	TFB30ServiceManager = class(TFBServiceManager,IServiceManager)
47	private
48	FServiceIntf: Firebird.IService;
49	procedure CheckActive;
50	procedure CheckInactive;
51	protected
52	procedure InternalAttach(ConnectString: AnsiString); override;
53	public
54	property ServiceIntf: Firebird.IService read FServiceIntf;
55
56	public
57	{IServiceManager}
58	procedure Detach(Force: boolean=false); override;
59	function IsAttached: boolean;
60	procedure Start(Request: ISRB);
61	function Query(SQPB: ISQPB; Request: ISRB): IServiceQueryResults; override;
62	end;
63
64	implementation
65
66	uses FBMessages;
67
68	{ TFBServiceManager }
69
70	procedure TFB30ServiceManager.CheckActive;
71	begin
72	if FServiceIntf = nil then
73	IBError(ibxeServiceActive, [nil]);
74	end;
75
76	procedure TFB30ServiceManager.CheckInactive;
77	begin
78	if FServiceIntf <> nil then
79	IBError(ibxeServiceInActive, [nil]);
80	end;
81
82	procedure TFB30ServiceManager.InternalAttach(ConnectString: AnsiString);
83	begin
84	with Firebird30ClientAPI do
85	if FSPB = nil then
86	begin
87	FServiceIntf := ProviderIntf.attachServiceManager(StatusIntf, PAnsiChar(ConnectString), 0, nil);
88	Check4DataBaseError;
89	end
90	else
91	begin
92	FServiceIntf := ProviderIntf.attachServiceManager(StatusIntf,
93	PAnsiChar(ConnectString),
94	(FSPB as TSPB).getDataLength,
95	BytePtr((FSPB as TSPB).getBuffer));
96	Check4DataBaseError;
97	end;
98	end;
99
100	procedure TFB30ServiceManager.Detach(Force: boolean);
101	begin
102	if FServiceIntf = nil then
103	Exit;
104	with Firebird30ClientAPI do
105	begin
106	FServiceIntf.detach(StatusIntf);
107	if not Force and InErrorState then
108	IBDataBaseError;
109	FServiceIntf := nil;
110	end;
111	end;
112
113	function TFB30ServiceManager.IsAttached: boolean;
114	begin
115	Result := FServiceIntf <> nil;
116	end;
117
118	procedure TFB30ServiceManager.Start(Request: ISRB);
119	begin
120	CheckActive;
121	with Firebird30ClientAPI do
122	begin
123	FServiceIntf.Start(StatusIntf,
124	(Request as TSRB).getDataLength,
125	BytePtr((Request as TSRB).getBuffer));
126	Check4DataBaseError;
127	end;
128	end;
129
130	function TFB30ServiceManager.Query(SQPB: ISQPB; Request: ISRB
131	): IServiceQueryResults;
132	var QueryResults: TServiceQueryResults;
133	begin
134	CheckActive;
135	QueryResults := TServiceQueryResults.Create;
136	Result := QueryResults;
137	with Firebird30ClientAPI do
138	begin
139	if SQPB <> nil then
140	begin
141	FServiceIntf.query(StatusIntf,
142	(SQPB as TSQPB).getDataLength,
143	BytePtr((SQPB as TSQPB).getBuffer),
144	(Request as TSRB).getDataLength,
145	BytePtr((Request as TSRB).getBuffer),
146	QueryResults.getBufSize,
147	BytePtr(QueryResults.Buffer));
148	Check4DataBaseError;
149	end
150	else
151	FServiceIntf.query(StatusIntf, 0, nil,
152	(Request as TSRB).getDataLength,
153	BytePtr((Request as TSRB).getBuffer),
154	QueryResults.getBufSize,
155	BytePtr(QueryResults.Buffer));
156	Check4DataBaseError;
157	end;
158	end;
159
160	end.
161