udr/client/FBServices.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): ______________________________________.
 *
*)
unit FBServices;

{$IFDEF FPC}
{$mode objfpc}{$H+}
{$interfaces COM}
{$ENDIF}

interface

uses
  Classes, SysUtils, IB,  FBParamBlock, FBActivityMonitor;

type

  { TFBServiceManager }

  TFBServiceManager = class(TFBInterfacedObject)
  private
    FFirebirdAPI: IFirebirdAPI;
    FProtocol: TProtocol;
    FServerName: string;
    procedure CheckServerName;
  protected
    FSPB: ISPB;
    procedure InternalAttach(ConnectString: string); virtual; abstract;
  public
    constructor Create(ServerName: string; Protocol: TProtocol; SPB: ISPB);
    destructor Destroy; override;
  public
    {IServiceManager}
    function getSPB: ISPB;
    function getServerName: string;
    procedure Attach;
    procedure Detach(Force: boolean=false); virtual; abstract;
    function AllocateSRB: ISRB;
    function AllocateSQPB: ISQPB;
    function Query(SQPB: ISQPB; Request: ISRB): IServiceQueryResults; virtual; abstract; overload;
    function Query(Request: ISRB): IServiceQueryResults;  overload;
  end;

implementation

uses FBMessages, FBClientAPI;

{ TFBServiceManager }

procedure TFBServiceManager.CheckServerName;
begin
  if (FServerName = '') and (FProtocol <> Local) then
    IBError(ibxeServerNameMissing, [nil]);
end;

constructor TFBServiceManager.Create(ServerName: string; Protocol: TProtocol;
  SPB: ISPB);
begin
  inherited Create;
  FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
  FProtocol := Protocol;
  FSPB := SPB;
  FServerName := ServerName;
  Attach;
end;

destructor TFBServiceManager.Destroy;
begin
  Detach(true);
  inherited Destroy;
end;

function TFBServiceManager.getSPB: ISPB;
begin
  Result := FSPB;
end;

function TFBServiceManager.getServerName: string;
begin
  Result := FServerName;
end;

procedure TFBServiceManager.Attach;
var ConnectString: String;
begin
  case FProtocol of
    TCP: ConnectString := FServerName + ':service_mgr'; {do not localize}
    SPX: ConnectString := FServerName + '@service_mgr'; {do not localize}
    NamedPipe: ConnectString := '\\' + FServerName + '\service_mgr'; {do not localize}
    Local: ConnectString := 'service_mgr'; {do not localize}
  end;
  InternalAttach(ConnectString);
end;

function TFBServiceManager.AllocateSRB: ISRB;
begin
  Result := TSRB.Create;
end;

function TFBServiceManager.AllocateSQPB: ISQPB;
begin
   Result := TSQPB.Create;
end;

function TFBServiceManager.Query(Request: ISRB): IServiceQueryResults;
begin
   Result := Query(nil,Request);
end;

end.

Revision:	45
Committed:	Tue Dec 6 10:33:46 2016 UTC (7 years, 11 months ago) by tony
Content type:	text/x-pascal
Original Path:	*ibx/trunk/fbintf/client/FBServices.pas*
File size:	3642 byte(s)
Log Message:	Committing updates for Release R2-0-0
#	Content
1	(*
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	unit FBServices;
31
32	{$IFDEF FPC}
33	{$mode objfpc}{$H+}
34	{$interfaces COM}
35	{$ENDIF}
36
37	interface
38
39	uses
40	Classes, SysUtils, IB, FBParamBlock, FBActivityMonitor;
41
42	type
43
44	{ TFBServiceManager }
45
46	TFBServiceManager = class(TFBInterfacedObject)
47	private
48	FFirebirdAPI: IFirebirdAPI;
49	FProtocol: TProtocol;
50	FServerName: string;
51	procedure CheckServerName;
52	protected
53	FSPB: ISPB;
54	procedure InternalAttach(ConnectString: string); virtual; abstract;
55	public
56	constructor Create(ServerName: string; Protocol: TProtocol; SPB: ISPB);
57	destructor Destroy; override;
58	public
59	{IServiceManager}
60	function getSPB: ISPB;
61	function getServerName: string;
62	procedure Attach;
63	procedure Detach(Force: boolean=false); virtual; abstract;
64	function AllocateSRB: ISRB;
65	function AllocateSQPB: ISQPB;
66	function Query(SQPB: ISQPB; Request: ISRB): IServiceQueryResults; virtual; abstract; overload;
67	function Query(Request: ISRB): IServiceQueryResults; overload;
68	end;
69
70	implementation
71
72	uses FBMessages, FBClientAPI;
73
74	{ TFBServiceManager }
75
76	procedure TFBServiceManager.CheckServerName;
77	begin
78	if (FServerName = '') and (FProtocol <> Local) then
79	IBError(ibxeServerNameMissing, [nil]);
80	end;
81
82	constructor TFBServiceManager.Create(ServerName: string; Protocol: TProtocol;
83	SPB: ISPB);
84	begin
85	inherited Create;
86	FFirebirdAPI := FirebirdAPI; {Keep reference to interface}
87	FProtocol := Protocol;
88	FSPB := SPB;
89	FServerName := ServerName;
90	Attach;
91	end;
92
93	destructor TFBServiceManager.Destroy;
94	begin
95	Detach(true);
96	inherited Destroy;
97	end;
98
99	function TFBServiceManager.getSPB: ISPB;
100	begin
101	Result := FSPB;
102	end;
103
104	function TFBServiceManager.getServerName: string;
105	begin
106	Result := FServerName;
107	end;
108
109	procedure TFBServiceManager.Attach;
110	var ConnectString: String;
111	begin
112	case FProtocol of
113	TCP: ConnectString := FServerName + ':service_mgr'; {do not localize}
114	SPX: ConnectString := FServerName + '@service_mgr'; {do not localize}
115	NamedPipe: ConnectString := '\\' + FServerName + '\service_mgr'; {do not localize}
116	Local: ConnectString := 'service_mgr'; {do not localize}
117	end;
118	InternalAttach(ConnectString);
119	end;
120
121	function TFBServiceManager.AllocateSRB: ISRB;
122	begin
123	Result := TSRB.Create;
124	end;
125
126	function TFBServiceManager.AllocateSQPB: ISQPB;
127	begin
128	Result := TSQPB.Create;
129	end;
130
131	function TFBServiceManager.Query(Request: ISRB): IServiceQueryResults;
132	begin
133	Result := Query(nil,Request);
134	end;
135
136	end.
137