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;
{$IFDEF MSWINDOWS} 
{$DEFINE WINDOWS} 
{$ENDIF}

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

interface

uses
  Classes, SysUtils, IB,  FBParamBlock, FBActivityMonitor, FBClientAPI;

type

  { TFBServiceManager }

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

 { TSPBItem }

  TSPBItem = class(TParamBlockItem,ISPBItem)
  public
   function getParamTypeName: AnsiString; override;
   class function LookupParamTypeName(ParamType: byte): AnsiString;
  end;

 { TSPB }

  TSPB = class (TCustomParamBlock<TSPBItem,ISPBItem>, ISPB)
  protected
   function LookupItemType(ParamTypeName: AnsiString): byte; override;
  public
   constructor Create(api: TFBClientAPI);
   function GetDPBParamTypeName(ParamType: byte): Ansistring;
  end;

implementation

uses FBMessages, IBUtils;

const
  SPBPrefix = 'isc_spb_';
  isc_spb_last_spb_constant = 13;
  SPBConstantNames: array[1..isc_spb_last_spb_constant] of String = (
    'user_name',
    'sys_user_name',
    'sys_user_name_enc',
    'password',
    'password_enc',
    'command_line',
    'db_name',
    'verbose',
    'options',
    'connect_timeout',
    'dummy_packet_interval',
    'sql_role_name',
    'expected_db'
  );

  SPBConstantValues: array[1..isc_spb_last_spb_constant] of Integer = (
    isc_spb_user_name,
    isc_spb_sys_user_name,
    isc_spb_sys_user_name_enc,
    isc_spb_password,
    isc_spb_password_enc,
    isc_spb_command_line,
    isc_spb_dbname,
    isc_spb_verbose,
    isc_spb_options,
    isc_spb_connect_timeout,
    isc_spb_dummy_packet_interval,
    isc_spb_sql_role_name,
    isc_spb_expected_db
  );

{ TSPBItem }

function TSPBItem.getParamTypeName: AnsiString;
begin
    Result := LookupParamTypeName(getParamType);
end;

class function TSPBItem.LookupParamTypeName(ParamType: byte): AnsiString;
var i: integer;
begin
  Result := '';
  for i := 1 to isc_spb_last_spb_constant do
    if SPBConstantValues [i] = ParamType then
    begin
      Result := SPBConstantNames[i];
      break;
    end;
end;

{ TFBServiceManager }

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

constructor TFBServiceManager.Create(api: TFBClientAPI; ServerName: AnsiString;
  Protocol: TProtocol; SPB: ISPB; Port: AnsiString);
begin
  inherited Create;
  FFirebirdAPI := api.getAPI; {Keep reference to interface}
  FProtocol := Protocol;
  FSPB := SPB;
  FServerName := ServerName;
  FPort := Port;
  Attach;
end;

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

function TFBServiceManager.getFirebirdAPI: IFirebirdAPI;
begin
  Result := FFirebirdAPI;
end;

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

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

function TFBServiceManager.getProtocol: TProtocol;
begin
  Result := FProtocol;
end;

function TFBServiceManager.getPortNo: AnsiString;
begin
  Result := FPort;
end;

procedure TFBServiceManager.Attach;
var ConnectString: AnsiString;
begin
  ConnectString := MakeConnectString(FServerName,'service_mgr',FProtocol,FPort);
  InternalAttach(ConnectString);
end;

function TFBServiceManager.AllocateSRB: ISRB;
begin
  Result := TSRB.Create(FFirebirdAPI as TFBClientAPI);
end;

function TFBServiceManager.AllocateSQPB: ISQPB;
begin
   Result := TSQPB.Create(FFirebirdAPI as TFBClientAPI);
end;

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

{ TSPB }

function TSPB.LookupItemType(ParamTypeName: AnsiString): byte;
var i: integer;
begin
  Result := 0;
  ParamTypeName := LowerCase(ParamTypeName);
  if Pos(SPBPrefix,ParamTypeName) = 1 then
    system.Delete(ParamTypeName,1,Length(SPBPrefix));
  for i := 1 to isc_spb_last_spb_constant do
    if SPBConstantNames [i] = ParamTypeName then
    begin
      Result := SPBConstantValues[i];
      break;
    end;
end;

constructor TSPB.Create(api: TFBClientAPI);
begin
  inherited Create(api);
  FDataLength := 2;
  FBuffer^ := isc_spb_version;
  (FBuffer+1)^ := isc_spb_current_version;
end;

function TSPB.GetDPBParamTypeName(ParamType: byte): Ansistring;
begin
  Result := TSPBItem.LookupParamTypeName(ParamType);
end;

end.

Revision:	315
Committed:	Thu Feb 25 11:56:36 2021 UTC (3 years, 8 months ago) by tony
Content type:	text/x-pascal
Original Path:	*ibx/trunk/fbintf/client/FBServices.pas*
File size:	6573 byte(s)
Log Message:	Updated for IBX 4 release
#	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	{$IFDEF MSWINDOWS}
32	{$DEFINE WINDOWS}
33	{$ENDIF}
34
35	{$IFDEF FPC}
36	{$mode delphi}
37	{$interfaces COM}
38	{$ENDIF}
39
40	interface
41
42	uses
43	Classes, SysUtils, IB, FBParamBlock, FBActivityMonitor, FBClientAPI;
44
45	type
46
47	{ TFBServiceManager }
48
49	TFBServiceManager = class(TFBInterfacedObject)
50	private
51	FFirebirdAPI: IFirebirdAPI;
52	FProtocol: TProtocol;
53	FServerName: AnsiString;
54	FPort: AnsiString;
55	procedure CheckServerName;
56	protected
57	FSPB: ISPB;
58	procedure InternalAttach(ConnectString: AnsiString); virtual; abstract;
59	public
60	constructor Create(api: TFBClientAPI; ServerName: AnsiString; Protocol: TProtocol; SPB: ISPB; Port: AnsiString = '');
61	destructor Destroy; override;
62	public
63	{IServiceManager}
64	function getFirebirdAPI: IFirebirdAPI;
65	function getSPB: ISPB;
66	function getServerName: AnsiString;
67	function getProtocol: TProtocol;
68	function getPortNo: AnsiString;
69	procedure Attach;
70	procedure Detach(Force: boolean=false); virtual; abstract;
71	function AllocateSRB: ISRB;
72	function AllocateSQPB: ISQPB;
73	function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true): IServiceQueryResults; overload; virtual; abstract;
74	function Query(Request: ISRB; RaiseExceptionOnError: boolean=true): IServiceQueryResults; overload;
75	end;
76
77	{ TSPBItem }
78
79	TSPBItem = class(TParamBlockItem,ISPBItem)
80	public
81	function getParamTypeName: AnsiString; override;
82	class function LookupParamTypeName(ParamType: byte): AnsiString;
83	end;
84
85	{ TSPB }
86
87	TSPB = class (TCustomParamBlock<TSPBItem,ISPBItem>, ISPB)
88	protected
89	function LookupItemType(ParamTypeName: AnsiString): byte; override;
90	public
91	constructor Create(api: TFBClientAPI);
92	function GetDPBParamTypeName(ParamType: byte): Ansistring;
93	end;
94
95	implementation
96
97	uses FBMessages, IBUtils;
98
99	const
100	SPBPrefix = 'isc_spb_';
101	isc_spb_last_spb_constant = 13;
102	SPBConstantNames: array[1..isc_spb_last_spb_constant] of String = (
103	'user_name',
104	'sys_user_name',
105	'sys_user_name_enc',
106	'password',
107	'password_enc',
108	'command_line',
109	'db_name',
110	'verbose',
111	'options',
112	'connect_timeout',
113	'dummy_packet_interval',
114	'sql_role_name',
115	'expected_db'
116	);
117
118	SPBConstantValues: array[1..isc_spb_last_spb_constant] of Integer = (
119	isc_spb_user_name,
120	isc_spb_sys_user_name,
121	isc_spb_sys_user_name_enc,
122	isc_spb_password,
123	isc_spb_password_enc,
124	isc_spb_command_line,
125	isc_spb_dbname,
126	isc_spb_verbose,
127	isc_spb_options,
128	isc_spb_connect_timeout,
129	isc_spb_dummy_packet_interval,
130	isc_spb_sql_role_name,
131	isc_spb_expected_db
132	);
133
134	{ TSPBItem }
135
136	function TSPBItem.getParamTypeName: AnsiString;
137	begin
138	Result := LookupParamTypeName(getParamType);
139	end;
140
141	class function TSPBItem.LookupParamTypeName(ParamType: byte): AnsiString;
142	var i: integer;
143	begin
144	Result := '';
145	for i := 1 to isc_spb_last_spb_constant do
146	if SPBConstantValues [i] = ParamType then
147	begin
148	Result := SPBConstantNames[i];
149	break;
150	end;
151	end;
152
153	{ TFBServiceManager }
154
155	procedure TFBServiceManager.CheckServerName;
156	begin
157	if (FServerName = '') and (FProtocol <> Local) then
158	IBError(ibxeServerNameMissing, [nil]);
159	end;
160
161	constructor TFBServiceManager.Create(api: TFBClientAPI; ServerName: AnsiString;
162	Protocol: TProtocol; SPB: ISPB; Port: AnsiString);
163	begin
164	inherited Create;
165	FFirebirdAPI := api.getAPI; {Keep reference to interface}
166	FProtocol := Protocol;
167	FSPB := SPB;
168	FServerName := ServerName;
169	FPort := Port;
170	Attach;
171	end;
172
173	destructor TFBServiceManager.Destroy;
174	begin
175	Detach(true);
176	inherited Destroy;
177	end;
178
179	function TFBServiceManager.getFirebirdAPI: IFirebirdAPI;
180	begin
181	Result := FFirebirdAPI;
182	end;
183
184	function TFBServiceManager.getSPB: ISPB;
185	begin
186	Result := FSPB;
187	end;
188
189	function TFBServiceManager.getServerName: AnsiString;
190	begin
191	Result := FServerName;
192	end;
193
194	function TFBServiceManager.getProtocol: TProtocol;
195	begin
196	Result := FProtocol;
197	end;
198
199	function TFBServiceManager.getPortNo: AnsiString;
200	begin
201	Result := FPort;
202	end;
203
204	procedure TFBServiceManager.Attach;
205	var ConnectString: AnsiString;
206	begin
207	ConnectString := MakeConnectString(FServerName,'service_mgr',FProtocol,FPort);
208	InternalAttach(ConnectString);
209	end;
210
211	function TFBServiceManager.AllocateSRB: ISRB;
212	begin
213	Result := TSRB.Create(FFirebirdAPI as TFBClientAPI);
214	end;
215
216	function TFBServiceManager.AllocateSQPB: ISQPB;
217	begin
218	Result := TSQPB.Create(FFirebirdAPI as TFBClientAPI);
219	end;
220
221	function TFBServiceManager.Query(Request: ISRB; RaiseExceptionOnError: boolean
222	): IServiceQueryResults;
223	begin
224	Result := Query(nil,Request,RaiseExceptionOnError);
225	end;
226
227	{ TSPB }
228
229	function TSPB.LookupItemType(ParamTypeName: AnsiString): byte;
230	var i: integer;
231	begin
232	Result := 0;
233	ParamTypeName := LowerCase(ParamTypeName);
234	if Pos(SPBPrefix,ParamTypeName) = 1 then
235	system.Delete(ParamTypeName,1,Length(SPBPrefix));
236	for i := 1 to isc_spb_last_spb_constant do
237	if SPBConstantNames [i] = ParamTypeName then
238	begin
239	Result := SPBConstantValues[i];
240	break;
241	end;
242	end;
243
244	constructor TSPB.Create(api: TFBClientAPI);
245	begin
246	inherited Create(api);
247	FDataLength := 2;
248	FBuffer^ := isc_spb_version;
249	(FBuffer+1)^ := isc_spb_current_version;
250	end;
251
252	function TSPB.GetDPBParamTypeName(ParamType: byte): Ansistring;
253	begin
254	Result := TSPBItem.LookupParamTypeName(ParamType);
255	end;
256
257	end.
258