client/3.0/FB30ClientAPI.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 FB30ClientAPI;
{$IFDEF MSWINDOWS} 
{$DEFINE WINDOWS} 
{$ENDIF}

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

interface

uses
  Classes, SysUtils, FBClientAPI, Firebird, IB, IBExternals;

type

  { TFB30Status }

  TFB30Status = class(TFBStatus,IStatus)
  private
    FStatus: Firebird.IStatus;
  public
    procedure Init;
    function InErrorState: boolean;
    function GetStatus: Firebird.IStatus;
    function StatusVector: PStatusVector; override;
  end;

  Tfb_get_master_interface = function: IMaster;
                              {$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}

  { TFB30ClientAPI }

  TFB30ClientAPI = class(TFBClientAPI,IFirebirdAPI)
  private
    FMaster: Firebird.IMaster;
    FUtil: Firebird.IUtil;
    FProvider: Firebird.IProvider;
    FConfigManager: Firebird.IConfigManager;
    FStatus: TFB30Status;
    FIsEmbeddedServer: boolean;
    FStatusIntf: IStatus;   {Keep a reference to the interface - automatic destroy
                             when this class is freed and last reference to IStatus
                             goes out of scope.}
    procedure CheckPlugins;
  protected
    {$IFDEF UNIX}
    function GetFirebirdLibList: string; override;
    {$ENDIF}
   procedure LoadInterface; override;
  public
    constructor Create;
    destructor Destroy; override;

    function StatusIntf: Firebird.IStatus;
    procedure Check4DataBaseError;
    function InErrorState: boolean;

  public
    {IFirebirdAPI}
    function GetStatus: IStatus; override;
    function AllocateDPB: IDPB;
    function AllocateTPB: ITPB;

    {Database connections}
    function OpenDatabase(DatabaseName: AnsiString; DPB: IDPB; RaiseExceptionOnConnectError: boolean=true): IAttachment;
    function CreateDatabase(DatabaseName: AnsiString; DPB: IDPB; RaiseExceptionOnError: boolean=true): IAttachment; overload;
    function CreateDatabase(sql: AnsiString; aSQLDialect: integer; RaiseExceptionOnError: boolean=true): IAttachment; overload;
    {Start Transaction against multiple databases}
    function StartTransaction(Attachments: array of IAttachment;
             TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload;
    function StartTransaction(Attachments: array of IAttachment;
             TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload;

    {Service Manager}
    function AllocateSPB: ISPB;
    function GetServiceManager(ServerName: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
    function GetServiceManager(ServerName: AnsiString; Port: Ansistring; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;

    {Information}
    function HasServiceAPI: boolean;
    function HasRollbackRetaining: boolean;
    function IsEmbeddedServer: boolean; override;
    function GetImplementationVersion: AnsiString;

    {Firebird 3 API}
    function HasMasterIntf: boolean;
    function GetIMaster: TObject;

    {Encode/Decode}
    function DecodeInteger(bufptr: PByte; len: short): integer; override;
    procedure SQLEncodeDate(aDate: TDateTime; bufptr: PByte); override;
    function SQLDecodeDate(bufptr: PByte): TDateTime; override;
    procedure SQLEncodeTime(aTime: TDateTime; bufptr: PByte); override;
    function SQLDecodeTime(bufptr: PByte): TDateTime;  override;
    procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte); override;
    function SQLDecodeDateTime(bufptr: PByte): TDateTime; override;

    {Firebird Interfaces}
    property MasterIntf: Firebird.IMaster read FMaster;
    property UtilIntf: Firebird.IUtil read FUtil;
    property ProviderIntf: Firebird.IProvider read FProvider;
  end;

var Firebird30ClientAPI: TFB30ClientAPI;

implementation

uses FBParamBlock, FB30Attachment, {$IFDEF FPC}dynlibs{$ELSE} windows{$ENDIF},
     FBMessages, FB30Services, FB30Transaction;

type
  PISC_DATE = ^ISC_DATE;
  PISC_TIME = ^ISC_TIME;

{ TFB30Status }

procedure TFB30Status.Init;
begin
  if assigned(FStatus) then
    FStatus.Init;
end;

function TFB30Status.InErrorState: boolean;
begin
  with GetStatus do
    Result := ((getState and STATE_ERRORS) <> 0);
end;

function TFB30Status.GetStatus: Firebird.IStatus;
begin
  if FStatus = nil then
  with FOwner do
    FStatus := (FOwner as TFB30ClientAPI).MasterIntf.GetStatus;
  Result := FStatus;
end;

function TFB30Status.StatusVector: PStatusVector;
begin
  Result := PStatusVector(GetStatus.getErrors);
end;

{ TFB30ClientAPI }

procedure TFB30ClientAPI.CheckPlugins;
var FBConf: Firebird.IFirebirdConf;
    Plugins: AnsiString;
    PluginsList: TStringList;
begin
  FIsEmbeddedServer := false;
  FBConf := FConfigManager.getFirebirdConf;
  try
    Plugins := FBConf.asString(FBConf.getKey('Providers'));
  finally
    FBConf.release;
  end;
  if Plugins = '' then Exit;

  PluginsList := TStringList.Create;
  try
    PluginsList.CommaText := Plugins;
    FIsEmbeddedServer := PluginsList.IndexOf('Engine12') <> -1;
  finally
    PluginsList.Free;
  end;
end;

{$IFDEF UNIX}
function TFB30ClientAPI.GetFirebirdLibList: string;
begin
  Result := 'libfbclient.so:libfbclient.so.2';
end;
{$ENDIF}

procedure TFB30ClientAPI.LoadInterface;
var
  fb_get_master_interface: Tfb_get_master_interface;
begin
  inherited LoadInterface;
  fb_get_master_interface := GetProcAddress(IBLibrary, 'fb_get_master_interface'); {do not localize}
  if assigned(fb_get_master_interface) then
  begin
    FMaster := fb_get_master_interface;
    FUtil := FMaster.getUtilInterface;
    FProvider := FMaster.getDispatcher;
    FConfigManager := FMaster.getConfigManager;
    CheckPlugins;
  end;
end;

constructor TFB30ClientAPI.Create;
begin
  inherited;
  FStatus := TFB30Status.Create(self);
  FStatusIntf := FStatus;
  Firebird30ClientAPI := self;
end;

destructor TFB30ClientAPI.Destroy;
begin
  if assigned(FProvider) then
    FProvider.release;
  inherited Destroy;
end;

function TFB30ClientAPI.StatusIntf: Firebird.IStatus;
begin
  Result := FStatus.GetStatus;
  Result.Init;
end;

procedure TFB30ClientAPI.Check4DataBaseError;
begin
  if FStatus.InErrorState then
    IBDataBaseError;
end;

function TFB30ClientAPI.InErrorState: boolean;
begin
  Result := FStatus.InErrorState;
end;

function TFB30ClientAPI.GetStatus: IStatus;
begin
  Result := FStatusIntf;
end;

function TFB30ClientAPI.AllocateDPB: IDPB;
begin
  Result := TDPB.Create;
end;

function TFB30ClientAPI.AllocateTPB: ITPB;
begin
  Result := TTPB.Create;
end;

function TFB30ClientAPI.OpenDatabase(DatabaseName: AnsiString; DPB: IDPB;
  RaiseExceptionOnConnectError: boolean): IAttachment;
begin
  Result := TFB30Attachment.Create(DatabaseName, DPB, RaiseExceptionOnConnectError);
  if not Result.IsConnected then
    Result := nil;
end;

function TFB30ClientAPI.CreateDatabase(DatabaseName: AnsiString; DPB: IDPB;
  RaiseExceptionOnError: boolean): IAttachment;
begin
  Result := TFB30Attachment.CreateDatabase(DatabaseName,DPB, RaiseExceptionOnError);
  if not Result.IsConnected then
    Result := nil;
end;

function TFB30ClientAPI.CreateDatabase(sql: AnsiString; aSQLDialect: integer;
  RaiseExceptionOnError: boolean): IAttachment;
begin
  Result := TFB30Attachment.CreateDatabase(sql,aSQLDialect, RaiseExceptionOnError);
  if not Result.IsConnected then
    Result := nil;
end;

function TFB30ClientAPI.StartTransaction(Attachments: array of IAttachment;
  TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  Result := TFB30Transaction.Create(Attachments,TPB,DefaultCompletion);
end;

function TFB30ClientAPI.StartTransaction(Attachments: array of IAttachment;
  TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction;
begin
  Result := TFB30Transaction.Create(Attachments,TPB,DefaultCompletion);
end;

function TFB30ClientAPI.AllocateSPB: ISPB;
begin
  Result := TSPB.Create;
end;

function TFB30ClientAPI.GetServiceManager(ServerName: AnsiString;
  Protocol: TProtocol; SPB: ISPB): IServiceManager;
begin
  Result := TFB30ServiceManager.Create(ServerName,Protocol,SPB);
end;

function TFB30ClientAPI.GetServiceManager(ServerName: AnsiString;
  Port: Ansistring; Protocol: TProtocol; SPB: ISPB): IServiceManager;
begin
  Result := TFB30ServiceManager.Create(ServerName,Protocol,SPB,Port);
end;

function TFB30ClientAPI.HasServiceAPI: boolean;
begin
  Result := true;
end;

function TFB30ClientAPI.HasMasterIntf: boolean;
begin
  Result := MasterIntf <> nil;
end;

function TFB30ClientAPI.GetIMaster: TObject;
begin
  Result := FMaster;
end;

function TFB30ClientAPI.HasRollbackRetaining: boolean;
begin
  Result := true;
end;

function TFB30ClientAPI.IsEmbeddedServer: boolean;
begin
  Result := FIsEmbeddedServer;
end;

function TFB30ClientAPI.GetImplementationVersion: AnsiString;
begin
  Result := Format('3.%d',[UtilIntf.GetClientVersion]);
end;

function TFB30ClientAPI.DecodeInteger(bufptr: PByte; len: short): integer;
var P: PByte;
begin
  Result := 0;
  P := Bufptr + len - 1;
  while P >= bufptr do
  begin
    Result := (Result shl 8 ) or P^;
    Dec(P);
  end;
end;

procedure TFB30ClientAPI.SQLEncodeDate(aDate: TDateTime; bufptr: PByte);
var
  Yr, Mn, Dy: Word;
begin
   DecodeDate(aDate, Yr, Mn, Dy);
   PISC_Date(Bufptr)^ := UtilIntf.encodeDate(Yr, Mn, Dy);
end;

function TFB30ClientAPI.SQLDecodeDate(bufptr: PByte): TDateTime;
var
  Yr, Mn, Dy: cardinal;
begin
  UtilIntf.decodeDate(PISC_DATE(bufptr)^,@Yr, @Mn, @Dy);
  try
    result := EncodeDate(Yr, Mn,Dy);
  except
    on E: EConvertError do begin
      IBError(ibxeInvalidDataConversion, [nil]);
    end;
  end;
end;

procedure TFB30ClientAPI.SQLEncodeTime(aTime: TDateTime; bufptr: PByte);
var
  Hr, Mt, S, Ms: Word;
begin
  DecodeTime(aTime, Hr, Mt, S, Ms);
  PISC_TIME(bufptr)^ :=  UtilIntf.encodeTime(Hr, Mt, S, Ms*10);
end;

function TFB30ClientAPI.SQLDecodeTime(bufptr: PByte): TDateTime;
var
  Hr, Mt, S, Ms: cardinal;
begin
  UtilIntf.decodeTime(PISC_TIME(bufptr)^,@Hr, @Mt, @S, @Ms);
  try
    Result := EncodeTime(Hr, Mt, S, Ms div 10);
  except
    on E: EConvertError do begin
      IBError(ibxeInvalidDataConversion, [nil]);
    end;
  end;
end;

procedure TFB30ClientAPI.SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte);
begin
  SQLEncodeDate(aDateTime,bufPtr);
  Inc(bufptr,sizeof(ISC_DATE));
  SQLEncodeTime(aDateTime,bufPtr);
end;

function TFB30ClientAPI.SQLDecodeDateTime(bufptr: PByte): TDateTime;
begin
  Result := SQLDecodeDate(bufPtr);
  Inc(bufptr,sizeof(ISC_DATE));
  Result := Result + SQLDecodeTime(bufPtr);
end;

end.


Revision:	143
Committed:	Fri Feb 23 12:11:21 2018 UTC (6 years, 2 months ago) by tony
Content type:	text/x-pascal
File size:	11395 byte(s)
Log Message:	Fixes Merged
#	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 FB30ClientAPI;
28	{$IFDEF MSWINDOWS}
29	{$DEFINE WINDOWS}
30	{$ENDIF}
31
32	{$IFDEF FPC}
33	{$mode delphi}
34	{$interfaces COM}
35	{$ENDIF}
36
37	interface
38
39	uses
40	Classes, SysUtils, FBClientAPI, Firebird, IB, IBExternals;
41
42	type
43
44	{ TFB30Status }
45
46	TFB30Status = class(TFBStatus,IStatus)
47	private
48	FStatus: Firebird.IStatus;
49	public
50	procedure Init;
51	function InErrorState: boolean;
52	function GetStatus: Firebird.IStatus;
53	function StatusVector: PStatusVector; override;
54	end;
55
56	Tfb_get_master_interface = function: IMaster;
57	{$IFDEF WINDOWS} stdcall; {$ELSE} cdecl; {$ENDIF}
58
59	{ TFB30ClientAPI }
60
61	TFB30ClientAPI = class(TFBClientAPI,IFirebirdAPI)
62	private
63	FMaster: Firebird.IMaster;
64	FUtil: Firebird.IUtil;
65	FProvider: Firebird.IProvider;
66	FConfigManager: Firebird.IConfigManager;
67	FStatus: TFB30Status;
68	FIsEmbeddedServer: boolean;
69	FStatusIntf: IStatus; {Keep a reference to the interface - automatic destroy
70	when this class is freed and last reference to IStatus
71	goes out of scope.}
72	procedure CheckPlugins;
73	protected
74	{$IFDEF UNIX}
75	function GetFirebirdLibList: string; override;
76	{$ENDIF}
77	procedure LoadInterface; override;
78	public
79	constructor Create;
80	destructor Destroy; override;
81
82	function StatusIntf: Firebird.IStatus;
83	procedure Check4DataBaseError;
84	function InErrorState: boolean;
85
86	public
87	{IFirebirdAPI}
88	function GetStatus: IStatus; override;
89	function AllocateDPB: IDPB;
90	function AllocateTPB: ITPB;
91
92	{Database connections}
93	function OpenDatabase(DatabaseName: AnsiString; DPB: IDPB; RaiseExceptionOnConnectError: boolean=true): IAttachment;
94	function CreateDatabase(DatabaseName: AnsiString; DPB: IDPB; RaiseExceptionOnError: boolean=true): IAttachment; overload;
95	function CreateDatabase(sql: AnsiString; aSQLDialect: integer; RaiseExceptionOnError: boolean=true): IAttachment; overload;
96	{Start Transaction against multiple databases}
97	function StartTransaction(Attachments: array of IAttachment;
98	TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction; overload;
99	function StartTransaction(Attachments: array of IAttachment;
100	TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction; overload;
101
102	{Service Manager}
103	function AllocateSPB: ISPB;
104	function GetServiceManager(ServerName: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
105	function GetServiceManager(ServerName: AnsiString; Port: Ansistring; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
106
107	{Information}
108	function HasServiceAPI: boolean;
109	function HasRollbackRetaining: boolean;
110	function IsEmbeddedServer: boolean; override;
111	function GetImplementationVersion: AnsiString;
112
113	{Firebird 3 API}
114	function HasMasterIntf: boolean;
115	function GetIMaster: TObject;
116
117	{Encode/Decode}
118	function DecodeInteger(bufptr: PByte; len: short): integer; override;
119	procedure SQLEncodeDate(aDate: TDateTime; bufptr: PByte); override;
120	function SQLDecodeDate(bufptr: PByte): TDateTime; override;
121	procedure SQLEncodeTime(aTime: TDateTime; bufptr: PByte); override;
122	function SQLDecodeTime(bufptr: PByte): TDateTime; override;
123	procedure SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte); override;
124	function SQLDecodeDateTime(bufptr: PByte): TDateTime; override;
125
126	{Firebird Interfaces}
127	property MasterIntf: Firebird.IMaster read FMaster;
128	property UtilIntf: Firebird.IUtil read FUtil;
129	property ProviderIntf: Firebird.IProvider read FProvider;
130	end;
131
132	var Firebird30ClientAPI: TFB30ClientAPI;
133
134	implementation
135
136	uses FBParamBlock, FB30Attachment, {$IFDEF FPC}dynlibs{$ELSE} windows{$ENDIF},
137	FBMessages, FB30Services, FB30Transaction;
138
139	type
140	PISC_DATE = ^ISC_DATE;
141	PISC_TIME = ^ISC_TIME;
142
143	{ TFB30Status }
144
145	procedure TFB30Status.Init;
146	begin
147	if assigned(FStatus) then
148	FStatus.Init;
149	end;
150
151	function TFB30Status.InErrorState: boolean;
152	begin
153	with GetStatus do
154	Result := ((getState and STATE_ERRORS) <> 0);
155	end;
156
157	function TFB30Status.GetStatus: Firebird.IStatus;
158	begin
159	if FStatus = nil then
160	with FOwner do
161	FStatus := (FOwner as TFB30ClientAPI).MasterIntf.GetStatus;
162	Result := FStatus;
163	end;
164
165	function TFB30Status.StatusVector: PStatusVector;
166	begin
167	Result := PStatusVector(GetStatus.getErrors);
168	end;
169
170	{ TFB30ClientAPI }
171
172	procedure TFB30ClientAPI.CheckPlugins;
173	var FBConf: Firebird.IFirebirdConf;
174	Plugins: AnsiString;
175	PluginsList: TStringList;
176	begin
177	FIsEmbeddedServer := false;
178	FBConf := FConfigManager.getFirebirdConf;
179	try
180	Plugins := FBConf.asString(FBConf.getKey('Providers'));
181	finally
182	FBConf.release;
183	end;
184	if Plugins = '' then Exit;
185
186	PluginsList := TStringList.Create;
187	try
188	PluginsList.CommaText := Plugins;
189	FIsEmbeddedServer := PluginsList.IndexOf('Engine12') <> -1;
190	finally
191	PluginsList.Free;
192	end;
193	end;
194
195	{$IFDEF UNIX}
196	function TFB30ClientAPI.GetFirebirdLibList: string;
197	begin
198	Result := 'libfbclient.so:libfbclient.so.2';
199	end;
200	{$ENDIF}
201
202	procedure TFB30ClientAPI.LoadInterface;
203	var
204	fb_get_master_interface: Tfb_get_master_interface;
205	begin
206	inherited LoadInterface;
207	fb_get_master_interface := GetProcAddress(IBLibrary, 'fb_get_master_interface'); {do not localize}
208	if assigned(fb_get_master_interface) then
209	begin
210	FMaster := fb_get_master_interface;
211	FUtil := FMaster.getUtilInterface;
212	FProvider := FMaster.getDispatcher;
213	FConfigManager := FMaster.getConfigManager;
214	CheckPlugins;
215	end;
216	end;
217
218	constructor TFB30ClientAPI.Create;
219	begin
220	inherited;
221	FStatus := TFB30Status.Create(self);
222	FStatusIntf := FStatus;
223	Firebird30ClientAPI := self;
224	end;
225
226	destructor TFB30ClientAPI.Destroy;
227	begin
228	if assigned(FProvider) then
229	FProvider.release;
230	inherited Destroy;
231	end;
232
233	function TFB30ClientAPI.StatusIntf: Firebird.IStatus;
234	begin
235	Result := FStatus.GetStatus;
236	Result.Init;
237	end;
238
239	procedure TFB30ClientAPI.Check4DataBaseError;
240	begin
241	if FStatus.InErrorState then
242	IBDataBaseError;
243	end;
244
245	function TFB30ClientAPI.InErrorState: boolean;
246	begin
247	Result := FStatus.InErrorState;
248	end;
249
250	function TFB30ClientAPI.GetStatus: IStatus;
251	begin
252	Result := FStatusIntf;
253	end;
254
255	function TFB30ClientAPI.AllocateDPB: IDPB;
256	begin
257	Result := TDPB.Create;
258	end;
259
260	function TFB30ClientAPI.AllocateTPB: ITPB;
261	begin
262	Result := TTPB.Create;
263	end;
264
265	function TFB30ClientAPI.OpenDatabase(DatabaseName: AnsiString; DPB: IDPB;
266	RaiseExceptionOnConnectError: boolean): IAttachment;
267	begin
268	Result := TFB30Attachment.Create(DatabaseName, DPB, RaiseExceptionOnConnectError);
269	if not Result.IsConnected then
270	Result := nil;
271	end;
272
273	function TFB30ClientAPI.CreateDatabase(DatabaseName: AnsiString; DPB: IDPB;
274	RaiseExceptionOnError: boolean): IAttachment;
275	begin
276	Result := TFB30Attachment.CreateDatabase(DatabaseName,DPB, RaiseExceptionOnError);
277	if not Result.IsConnected then
278	Result := nil;
279	end;
280
281	function TFB30ClientAPI.CreateDatabase(sql: AnsiString; aSQLDialect: integer;
282	RaiseExceptionOnError: boolean): IAttachment;
283	begin
284	Result := TFB30Attachment.CreateDatabase(sql,aSQLDialect, RaiseExceptionOnError);
285	if not Result.IsConnected then
286	Result := nil;
287	end;
288
289	function TFB30ClientAPI.StartTransaction(Attachments: array of IAttachment;
290	TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction;
291	begin
292	Result := TFB30Transaction.Create(Attachments,TPB,DefaultCompletion);
293	end;
294
295	function TFB30ClientAPI.StartTransaction(Attachments: array of IAttachment;
296	TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction;
297	begin
298	Result := TFB30Transaction.Create(Attachments,TPB,DefaultCompletion);
299	end;
300
301	function TFB30ClientAPI.AllocateSPB: ISPB;
302	begin
303	Result := TSPB.Create;
304	end;
305
306	function TFB30ClientAPI.GetServiceManager(ServerName: AnsiString;
307	Protocol: TProtocol; SPB: ISPB): IServiceManager;
308	begin
309	Result := TFB30ServiceManager.Create(ServerName,Protocol,SPB);
310	end;
311
312	function TFB30ClientAPI.GetServiceManager(ServerName: AnsiString;
313	Port: Ansistring; Protocol: TProtocol; SPB: ISPB): IServiceManager;
314	begin
315	Result := TFB30ServiceManager.Create(ServerName,Protocol,SPB,Port);
316	end;
317
318	function TFB30ClientAPI.HasServiceAPI: boolean;
319	begin
320	Result := true;
321	end;
322
323	function TFB30ClientAPI.HasMasterIntf: boolean;
324	begin
325	Result := MasterIntf <> nil;
326	end;
327
328	function TFB30ClientAPI.GetIMaster: TObject;
329	begin
330	Result := FMaster;
331	end;
332
333	function TFB30ClientAPI.HasRollbackRetaining: boolean;
334	begin
335	Result := true;
336	end;
337
338	function TFB30ClientAPI.IsEmbeddedServer: boolean;
339	begin
340	Result := FIsEmbeddedServer;
341	end;
342
343	function TFB30ClientAPI.GetImplementationVersion: AnsiString;
344	begin
345	Result := Format('3.%d',[UtilIntf.GetClientVersion]);
346	end;
347
348	function TFB30ClientAPI.DecodeInteger(bufptr: PByte; len: short): integer;
349	var P: PByte;
350	begin
351	Result := 0;
352	P := Bufptr + len - 1;
353	while P >= bufptr do
354	begin
355	Result := (Result shl 8 ) or P^;
356	Dec(P);
357	end;
358	end;
359
360	procedure TFB30ClientAPI.SQLEncodeDate(aDate: TDateTime; bufptr: PByte);
361	var
362	Yr, Mn, Dy: Word;
363	begin
364	DecodeDate(aDate, Yr, Mn, Dy);
365	PISC_Date(Bufptr)^ := UtilIntf.encodeDate(Yr, Mn, Dy);
366	end;
367
368	function TFB30ClientAPI.SQLDecodeDate(bufptr: PByte): TDateTime;
369	var
370	Yr, Mn, Dy: cardinal;
371	begin
372	UtilIntf.decodeDate(PISC_DATE(bufptr)^,@Yr, @Mn, @Dy);
373	try
374	result := EncodeDate(Yr, Mn,Dy);
375	except
376	on E: EConvertError do begin
377	IBError(ibxeInvalidDataConversion, [nil]);
378	end;
379	end;
380	end;
381
382	procedure TFB30ClientAPI.SQLEncodeTime(aTime: TDateTime; bufptr: PByte);
383	var
384	Hr, Mt, S, Ms: Word;
385	begin
386	DecodeTime(aTime, Hr, Mt, S, Ms);
387	PISC_TIME(bufptr)^ := UtilIntf.encodeTime(Hr, Mt, S, Ms*10);
388	end;
389
390	function TFB30ClientAPI.SQLDecodeTime(bufptr: PByte): TDateTime;
391	var
392	Hr, Mt, S, Ms: cardinal;
393	begin
394	UtilIntf.decodeTime(PISC_TIME(bufptr)^,@Hr, @Mt, @S, @Ms);
395	try
396	Result := EncodeTime(Hr, Mt, S, Ms div 10);
397	except
398	on E: EConvertError do begin
399	IBError(ibxeInvalidDataConversion, [nil]);
400	end;
401	end;
402	end;
403
404	procedure TFB30ClientAPI.SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte);
405	begin
406	SQLEncodeDate(aDateTime,bufPtr);
407	Inc(bufptr,sizeof(ISC_DATE));
408	SQLEncodeTime(aDateTime,bufPtr);
409	end;
410
411	function TFB30ClientAPI.SQLDecodeDateTime(bufptr: PByte): TDateTime;
412	begin
413	Result := SQLDecodeDate(bufPtr);
414	Inc(bufptr,sizeof(ISC_DATE));
415	Result := Result + SQLDecodeTime(bufPtr);
416	end;
417
418	end.
419
420