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;
  public
    constructor Create(aFBLibrary: TFBLibrary);
    destructor Destroy; override;

    function StatusIntf: Firebird.IStatus;
    procedure Check4DataBaseError;
    function InErrorState: boolean;
    function LoadInterface: boolean; override;
    function GetAPI: IFirebirdAPI; override;
    {$IFDEF UNIX}
    function GetFirebirdLibList: string; override;
    {$ENDIF}

  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;

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}

function TFB30ClientAPI.LoadInterface: boolean;
var
  fb_get_master_interface: Tfb_get_master_interface;
begin
  Result := inherited LoadInterface;
  fb_get_master_interface := GetProcAddress(GetFBLibrary.GetHandle, '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;
  Result := Result and HasMasterIntf;
end;

function TFB30ClientAPI.GetAPI: IFirebirdAPI;
begin
  Result := self;
end;

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

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

function TFB30ClientAPI.OpenDatabase(DatabaseName: AnsiString; DPB: IDPB;
  RaiseExceptionOnConnectError: boolean): IAttachment;
begin
  Result := TFB30Attachment.Create(self,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(self,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(self,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(self,Attachments,TPB,DefaultCompletion);
end;

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

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

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

function TFB30ClientAPI.GetServiceManager(ServerName: AnsiString;
  Port: Ansistring; Protocol: TProtocol; SPB: ISPB): IServiceManager;
begin
  Result := TFB30ServiceManager.Create(self,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:	263
Committed:	Thu Dec 6 15:55:01 2018 UTC (5 years, 4 months ago) by tony
Content type:	text/x-pascal
File size:	11629 byte(s)
Log Message:	Release 2.3.2 committed
#	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.
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	tony	56	{$IFDEF MSWINDOWS}
29			{$DEFINE WINDOWS}
30			{$ENDIF}
31	tony	45
32			{$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			public
74	tony	263	constructor Create(aFBLibrary: TFBLibrary);
75	tony	45	destructor Destroy; override;
76
77			function StatusIntf: Firebird.IStatus;
78			procedure Check4DataBaseError;
79			function InErrorState: boolean;
80	tony	263	function LoadInterface: boolean; override;
81			function GetAPI: IFirebirdAPI; override;
82			{$IFDEF UNIX}
83			function GetFirebirdLibList: string; override;
84			{$ENDIF}
85	tony	45
86			public
87			{IFirebirdAPI}
88			function GetStatus: IStatus; override;
89			function AllocateDPB: IDPB;
90			function AllocateTPB: ITPB;
91
92			{Database connections}
93	tony	56	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	tony	45	{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	tony	143	function GetServiceManager(ServerName: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
105			function GetServiceManager(ServerName: AnsiString; Port: Ansistring; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
106	tony	45
107			{Information}
108			function HasServiceAPI: boolean;
109			function HasRollbackRetaining: boolean;
110			function IsEmbeddedServer: boolean; override;
111	tony	56	function GetImplementationVersion: AnsiString;
112	tony	45
113			{Firebird 3 API}
114			function HasMasterIntf: boolean;
115			function GetIMaster: TObject;
116
117			{Encode/Decode}
118	tony	56	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	tony	45
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			implementation
133
134	tony	56	uses FBParamBlock, FB30Attachment, {$IFDEF FPC}dynlibs{$ELSE} windows{$ENDIF},
135			FBMessages, FB30Services, FB30Transaction;
136	tony	45
137			type
138			PISC_DATE = ^ISC_DATE;
139			PISC_TIME = ^ISC_TIME;
140
141			{ TFB30Status }
142
143			procedure TFB30Status.Init;
144			begin
145			if assigned(FStatus) then
146			FStatus.Init;
147			end;
148
149			function TFB30Status.InErrorState: boolean;
150			begin
151			with GetStatus do
152			Result := ((getState and STATE_ERRORS) <> 0);
153			end;
154
155			function TFB30Status.GetStatus: Firebird.IStatus;
156			begin
157			if FStatus = nil then
158			with FOwner do
159			FStatus := (FOwner as TFB30ClientAPI).MasterIntf.GetStatus;
160			Result := FStatus;
161			end;
162
163			function TFB30Status.StatusVector: PStatusVector;
164			begin
165			Result := PStatusVector(GetStatus.getErrors);
166			end;
167
168			{ TFB30ClientAPI }
169
170			procedure TFB30ClientAPI.CheckPlugins;
171			var FBConf: Firebird.IFirebirdConf;
172	tony	56	Plugins: AnsiString;
173	tony	45	PluginsList: TStringList;
174			begin
175			FIsEmbeddedServer := false;
176			FBConf := FConfigManager.getFirebirdConf;
177			try
178			Plugins := FBConf.asString(FBConf.getKey('Providers'));
179			finally
180			FBConf.release;
181			end;
182			if Plugins = '' then Exit;
183
184			PluginsList := TStringList.Create;
185			try
186			PluginsList.CommaText := Plugins;
187			FIsEmbeddedServer := PluginsList.IndexOf('Engine12') <> -1;
188			finally
189			PluginsList.Free;
190			end;
191			end;
192
193			{$IFDEF UNIX}
194			function TFB30ClientAPI.GetFirebirdLibList: string;
195			begin
196			Result := 'libfbclient.so:libfbclient.so.2';
197			end;
198			{$ENDIF}
199
200	tony	263	function TFB30ClientAPI.LoadInterface: boolean;
201	tony	45	var
202			fb_get_master_interface: Tfb_get_master_interface;
203			begin
204	tony	263	Result := inherited LoadInterface;
205			fb_get_master_interface := GetProcAddress(GetFBLibrary.GetHandle, 'fb_get_master_interface'); {do not localize}
206	tony	45	if assigned(fb_get_master_interface) then
207			begin
208			FMaster := fb_get_master_interface;
209			FUtil := FMaster.getUtilInterface;
210			FProvider := FMaster.getDispatcher;
211			FConfigManager := FMaster.getConfigManager;
212			CheckPlugins;
213			end;
214	tony	263	Result := Result and HasMasterIntf;
215	tony	45	end;
216
217	tony	263	function TFB30ClientAPI.GetAPI: IFirebirdAPI;
218	tony	45	begin
219	tony	263	Result := self;
220			end;
221
222			constructor TFB30ClientAPI.Create(aFBLibrary: TFBLibrary);
223			begin
224			inherited Create(aFBLibrary);
225	tony	45	FStatus := TFB30Status.Create(self);
226			FStatusIntf := FStatus;
227			end;
228
229			destructor TFB30ClientAPI.Destroy;
230			begin
231			if assigned(FProvider) then
232			FProvider.release;
233			inherited Destroy;
234			end;
235
236			function TFB30ClientAPI.StatusIntf: Firebird.IStatus;
237			begin
238			Result := FStatus.GetStatus;
239			Result.Init;
240			end;
241
242			procedure TFB30ClientAPI.Check4DataBaseError;
243			begin
244			if FStatus.InErrorState then
245			IBDataBaseError;
246			end;
247
248			function TFB30ClientAPI.InErrorState: boolean;
249			begin
250			Result := FStatus.InErrorState;
251			end;
252
253			function TFB30ClientAPI.GetStatus: IStatus;
254			begin
255			Result := FStatusIntf;
256			end;
257
258			function TFB30ClientAPI.AllocateDPB: IDPB;
259			begin
260	tony	263	Result := TDPB.Create(self);
261	tony	45	end;
262
263			function TFB30ClientAPI.AllocateTPB: ITPB;
264			begin
265	tony	263	Result := TTPB.Create(self);
266	tony	45	end;
267
268	tony	56	function TFB30ClientAPI.OpenDatabase(DatabaseName: AnsiString; DPB: IDPB;
269	tony	45	RaiseExceptionOnConnectError: boolean): IAttachment;
270			begin
271	tony	263	Result := TFB30Attachment.Create(self,DatabaseName, DPB, RaiseExceptionOnConnectError);
272	tony	45	if not Result.IsConnected then
273			Result := nil;
274			end;
275
276	tony	56	function TFB30ClientAPI.CreateDatabase(DatabaseName: AnsiString; DPB: IDPB;
277	tony	45	RaiseExceptionOnError: boolean): IAttachment;
278			begin
279	tony	263	Result := TFB30Attachment.CreateDatabase(self,DatabaseName,DPB, RaiseExceptionOnError);
280	tony	45	if not Result.IsConnected then
281			Result := nil;
282			end;
283
284	tony	56	function TFB30ClientAPI.CreateDatabase(sql: AnsiString; aSQLDialect: integer;
285	tony	47	RaiseExceptionOnError: boolean): IAttachment;
286			begin
287	tony	263	Result := TFB30Attachment.CreateDatabase(self,sql,aSQLDialect, RaiseExceptionOnError);
288	tony	47	if not Result.IsConnected then
289			Result := nil;
290			end;
291
292	tony	45	function TFB30ClientAPI.StartTransaction(Attachments: array of IAttachment;
293			TPB: array of byte; DefaultCompletion: TTransactionCompletion): ITransaction;
294			begin
295	tony	263	Result := TFB30Transaction.Create(self,Attachments,TPB,DefaultCompletion);
296	tony	45	end;
297
298			function TFB30ClientAPI.StartTransaction(Attachments: array of IAttachment;
299			TPB: ITPB; DefaultCompletion: TTransactionCompletion): ITransaction;
300			begin
301	tony	263	Result := TFB30Transaction.Create(self,Attachments,TPB,DefaultCompletion);
302	tony	45	end;
303
304			function TFB30ClientAPI.AllocateSPB: ISPB;
305			begin
306	tony	263	Result := TSPB.Create(self);
307	tony	45	end;
308
309	tony	56	function TFB30ClientAPI.GetServiceManager(ServerName: AnsiString;
310	tony	45	Protocol: TProtocol; SPB: ISPB): IServiceManager;
311			begin
312	tony	263	Result := TFB30ServiceManager.Create(self,ServerName,Protocol,SPB);
313	tony	45	end;
314
315	tony	143	function TFB30ClientAPI.GetServiceManager(ServerName: AnsiString;
316			Port: Ansistring; Protocol: TProtocol; SPB: ISPB): IServiceManager;
317			begin
318	tony	263	Result := TFB30ServiceManager.Create(self,ServerName,Protocol,SPB,Port);
319	tony	143	end;
320
321	tony	45	function TFB30ClientAPI.HasServiceAPI: boolean;
322			begin
323			Result := true;
324			end;
325
326			function TFB30ClientAPI.HasMasterIntf: boolean;
327			begin
328			Result := MasterIntf <> nil;
329			end;
330
331			function TFB30ClientAPI.GetIMaster: TObject;
332			begin
333			Result := FMaster;
334			end;
335
336			function TFB30ClientAPI.HasRollbackRetaining: boolean;
337			begin
338			Result := true;
339			end;
340
341			function TFB30ClientAPI.IsEmbeddedServer: boolean;
342			begin
343			Result := FIsEmbeddedServer;
344			end;
345
346	tony	56	function TFB30ClientAPI.GetImplementationVersion: AnsiString;
347	tony	45	begin
348			Result := Format('3.%d',[UtilIntf.GetClientVersion]);
349			end;
350
351	tony	56	function TFB30ClientAPI.DecodeInteger(bufptr: PByte; len: short): integer;
352			var P: PByte;
353	tony	45	begin
354			Result := 0;
355			P := Bufptr + len - 1;
356			while P >= bufptr do
357			begin
358	tony	56	Result := (Result shl 8 ) or P^;
359	tony	45	Dec(P);
360			end;
361			end;
362
363	tony	56	procedure TFB30ClientAPI.SQLEncodeDate(aDate: TDateTime; bufptr: PByte);
364	tony	45	var
365			Yr, Mn, Dy: Word;
366			begin
367			DecodeDate(aDate, Yr, Mn, Dy);
368			PISC_Date(Bufptr)^ := UtilIntf.encodeDate(Yr, Mn, Dy);
369			end;
370
371	tony	56	function TFB30ClientAPI.SQLDecodeDate(bufptr: PByte): TDateTime;
372	tony	45	var
373	tony	56	Yr, Mn, Dy: cardinal;
374	tony	45	begin
375			UtilIntf.decodeDate(PISC_DATE(bufptr)^,@Yr, @Mn, @Dy);
376			try
377			result := EncodeDate(Yr, Mn,Dy);
378			except
379			on E: EConvertError do begin
380			IBError(ibxeInvalidDataConversion, [nil]);
381			end;
382			end;
383			end;
384
385	tony	56	procedure TFB30ClientAPI.SQLEncodeTime(aTime: TDateTime; bufptr: PByte);
386	tony	45	var
387			Hr, Mt, S, Ms: Word;
388			begin
389			DecodeTime(aTime, Hr, Mt, S, Ms);
390			PISC_TIME(bufptr)^ := UtilIntf.encodeTime(Hr, Mt, S, Ms*10);
391			end;
392
393	tony	56	function TFB30ClientAPI.SQLDecodeTime(bufptr: PByte): TDateTime;
394	tony	45	var
395	tony	56	Hr, Mt, S, Ms: cardinal;
396	tony	45	begin
397			UtilIntf.decodeTime(PISC_TIME(bufptr)^,@Hr, @Mt, @S, @Ms);
398			try
399			Result := EncodeTime(Hr, Mt, S, Ms div 10);
400			except
401			on E: EConvertError do begin
402			IBError(ibxeInvalidDataConversion, [nil]);
403			end;
404			end;
405			end;
406
407	tony	56	procedure TFB30ClientAPI.SQLEncodeDateTime(aDateTime: TDateTime; bufptr: PByte);
408	tony	45	begin
409			SQLEncodeDate(aDateTime,bufPtr);
410			Inc(bufptr,sizeof(ISC_DATE));
411			SQLEncodeTime(aDateTime,bufPtr);
412			end;
413
414	tony	56	function TFB30ClientAPI.SQLDecodeDateTime(bufptr: PByte): TDateTime;
415	tony	45	begin
416			Result := SQLDecodeDate(bufPtr);
417			Inc(bufptr,sizeof(ISC_DATE));
418	tony	56	Result := Result + SQLDecodeTime(bufPtr);
419	tony	45	end;
420
421			end.
422
423	tony	56