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root/public/ibx/trunk/fbintf/IB.pas

Comparing ibx/trunk/fbintf/IB.pas (file contents):
Revision 117 by tony, Mon Jan 22 13:58:11 2018 UTC vs.
Revision 308 by tony, Sat Jul 18 10:26:30 2020 UTC

#	Line 73 | Line 73 | unit IB;
73		{$IFEND}
74		{$ENDIF}
75
76	+	{$IFNDEF LEGACYFIREBIRDAPIONLY}
77		{$DEFINE USEFIREBIRD3API}
78	+	{$ENDIF}
79	+	{$IFNDEF FIREBIRD3APIONLY}
80		{$DEFINE USELEGACYFIREBIRDAPI}
81	+	{$ENDIF}
82
83		{
84		This unit defines the interfaces used to provide the Pascal Language
#	Line 122 | Line 126 | unit IB;
126		interface
127
128		uses
129	<	Classes, SysUtils, DB, FBMessages, IBExternals;
129	>	Classes,
130	>	{$IFDEF WINDOWS}Windows, {$ENDIF}
131	>	{$IFDEF FPC} Dynlibs, {$ENDIF}
132	>	SysUtils, DB, FBMessages, IBExternals;
133
134		const
135		{Interface version information}
136		FBIntf_Major = 1;
137	<	FBIntf_Minor = 0;
138	<	FBIntf_Release = 2;
139	<	FBIntf_Version = '1.0.2';
137	>	FBIntf_Minor = 1;
138	>	FBIntf_Release = 6;
139	>	FBIntf_Version = '1.1.6';
140
141		{These include files are converted from the 'C' originals in the Firebird API
142		and define the various constants used by the API}
#	Line 173 | Line 180 | type
180		PISC_QUAD            = ^TISC_QUAD;
181
182		{$IFNDEF FPC}
183	+	{Delphi missing definitions}
184	+	type
185	+	TLibHandle = THandle;
186	+
187	+	const
188	+	NilHandle = 0;
189	+	DirectorySeparator = '\';
190	+
191		{Delphi only seems to define CP_UTF8 and CP_UTF16}
192		const
193		CP_ACP     = 0;     // default to ANSI code page
#	Line 195 | Line 210 | type
210		SQLGetSegment, SQLPutSegment,
211		SQLExecProcedure, SQLStartTransaction,
212		SQLCommit, SQLRollback,
213	<	SQLSelectForUpdate, SQLSetGenerator);
213	>	SQLSelectForUpdate, SQLSetGenerator,
214	>	SQLSavePoint);
215
216		TFBStatusCode = cardinal;
217		TByteArray = array of byte;
218
219	+	IFirebirdAPI = interface;
220		IAttachment = interface;
221		ITransaction = interface;
222	+	IStatement = interface;
223
224		{The IParameterBlock interface provides the template for all parameter
225		block interfaces}
#	Line 241 | Line 259 | type
259		This interface can be accessed from IFirebirdAPI.
260		}
261
262	+	TIBDataBaseErrorMessage    = (ShowSQLCode,
263	+	ShowIBMessage,
264	+	ShowSQLMessage);
265	+
266	+	TIBDataBaseErrorMessages   = set of TIBDataBaseErrorMessage;
267	+
268		IStatus = interface
269		['{34167722-af38-4831-b08a-93162d58ede3}']
270		function GetIBErrorCode: Long;
#	Line 395 | Line 419 | type
419		the output of an SQL Statement.
420		}
421
422	+	TIBDateTimeFormats = (dfTimestamp, {SQL TIMESTAMP}
423	+	dfDateTime,   {SQL DATETIME}
424	+	dfTime);      {SQL TIME}
425	+
426		{ IColumnMetaData }
427
428		IColumnMetaData = interface
#	Line 415 | Line 443 | type
443		function GetSize: cardinal;
444		function GetArrayMetaData: IArrayMetaData; {Valid only for Array SQL Type}
445		function GetBlobMetaData: IBlobMetaData; {Valid only for Blob SQL Type}
446	+	function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
447	+	function GetStatement: IStatement;
448	+	function GetTransaction: ITransaction;
449		property Name: AnsiString read GetName;
450		property Size: cardinal read GetSize;
451		property SQLType: cardinal read GetSQLType;
#	Line 456 | Line 487 | type
487
488		ISQLData = interface(IColumnMetaData)
489		['{3f493e31-7e3f-4606-a07c-b210b9e3619d}']
490	+	function GetStrDataLength: short;
491		function GetAsBoolean: boolean;
492		function GetAsCurrency: Currency;
493		function GetAsInt64: Int64;
#	Line 502 | Line 534 | type
534		IResults = interface
535		['{e836b2bb-93d1-4bbf-a8eb-7ce535de3bb5}']
536		function getCount: integer;
537	+	function GetStatement: IStatement;
538		function GetTransaction: ITransaction;
539		function ByName(Idx: AnsiString): ISQLData;
540		function getSQLData(index: integer): ISQLData;
#	Line 622 | Line 655 | type
655		function getSQLParam(index: integer): ISQLParam;
656		function ByName(Idx: AnsiString): ISQLParam ;
657		function GetModified: Boolean;
658	+	function GetHasCaseSensitiveParams: Boolean;
659		property Modified: Boolean read GetModified;
660		property Params[index: integer]: ISQLParam read getSQLParam; default;
661		property Count: integer read getCount;
#	Line 632 | Line 666 | type
666		psRealTime, psUserTime, psBuffers,
667		psReads, psWrites, psFetches,psDeltaMemory);
668
669	<	TPerfCounters = array[TPerfStats] of comp;
669	>	TPerfCounters = array[TPerfStats] of Int64;
670
671		{The IStatement interface provides access to an SQL Statement once it has been
672		initially prepared. The interface is returned from the IAttachment interface.
#	Line 646 | Line 680 | type
680		function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
681		function GetSQLStatementType: TIBSQLStatementTypes;
682		function GetSQLText: AnsiString;
683	+	function GetProcessedSQLText: AnsiString;
684		function GetSQLDialect: integer;
685		function IsPrepared: boolean;
686		procedure Prepare(aTransaction: ITransaction=nil);
#	Line 773 | Line 808 | type
808		function getAsInteger: integer;
809		procedure DecodeIDCluster(var ConnectionType: integer; var DBFileName, DBSiteName: AnsiString);
810		function getAsBytes: TByteArray;
811	+	function getAsDateTime: TDateTime;
812		procedure DecodeVersionString(var Version: byte; var VersionString: AnsiString);
813		function getOperationCounts: TDBOperationCounts;
814		procedure DecodeUserNames(UserNames: TStrings);
#	Line 799 | Line 835 | type
835		property Items[index: integer]: IDBInfoItem read getItem; default;
836		end;
837
838	+	{The Database Information Request Block is used to pass requests for
839	+	database information where at least one item requested has a parameter.
840	+	At present, this is only fb_info_page_contents which has a single
841	+	integer parameter.}
842	+
843	+	IDIRBItem = interface(IParameterBlockItem)
844	+	['{d34a7511-8435-4a24-81a7-5103d218d234}']
845	+	end;
846	+
847	+	IDIRB = interface(IParameterBlock<IDIRBItem>)
848	+	['{1010e5ac-0a8f-403b-a302-91625e9d9579}']
849	+	end;
850	+
851	+
852		{The Database Parameter Block (DPB).
853
854		The DPB provides the parameters used when connecting to a database. It is allocated
#	Line 847 | Line 897 | type
897
898		IAttachment = interface
899		['{466e9b67-9def-4807-b3e7-e08a35e7185c}']
900	+	function getFirebirdAPI: IFirebirdAPI;
901		function getDPB: IDPB;
902		function AllocateBPB: IBPB;
903	+	function AllocateDIRB: IDIRB;
904		procedure Connect;
905		procedure Disconnect(Force: boolean=false);
906		function IsConnected: boolean;
#	Line 881 | Line 933 | type
933		function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer): IStatement; overload;
934		function Prepare(transaction: ITransaction; sql: AnsiString): IStatement; overload;
935		function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
936	<	aSQLDialect: integer; GenerateParamNames: boolean=false): IStatement; overload;
936	>	aSQLDialect: integer; GenerateParamNames: boolean=false;
937	>	CaseSensitiveParams: boolean = false): IStatement; overload;
938		function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
939	<	GenerateParamNames: boolean=false): IStatement; overload;
939	>	GenerateParamNames: boolean=false;
940	>	CaseSensitiveParams: boolean = false): IStatement; overload;
941
942		{Events}
943		function GetEventHandler(Events: TStrings): IEvents; overload;
#	Line 894 | Line 948 | type
948		function CreateBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BPB: IBPB=nil): IBlob; overload;
949		function CreateBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BPB: IBPB=nil): IBlob; overload;
950		function CreateBlob(transaction: ITransaction; SubType: integer; CharSetID: cardinal=0; BPB: IBPB=nil): IBlob; overload;
951	<	function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;
951	>	function OpenBlob(transaction: ITransaction; RelationName, ColumnName: AnsiString; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob; overload;
952	>	function OpenBlob(transaction: ITransaction; BlobMetaData: IBlobMetaData; BlobID: TISC_QUAD; BPB: IBPB=nil): IBlob;  overload;
953
954		{Array - may use to open existing arrays. However, ISQLData.AsArray is preferred}
955
956	<	function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray;
956	>	function OpenArray(transaction: ITransaction; RelationName, ColumnName: AnsiString; ArrayID: TISC_QUAD): IArray; overload;
957	>	function OpenArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData; ArrayID: TISC_QUAD): IArray; overload;
958		function CreateArray(transaction: ITransaction; RelationName, ColumnName: AnsiString): IArray; overload;
959		function CreateArray(transaction: ITransaction; ArrayMetaData: IArrayMetaData): IArray; overload;
960		function CreateArrayMetaData(SQLType: cardinal; tableName: AnsiString; columnName: AnsiString;
#	Line 911 | Line 967 | type
967		function GetArrayMetaData(Transaction: ITransaction; tableName, columnName: AnsiString): IArrayMetaData;
968		function GetDBInformation(Requests: array of byte): IDBInformation; overload;
969		function GetDBInformation(Request: byte): IDBInformation; overload;
970	+	function GetDBInformation(Requests: IDIRB): IDBInformation; overload;
971		function GetConnectString: AnsiString;
972		function GetRemoteProtocol: AnsiString;
973	+	function GetAuthenticationMethod: AnsiString;
974	+	function GetSecurityDatabase: AnsiString;
975		function GetODSMajorVersion: integer;
976		function GetODSMinorVersion: integer;
977	+	procedure getFBVersion(version: TStrings);
978		function HasActivity: boolean;
979
980		{Character Sets}
#	Line 929 | Line 989 | type
989		AllowReverseLookup:boolean; out CharSetID: integer);
990		end;
991
992	<	TProtocol = (TCP, SPX, NamedPipe, Local);
992	>	TProtocolAll = (TCP, SPX, NamedPipe, Local, inet, inet4, inet6, wnet, xnet, unknownProtocol);
993	>	TProtocol = TCP..xnet;
994
995		{Service Parameter Block (SPB).
996
#	Line 1034 | Line 1095 | type
1095		property Count: integer read getCount;
1096		end;
1097
1098	+	IFirebirdLibrary = interface;
1099	+
1100		{The IServiceManager interface provides access to a service manager. It can
1101		used to Detach and re-attach to Service Manager, to start services and to
1102		query the service manager.
#	Line 1045 | Line 1108 | type
1108
1109		IServiceManager = interface
1110		['{905b587d-1e1f-4e40-a3f8-a3519f852e48}']
1111	+	function getFirebirdAPI: IFirebirdAPI;
1112		function getSPB: ISPB;
1113		function getServerName: AnsiString;
1114	+	function getProtocol: TProtocol;
1115	+	function getPortNo: AnsiString;
1116		procedure Attach;
1117		procedure Detach(Force: boolean=false);
1118		function IsAttached: boolean;
1119		function AllocateSRB: ISRB;
1120		function AllocateSQPB: ISQPB;
1121	<	procedure Start(Request: ISRB);
1122	<	function Query(SQPB: ISQPB; Request: ISRB) :IServiceQueryResults; overload;
1123	<	function Query(Request: ISRB) :IServiceQueryResults; overload;
1121	>	function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
1122	>	function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
1123	>	function Query(Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
1124	>	end;
1125	>
1126	>	{Tbe Firebird Library API used to get information about the Firebird library}
1127	>
1128	>
1129	>	IFirebirdLibrary = interface
1130	>	['{3c04e0a1-12e0-428a-b2e1-bc6fcd97b79b}']
1131	>	function GetHandle: TLibHandle;
1132	>	function GetLibraryName: string;
1133	>	function GetLibraryFilePath: string;
1134	>	function GetFirebirdAPI: IFirebirdAPI;
1135		end;
1136
1137		{The Firebird API.
#	Line 1083 | Line 1160 | type
1160		{Service Manager}
1161		function HasServiceAPI: boolean;
1162		function AllocateSPB: ISPB;
1163	<	function GetServiceManager(ServerName: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager;
1163	>	function GetServiceManager(ServerName: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
1164	>	function GetServiceManager(ServerName: AnsiString; Port: AnsiString; Protocol: TProtocol; SPB: ISPB): IServiceManager; overload;
1165
1166		{Information}
1167		function GetStatus: IStatus;
1090	–	function GetLibraryName: string;
1168		function HasRollbackRetaining: boolean;
1169		function IsEmbeddedServer: boolean;
1170		function GetImplementationVersion: AnsiString;
1171	+	function GetClientMajor: integer;
1172	+	function GetClientMinor: integer;
1173
1174		{Firebird 3 API}
1175		function HasMasterIntf: boolean;
1176		function GetIMaster: TObject;
1177	+	function GetFBLibrary: IFirebirdLibrary;
1178		end;
1179
1180		type
#	Line 1129 | Line 1209 | type
1209		{IB Client Exceptions}
1210		EIBClientError = class(EIBError);
1211
1132	–	{IBError is used internally and by IBX to throw an EIBClientError}
1133	–
1134	–	procedure IBError(ErrMess: TIBClientError; const Args: array of const);
1135	–
1212		{The Firebird API function is used to access the IFirebirdAPI interface.
1213
1214		It will load the Firebird Client Library if this is not already loaded and
#	Line 1147 | Line 1223 | function FirebirdAPI: IFirebirdAPI;
1223		function TryIBLoad: Boolean;
1224		procedure CheckIBLoaded;
1225
1226	+	{If you want to explicitly load the Firebird library from a
1227	+	non-default location then use this function and its GetFirebirdAPI function
1228	+	to get the API.}
1229	+
1230	+	function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary;
1231	+
1232		implementation
1233
1234		uses FBClientAPI
1235		{$IFDEF USELEGACYFIREBIRDAPI}, FB25ClientAPI {$ENDIF}
1236		{$IFDEF USEFIREBIRD3API}, FB30ClientAPI {$ENDIF};
1237
1238	<	var FFirebirdAPI: IFirebirdAPI;
1238	>	var FDefaultFBLibrary: IFirebirdLibrary;
1239	>
1240	>	type
1241	>
1242	>	{ TFBLibrary }
1243	>
1244	>	TFBLibraryImpl = class(TFBLibrary)
1245	>	protected
1246	>	function GetFirebird3API: IFirebirdAPI; override;
1247	>	function GetLegacyFirebirdAPI: IFirebirdAPI; override;
1248	>	end;
1249	>
1250	>	function TFBLibraryImpl.GetFirebird3API: IFirebirdAPI;
1251	>	begin
1252	>	{$IFDEF USEFIREBIRD3API}
1253	>	Result := TFB30ClientAPI.Create(self);
1254	>	{$ELSE}
1255	>	Result := nil;
1256	>	{$ENDIF}
1257	>	end;
1258	>
1259	>	function TFBLibraryImpl.GetLegacyFirebirdAPI: IFirebirdAPI;
1260	>	begin
1261	>	{$IFDEF USELEGACYFIREBIRDAPI}
1262	>	Result := TFB25ClientAPI.Create(self);
1263	>	{$ELSE}
1264	>	Result := nil;
1265	>	{$ENDIF}
1266	>	end;
1267
1268		function FirebirdAPI: IFirebirdAPI;
1269		begin
1270	<	if FFirebirdAPI = nil then
1270	>	if FDefaultFBLibrary = nil then
1271		CheckIBLoaded;
1272	<	Result := FFirebirdAPI;
1272	>	Result := FDefaultFBLibrary.GetFirebirdAPI;
1273		end;
1274
1275		function TryIBLoad: Boolean;
1276	+	var fblib: IFirebirdLibrary;
1277		begin
1278	<	Result := FFirebirdAPI <> nil;
1278	>	Result := FDefaultFBLibrary <> nil;
1279		try
1169	–	{$IFDEF USEFIREBIRD3API}
1170	–	if not Result then
1171	–	begin
1172	–	FFirebirdAPI := TFB30ClientAPI.Create;
1173	–	Result := FFirebirdAPI.HasMasterIntf;
1174	–	end;
1175	–	{$ENDIF}
1176	–	{$IFDEF USELEGACYFIREBIRDAPI}
1280		if not Result then
1281		begin
1282	<	FFirebirdAPI := nil;
1283	<	FFirebirdAPI := TFB25ClientAPI.Create;
1284	<	Result := true;
1285	<	end;
1183	<	{$ENDIF}
1184	<	if Result and not (FFirebirdAPI as TFBClientAPI).IsLibraryLoaded then
1185	<	begin
1186	<	Result := false;
1187	<	FFirebirdAPI := nil;
1282	>	fblib := TFBLibraryImpl.Create;
1283	>	if (fblib <> nil) and (fblib.GetFirebirdAPI <> nil) then
1284	>	FDefaultFBLibrary := fblib;
1285	>	Result := FDefaultFBLibrary <> nil;
1286		end;
1287		except
1288		SysUtils.showexception(ExceptObject,ExceptAddr);
#	Line 1198 | Line 1296 | begin
1296		IBError(ibxeInterBaseMissing, [nil]);
1297		end;
1298
1299	+	function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary;
1300	+	var fblib: IFirebirdLibrary;
1301	+	begin
1302	+	if trim(aLibPathName) = '' then
1303	+	begin
1304	+	CheckIBLoaded;
1305	+	Result := FDefaultFBLibrary;
1306	+	end
1307	+	else
1308	+	begin
1309	+	fblib := TFBLibraryImpl.GetFBLibrary(aLibPathName);
1310	+	if (fblib = nil) or (fblib.GetFirebirdAPI = nil) then
1311	+	IBError(ibxeInterBaseMissing, [nil]);
1312	+	Result := fblib;
1313	+	end;
1314	+	end;
1315	+
1316		{ EIBError }
1317
1318		constructor EIBError.Create(ASQLCode: Long; Msg: AnsiString);
#	Line 1221 | Line 1336 | begin
1336		FIBErrorCode := AIBErrorCode;
1337		end;
1338
1224	–	procedure IBError(ErrMess: TIBClientError; const Args: array of const);
1225	–	begin
1226	–	raise EIBClientError.Create(Ord(ErrMess),
1227	–	Format(GetErrorMessage(ErrMess), Args));
1228	–	end;
1339
1340		initialization
1341	<	FFirebirdAPI := nil;
1341	>	FDefaultFBLibrary := nil;
1342
1343	+	finalization
1344	+	FDefaultFBLibrary := nil;
1345
1346		end.
1347

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