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Revision 45 by tony, Tue Dec 6 10:33:46 2016 UTC vs.
Revision 432 by tony, Sun Jan 7 16:17:19 2024 UTC

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1 + FBINTF Change Log  version          (1.4-2 Build 14183) Thu, 04 Jan 2024 15:12:35 +0000
2 +
3 + 1. IBUtils.FormatTimeZoneOffset A zero offset now includes a preceding '+' sign.
4 +
5 + 2. TFBStatement.DoJournaling now exits immediately if journaling is not active. The
6 +   motivation for this is to avoid calling the Firebird API function 'getInfo'
7 +   unnecesarily. This function can return an error if an incompatible parameter type was
8 +   applied to the statement and hence can confuse resolving the bug. Note: a
9 +   specific case is in (e.g.) OpenCursorAtStart method when the array of const includes a
10 +   TDateTime. In this case, the param is set to a floating point type rather than
11 +   a Firebird datetime (array of const loses the distinction).
12 +
13 + 3. TFBAttachment.SetParameters. if an attempt is made to set a parameter with a float
14 +   value, the metadata type is checked to see if the parameter is a Date/Time type. If so then
15 +   the value is assumed to be a TDateTime and the parameter is set using the AsDateTime
16 +   property. Otherwise, the value is assumed to be a floating point type and the AsDouble
17 +   property is used to set the property. This avoids the specific example given above.
18 +
19 + FBINTF Change Log  version          (1.4-1 Build 14103) Mon, 27 Nov 2023 14:26:35 +0000
20 +
21 + 1. FBSQLData: ensure that TResults.getSQLData and TResults.GetData use same error
22 +   checks for range checking.
23 +
24 + 2. FB25Client: In GetIBMessage, fb_interpret is now called multiple times such that
25 +   any additional error information is decoded.
26 +
27 + 3. FB25Statement: When changing a param type from Blob sub_type 1 to SQL_TEXT or SQL_VARYING
28 +   charsetid is now preserved and size is set to default blob size. Now aligns with
29 +   FB3 and later.
30 +
31 + 4. DDL and DML string literals are now explicitly set to the connection character
32 +   set rather than the default character set provided by the compiler.
33 +
34 + 5. General tidy up of transliteration functions, now centralised in IBUtils. FPC testing
35 +   now makes use of the RTL fpwidestring unit for support of international character
36 +   sets.
37 +
38 + 6. Database exception handling (see section 9.3 in user guide).
39 +    * For FB3 and later API: Connection Character set now applied to message returned
40 +      by fb_interpret and message then transliterated if necessary to the system character set.
41 +    * For Legacy API: The message character set is guessed as UTF8 unless invalid
42 +      UTF8 characters found when connection character set is assumed. Message then
43 +      transliterated if necessary to system character set.
44 +      Note: this difference of behaviour is because legacy API presents exception messages
45 +      "as is", while FB3 server attempts to transliterate to connection character set.
46 +
47 + FBINTF Change Log  version          (1.4-0 Build 14011) Sat, 05 Aug 2023 11:09:09 +0100
48 +
49 + 1. Support package fbudr added for support of User Defined Routines (UDRs), and package
50 +   fbudrtestbed for client side debugging of UDR libraries.
51 +
52 + 2. Package layout changed with introduction of udr support. IB*.pas files moved from
53 +    root directory to "client". IBHeader moved to "Client".
54 +
55 + 3. Delphi packages: all packages now compile .dcp and .bpi files to either
56 +   fbintf\Win32\Debug or fbintf\Win64\Debug by default. Please remove any pre-existing
57 +   fbintf.dcp and fbintf.bpi files from other locations.
58 +
59 + 4. Client side journaling support added. Interface changes
60 +   IAttachment
61 +    function JournalingActive: boolean;
62 +    function GetJournalOptions: TJournalOptions;
63 +    function StartJournaling(aJournalLogFile: AnsiString): integer; overload;
64 +    function StartJournaling(aJournalLogFile: AnsiString; Options: TJournalOptions): integer; overload;
65 +    function StartJournaling(S: TStream; Options: TJournalOptions): integer; overload;
66 +    procedure StopJournaling(RetainJournal: boolean);
67 +
68 + 5. Transactions may now be given a local transaction name:
69 +   IFirebirdAPI
70 +     function StartTransaction(Attachments: array of IAttachment;
71 +             TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
72 +             TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit;
73 +             aName: AnsiString=''): ITransaction; overload;
74 +     function StartTransaction(Attachments: array of IAttachment;
75 +             TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
76 +             TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit;
77 +             aName: AnsiString=''): ITransaction; overload;
78 +
79 +   IAttachment
80 +    function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
81 +    function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
82 +    function StartTransaction(TPB: array of byte;
83 +                              DefaultCompletion: TTransactionCompletion=taCommit;
84 +                              aName: AnsiString=''): ITransaction; overload;
85 +    function StartTransaction(TPB: ITPB;
86 +                              DefaultCompletion: TTransactionCompletion=taCommit;
87 +                              aName: AnsiString=''): ITransaction; overload;
88 +
89 +  ITransaction
90 +    function GetTransactionName: AnsiString;
91 +    procedure SetTransactionName(aValue: AnsiString);
92 +
93 + 6. Additional Transaction information
94 +     ITPB.function AsText: AnsiString; {Returns TPB as a text string}
95 +
96 +   ITransaction
97 +     function GetDefaultCompletion: TTransactionCompletion;
98 +     function GetJournalingActive(attachment: IAttachment): boolean; {attachment must be specified when multi-database transaction}
99 +
100 + 7. New IAttachment helper functions
101 +     function HasTable(aTableName: AnsiString): boolean;
102 +     function HasFunction(aFunctionName: AnsiString): boolean;
103 +     function HasProcedure(aProcName: AnsiString): boolean;
104 +     function GetAttachmentID: integer;
105 +     function GetCharSetID: integer;
106 +
107 + 8. IStatement: if the BatchRowLimit is set to maxint, the maximum possible buffer size
108 +   will be allocated for batch operations.
109 +
110 + 9. IStatement, IColumnMetaData and ISQLParam all now consistently provide:
111 +    function GetStatement: IStatement;
112 +    function GetTransaction: ITransaction;
113 +    function GetAttachment: IAttachment;
114 +
115 + 10. Internal: a more disciplined approach to the handling of Firebird.IReferenceCounted
116 +    interfaces.
117 +
118 + 11. New interface type: IFBNumeric. IFBNumeric is implemented in the unit FBNumeric
119 +    and concentrates all handling of Fixed Point numbers. New ISQLItem and ISQLParam
120 +    functions getAsNumeric and setAsNumeric allow for direct retrival and manipulation
121 +    of numerics without loss of precision.
122 +
123 + 12. TryStrToNumeric and NumericToDouble moved from IBUtils to FBNumeric.
124 +
125 + 13. ISQLParams new method "Clear"
126 +
127 + 14. Connection Info (e.g. ODS Version, Remote Protocol) now retrieved on first
128 +    request rather than on attachment connect.
129 +
130 + 15. IStatus.IBDataBaseErrorMessages now defaults to [ShowIBMessage]. This reflects the
131 +    fact that SQLCodes are soon to be deprecated. In the future, the other options
132 +    will be silently ignored if SQLCode support is not present in the Firebird
133 +    Client library.
134 +
135 + 16. ITransaction changes Rollback and Commit from procedures to functions:
136 +      function Commit(Force: boolean=false): TTrCompletionState;
137 +      function Rollback(Force: boolean=false): TTrCompletionState;
138 +
139 +    Specifically, this is to allow the functions to report back a failed commit or
140 +    rollback when Force = true. In the case, the transaction handle has been
141 +    released, while the transaction remains in limbo.
142 +
143 + 17. IAttachment ExecImmediate.
144 +    When the transaction parameters are provided as an array of const and the
145 +    statement fails, the transaction is rolledback (forced) before the exception
146 +    is raised.
147 +
148 + 18. In Firebird 3 and later API: the status vector is now a thread var, as was
149 +    already the case with the legacy API. Avoids problems when calling underlying
150 +    Firebird API in multiple threads.
151 +
152 + 19. IBUtils: TSQLXMLReader: "string" type changed to "AnsiString" for compatibility
153 +    reasons.
154 +
155 + 20. IDBInformation.DecodeVersionString now supported isc_info_firebird_version.
156 +
157 + 21. TSQLXMLReader: handle 'blob' as a reserved word
158 +
159 + 22. ISQLParam.SetAsVariant now accepts a vartype of varUString (UnicodeString).
160 +
161 +
162 + FBINTF Change Log  version          (1.3-3 Build 12935) Mon, 06 Dec 2021 23:17:13 +0000
163 +
164 + 1. Fix compile error with fpc trunk (3.3.1 and later), due to type change to tzname in "unix" unit.
165 +
166 + 2. Remove constraint in IAttachment.HasScollableCursors that returned false when
167 +   using remote protocol. Scrollable cursors with remote database expected to
168 +   be support for Firebird 4.0.1 onwards. Note: Firebird 4.0.0 will return
169 +   a not supported error.
170 +
171 + 3. IStatement: new function;
172 +    TStatementFlag = (stHasCursor,stRepeatExecute,stScrollable);
173 +    TStatementFlags = set of TStatementFlag;
174 +    function GetFlags: TStatementFlags;
175 +
176 + 4. Revised behaviour for IStatement.ExecuteQuery in order to preserve backwards
177 +   compatibility.
178 +   In Firebird 5, Update..Returning may returns multiple rows and hence the statemen
179 +   type changes from ExecProcedure to Select. So that ExecuteQuery can continue
180 +   to be used with Update...Retruning statements that return a singleton row,
181 +   instead of raising an exception when ExecuteQuery is used with a (SELECT) statement,
182 +   it will open the cursor and return the first row only.
183 +
184 + 5. ITransaction: new functions:
185 +    function GetIsReadOnly: boolean;
186 +    function GetTransactionID: integer;
187 +    function GetTrInformation(Requests: array of byte): ITrInformation; overload;
188 +    function GetTrInformation(Request: byte): ITrInformation; overload;
189 +
190 +   The latter two return the Transaction Information block. The first two extract
191 +   information the Transaction Information block
192 +
193 + 6. New function TSQLTokeniser.ReadCharacters
194 +   Used internally.
195 +
196 + 7. IStatement: GetProcessedSQL bug fix. No longer raises and error if SQL contains
197 +   parameter placeholders instead of named parameters.
198 +
199 + 8. ITransaction (Firebird 3 and later): An exception raised when freeing an underlying
200 +   transaction handle is now ignored if Rollback/Commit is called with Force=true
201 +
202 + 9. Tidy up of exception handling code. Under the legacy API, fb_interpret is now
203 +   used to get an IBError Message instead of isc_interprete.
204 +
205 + 10. Internal tidyup. Native code now used for decoding integers and the events
206 +    buffer. Avoids dependencies on fbclient functions isc_portable_integer,
207 +    isc_event_block and isc_event_counts.
208 +
209 + 11. New IAttachment function
210 +     function GetAttachmentID: integer;
211 +
212 + 12. Internal changes to TFBClientAPI, TFBAttachment and TFBTransaction and TFB30
213 +    subclasses to enable UDR support.
214 +
215 + FBINTF Change Log  version          (1.3-2 Build 12889) Sun, 24 Oct 2021 13:49:28 +0100
216 +
217 + 1. TFBClientAPI.GetProcAddr. Add check for nil reference.
218 +
219 + 2. IStatement: new methods:
220 +    procedure SetStaleReferenceChecks(Enable:boolean); {default true}
221 +    function GetStaleReferenceChecks: boolean;
222 +
223 +   In previous versions, stale reference checks were always enabled. This allows the
224 +   user to disable them on a per statement basis. Note this can risk out-of-date
225 +   statement BLR. See User Guide.
226 +
227 + 3. IBUtils: TSQLwithNamedParamsTokeniser now recognises a CASE...END block within a
228 +   stored procedure and hence avoids replacing named parameters within a containing
229 +   BEGIN..END block.
230 +
231 + 4. ISQLParam: using a string value to set an integer field with a scale factor of
232 +   zero is now treated as a special case to avoid the risk of floating point
233 +   rounding errors affecting pure integers.
234 +
235 + 5. ISQLParam:  Review and tidy-up of SetAsString for numeric types.
236 +
237 + 6. ISQLParam is now subclassed from IParamMetaData, which provides access to the mutable
238 +   SQL Parameter metadata (methods moved from ISQLParam).
239 +
240 + 7. ISQLParam: new method
241 +     function getColMetadata: IParamMetaData;
242 +   This instance of IParamMetaData returns the original column metadata which is unmutable.
243 +   Note: ISQLParam metadata can change after a parameter value has been set e.g when
244 +   setting a VARCHAR column to an integer value.
245 +
246 + 8. IStatement: can now set cursor name when opening a cursor. New overloaded method:
247 +    procedure Prepare(CursorName: AnsiString; aTransaction: ITransaction=nil); overload;
248 +   also IAttachment:
249 +    function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; overload;
250 +    function Prepare(transaction: ITransaction; sql: AnsiString; CursorName: AnsiString=''): IStatement; overload;
251 +    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
252 +                       aSQLDialect: integer; GenerateParamNames: boolean=false;
253 +                       CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
254 +    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
255 +                       GenerateParamNames: boolean=false;
256 +                       CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
257 +
258 + 9. Support for scrollable cursors added. New/updated methods:
259 +   IAttachment:
260 +    function HasScollableCursors: boolean;
261 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
262 +                             Scrollable: boolean=false): IResultSet; overload;
263 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
264 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
265 +                             params: array of const): IResultSet; overload;
266 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false;
267 +                             params: array of const): IResultSet; overload;
268 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
269 +                             params: array of const): IResultSet; overload;
270 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
271 +                             Scrollable: boolean=false): IResultSet; overload;
272 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
273 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean;
274 +                             params: array of const): IResultSet; overload;
275 +    function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
276 +    function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean;
277 +                             params: array of const): IResultSet; overload;
278 +   IStatement:
279 +     function OpenCursor(Scrollable: boolean; CursorName: AnsiString =''; aTransaction: ITransaction=nil): IResultSet; overload;
280 +   IResultSet:
281 +    function FetchPrior: boolean; {fetch previous record}
282 +    function FetchFirst:boolean; {fetch first record}
283 +    function FetchLast: boolean; {fetch last record}
284 +    function FetchAbsolute(position: Integer): boolean; {fetch record by its absolute position in result set}
285 +    function FetchRelative(offset: Integer): boolean; {fetch record by position relative to current}
286 +    function IsBof: boolean;
287 +
288 + 10. IArray: tidyup of SetAsString method to ensure correct handling of fixed point numbers.
289 +
290 + 11. IBUtils: TSQLTokeniser. CRLF now combined by low level parser into sqltEOL token. This
291 +    may be noticeable when a line separator occurs inside quoted text. The quoted text
292 +    output by the tokeniser will now use the platform specific lineEnding regardless
293 +    of whether the input uses the CRLF or LF as a line separator.
294 +
295 + 12. IStatement, IResultsSet: Support for scrollable cursors added (note: local databases only)
296 +
297 +
298 + FBINTF Change Log  version          (1.3-1 Build 12776) Mon, 23 Aug 2021 11:09:33 +0100
299 +
300 + 1. Integer decodes in information blocks (e.g. IDBInfoItem) widened from 32 bit to 64-bit integers.
301 +
302 + 2. Support for inline blob encoding. Blob values pass using the "SetAsString" method
303 +   will now be encoded inline (i.e. as part of the parameter buffer) if they are
304 +   shorter than a pre-set limit. Longer values continue to be saved as blobs as a
305 +   separate server interaction. This is intended as a performance optimisation.
306 +
307 +   The pre-set limit defaults to 8192 bytes and can be inspected/modified using the new
308 +   IAttachment interface functions:
309 +
310 +    function GetInlineBlobLimit: integer;
311 +    procedure SetInlineBlobLimit(limit: integer);
312 +
313 + 3. Support for Firebird 4 IBatch interface added. This is largely transparent to the API
314 +   user as the functionality is embedded in the implementation of the IStatement
315 +   interface. Three new functions are defined:
316 +
317 +    procedure AddToBatch;
318 +    function ExecuteBatch(aTransaction: ITransaction=nil): IBatchCompletion;
319 +    procedure CancelBatch;
320 +    function GetBatchCompletion: IBatchCompletion;
321 +    function GetBatchRowLimit: integer;
322 +    procedure SetBatchRowLimit(aLimit: integer);
323 +
324 +   Also
325 +
326 +    function IsInBatchMode: boolean;        {true after call to execute(eaDefer)}
327 +    function HasBatchMode: boolean;         {true if and only if IBatch Supported}
328 +
329 +   For more information see the User Guide.
330 +
331 + 4. Default error message contents. Now aligned with User Guide section 10.2 i.e. error messages
332 +   provided with the EIBInterBaseError now include all three parts.
333 +
334 + 5. Firebird.pas and include files updated to Firebird 4.0.0
335 +
336 + 6. New IStatement method: function GetSQLStatementTypeName: AnsiString;
337 +   Returns SQL Statement type as a text string;
338 +
339 + 7. ISQLData.AsInteger and AsInt64 now use "Round" to convert a float field to
340 +   an integer instead of "trunc". This is for compatibility with TFloatField.AsInteger.
341 +
342 + FBINTF Change Log  version          (1.2-1 Build 12552) Wed, 09 Jun 2021 13:05:40 +0100
343 +
344 + 1. Big fix for Firebird 4.0. A internal change in Firebird 4.0.0 from RC1 flushed out a
345 +   typo in FB30Statement.pas that caused an unknown parameter error.
346 +
347 + FBINTF Change Log  version          (1.2-0 Build 12520) Fri, 19 Feb 2021 13:27:23 +0000
348 +
349 + 1. Imported (Firebird) constants updated for Firebird 4.
350 +
351 + 2. Firebird.pas from Firebird 4 integrated into source code tree.
352 +
353 + 3. Added Support for TIMETAMP WITH TIME ZONE and TIME WITH TIME ZONE data types.
354 +
355 + 4. Added Support for SQL_DEC16, SQL_DEC34 and extended NUMERIC precision.
356 +
357 + 5. New unit 'FBClientLib.pas' added and provides new interface IFBIMasterProvider.
358 +   QueryInterface may be used to coerce this interface from IFirebirdAPI. The
359 +   interface provides a single method "function GetIMasterIntf: IMaster". This provides
360 +   type safe access to the Firebird IMaster interface and avoids the need to turn
361 +   off object checks when coercing "function GetIMaster: TObject" to IMaster.
362 +
363 + 6. New IFirebirdAPI Calls:
364 +    function HasLocalTZDB: boolean;
365 +    function HasTimeZoneSupport: boolean;
366 +    function HasExtendedTZSupport: boolean;
367 +    procedure SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal; bufptr: PByte);
368 +    function SQLDecFloatDecode(SQLType: cardinal; scale: integer; bufptr: PByte): tBCD;
369 +
370 + 7. New IAttachment Calls:
371 +    function HasDecFloatSupport: boolean;
372 +    function GetTimeZoneServices: ITimeZoneServices;
373 +    function HasTimeZoneSupport: boolean;
374 +
375 + 8. New Interface ITimeZoneServices.
376 +
377 + 9. New ISQLData API Calls:
378 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
379 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
380 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
381 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
382 +    function GetAsUTCDateTime: TDateTime;
383 +    function GetAsBCD: tBCD;
384 +
385 + 10. New ISQLParam API Calls
386 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
387 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
388 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
389 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
390 +    function GetAsUTCDateTime: TDateTime;
391 +    function GetAsBCD: tBCD;
392 +    function GetStatement: IStatement;
393 +    function GetTransaction: ITransaction;
394 +    procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
395 +    procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
396 +    procedure SetAsDateTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
397 +    procedure SetAsDateTime(aValue: TDateTime; aTimeZone: AnsiString); overload;
398 +    procedure SetAsUTCDateTime(aUTCTime: TDateTime);
399 +    procedure SetAsBcd(aValue: tBCD);
400 +
401 + 11. New IArray API Calls
402 +    procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
403 +    procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
404 +    procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
405 +    procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
406 +    function GetAsUTCDateTime(index: array of integer): TDateTime;
407 +    procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
408 +    procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZone: AnsiString); overload;
409 +    procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
410 +    procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
411 +
412 + 12. Utility functions in IBUtils
413 +    function ParseDateTimeTZString(aDateTimeStr: Ansistring; var aDateTime: TDateTime;
414 +              var aTimezone: AnsiString; aFormatSettings: TFormatSettings; TimeOnly: boolean=false): boolean;
415 +    procedure FBDecodeTime(aTime: TDateTime; var Hour, Minute, Second: word; var DeciMillisecond: cardinal);
416 +    function FBEncodeTime(Hour, Minute, Second, DeciMillisecond: cardinal): TDateTime;
417 +    function FBFormatDateTime(fmt: AnsiString; aDateTime: TDateTime): AnsiString;
418 +    function FormatTimeZoneOffset(EffectiveTimeOffsetMins: integer): AnsiString;
419 +    function DecodeTimeZoneOffset(TZOffset: AnsiString; var dstOffset: integer): boolean;
420 +
421 + 13. IDPB, ITPB and ISPB: new interface method
422 +      function AddByTypeName(ParamTypeName: AnsiString): IDPBItem/ITPBItem/ISPBItem;
423 +    This is used to add a parameter block item by the string equivalent of its
424 +    symbolic type name. e.g. DPB.AddByTypeName('isc_dpb_user_name').AsString := '...'
425 +
426 + 14. IDPBItem/ITPBItem/ISPBItem: new interface method:
427 +      function getParamTypeName: AnsiString;
428 +
429 + 15. fb_shutdown now called before unloading Firebird library. This can avoid a
430 +     SIGEVENT error when a programme using the embeded server is unloaded.
431 +
432 + FBINTF Change Log  version          (1.1-6 Build 12237) Tue, 21 Jul 2020 08:54:21 +0100
433 +
434 + 1. GetImplementationVersion now correctly returns '3.0' for Firebird 3 API
435 +   with a Firebrid 3 client library.
436 +
437 + 2. Linux Only: FIREBIRD environment variable is now checked when loading the client library.
438 +    If a client library path is not explicitly provided and the FIREBIRD environment
439 +    variable is set then the directory given by this variable and any 'lib' subdirectory
440 +    are searched for the Firebird client library. Only if none is found, is the default
441 +    client library used.
442 +
443 + 3.  IUtil.FormatStatus now used to format error messages when using new API
444 +
445 + 4.  Fixed Array SDL: array_desc_scale now correctly encoded as a signed integer.
446 +
447 + 5.  SQL_TEXT handling changed. When the value of an SQL_TEXT (i.e. fixed width string) column is
448 +    returned using GetAsString and the string codepage is UTF8, the string is truncated so
449 +    that the byte length corresponds to the number of characters specified for the column.
450 +    SQL_TEXT strings are no longer automatically trimmed to remove all trailing white space. This is
451 +    correct behaviour but may affect some implementations that relied upon automatic
452 +    trimming of trailing white space.
453 +
454 + 6.  New IFirebirdAPI Calls:
455 +      function GetClientMajor: integer;
456 +      function GetClientMinor: integer;
457 +
458 + 7.  IColumnMetaData and IArrayMetaData: new method
459 +      function GetCharSetWidth: integer;
460 +
461 + FBINTF Change Log  version          (1.1-5 Build 12022) Fri, 17 Apr 2020 10:35:55 +0100
462 +
463 + 1. ISQLParams.GetHasCaseSensitiveParams added. Returns true if param names are
464 +   case sensitive
465 +
466 + 2. Single line SQL comments starting with '--' are now recognised by SQL Parser.
467 +
468 + 3. New API Calls:
469 +        IColumnMetaData.GetStatement
470 +        IColumnMetaData.GetTransaction
471 +        ISQLData.GetStrDataLength
472 +        IResults.GetStatement
473 +        IAttachment.OpenBlob (using Blob metadata)
474 +        IAttachment.OpenArray (using array metadata)
475 +
476 + 4. FBMessages: removal of unused messages
477 +
478 + 5. TFBArray.Create (2nd case): ensure that FFirebirdClientAPI is correctly set.
479 +
480 + 6. TIBSQLStatementType: SQLSavePoint added to end of enumeration.
481 +
482 + FBINTF Change Log  version          (1.1-4 Build 11515)  Fri, 28 Dec 2018 10:04:19 +0000
483 +
484 + 1. Fix a problem with the SQL parameter parser that failed to recognise parameters
485 +   where the second character of the parameter name is a numeric.
486 +
487 + 2. New method for IAttachment: procedure getFBVersion(version: TStrings);
488 +   This returns the isc_version connection information as one or more lines.
489 +   This is the same information as returned by isql with the -z option.
490 +
491 + 3. If -dFIREBIRD3APIONLY is used as a compiler option then the legacy Firebird API
492 +   is no longer compiled in. Likewise, if -dLEGACYFIREBIRDAPIONLY is used as a
493 +   compiler option then the Firebird 3 API is no longer compiled in.
494 +
495 + 4. IColumnMetaData: new method.
496 +
497 +   TIBDateTimeFormats = (dfTimestamp, {SQL TIMESTAMP}
498 +                        dfDateTime,   {SQL DATETIME}
499 +                        dfTime);
500 +
501 +   function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
502 +
503 +   This returns the max. number of characters returned by the "AsString" method
504 +   when the SQL type of the column is respectively TIMESTAMP, DATETIME or TIME.
505 +
506 + 5. Additional argument for IAttachment.PrepareWithNamedParameters -
507 +     CaseSensitiveParams: boolean = false
508 +
509 +   If this argument is set to true then SQL parameter names are assumed to be case
510 +   sensitive and must be referenced (using ISQLParams.ByName) using the case
511 +   sensitive name.
512 +
513 + 6. Bug fix: when setting a query parameter, it is now possible, when the parameter
514 +   is of type VarChar or Char to set the parameter to a numeric value (e.g. using
515 +   .AsCurrency) and then subsequently to update the value to a non-numeric string
516 +   using .AsString.
517 +
518 +
519 +
520 + FBINTF Change Log  version                  (1.1-3) Wed, 05 Dec 2018 14:28:10 +0000
521 +
522 + 1. DARWIN only syntax error: fix missing semi-colon in TFBClientAPI.LoadIBLibrary
523 +
524 + 2. Restrict IsMultiThread check to Unix only for compatibility with
525 +   https://bugs.freepascal.org/view.php?id=30535
526 +
527 + 3. New SQL Tokeniser added to IBUtils. This is used to pre-process SQL with
528 +   named parameters and is intended to avoid problems with (e.g.) Execute Block
529 +   and processing internal parameters as statement parameters.
530 +
531 + 4. New interface IFirebirdLibrary provides access to the underlying firebird DLL
532 +   or shared object. Available via a new member (GetFBLibrary) of IFirebirdAPI.
533 +
534 + 5. New function added to IB.pas
535 +
536 +   function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary
537 +
538 +   This allows a Firebird Library to be loaded from an explicit path. use the
539 +   IFirebirdLibrary.GetFirebirdAPI member function to get the Firebird API using
540 +   the library. It is possible to load Firebird libraries from different locations
541 +   simultaneously, each with a distinct IFirebirdAPI.
542 +
543 + FBINTF Change Log  version               (1.1-2) Mon, 16 Apr 2018 09:30:32 +0100
544 +
545 + 1. Firebird.pas: {$OBJECTCHECKS OFF} added to file to avoid runtime error when
546 +   program compiled with -CR command line switch.
547 +
548 + 2. IServiceManager additions (informational):
549 +    function getProtocol: TProtocol;
550 +    function getPortNo: AnsiString;
551 +
552 + 3. IServiceManager improved error handling. Interfaces changed:
553 +    function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
554 +    function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
555 +    function Query(Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
556 +
557 + 4. IAttachment addition (informational)
558 +    function GetSecurityDatabase: AnsiString;
559 +
560 + 5. IStatement: performance counters now updated after each Fetch. GetPerfStatistics
561 +   thus now returns accumulated stats for a select statement from opening a cursor
562 +   up to the last fetch.
563 +
564 + 6. DARWIN: uloadlibrary.inc bug fix. Many thanks to Luigi Naimi for correcting
565 +   the problem.
566 +
567 + 7. Type change: "TPerfCounters = array[TPerfStats] of Int64". Note "Int64"
568 +   replaces deprecated "comp" type.
569 +
570 + 10. Testsuite Test10 updated to include thread synchronisation for event reporting.
571 +
572 + 11. URL Connection Strings: inet4 and inet6 now recognised.
573 +
574 + 12. IBUtils: Parse and Make Connect String now recognise URL style loopback syntax.
575 +
576 + 13. IAttachment.CharSetName2CharSetID is now performed case insensitive.
577 +
578 +
579 + FBINTF Change Log  version (1.1-1) Tue, 27 Feb 2018 16:51:16 +0000
580 +
581 + 1. IBUtils.QuoteIdentifierIfNeeded: Add check for space character.
582 +
583 + 2. IAttachment: add two new methods
584 +     function HasDefaultCharSet: boolean;
585 +     function GetDefaultCharSetID: integer;
586 +
587 +   These return, respectively, true if a connection default character set was
588 +   specified and the character set id of the connection default character set.
589 +   The DefaultCharSetID is cached when the connection is opened and hence does not
590 +   require a database lookup.
591 +
592 + 3. Avoid exception when a text blob is a stored procedure parameter.
593 +
594 + 4. Update test suite to include a test for a stored proc returning a text blob.
595 +
596 + 5. IAttachment: add
597 +      function GetRemoteProtocol: AnsiString;
598 +      function GetODSMajorVersion: integer;
599 +      function GetODSMinorVersion: integer;
600 +      function GetAuthenticationMethod: AnsiString;
601 +
602 +   These results are cached when the connection is opened and hence do not
603 +   require a database lookup.
604 +
605 + 6. IAttachment: add "function GetConnectString: AnsiString;" This returns the
606 +   connect string used to create/connect to the database.
607 +
608 + 7. IAttachment: Create Database using SQL statement. The username and password
609 +   are now extracted and used to populate a DPB made available via IAttachment.getDPB.
610 +   It is now possible to use IAttachment disconnect/connect to reconnect to
611 +   a database for which the initial connection was established by a create
612 +   database sql statement. Available in FPC only.
613 +
614 + 8. Update Test 1 to test 5, 6 and 7 above.
615 +
616 + 9. IBUtils code tidy up.
617 +
618 + 10. Parameter Block interfaces "find" method. As documented, this should have
619 +   returned a nil interface when the item could not be found. Instead, an empty
620 +   interface item was returned. "Find" now works as documented and will return
621 +   a nil interface if the item cannot be found.
622 +
623 + 11. DBInformation: support added for isc_info_active_tran_count and isc_info_creation_date.
624 +
625 + 12. DBInformation: New interfaces: IDIRB and IDIRBItem added to support DB Information
626 +    requests with additional parameters. This is to enable support for fb_info_page_contents
627 +    (return of page contents). Response to fb_info_page_contents returned as
628 +    a string with code page CP_NONE.
629 +
630 + 13. DBInformation: Support for fb_info_pages_used and fb_info_pages_free added, plus
631 +    test suite updated.
632 +
633 + 14. DBInformation: Support for fb_info_crypt_key (Firebird 3.0.3 onwards) added as
634 +    a string type, and fb_info_conn_flags (Firebird 3.0.3 onwards) added as an integer type.
635 +
636 + 15. Service Manager: List of protocols supported expanded to include inet, wnet and xnet.
637 +    An overloaded version of IIFirebirdAPI.GetServiceManager also allows a non
638 +    default connection port to be specified.
639 +
640 + FBINTF Change Log  version                             (1.1-0) Sun, 07 Jan 2018 15:20:02 +0000
641 +
642 + 1. Fix issues with setting SQL Param values using SetAsString with Numeric types.
643 +   Scale is no longer ignored.
644 +
645 + 2. Fix issues with setting SQL Param values using SetAsString with Date values
646 +   not in locale format but which are recognised by Firebird. Date values that
647 +   cannot be converted to a string using Pascal library are now passed through
648 +   to Firebird as Text Strings.
649 +
650 + 3. Lookup character set name by codepage amended to ensure that CP_UTF8 returns
651 +   UTF8 and not UNICODE_FSS.
652 +
653 + 4. Charset ID problem. When using Firebird 3, with no default database character set
654 +   and a column has a non-default collation specified, an incorrect character set
655 +   id was being reported that could result in a 'division by zero' error when
656 +   used by IBX. This has now been fixed.
657 +
658 + 5. Move GetCharsetName, CharSetID2CodePage, CodePage2CharSetID, CharSetName2CharSetID,
659 +   CharSetWidth from IFirebirdAPI to IAttachment. This is a better data model as
660 +   the character sets supported can be updated on a per database basis. That is
661 +   it is possible to add a (Firebird) user defined character set to a database.
662 +
663 + 6. Add RegisterCharSet to IAttachment. This is used to register a user defined character
664 +   set supported by Firebird with the API.
665 +
666 + 7. Add missing isc_info_db_read_only to list of decoded Database Information items
667 +   in FBOutputBlock.pas and update test suite to include this item.
668 +
669 + 8. FB30Client: avoid always using "StartMultiple" when only a single database attachment.
670 +
671 + 9. Loading Windows fbclient.dll: when using the FIREBIRD variable to locate the client
672 +   library or finding it by disk location, the PATH environment variable is now also set to
673 +   include the FIREBIRD directory. This is to ensure that the correct dlls in the
674 +   firebird client library dependencies are loaded.
675 +
676 + 10. Testsuite: Ensure consistent UTF-8 output on Windows console.
677 +
678 + 11. Testsuite: Update Windows script to include FPC 3.0.4 in search path.
679 +
680 + 12. FB30Statement: Protect call to "Move" and avoid calling with a nil pointer
681 +
682 + 13. FB30Statement: A check has been added to ensure that all SQL Parameters
683 +    have been given a value (including NULL). Previously, failing to set the
684 +    value of an SQL Parameter could give rise to unpredictable results or
685 +    an SQLDA error.
686 +
687 + 14. FB30Statement/FB25Statement: Set SQLParam "modified" when string value set.
688 +
689 + 15. FBAttachment: Avoid string reference count error when processing an Ansistring
690 +    parameter in an array of const passed to IAttachment.OpenCursor, etc.
691 +
692 + 16. FBAttachment: Allow for WideString and UnicodeString parameters in an array
693 +    of const passed to IAttachment.OpenCursor, etc.
694 +
695 +
696 + FBINTF Change Log  version             (1.0-2) Sat, 04 Mar 2017 14:43:56 +0000
697 +
698 + 1. Change syntax to Mode Delphi
699 +
700 + 2. Change all uses of string type to explicit AnsiString in order to ensure
701 +   compatibility between Delphi and FPC.
702 +
703 + 3. Various syntax changes to ensure Delphi and FPC compilation including GUIDs
704 +   defined for each interface.
705 +
706 + 4. Generics syntax variations for Delphi added
707 +
708 + 5. PChar replaced with PByte expect where an actual string is being referenced,
709 +   where PAnsiChar is used instead.
710 +
711 + 6. Review of type definitions in IBExternals to ensure Delphi compatibility
712 +
713 + 7. Testsuite updated for Delphi
714 +
715 + FBINTF Change Log  version            (1.0-1) Fri, 24 Feb 2017 12:17:57 +0000
716 +
717 + 1. Limit maximum Blob segment read/write to MaxuShort. Avoids data loss with
718 +   large blobs and the FB3 API.
719 +
720 + 2. Update Event Handling algorithm to avoid looping due to recreation of the
721 +   event block.
722 +
723 + 3. Avoid invalid XSQLDA error when the only parameter is updated to null
724 +
725 + 4. Array Handling: fix problem with text arrays with character set none. When the
726 +   DB connection has a default character set (e.g. UTF8), an error is raised by
727 +   Firebird if the space allocated is not enough to allow for transliteration, even
728 +   though it is not required for character set none.
729 +
730 + 5. IBUtils: List of reserved words brought up-to-date
731 +
732 + 6. Add ISQL style performance statistics collection to IStatement
733 +
734 + 7. Add IFirebirdAPI.CreateDatabase variant to allow execution of user provided
735 +   CREATE DATABASE statement.
736 +
737 + 8. Update SQL Statement parsing to allow for Array Dimensions. That is so that the ':' in
738 +   an array dimension is not mistaken for a named parameter prefix.
739 +
740 + 9. Trim function no longer applied to result of GetAsString for SQL_TEXT
741 +   when Character set is octets. Avoids loss of non printable characters at start of string.
742 +
743 + 10. Add function GetPerfStatistics to IStatement. This returns ISQL like performance
744 +    statistics for the last action. Requires use of procedure IStatement.EnableStatistics
745 +    to enable stats gathering.
746 +
747 + 11. API Version information added as constants to IB.pas
748 +
749 + 12. BlobMetaData character set id should now be the same as that given by IColumnMetaData.GetCharSetID
750 +
751 + 13. Firebird Character set "NONE" now interpreted as codepage CP_ACP.
752 +
753   FBINTF Change Log  version                                      (1.0-0) Tue, 06 Dec 2016 10:33:47 +0000
754  
755   1. Initial Release

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