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Revision 45 by tony, Tue Dec 6 10:33:46 2016 UTC vs.
Revision 402 by tony, Mon Aug 1 10:07:24 2022 UTC

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1 + FBINTF Change Log  version          (1.4-0 Build 13871) Fri, 29 Jul 2022 23:29:51 +0100
2 +
3 + 1. Support package fbudr added for support of User Defined Routines (UDRs), and package
4 +   fbudrtestbed for client side debugging of UDR libraries.
5 +
6 + 2. Package layout changed with introduction of udr support. IB*.pas files moved from
7 +    root directory to "client". IBHeader moved to "Client".
8 +
9 + 3. Delphi packages: all packages now compile .dcp and .bpi files to either
10 +   fbintf\Win32\Debug or fbintf\Win64\Debug by default. Please remove any pre-existing
11 +   fbintf.dcp and fbintf.bpi files from other locations.
12 +
13 + 4. Client side journaling support added. Interface changes
14 +   IAttachment
15 +    function JournalingActive: boolean;
16 +    function GetJournalOptions: TJournalOptions;
17 +    function StartJournaling(aJournalLogFile: AnsiString): integer; overload;
18 +    function StartJournaling(aJournalLogFile: AnsiString; Options: TJournalOptions): integer; overload;
19 +    function StartJournaling(S: TStream; Options: TJournalOptions): integer; overload;
20 +    procedure StopJournaling(RetainJournal: boolean);
21 +
22 + 5. Transactions may now be given a local transaction name:
23 +   IFirebirdAPI
24 +     function StartTransaction(Attachments: array of IAttachment;
25 +             TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
26 +             TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit;
27 +             aName: AnsiString=''): ITransaction; overload;
28 +     function StartTransaction(Attachments: array of IAttachment;
29 +             TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
30 +             TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit;
31 +             aName: AnsiString=''): ITransaction; overload;
32 +
33 +   IAttachment
34 +    function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
35 +    function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
36 +    function StartTransaction(TPB: array of byte;
37 +                              DefaultCompletion: TTransactionCompletion=taCommit;
38 +                              aName: AnsiString=''): ITransaction; overload;
39 +    function StartTransaction(TPB: ITPB;
40 +                              DefaultCompletion: TTransactionCompletion=taCommit;
41 +                              aName: AnsiString=''): ITransaction; overload;
42 +
43 +  ITransaction
44 +    function GetTransactionName: AnsiString;
45 +    procedure SetTransactionName(aValue: AnsiString);
46 +
47 + 6. Additional Transaction information
48 +     ITPB.function AsText: AnsiString; {Returns TPB as a text string}
49 +
50 +   ITransaction
51 +     function GetDefaultCompletion: TTransactionCompletion;
52 +     function GetJournalingActive(attachment: IAttachment): boolean; {attachment must be specified when multi-database transaction}
53 +
54 + 7. New IAttachment helper functions
55 +     function HasTable(aTableName: AnsiString): boolean;
56 +     function HasFunction(aFunctionName: AnsiString): boolean;
57 +     function HasProcedure(aProcName: AnsiString): boolean;
58 +     function GetAttachmentID: integer;
59 +     function GetCharSetID: integer;
60 +
61 + 8. IStatement: if the BatchRowLimit is set to maxint, the maximum possible buffer size
62 +   will be allocated for batch operations.
63 +
64 + 9. IStatement, IColumnMetaData and ISQLParam all now consistently provide:
65 +    function GetStatement: IStatement;
66 +    function GetTransaction: ITransaction;
67 +    function GetAttachment: IAttachment;
68 +
69 + 10. Internal: a more disciplined approach to the handling of Firebird.IReferenceCounted
70 +    interfaces.
71 +
72 + 11. New interface type: IFBNumeric. IFBNumeric is implemented in the unit FBNumeric
73 +    and concentrates all handling of Fixed Point numbers. New ISQLItem and ISQLParam
74 +    functions getAsNumeric and setAsNumeric allow for direct retrival and manipulation
75 +    of numerics without loss of precision.
76 +
77 + 12. TryStrToNumeric and NumericToDouble moved from IBUtils to FBNumeric.
78 +
79 + 13. ISQLParams new method "Clear"
80 +
81 + 14. Connection Info (e.g. ODS Version, Remote Protocol) now retrieved on first
82 +    request rather than on attachment connect.
83 +
84 + 15. IStatus.IBDataBaseErrorMessages now defaults to [ShowIBMessage]. This reflects the
85 +    fact that SQLCodes are soon to be deprecated. In the future, the other options
86 +    will be silently ignored if SQLCode support is not present in the Firebird
87 +    Client library.
88 +
89 + 16. ITransaction changes Rollback and Commit from procedures to functions:
90 +      function Commit(Force: boolean=false): TTrCompletionState;
91 +      function Rollback(Force: boolean=false): TTrCompletionState;
92 +
93 +    Specifically, this is to allow the functions to report back a failed commit or
94 +    rollback when Force = true. In the case, the transaction handle has been
95 +    released, while the transaction remains in limbo.
96 +
97 + 17. IAttachment ExecImmediate.
98 +    When the transaction parameters are provided as an array of const and the
99 +    statement fails, the transaction is rolledback (forced) before the exception
100 +    is raised.
101 +
102 + 18. In Firebird 3 and later API: the status vector is now a thread var, as was
103 +    already the case with the legacy API. Avoids problems when calling underlying
104 +    Firebird API in multiple threads.
105 +
106 + 19. IBUtils: TSQLXMLReader: "string" type changed to "AnsiString" for compatibility
107 +    reasons.
108 +
109 + 20. IDBInformation.DecodeVersionString now supported isc_info_firebird_version.
110 +
111 + 21. TSQLXMLReader: handle 'blob' as a reserved word
112 +
113 + 22. ISQLParam.SetAsVariant now accepts a vartype of varUString (UnicodeString).
114 +
115 +
116 + FBINTF Change Log  version          (1.3-3 Build 12935) Mon, 06 Dec 2021 23:17:13 +0000
117 +
118 + 1. Fix compile error with fpc trunk (3.3.1 and later), due to type change to tzname in "unix" unit.
119 +
120 + 2. Remove constraint in IAttachment.HasScollableCursors that returned false when
121 +   using remote protocol. Scrollable cursors with remote database expected to
122 +   be support for Firebird 4.0.1 onwards. Note: Firebird 4.0.0 will return
123 +   a not supported error.
124 +
125 + 3. IStatement: new function;
126 +    TStatementFlag = (stHasCursor,stRepeatExecute,stScrollable);
127 +    TStatementFlags = set of TStatementFlag;
128 +    function GetFlags: TStatementFlags;
129 +
130 + 4. Revised behaviour for IStatement.ExecuteQuery in order to preserve backwards
131 +   compatibility.
132 +   In Firebird 5, Update..Returning may returns multiple rows and hence the statemen
133 +   type changes from ExecProcedure to Select. So that ExecuteQuery can continue
134 +   to be used with Update...Retruning statements that return a singleton row,
135 +   instead of raising an exception when ExecuteQuery is used with a (SELECT) statement,
136 +   it will open the cursor and return the first row only.
137 +
138 + 5. ITransaction: new functions:
139 +    function GetIsReadOnly: boolean;
140 +    function GetTransactionID: integer;
141 +    function GetTrInformation(Requests: array of byte): ITrInformation; overload;
142 +    function GetTrInformation(Request: byte): ITrInformation; overload;
143 +
144 +   The latter two return the Transaction Information block. The first two extract
145 +   information the Transaction Information block
146 +
147 + 6. New function TSQLTokeniser.ReadCharacters
148 +   Used internally.
149 +
150 + 7. IStatement: GetProcessedSQL bug fix. No longer raises and error if SQL contains
151 +   parameter placeholders instead of named parameters.
152 +
153 + 8. ITransaction (Firebird 3 and later): An exception raised when freeing an underlying
154 +   transaction handle is now ignored if Rollback/Commit is called with Force=true
155 +
156 + 9. Tidy up of exception handling code. Under the legacy API, fb_interpret is now
157 +   used to get an IBError Message instead of isc_interprete.
158 +
159 + 10. Internal tidyup. Native code now used for decoding integers and the events
160 +    buffer. Avoids dependencies on fbclient functions isc_portable_integer,
161 +    isc_event_block and isc_event_counts.
162 +
163 + 11. New IAttachment function
164 +     function GetAttachmentID: integer;
165 +
166 + 12. Internal changes to TFBClientAPI, TFBAttachment and TFBTransaction and TFB30
167 +    subclasses to enable UDR support.
168 +
169 + FBINTF Change Log  version          (1.3-2 Build 12889) Sun, 24 Oct 2021 13:49:28 +0100
170 +
171 + 1. TFBClientAPI.GetProcAddr. Add check for nil reference.
172 +
173 + 2. IStatement: new methods:
174 +    procedure SetStaleReferenceChecks(Enable:boolean); {default true}
175 +    function GetStaleReferenceChecks: boolean;
176 +
177 +   In previous versions, stale reference checks were always enabled. This allows the
178 +   user to disable them on a per statement basis. Note this can risk out-of-date
179 +   statement BLR. See User Guide.
180 +
181 + 3. IBUtils: TSQLwithNamedParamsTokeniser now recognises a CASE...END block within a
182 +   stored procedure and hence avoids replacing named parameters within a containing
183 +   BEGIN..END block.
184 +
185 + 4. ISQLParam: using a string value to set an integer field with a scale factor of
186 +   zero is now treated as a special case to avoid the risk of floating point
187 +   rounding errors affecting pure integers.
188 +
189 + 5. ISQLParam:  Review and tidy-up of SetAsString for numeric types.
190 +
191 + 6. ISQLParam is now subclassed from IParamMetaData, which provides access to the mutable
192 +   SQL Parameter metadata (methods moved from ISQLParam).
193 +
194 + 7. ISQLParam: new method
195 +     function getColMetadata: IParamMetaData;
196 +   This instance of IParamMetaData returns the original column metadata which is unmutable.
197 +   Note: ISQLParam metadata can change after a parameter value has been set e.g when
198 +   setting a VARCHAR column to an integer value.
199 +
200 + 8. IStatement: can now set cursor name when opening a cursor. New overloaded method:
201 +    procedure Prepare(CursorName: AnsiString; aTransaction: ITransaction=nil); overload;
202 +   also IAttachment:
203 +    function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; overload;
204 +    function Prepare(transaction: ITransaction; sql: AnsiString; CursorName: AnsiString=''): IStatement; overload;
205 +    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
206 +                       aSQLDialect: integer; GenerateParamNames: boolean=false;
207 +                       CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
208 +    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
209 +                       GenerateParamNames: boolean=false;
210 +                       CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
211 +
212 + 9. Support for scrollable cursors added. New/updated methods:
213 +   IAttachment:
214 +    function HasScollableCursors: boolean;
215 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
216 +                             Scrollable: boolean=false): IResultSet; overload;
217 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
218 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
219 +                             params: array of const): IResultSet; overload;
220 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false;
221 +                             params: array of const): IResultSet; overload;
222 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
223 +                             params: array of const): IResultSet; overload;
224 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
225 +                             Scrollable: boolean=false): IResultSet; overload;
226 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
227 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean;
228 +                             params: array of const): IResultSet; overload;
229 +    function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
230 +    function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean;
231 +                             params: array of const): IResultSet; overload;
232 +   IStatement:
233 +     function OpenCursor(Scrollable: boolean; CursorName: AnsiString =''; aTransaction: ITransaction=nil): IResultSet; overload;
234 +   IResultSet:
235 +    function FetchPrior: boolean; {fetch previous record}
236 +    function FetchFirst:boolean; {fetch first record}
237 +    function FetchLast: boolean; {fetch last record}
238 +    function FetchAbsolute(position: Integer): boolean; {fetch record by its absolute position in result set}
239 +    function FetchRelative(offset: Integer): boolean; {fetch record by position relative to current}
240 +    function IsBof: boolean;
241 +
242 + 10. IArray: tidyup of SetAsString method to ensure correct handling of fixed point numbers.
243 +
244 + 11. IBUtils: TSQLTokeniser. CRLF now combined by low level parser into sqltEOL token. This
245 +    may be noticeable when a line separator occurs inside quoted text. The quoted text
246 +    output by the tokeniser will now use the platform specific lineEnding regardless
247 +    of whether the input uses the CRLF or LF as a line separator.
248 +
249 + 12. IStatement, IResultsSet: Support for scrollable cursors added (note: local databases only)
250 +
251 +
252 + FBINTF Change Log  version          (1.3-1 Build 12776) Mon, 23 Aug 2021 11:09:33 +0100
253 +
254 + 1. Integer decodes in information blocks (e.g. IDBInfoItem) widened from 32 bit to 64-bit integers.
255 +
256 + 2. Support for inline blob encoding. Blob values pass using the "SetAsString" method
257 +   will now be encoded inline (i.e. as part of the parameter buffer) if they are
258 +   shorter than a pre-set limit. Longer values continue to be saved as blobs as a
259 +   separate server interaction. This is intended as a performance optimisation.
260 +
261 +   The pre-set limit defaults to 8192 bytes and can be inspected/modified using the new
262 +   IAttachment interface functions:
263 +
264 +    function GetInlineBlobLimit: integer;
265 +    procedure SetInlineBlobLimit(limit: integer);
266 +
267 + 3. Support for Firebird 4 IBatch interface added. This is largely transparent to the API
268 +   user as the functionality is embedded in the implementation of the IStatement
269 +   interface. Three new functions are defined:
270 +
271 +    procedure AddToBatch;
272 +    function ExecuteBatch(aTransaction: ITransaction=nil): IBatchCompletion;
273 +    procedure CancelBatch;
274 +    function GetBatchCompletion: IBatchCompletion;
275 +    function GetBatchRowLimit: integer;
276 +    procedure SetBatchRowLimit(aLimit: integer);
277 +
278 +   Also
279 +
280 +    function IsInBatchMode: boolean;        {true after call to execute(eaDefer)}
281 +    function HasBatchMode: boolean;         {true if and only if IBatch Supported}
282 +
283 +   For more information see the User Guide.
284 +
285 + 4. Default error message contents. Now aligned with User Guide section 10.2 i.e. error messages
286 +   provided with the EIBInterBaseError now include all three parts.
287 +
288 + 5. Firebird.pas and include files updated to Firebird 4.0.0
289 +
290 + 6. New IStatement method: function GetSQLStatementTypeName: AnsiString;
291 +   Returns SQL Statement type as a text string;
292 +
293 + 7. ISQLData.AsInteger and AsInt64 now use "Round" to convert a float field to
294 +   an integer instead of "trunc". This is for compatibility with TFloatField.AsInteger.
295 +
296 + FBINTF Change Log  version          (1.2-1 Build 12552) Wed, 09 Jun 2021 13:05:40 +0100
297 +
298 + 1. Big fix for Firebird 4.0. A internal change in Firebird 4.0.0 from RC1 flushed out a
299 +   typo in FB30Statement.pas that caused an unknown parameter error.
300 +
301 + FBINTF Change Log  version          (1.2-0 Build 12520) Fri, 19 Feb 2021 13:27:23 +0000
302 +
303 + 1. Imported (Firebird) constants updated for Firebird 4.
304 +
305 + 2. Firebird.pas from Firebird 4 integrated into source code tree.
306 +
307 + 3. Added Support for TIMETAMP WITH TIME ZONE and TIME WITH TIME ZONE data types.
308 +
309 + 4. Added Support for SQL_DEC16, SQL_DEC34 and extended NUMERIC precision.
310 +
311 + 5. New unit 'FBClientLib.pas' added and provides new interface IFBIMasterProvider.
312 +   QueryInterface may be used to coerce this interface from IFirebirdAPI. The
313 +   interface provides a single method "function GetIMasterIntf: IMaster". This provides
314 +   type safe access to the Firebird IMaster interface and avoids the need to turn
315 +   off object checks when coercing "function GetIMaster: TObject" to IMaster.
316 +
317 + 6. New IFirebirdAPI Calls:
318 +    function HasLocalTZDB: boolean;
319 +    function HasTimeZoneSupport: boolean;
320 +    function HasExtendedTZSupport: boolean;
321 +    procedure SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal; bufptr: PByte);
322 +    function SQLDecFloatDecode(SQLType: cardinal; scale: integer; bufptr: PByte): tBCD;
323 +
324 + 7. New IAttachment Calls:
325 +    function HasDecFloatSupport: boolean;
326 +    function GetTimeZoneServices: ITimeZoneServices;
327 +    function HasTimeZoneSupport: boolean;
328 +
329 + 8. New Interface ITimeZoneServices.
330 +
331 + 9. New ISQLData API Calls:
332 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
333 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
334 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
335 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
336 +    function GetAsUTCDateTime: TDateTime;
337 +    function GetAsBCD: tBCD;
338 +
339 + 10. New ISQLParam API Calls
340 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
341 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
342 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
343 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
344 +    function GetAsUTCDateTime: TDateTime;
345 +    function GetAsBCD: tBCD;
346 +    function GetStatement: IStatement;
347 +    function GetTransaction: ITransaction;
348 +    procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
349 +    procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
350 +    procedure SetAsDateTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
351 +    procedure SetAsDateTime(aValue: TDateTime; aTimeZone: AnsiString); overload;
352 +    procedure SetAsUTCDateTime(aUTCTime: TDateTime);
353 +    procedure SetAsBcd(aValue: tBCD);
354 +
355 + 11. New IArray API Calls
356 +    procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
357 +    procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
358 +    procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
359 +    procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
360 +    function GetAsUTCDateTime(index: array of integer): TDateTime;
361 +    procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
362 +    procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZone: AnsiString); overload;
363 +    procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
364 +    procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
365 +
366 + 12. Utility functions in IBUtils
367 +    function ParseDateTimeTZString(aDateTimeStr: Ansistring; var aDateTime: TDateTime;
368 +              var aTimezone: AnsiString; aFormatSettings: TFormatSettings; TimeOnly: boolean=false): boolean;
369 +    procedure FBDecodeTime(aTime: TDateTime; var Hour, Minute, Second: word; var DeciMillisecond: cardinal);
370 +    function FBEncodeTime(Hour, Minute, Second, DeciMillisecond: cardinal): TDateTime;
371 +    function FBFormatDateTime(fmt: AnsiString; aDateTime: TDateTime): AnsiString;
372 +    function FormatTimeZoneOffset(EffectiveTimeOffsetMins: integer): AnsiString;
373 +    function DecodeTimeZoneOffset(TZOffset: AnsiString; var dstOffset: integer): boolean;
374 +
375 + 13. IDPB, ITPB and ISPB: new interface method
376 +      function AddByTypeName(ParamTypeName: AnsiString): IDPBItem/ITPBItem/ISPBItem;
377 +    This is used to add a parameter block item by the string equivalent of its
378 +    symbolic type name. e.g. DPB.AddByTypeName('isc_dpb_user_name').AsString := '...'
379 +
380 + 14. IDPBItem/ITPBItem/ISPBItem: new interface method:
381 +      function getParamTypeName: AnsiString;
382 +
383 + 15. fb_shutdown now called before unloading Firebird library. This can avoid a
384 +     SIGEVENT error when a programme using the embeded server is unloaded.
385 +
386 + FBINTF Change Log  version          (1.1-6 Build 12237) Tue, 21 Jul 2020 08:54:21 +0100
387 +
388 + 1. GetImplementationVersion now correctly returns '3.0' for Firebird 3 API
389 +   with a Firebrid 3 client library.
390 +
391 + 2. Linux Only: FIREBIRD environment variable is now checked when loading the client library.
392 +    If a client library path is not explicitly provided and the FIREBIRD environment
393 +    variable is set then the directory given by this variable and any 'lib' subdirectory
394 +    are searched for the Firebird client library. Only if none is found, is the default
395 +    client library used.
396 +
397 + 3.  IUtil.FormatStatus now used to format error messages when using new API
398 +
399 + 4.  Fixed Array SDL: array_desc_scale now correctly encoded as a signed integer.
400 +
401 + 5.  SQL_TEXT handling changed. When the value of an SQL_TEXT (i.e. fixed width string) column is
402 +    returned using GetAsString and the string codepage is UTF8, the string is truncated so
403 +    that the byte length corresponds to the number of characters specified for the column.
404 +    SQL_TEXT strings are no longer automatically trimmed to remove all trailing white space. This is
405 +    correct behaviour but may affect some implementations that relied upon automatic
406 +    trimming of trailing white space.
407 +
408 + 6.  New IFirebirdAPI Calls:
409 +      function GetClientMajor: integer;
410 +      function GetClientMinor: integer;
411 +
412 + 7.  IColumnMetaData and IArrayMetaData: new method
413 +      function GetCharSetWidth: integer;
414 +
415 + FBINTF Change Log  version          (1.1-5 Build 12022) Fri, 17 Apr 2020 10:35:55 +0100
416 +
417 + 1. ISQLParams.GetHasCaseSensitiveParams added. Returns true if param names are
418 +   case sensitive
419 +
420 + 2. Single line SQL comments starting with '--' are now recognised by SQL Parser.
421 +
422 + 3. New API Calls:
423 +        IColumnMetaData.GetStatement
424 +        IColumnMetaData.GetTransaction
425 +        ISQLData.GetStrDataLength
426 +        IResults.GetStatement
427 +        IAttachment.OpenBlob (using Blob metadata)
428 +        IAttachment.OpenArray (using array metadata)
429 +
430 + 4. FBMessages: removal of unused messages
431 +
432 + 5. TFBArray.Create (2nd case): ensure that FFirebirdClientAPI is correctly set.
433 +
434 + 6. TIBSQLStatementType: SQLSavePoint added to end of enumeration.
435 +
436 + FBINTF Change Log  version          (1.1-4 Build 11515)  Fri, 28 Dec 2018 10:04:19 +0000
437 +
438 + 1. Fix a problem with the SQL parameter parser that failed to recognise parameters
439 +   where the second character of the parameter name is a numeric.
440 +
441 + 2. New method for IAttachment: procedure getFBVersion(version: TStrings);
442 +   This returns the isc_version connection information as one or more lines.
443 +   This is the same information as returned by isql with the -z option.
444 +
445 + 3. If -dFIREBIRD3APIONLY is used as a compiler option then the legacy Firebird API
446 +   is no longer compiled in. Likewise, if -dLEGACYFIREBIRDAPIONLY is used as a
447 +   compiler option then the Firebird 3 API is no longer compiled in.
448 +
449 + 4. IColumnMetaData: new method.
450 +
451 +   TIBDateTimeFormats = (dfTimestamp, {SQL TIMESTAMP}
452 +                        dfDateTime,   {SQL DATETIME}
453 +                        dfTime);
454 +
455 +   function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
456 +
457 +   This returns the max. number of characters returned by the "AsString" method
458 +   when the SQL type of the column is respectively TIMESTAMP, DATETIME or TIME.
459 +
460 + 5. Additional argument for IAttachment.PrepareWithNamedParameters -
461 +     CaseSensitiveParams: boolean = false
462 +
463 +   If this argument is set to true then SQL parameter names are assumed to be case
464 +   sensitive and must be referenced (using ISQLParams.ByName) using the case
465 +   sensitive name.
466 +
467 + 6. Bug fix: when setting a query parameter, it is now possible, when the parameter
468 +   is of type VarChar or Char to set the parameter to a numeric value (e.g. using
469 +   .AsCurrency) and then subsequently to update the value to a non-numeric string
470 +   using .AsString.
471 +
472 +
473 +
474 + FBINTF Change Log  version                  (1.1-3) Wed, 05 Dec 2018 14:28:10 +0000
475 +
476 + 1. DARWIN only syntax error: fix missing semi-colon in TFBClientAPI.LoadIBLibrary
477 +
478 + 2. Restrict IsMultiThread check to Unix only for compatibility with
479 +   https://bugs.freepascal.org/view.php?id=30535
480 +
481 + 3. New SQL Tokeniser added to IBUtils. This is used to pre-process SQL with
482 +   named parameters and is intended to avoid problems with (e.g.) Execute Block
483 +   and processing internal parameters as statement parameters.
484 +
485 + 4. New interface IFirebirdLibrary provides access to the underlying firebird DLL
486 +   or shared object. Available via a new member (GetFBLibrary) of IFirebirdAPI.
487 +
488 + 5. New function added to IB.pas
489 +
490 +   function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary
491 +
492 +   This allows a Firebird Library to be loaded from an explicit path. use the
493 +   IFirebirdLibrary.GetFirebirdAPI member function to get the Firebird API using
494 +   the library. It is possible to load Firebird libraries from different locations
495 +   simultaneously, each with a distinct IFirebirdAPI.
496 +
497 + FBINTF Change Log  version               (1.1-2) Mon, 16 Apr 2018 09:30:32 +0100
498 +
499 + 1. Firebird.pas: {$OBJECTCHECKS OFF} added to file to avoid runtime error when
500 +   program compiled with -CR command line switch.
501 +
502 + 2. IServiceManager additions (informational):
503 +    function getProtocol: TProtocol;
504 +    function getPortNo: AnsiString;
505 +
506 + 3. IServiceManager improved error handling. Interfaces changed:
507 +    function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
508 +    function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
509 +    function Query(Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
510 +
511 + 4. IAttachment addition (informational)
512 +    function GetSecurityDatabase: AnsiString;
513 +
514 + 5. IStatement: performance counters now updated after each Fetch. GetPerfStatistics
515 +   thus now returns accumulated stats for a select statement from opening a cursor
516 +   up to the last fetch.
517 +
518 + 6. DARWIN: uloadlibrary.inc bug fix. Many thanks to Luigi Naimi for correcting
519 +   the problem.
520 +
521 + 7. Type change: "TPerfCounters = array[TPerfStats] of Int64". Note "Int64"
522 +   replaces deprecated "comp" type.
523 +
524 + 10. Testsuite Test10 updated to include thread synchronisation for event reporting.
525 +
526 + 11. URL Connection Strings: inet4 and inet6 now recognised.
527 +
528 + 12. IBUtils: Parse and Make Connect String now recognise URL style loopback syntax.
529 +
530 + 13. IAttachment.CharSetName2CharSetID is now performed case insensitive.
531 +
532 +
533 + FBINTF Change Log  version (1.1-1) Tue, 27 Feb 2018 16:51:16 +0000
534 +
535 + 1. IBUtils.QuoteIdentifierIfNeeded: Add check for space character.
536 +
537 + 2. IAttachment: add two new methods
538 +     function HasDefaultCharSet: boolean;
539 +     function GetDefaultCharSetID: integer;
540 +
541 +   These return, respectively, true if a connection default character set was
542 +   specified and the character set id of the connection default character set.
543 +   The DefaultCharSetID is cached when the connection is opened and hence does not
544 +   require a database lookup.
545 +
546 + 3. Avoid exception when a text blob is a stored procedure parameter.
547 +
548 + 4. Update test suite to include a test for a stored proc returning a text blob.
549 +
550 + 5. IAttachment: add
551 +      function GetRemoteProtocol: AnsiString;
552 +      function GetODSMajorVersion: integer;
553 +      function GetODSMinorVersion: integer;
554 +      function GetAuthenticationMethod: AnsiString;
555 +
556 +   These results are cached when the connection is opened and hence do not
557 +   require a database lookup.
558 +
559 + 6. IAttachment: add "function GetConnectString: AnsiString;" This returns the
560 +   connect string used to create/connect to the database.
561 +
562 + 7. IAttachment: Create Database using SQL statement. The username and password
563 +   are now extracted and used to populate a DPB made available via IAttachment.getDPB.
564 +   It is now possible to use IAttachment disconnect/connect to reconnect to
565 +   a database for which the initial connection was established by a create
566 +   database sql statement. Available in FPC only.
567 +
568 + 8. Update Test 1 to test 5, 6 and 7 above.
569 +
570 + 9. IBUtils code tidy up.
571 +
572 + 10. Parameter Block interfaces "find" method. As documented, this should have
573 +   returned a nil interface when the item could not be found. Instead, an empty
574 +   interface item was returned. "Find" now works as documented and will return
575 +   a nil interface if the item cannot be found.
576 +
577 + 11. DBInformation: support added for isc_info_active_tran_count and isc_info_creation_date.
578 +
579 + 12. DBInformation: New interfaces: IDIRB and IDIRBItem added to support DB Information
580 +    requests with additional parameters. This is to enable support for fb_info_page_contents
581 +    (return of page contents). Response to fb_info_page_contents returned as
582 +    a string with code page CP_NONE.
583 +
584 + 13. DBInformation: Support for fb_info_pages_used and fb_info_pages_free added, plus
585 +    test suite updated.
586 +
587 + 14. DBInformation: Support for fb_info_crypt_key (Firebird 3.0.3 onwards) added as
588 +    a string type, and fb_info_conn_flags (Firebird 3.0.3 onwards) added as an integer type.
589 +
590 + 15. Service Manager: List of protocols supported expanded to include inet, wnet and xnet.
591 +    An overloaded version of IIFirebirdAPI.GetServiceManager also allows a non
592 +    default connection port to be specified.
593 +
594 + FBINTF Change Log  version                             (1.1-0) Sun, 07 Jan 2018 15:20:02 +0000
595 +
596 + 1. Fix issues with setting SQL Param values using SetAsString with Numeric types.
597 +   Scale is no longer ignored.
598 +
599 + 2. Fix issues with setting SQL Param values using SetAsString with Date values
600 +   not in locale format but which are recognised by Firebird. Date values that
601 +   cannot be converted to a string using Pascal library are now passed through
602 +   to Firebird as Text Strings.
603 +
604 + 3. Lookup character set name by codepage amended to ensure that CP_UTF8 returns
605 +   UTF8 and not UNICODE_FSS.
606 +
607 + 4. Charset ID problem. When using Firebird 3, with no default database character set
608 +   and a column has a non-default collation specified, an incorrect character set
609 +   id was being reported that could result in a 'division by zero' error when
610 +   used by IBX. This has now been fixed.
611 +
612 + 5. Move GetCharsetName, CharSetID2CodePage, CodePage2CharSetID, CharSetName2CharSetID,
613 +   CharSetWidth from IFirebirdAPI to IAttachment. This is a better data model as
614 +   the character sets supported can be updated on a per database basis. That is
615 +   it is possible to add a (Firebird) user defined character set to a database.
616 +
617 + 6. Add RegisterCharSet to IAttachment. This is used to register a user defined character
618 +   set supported by Firebird with the API.
619 +
620 + 7. Add missing isc_info_db_read_only to list of decoded Database Information items
621 +   in FBOutputBlock.pas and update test suite to include this item.
622 +
623 + 8. FB30Client: avoid always using "StartMultiple" when only a single database attachment.
624 +
625 + 9. Loading Windows fbclient.dll: when using the FIREBIRD variable to locate the client
626 +   library or finding it by disk location, the PATH environment variable is now also set to
627 +   include the FIREBIRD directory. This is to ensure that the correct dlls in the
628 +   firebird client library dependencies are loaded.
629 +
630 + 10. Testsuite: Ensure consistent UTF-8 output on Windows console.
631 +
632 + 11. Testsuite: Update Windows script to include FPC 3.0.4 in search path.
633 +
634 + 12. FB30Statement: Protect call to "Move" and avoid calling with a nil pointer
635 +
636 + 13. FB30Statement: A check has been added to ensure that all SQL Parameters
637 +    have been given a value (including NULL). Previously, failing to set the
638 +    value of an SQL Parameter could give rise to unpredictable results or
639 +    an SQLDA error.
640 +
641 + 14. FB30Statement/FB25Statement: Set SQLParam "modified" when string value set.
642 +
643 + 15. FBAttachment: Avoid string reference count error when processing an Ansistring
644 +    parameter in an array of const passed to IAttachment.OpenCursor, etc.
645 +
646 + 16. FBAttachment: Allow for WideString and UnicodeString parameters in an array
647 +    of const passed to IAttachment.OpenCursor, etc.
648 +
649 +
650 + FBINTF Change Log  version             (1.0-2) Sat, 04 Mar 2017 14:43:56 +0000
651 +
652 + 1. Change syntax to Mode Delphi
653 +
654 + 2. Change all uses of string type to explicit AnsiString in order to ensure
655 +   compatibility between Delphi and FPC.
656 +
657 + 3. Various syntax changes to ensure Delphi and FPC compilation including GUIDs
658 +   defined for each interface.
659 +
660 + 4. Generics syntax variations for Delphi added
661 +
662 + 5. PChar replaced with PByte expect where an actual string is being referenced,
663 +   where PAnsiChar is used instead.
664 +
665 + 6. Review of type definitions in IBExternals to ensure Delphi compatibility
666 +
667 + 7. Testsuite updated for Delphi
668 +
669 + FBINTF Change Log  version            (1.0-1) Fri, 24 Feb 2017 12:17:57 +0000
670 +
671 + 1. Limit maximum Blob segment read/write to MaxuShort. Avoids data loss with
672 +   large blobs and the FB3 API.
673 +
674 + 2. Update Event Handling algorithm to avoid looping due to recreation of the
675 +   event block.
676 +
677 + 3. Avoid invalid XSQLDA error when the only parameter is updated to null
678 +
679 + 4. Array Handling: fix problem with text arrays with character set none. When the
680 +   DB connection has a default character set (e.g. UTF8), an error is raised by
681 +   Firebird if the space allocated is not enough to allow for transliteration, even
682 +   though it is not required for character set none.
683 +
684 + 5. IBUtils: List of reserved words brought up-to-date
685 +
686 + 6. Add ISQL style performance statistics collection to IStatement
687 +
688 + 7. Add IFirebirdAPI.CreateDatabase variant to allow execution of user provided
689 +   CREATE DATABASE statement.
690 +
691 + 8. Update SQL Statement parsing to allow for Array Dimensions. That is so that the ':' in
692 +   an array dimension is not mistaken for a named parameter prefix.
693 +
694 + 9. Trim function no longer applied to result of GetAsString for SQL_TEXT
695 +   when Character set is octets. Avoids loss of non printable characters at start of string.
696 +
697 + 10. Add function GetPerfStatistics to IStatement. This returns ISQL like performance
698 +    statistics for the last action. Requires use of procedure IStatement.EnableStatistics
699 +    to enable stats gathering.
700 +
701 + 11. API Version information added as constants to IB.pas
702 +
703 + 12. BlobMetaData character set id should now be the same as that given by IColumnMetaData.GetCharSetID
704 +
705 + 13. Firebird Character set "NONE" now interpreted as codepage CP_ACP.
706 +
707   FBINTF Change Log  version                                      (1.0-0) Tue, 06 Dec 2016 10:33:47 +0000
708  
709   1. Initial Release

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