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Revision 45 by tony, Tue Dec 6 10:33:46 2016 UTC vs.
Revision 419 by tony, Sat Aug 5 12:42:00 2023 UTC

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1 + FBINTF Change Log  version          (1.4-1 Build 14019) Sat, 05 Aug 2023 13:21:51 +0100
2 +
3 + 1. FBSQLData: ensure that TResults.getSQLData and TResults.GetData use same error
4 +   checks for range checking.
5 +
6 + FBINTF Change Log  version          (1.4-0 Build 14011) Sat, 05 Aug 2023 11:09:09 +0100
7 +
8 + 1. Support package fbudr added for support of User Defined Routines (UDRs), and package
9 +   fbudrtestbed for client side debugging of UDR libraries.
10 +
11 + 2. Package layout changed with introduction of udr support. IB*.pas files moved from
12 +    root directory to "client". IBHeader moved to "Client".
13 +
14 + 3. Delphi packages: all packages now compile .dcp and .bpi files to either
15 +   fbintf\Win32\Debug or fbintf\Win64\Debug by default. Please remove any pre-existing
16 +   fbintf.dcp and fbintf.bpi files from other locations.
17 +
18 + 4. Client side journaling support added. Interface changes
19 +   IAttachment
20 +    function JournalingActive: boolean;
21 +    function GetJournalOptions: TJournalOptions;
22 +    function StartJournaling(aJournalLogFile: AnsiString): integer; overload;
23 +    function StartJournaling(aJournalLogFile: AnsiString; Options: TJournalOptions): integer; overload;
24 +    function StartJournaling(S: TStream; Options: TJournalOptions): integer; overload;
25 +    procedure StopJournaling(RetainJournal: boolean);
26 +
27 + 5. Transactions may now be given a local transaction name:
28 +   IFirebirdAPI
29 +     function StartTransaction(Attachments: array of IAttachment;
30 +             TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
31 +             TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit;
32 +             aName: AnsiString=''): ITransaction; overload;
33 +     function StartTransaction(Attachments: array of IAttachment;
34 +             TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
35 +             TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit;
36 +             aName: AnsiString=''): ITransaction; overload;
37 +
38 +   IAttachment
39 +    function StartTransaction(TPB: array of byte; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
40 +    function StartTransaction(TPB: ITPB; DefaultCompletion: TTransactionCompletion=taCommit): ITransaction; overload;
41 +    function StartTransaction(TPB: array of byte;
42 +                              DefaultCompletion: TTransactionCompletion=taCommit;
43 +                              aName: AnsiString=''): ITransaction; overload;
44 +    function StartTransaction(TPB: ITPB;
45 +                              DefaultCompletion: TTransactionCompletion=taCommit;
46 +                              aName: AnsiString=''): ITransaction; overload;
47 +
48 +  ITransaction
49 +    function GetTransactionName: AnsiString;
50 +    procedure SetTransactionName(aValue: AnsiString);
51 +
52 + 6. Additional Transaction information
53 +     ITPB.function AsText: AnsiString; {Returns TPB as a text string}
54 +
55 +   ITransaction
56 +     function GetDefaultCompletion: TTransactionCompletion;
57 +     function GetJournalingActive(attachment: IAttachment): boolean; {attachment must be specified when multi-database transaction}
58 +
59 + 7. New IAttachment helper functions
60 +     function HasTable(aTableName: AnsiString): boolean;
61 +     function HasFunction(aFunctionName: AnsiString): boolean;
62 +     function HasProcedure(aProcName: AnsiString): boolean;
63 +     function GetAttachmentID: integer;
64 +     function GetCharSetID: integer;
65 +
66 + 8. IStatement: if the BatchRowLimit is set to maxint, the maximum possible buffer size
67 +   will be allocated for batch operations.
68 +
69 + 9. IStatement, IColumnMetaData and ISQLParam all now consistently provide:
70 +    function GetStatement: IStatement;
71 +    function GetTransaction: ITransaction;
72 +    function GetAttachment: IAttachment;
73 +
74 + 10. Internal: a more disciplined approach to the handling of Firebird.IReferenceCounted
75 +    interfaces.
76 +
77 + 11. New interface type: IFBNumeric. IFBNumeric is implemented in the unit FBNumeric
78 +    and concentrates all handling of Fixed Point numbers. New ISQLItem and ISQLParam
79 +    functions getAsNumeric and setAsNumeric allow for direct retrival and manipulation
80 +    of numerics without loss of precision.
81 +
82 + 12. TryStrToNumeric and NumericToDouble moved from IBUtils to FBNumeric.
83 +
84 + 13. ISQLParams new method "Clear"
85 +
86 + 14. Connection Info (e.g. ODS Version, Remote Protocol) now retrieved on first
87 +    request rather than on attachment connect.
88 +
89 + 15. IStatus.IBDataBaseErrorMessages now defaults to [ShowIBMessage]. This reflects the
90 +    fact that SQLCodes are soon to be deprecated. In the future, the other options
91 +    will be silently ignored if SQLCode support is not present in the Firebird
92 +    Client library.
93 +
94 + 16. ITransaction changes Rollback and Commit from procedures to functions:
95 +      function Commit(Force: boolean=false): TTrCompletionState;
96 +      function Rollback(Force: boolean=false): TTrCompletionState;
97 +
98 +    Specifically, this is to allow the functions to report back a failed commit or
99 +    rollback when Force = true. In the case, the transaction handle has been
100 +    released, while the transaction remains in limbo.
101 +
102 + 17. IAttachment ExecImmediate.
103 +    When the transaction parameters are provided as an array of const and the
104 +    statement fails, the transaction is rolledback (forced) before the exception
105 +    is raised.
106 +
107 + 18. In Firebird 3 and later API: the status vector is now a thread var, as was
108 +    already the case with the legacy API. Avoids problems when calling underlying
109 +    Firebird API in multiple threads.
110 +
111 + 19. IBUtils: TSQLXMLReader: "string" type changed to "AnsiString" for compatibility
112 +    reasons.
113 +
114 + 20. IDBInformation.DecodeVersionString now supported isc_info_firebird_version.
115 +
116 + 21. TSQLXMLReader: handle 'blob' as a reserved word
117 +
118 + 22. ISQLParam.SetAsVariant now accepts a vartype of varUString (UnicodeString).
119 +
120 +
121 + FBINTF Change Log  version          (1.3-3 Build 12935) Mon, 06 Dec 2021 23:17:13 +0000
122 +
123 + 1. Fix compile error with fpc trunk (3.3.1 and later), due to type change to tzname in "unix" unit.
124 +
125 + 2. Remove constraint in IAttachment.HasScollableCursors that returned false when
126 +   using remote protocol. Scrollable cursors with remote database expected to
127 +   be support for Firebird 4.0.1 onwards. Note: Firebird 4.0.0 will return
128 +   a not supported error.
129 +
130 + 3. IStatement: new function;
131 +    TStatementFlag = (stHasCursor,stRepeatExecute,stScrollable);
132 +    TStatementFlags = set of TStatementFlag;
133 +    function GetFlags: TStatementFlags;
134 +
135 + 4. Revised behaviour for IStatement.ExecuteQuery in order to preserve backwards
136 +   compatibility.
137 +   In Firebird 5, Update..Returning may returns multiple rows and hence the statemen
138 +   type changes from ExecProcedure to Select. So that ExecuteQuery can continue
139 +   to be used with Update...Retruning statements that return a singleton row,
140 +   instead of raising an exception when ExecuteQuery is used with a (SELECT) statement,
141 +   it will open the cursor and return the first row only.
142 +
143 + 5. ITransaction: new functions:
144 +    function GetIsReadOnly: boolean;
145 +    function GetTransactionID: integer;
146 +    function GetTrInformation(Requests: array of byte): ITrInformation; overload;
147 +    function GetTrInformation(Request: byte): ITrInformation; overload;
148 +
149 +   The latter two return the Transaction Information block. The first two extract
150 +   information the Transaction Information block
151 +
152 + 6. New function TSQLTokeniser.ReadCharacters
153 +   Used internally.
154 +
155 + 7. IStatement: GetProcessedSQL bug fix. No longer raises and error if SQL contains
156 +   parameter placeholders instead of named parameters.
157 +
158 + 8. ITransaction (Firebird 3 and later): An exception raised when freeing an underlying
159 +   transaction handle is now ignored if Rollback/Commit is called with Force=true
160 +
161 + 9. Tidy up of exception handling code. Under the legacy API, fb_interpret is now
162 +   used to get an IBError Message instead of isc_interprete.
163 +
164 + 10. Internal tidyup. Native code now used for decoding integers and the events
165 +    buffer. Avoids dependencies on fbclient functions isc_portable_integer,
166 +    isc_event_block and isc_event_counts.
167 +
168 + 11. New IAttachment function
169 +     function GetAttachmentID: integer;
170 +
171 + 12. Internal changes to TFBClientAPI, TFBAttachment and TFBTransaction and TFB30
172 +    subclasses to enable UDR support.
173 +
174 + FBINTF Change Log  version          (1.3-2 Build 12889) Sun, 24 Oct 2021 13:49:28 +0100
175 +
176 + 1. TFBClientAPI.GetProcAddr. Add check for nil reference.
177 +
178 + 2. IStatement: new methods:
179 +    procedure SetStaleReferenceChecks(Enable:boolean); {default true}
180 +    function GetStaleReferenceChecks: boolean;
181 +
182 +   In previous versions, stale reference checks were always enabled. This allows the
183 +   user to disable them on a per statement basis. Note this can risk out-of-date
184 +   statement BLR. See User Guide.
185 +
186 + 3. IBUtils: TSQLwithNamedParamsTokeniser now recognises a CASE...END block within a
187 +   stored procedure and hence avoids replacing named parameters within a containing
188 +   BEGIN..END block.
189 +
190 + 4. ISQLParam: using a string value to set an integer field with a scale factor of
191 +   zero is now treated as a special case to avoid the risk of floating point
192 +   rounding errors affecting pure integers.
193 +
194 + 5. ISQLParam:  Review and tidy-up of SetAsString for numeric types.
195 +
196 + 6. ISQLParam is now subclassed from IParamMetaData, which provides access to the mutable
197 +   SQL Parameter metadata (methods moved from ISQLParam).
198 +
199 + 7. ISQLParam: new method
200 +     function getColMetadata: IParamMetaData;
201 +   This instance of IParamMetaData returns the original column metadata which is unmutable.
202 +   Note: ISQLParam metadata can change after a parameter value has been set e.g when
203 +   setting a VARCHAR column to an integer value.
204 +
205 + 8. IStatement: can now set cursor name when opening a cursor. New overloaded method:
206 +    procedure Prepare(CursorName: AnsiString; aTransaction: ITransaction=nil); overload;
207 +   also IAttachment:
208 +    function Prepare(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; CursorName: AnsiString=''): IStatement; overload;
209 +    function Prepare(transaction: ITransaction; sql: AnsiString; CursorName: AnsiString=''): IStatement; overload;
210 +    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
211 +                       aSQLDialect: integer; GenerateParamNames: boolean=false;
212 +                       CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
213 +    function PrepareWithNamedParameters(transaction: ITransaction; sql: AnsiString;
214 +                       GenerateParamNames: boolean=false;
215 +                       CaseSensitiveParams: boolean = false; CursorName: AnsiString=''): IStatement; overload;
216 +
217 + 9. Support for scrollable cursors added. New/updated methods:
218 +   IAttachment:
219 +    function HasScollableCursors: boolean;
220 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
221 +                             Scrollable: boolean=false): IResultSet; overload;
222 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
223 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
224 +                             params: array of const): IResultSet; overload;
225 +    function OpenCursor(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false;
226 +                             params: array of const): IResultSet; overload;
227 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer; Scrollable: boolean;
228 +                             params: array of const): IResultSet; overload;
229 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; aSQLDialect: integer;
230 +                             Scrollable: boolean=false): IResultSet; overload;
231 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
232 +    function OpenCursorAtStart(transaction: ITransaction; sql: AnsiString; Scrollable: boolean;
233 +                             params: array of const): IResultSet; overload;
234 +    function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean=false): IResultSet; overload;
235 +    function OpenCursorAtStart(sql: AnsiString; Scrollable: boolean;
236 +                             params: array of const): IResultSet; overload;
237 +   IStatement:
238 +     function OpenCursor(Scrollable: boolean; CursorName: AnsiString =''; aTransaction: ITransaction=nil): IResultSet; overload;
239 +   IResultSet:
240 +    function FetchPrior: boolean; {fetch previous record}
241 +    function FetchFirst:boolean; {fetch first record}
242 +    function FetchLast: boolean; {fetch last record}
243 +    function FetchAbsolute(position: Integer): boolean; {fetch record by its absolute position in result set}
244 +    function FetchRelative(offset: Integer): boolean; {fetch record by position relative to current}
245 +    function IsBof: boolean;
246 +
247 + 10. IArray: tidyup of SetAsString method to ensure correct handling of fixed point numbers.
248 +
249 + 11. IBUtils: TSQLTokeniser. CRLF now combined by low level parser into sqltEOL token. This
250 +    may be noticeable when a line separator occurs inside quoted text. The quoted text
251 +    output by the tokeniser will now use the platform specific lineEnding regardless
252 +    of whether the input uses the CRLF or LF as a line separator.
253 +
254 + 12. IStatement, IResultsSet: Support for scrollable cursors added (note: local databases only)
255 +
256 +
257 + FBINTF Change Log  version          (1.3-1 Build 12776) Mon, 23 Aug 2021 11:09:33 +0100
258 +
259 + 1. Integer decodes in information blocks (e.g. IDBInfoItem) widened from 32 bit to 64-bit integers.
260 +
261 + 2. Support for inline blob encoding. Blob values pass using the "SetAsString" method
262 +   will now be encoded inline (i.e. as part of the parameter buffer) if they are
263 +   shorter than a pre-set limit. Longer values continue to be saved as blobs as a
264 +   separate server interaction. This is intended as a performance optimisation.
265 +
266 +   The pre-set limit defaults to 8192 bytes and can be inspected/modified using the new
267 +   IAttachment interface functions:
268 +
269 +    function GetInlineBlobLimit: integer;
270 +    procedure SetInlineBlobLimit(limit: integer);
271 +
272 + 3. Support for Firebird 4 IBatch interface added. This is largely transparent to the API
273 +   user as the functionality is embedded in the implementation of the IStatement
274 +   interface. Three new functions are defined:
275 +
276 +    procedure AddToBatch;
277 +    function ExecuteBatch(aTransaction: ITransaction=nil): IBatchCompletion;
278 +    procedure CancelBatch;
279 +    function GetBatchCompletion: IBatchCompletion;
280 +    function GetBatchRowLimit: integer;
281 +    procedure SetBatchRowLimit(aLimit: integer);
282 +
283 +   Also
284 +
285 +    function IsInBatchMode: boolean;        {true after call to execute(eaDefer)}
286 +    function HasBatchMode: boolean;         {true if and only if IBatch Supported}
287 +
288 +   For more information see the User Guide.
289 +
290 + 4. Default error message contents. Now aligned with User Guide section 10.2 i.e. error messages
291 +   provided with the EIBInterBaseError now include all three parts.
292 +
293 + 5. Firebird.pas and include files updated to Firebird 4.0.0
294 +
295 + 6. New IStatement method: function GetSQLStatementTypeName: AnsiString;
296 +   Returns SQL Statement type as a text string;
297 +
298 + 7. ISQLData.AsInteger and AsInt64 now use "Round" to convert a float field to
299 +   an integer instead of "trunc". This is for compatibility with TFloatField.AsInteger.
300 +
301 + FBINTF Change Log  version          (1.2-1 Build 12552) Wed, 09 Jun 2021 13:05:40 +0100
302 +
303 + 1. Big fix for Firebird 4.0. A internal change in Firebird 4.0.0 from RC1 flushed out a
304 +   typo in FB30Statement.pas that caused an unknown parameter error.
305 +
306 + FBINTF Change Log  version          (1.2-0 Build 12520) Fri, 19 Feb 2021 13:27:23 +0000
307 +
308 + 1. Imported (Firebird) constants updated for Firebird 4.
309 +
310 + 2. Firebird.pas from Firebird 4 integrated into source code tree.
311 +
312 + 3. Added Support for TIMETAMP WITH TIME ZONE and TIME WITH TIME ZONE data types.
313 +
314 + 4. Added Support for SQL_DEC16, SQL_DEC34 and extended NUMERIC precision.
315 +
316 + 5. New unit 'FBClientLib.pas' added and provides new interface IFBIMasterProvider.
317 +   QueryInterface may be used to coerce this interface from IFirebirdAPI. The
318 +   interface provides a single method "function GetIMasterIntf: IMaster". This provides
319 +   type safe access to the Firebird IMaster interface and avoids the need to turn
320 +   off object checks when coercing "function GetIMaster: TObject" to IMaster.
321 +
322 + 6. New IFirebirdAPI Calls:
323 +    function HasLocalTZDB: boolean;
324 +    function HasTimeZoneSupport: boolean;
325 +    function HasExtendedTZSupport: boolean;
326 +    procedure SQLDecFloatEncode(aValue: tBCD; SQLType: cardinal; bufptr: PByte);
327 +    function SQLDecFloatDecode(SQLType: cardinal; scale: integer; bufptr: PByte): tBCD;
328 +
329 + 7. New IAttachment Calls:
330 +    function HasDecFloatSupport: boolean;
331 +    function GetTimeZoneServices: ITimeZoneServices;
332 +    function HasTimeZoneSupport: boolean;
333 +
334 + 8. New Interface ITimeZoneServices.
335 +
336 + 9. New ISQLData API Calls:
337 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
338 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
339 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
340 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
341 +    function GetAsUTCDateTime: TDateTime;
342 +    function GetAsBCD: tBCD;
343 +
344 + 10. New ISQLParam API Calls
345 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
346 +    procedure GetAsDateTime(var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
347 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
348 +    procedure GetAsTime(var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
349 +    function GetAsUTCDateTime: TDateTime;
350 +    function GetAsBCD: tBCD;
351 +    function GetStatement: IStatement;
352 +    function GetTransaction: ITransaction;
353 +    procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
354 +    procedure SetAsTime(aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
355 +    procedure SetAsDateTime(aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
356 +    procedure SetAsDateTime(aValue: TDateTime; aTimeZone: AnsiString); overload;
357 +    procedure SetAsUTCDateTime(aUTCTime: TDateTime);
358 +    procedure SetAsBcd(aValue: tBCD);
359 +
360 + 11. New IArray API Calls
361 +    procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID); overload;
362 +    procedure GetAsDateTime(index: array of integer; var aDateTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString); overload;
363 +    procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezoneID: TFBTimeZoneID; OnDate: TDateTime); overload;
364 +    procedure GetAsTime(index: array of integer; var aTime: TDateTime; var dstOffset: smallint; var aTimezone: AnsiString; OnDate: TDateTime); overload;
365 +    function GetAsUTCDateTime(index: array of integer): TDateTime;
366 +    procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
367 +    procedure SetAsDateTime(index: array of integer; aValue: TDateTime; aTimeZone: AnsiString); overload;
368 +    procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZoneID: TFBTimeZoneID); overload;
369 +    procedure SetAsTime(index: array of integer; aValue: TDateTime; OnDate: TDateTime; aTimeZone: AnsiString); overload;
370 +
371 + 12. Utility functions in IBUtils
372 +    function ParseDateTimeTZString(aDateTimeStr: Ansistring; var aDateTime: TDateTime;
373 +              var aTimezone: AnsiString; aFormatSettings: TFormatSettings; TimeOnly: boolean=false): boolean;
374 +    procedure FBDecodeTime(aTime: TDateTime; var Hour, Minute, Second: word; var DeciMillisecond: cardinal);
375 +    function FBEncodeTime(Hour, Minute, Second, DeciMillisecond: cardinal): TDateTime;
376 +    function FBFormatDateTime(fmt: AnsiString; aDateTime: TDateTime): AnsiString;
377 +    function FormatTimeZoneOffset(EffectiveTimeOffsetMins: integer): AnsiString;
378 +    function DecodeTimeZoneOffset(TZOffset: AnsiString; var dstOffset: integer): boolean;
379 +
380 + 13. IDPB, ITPB and ISPB: new interface method
381 +      function AddByTypeName(ParamTypeName: AnsiString): IDPBItem/ITPBItem/ISPBItem;
382 +    This is used to add a parameter block item by the string equivalent of its
383 +    symbolic type name. e.g. DPB.AddByTypeName('isc_dpb_user_name').AsString := '...'
384 +
385 + 14. IDPBItem/ITPBItem/ISPBItem: new interface method:
386 +      function getParamTypeName: AnsiString;
387 +
388 + 15. fb_shutdown now called before unloading Firebird library. This can avoid a
389 +     SIGEVENT error when a programme using the embeded server is unloaded.
390 +
391 + FBINTF Change Log  version          (1.1-6 Build 12237) Tue, 21 Jul 2020 08:54:21 +0100
392 +
393 + 1. GetImplementationVersion now correctly returns '3.0' for Firebird 3 API
394 +   with a Firebrid 3 client library.
395 +
396 + 2. Linux Only: FIREBIRD environment variable is now checked when loading the client library.
397 +    If a client library path is not explicitly provided and the FIREBIRD environment
398 +    variable is set then the directory given by this variable and any 'lib' subdirectory
399 +    are searched for the Firebird client library. Only if none is found, is the default
400 +    client library used.
401 +
402 + 3.  IUtil.FormatStatus now used to format error messages when using new API
403 +
404 + 4.  Fixed Array SDL: array_desc_scale now correctly encoded as a signed integer.
405 +
406 + 5.  SQL_TEXT handling changed. When the value of an SQL_TEXT (i.e. fixed width string) column is
407 +    returned using GetAsString and the string codepage is UTF8, the string is truncated so
408 +    that the byte length corresponds to the number of characters specified for the column.
409 +    SQL_TEXT strings are no longer automatically trimmed to remove all trailing white space. This is
410 +    correct behaviour but may affect some implementations that relied upon automatic
411 +    trimming of trailing white space.
412 +
413 + 6.  New IFirebirdAPI Calls:
414 +      function GetClientMajor: integer;
415 +      function GetClientMinor: integer;
416 +
417 + 7.  IColumnMetaData and IArrayMetaData: new method
418 +      function GetCharSetWidth: integer;
419 +
420 + FBINTF Change Log  version          (1.1-5 Build 12022) Fri, 17 Apr 2020 10:35:55 +0100
421 +
422 + 1. ISQLParams.GetHasCaseSensitiveParams added. Returns true if param names are
423 +   case sensitive
424 +
425 + 2. Single line SQL comments starting with '--' are now recognised by SQL Parser.
426 +
427 + 3. New API Calls:
428 +        IColumnMetaData.GetStatement
429 +        IColumnMetaData.GetTransaction
430 +        ISQLData.GetStrDataLength
431 +        IResults.GetStatement
432 +        IAttachment.OpenBlob (using Blob metadata)
433 +        IAttachment.OpenArray (using array metadata)
434 +
435 + 4. FBMessages: removal of unused messages
436 +
437 + 5. TFBArray.Create (2nd case): ensure that FFirebirdClientAPI is correctly set.
438 +
439 + 6. TIBSQLStatementType: SQLSavePoint added to end of enumeration.
440 +
441 + FBINTF Change Log  version          (1.1-4 Build 11515)  Fri, 28 Dec 2018 10:04:19 +0000
442 +
443 + 1. Fix a problem with the SQL parameter parser that failed to recognise parameters
444 +   where the second character of the parameter name is a numeric.
445 +
446 + 2. New method for IAttachment: procedure getFBVersion(version: TStrings);
447 +   This returns the isc_version connection information as one or more lines.
448 +   This is the same information as returned by isql with the -z option.
449 +
450 + 3. If -dFIREBIRD3APIONLY is used as a compiler option then the legacy Firebird API
451 +   is no longer compiled in. Likewise, if -dLEGACYFIREBIRDAPIONLY is used as a
452 +   compiler option then the Firebird 3 API is no longer compiled in.
453 +
454 + 4. IColumnMetaData: new method.
455 +
456 +   TIBDateTimeFormats = (dfTimestamp, {SQL TIMESTAMP}
457 +                        dfDateTime,   {SQL DATETIME}
458 +                        dfTime);
459 +
460 +   function GetDateTimeStrLength(DateTimeFormat: TIBDateTimeFormats): integer;
461 +
462 +   This returns the max. number of characters returned by the "AsString" method
463 +   when the SQL type of the column is respectively TIMESTAMP, DATETIME or TIME.
464 +
465 + 5. Additional argument for IAttachment.PrepareWithNamedParameters -
466 +     CaseSensitiveParams: boolean = false
467 +
468 +   If this argument is set to true then SQL parameter names are assumed to be case
469 +   sensitive and must be referenced (using ISQLParams.ByName) using the case
470 +   sensitive name.
471 +
472 + 6. Bug fix: when setting a query parameter, it is now possible, when the parameter
473 +   is of type VarChar or Char to set the parameter to a numeric value (e.g. using
474 +   .AsCurrency) and then subsequently to update the value to a non-numeric string
475 +   using .AsString.
476 +
477 +
478 +
479 + FBINTF Change Log  version                  (1.1-3) Wed, 05 Dec 2018 14:28:10 +0000
480 +
481 + 1. DARWIN only syntax error: fix missing semi-colon in TFBClientAPI.LoadIBLibrary
482 +
483 + 2. Restrict IsMultiThread check to Unix only for compatibility with
484 +   https://bugs.freepascal.org/view.php?id=30535
485 +
486 + 3. New SQL Tokeniser added to IBUtils. This is used to pre-process SQL with
487 +   named parameters and is intended to avoid problems with (e.g.) Execute Block
488 +   and processing internal parameters as statement parameters.
489 +
490 + 4. New interface IFirebirdLibrary provides access to the underlying firebird DLL
491 +   or shared object. Available via a new member (GetFBLibrary) of IFirebirdAPI.
492 +
493 + 5. New function added to IB.pas
494 +
495 +   function LoadFBLibrary(aLibPathName: string): IFirebirdLibrary
496 +
497 +   This allows a Firebird Library to be loaded from an explicit path. use the
498 +   IFirebirdLibrary.GetFirebirdAPI member function to get the Firebird API using
499 +   the library. It is possible to load Firebird libraries from different locations
500 +   simultaneously, each with a distinct IFirebirdAPI.
501 +
502 + FBINTF Change Log  version               (1.1-2) Mon, 16 Apr 2018 09:30:32 +0100
503 +
504 + 1. Firebird.pas: {$OBJECTCHECKS OFF} added to file to avoid runtime error when
505 +   program compiled with -CR command line switch.
506 +
507 + 2. IServiceManager additions (informational):
508 +    function getProtocol: TProtocol;
509 +    function getPortNo: AnsiString;
510 +
511 + 3. IServiceManager improved error handling. Interfaces changed:
512 +    function Start(Request: ISRB; RaiseExceptionOnError: boolean=true): boolean;
513 +    function Query(SQPB: ISQPB; Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
514 +    function Query(Request: ISRB; RaiseExceptionOnError: boolean=true) :IServiceQueryResults; overload;
515 +
516 + 4. IAttachment addition (informational)
517 +    function GetSecurityDatabase: AnsiString;
518 +
519 + 5. IStatement: performance counters now updated after each Fetch. GetPerfStatistics
520 +   thus now returns accumulated stats for a select statement from opening a cursor
521 +   up to the last fetch.
522 +
523 + 6. DARWIN: uloadlibrary.inc bug fix. Many thanks to Luigi Naimi for correcting
524 +   the problem.
525 +
526 + 7. Type change: "TPerfCounters = array[TPerfStats] of Int64". Note "Int64"
527 +   replaces deprecated "comp" type.
528 +
529 + 10. Testsuite Test10 updated to include thread synchronisation for event reporting.
530 +
531 + 11. URL Connection Strings: inet4 and inet6 now recognised.
532 +
533 + 12. IBUtils: Parse and Make Connect String now recognise URL style loopback syntax.
534 +
535 + 13. IAttachment.CharSetName2CharSetID is now performed case insensitive.
536 +
537 +
538 + FBINTF Change Log  version (1.1-1) Tue, 27 Feb 2018 16:51:16 +0000
539 +
540 + 1. IBUtils.QuoteIdentifierIfNeeded: Add check for space character.
541 +
542 + 2. IAttachment: add two new methods
543 +     function HasDefaultCharSet: boolean;
544 +     function GetDefaultCharSetID: integer;
545 +
546 +   These return, respectively, true if a connection default character set was
547 +   specified and the character set id of the connection default character set.
548 +   The DefaultCharSetID is cached when the connection is opened and hence does not
549 +   require a database lookup.
550 +
551 + 3. Avoid exception when a text blob is a stored procedure parameter.
552 +
553 + 4. Update test suite to include a test for a stored proc returning a text blob.
554 +
555 + 5. IAttachment: add
556 +      function GetRemoteProtocol: AnsiString;
557 +      function GetODSMajorVersion: integer;
558 +      function GetODSMinorVersion: integer;
559 +      function GetAuthenticationMethod: AnsiString;
560 +
561 +   These results are cached when the connection is opened and hence do not
562 +   require a database lookup.
563 +
564 + 6. IAttachment: add "function GetConnectString: AnsiString;" This returns the
565 +   connect string used to create/connect to the database.
566 +
567 + 7. IAttachment: Create Database using SQL statement. The username and password
568 +   are now extracted and used to populate a DPB made available via IAttachment.getDPB.
569 +   It is now possible to use IAttachment disconnect/connect to reconnect to
570 +   a database for which the initial connection was established by a create
571 +   database sql statement. Available in FPC only.
572 +
573 + 8. Update Test 1 to test 5, 6 and 7 above.
574 +
575 + 9. IBUtils code tidy up.
576 +
577 + 10. Parameter Block interfaces "find" method. As documented, this should have
578 +   returned a nil interface when the item could not be found. Instead, an empty
579 +   interface item was returned. "Find" now works as documented and will return
580 +   a nil interface if the item cannot be found.
581 +
582 + 11. DBInformation: support added for isc_info_active_tran_count and isc_info_creation_date.
583 +
584 + 12. DBInformation: New interfaces: IDIRB and IDIRBItem added to support DB Information
585 +    requests with additional parameters. This is to enable support for fb_info_page_contents
586 +    (return of page contents). Response to fb_info_page_contents returned as
587 +    a string with code page CP_NONE.
588 +
589 + 13. DBInformation: Support for fb_info_pages_used and fb_info_pages_free added, plus
590 +    test suite updated.
591 +
592 + 14. DBInformation: Support for fb_info_crypt_key (Firebird 3.0.3 onwards) added as
593 +    a string type, and fb_info_conn_flags (Firebird 3.0.3 onwards) added as an integer type.
594 +
595 + 15. Service Manager: List of protocols supported expanded to include inet, wnet and xnet.
596 +    An overloaded version of IIFirebirdAPI.GetServiceManager also allows a non
597 +    default connection port to be specified.
598 +
599 + FBINTF Change Log  version                             (1.1-0) Sun, 07 Jan 2018 15:20:02 +0000
600 +
601 + 1. Fix issues with setting SQL Param values using SetAsString with Numeric types.
602 +   Scale is no longer ignored.
603 +
604 + 2. Fix issues with setting SQL Param values using SetAsString with Date values
605 +   not in locale format but which are recognised by Firebird. Date values that
606 +   cannot be converted to a string using Pascal library are now passed through
607 +   to Firebird as Text Strings.
608 +
609 + 3. Lookup character set name by codepage amended to ensure that CP_UTF8 returns
610 +   UTF8 and not UNICODE_FSS.
611 +
612 + 4. Charset ID problem. When using Firebird 3, with no default database character set
613 +   and a column has a non-default collation specified, an incorrect character set
614 +   id was being reported that could result in a 'division by zero' error when
615 +   used by IBX. This has now been fixed.
616 +
617 + 5. Move GetCharsetName, CharSetID2CodePage, CodePage2CharSetID, CharSetName2CharSetID,
618 +   CharSetWidth from IFirebirdAPI to IAttachment. This is a better data model as
619 +   the character sets supported can be updated on a per database basis. That is
620 +   it is possible to add a (Firebird) user defined character set to a database.
621 +
622 + 6. Add RegisterCharSet to IAttachment. This is used to register a user defined character
623 +   set supported by Firebird with the API.
624 +
625 + 7. Add missing isc_info_db_read_only to list of decoded Database Information items
626 +   in FBOutputBlock.pas and update test suite to include this item.
627 +
628 + 8. FB30Client: avoid always using "StartMultiple" when only a single database attachment.
629 +
630 + 9. Loading Windows fbclient.dll: when using the FIREBIRD variable to locate the client
631 +   library or finding it by disk location, the PATH environment variable is now also set to
632 +   include the FIREBIRD directory. This is to ensure that the correct dlls in the
633 +   firebird client library dependencies are loaded.
634 +
635 + 10. Testsuite: Ensure consistent UTF-8 output on Windows console.
636 +
637 + 11. Testsuite: Update Windows script to include FPC 3.0.4 in search path.
638 +
639 + 12. FB30Statement: Protect call to "Move" and avoid calling with a nil pointer
640 +
641 + 13. FB30Statement: A check has been added to ensure that all SQL Parameters
642 +    have been given a value (including NULL). Previously, failing to set the
643 +    value of an SQL Parameter could give rise to unpredictable results or
644 +    an SQLDA error.
645 +
646 + 14. FB30Statement/FB25Statement: Set SQLParam "modified" when string value set.
647 +
648 + 15. FBAttachment: Avoid string reference count error when processing an Ansistring
649 +    parameter in an array of const passed to IAttachment.OpenCursor, etc.
650 +
651 + 16. FBAttachment: Allow for WideString and UnicodeString parameters in an array
652 +    of const passed to IAttachment.OpenCursor, etc.
653 +
654 +
655 + FBINTF Change Log  version             (1.0-2) Sat, 04 Mar 2017 14:43:56 +0000
656 +
657 + 1. Change syntax to Mode Delphi
658 +
659 + 2. Change all uses of string type to explicit AnsiString in order to ensure
660 +   compatibility between Delphi and FPC.
661 +
662 + 3. Various syntax changes to ensure Delphi and FPC compilation including GUIDs
663 +   defined for each interface.
664 +
665 + 4. Generics syntax variations for Delphi added
666 +
667 + 5. PChar replaced with PByte expect where an actual string is being referenced,
668 +   where PAnsiChar is used instead.
669 +
670 + 6. Review of type definitions in IBExternals to ensure Delphi compatibility
671 +
672 + 7. Testsuite updated for Delphi
673 +
674 + FBINTF Change Log  version            (1.0-1) Fri, 24 Feb 2017 12:17:57 +0000
675 +
676 + 1. Limit maximum Blob segment read/write to MaxuShort. Avoids data loss with
677 +   large blobs and the FB3 API.
678 +
679 + 2. Update Event Handling algorithm to avoid looping due to recreation of the
680 +   event block.
681 +
682 + 3. Avoid invalid XSQLDA error when the only parameter is updated to null
683 +
684 + 4. Array Handling: fix problem with text arrays with character set none. When the
685 +   DB connection has a default character set (e.g. UTF8), an error is raised by
686 +   Firebird if the space allocated is not enough to allow for transliteration, even
687 +   though it is not required for character set none.
688 +
689 + 5. IBUtils: List of reserved words brought up-to-date
690 +
691 + 6. Add ISQL style performance statistics collection to IStatement
692 +
693 + 7. Add IFirebirdAPI.CreateDatabase variant to allow execution of user provided
694 +   CREATE DATABASE statement.
695 +
696 + 8. Update SQL Statement parsing to allow for Array Dimensions. That is so that the ':' in
697 +   an array dimension is not mistaken for a named parameter prefix.
698 +
699 + 9. Trim function no longer applied to result of GetAsString for SQL_TEXT
700 +   when Character set is octets. Avoids loss of non printable characters at start of string.
701 +
702 + 10. Add function GetPerfStatistics to IStatement. This returns ISQL like performance
703 +    statistics for the last action. Requires use of procedure IStatement.EnableStatistics
704 +    to enable stats gathering.
705 +
706 + 11. API Version information added as constants to IB.pas
707 +
708 + 12. BlobMetaData character set id should now be the same as that given by IColumnMetaData.GetCharSetID
709 +
710 + 13. Firebird Character set "NONE" now interpreted as codepage CP_ACP.
711 +
712   FBINTF Change Log  version                                      (1.0-0) Tue, 06 Dec 2016 10:33:47 +0000
713  
714   1. Initial Release

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