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Revision 41 by tony, Sat Jul 16 12:25:48 2016 UTC vs.
Revision 421 by tony, Sat Oct 21 14:22:28 2023 UTC

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1 < IBX Change Log  version                                     (1.4-2) Sat, 16 Jul 2016 13:25:48 +0100
1 > IBX Change Log  version (2.6-3 Build 14080) Sat, 21 Oct 2023 14:14:22 +0100
2 >
3 > 1. Update to calls to EInterbaseError to add default code page. Consequential
4 >   on change to fbintf.
5 >
6 > 2. Update some examples to replace test for null date with the NullDate constant
7 >   instead of zero. This is because Laz 3.0 changes the value of NullDate.
8 >
9 > IBX Change Log  version (2.6-2 Build 14016) Sat, 05 Aug 2023 11:54:55 +0100
10 >
11 > 1. Fixed repeated "type" keyword in IBBufferCursors. This may cause a compile error
12 >   with later versions of fpc - later than 3.2.2.
13 >
14 > 2. IBUpdateSQL. update internal queries if parent dataset database changed.
15 >
16 > 3. IBUpdateSQL: Do not prepare an empty internal query.
17 >
18 > 4. IBBufferedCursors: avoid range error when max field no. is > fields.count
19 >
20 > 5. IBBufferedCursors: avoid End of File error if refresh query returns and empty row count
21 >
22 > IBX Change Log  version (2.6-1 Build 13985) Mon, 17 Jul 2023 14:16:41 +0100
23 >
24 > 1. Maintenance update of 2.6.0. This version is still at beta.
25 >
26 > 2. Reverse out changes to DrawCellText signature in IBArrayGrid and IBDynamic Grid.
27 >   See https://gitlab.com/freepascal.org/lazarus/lazarus/-/commit/53aaae9c5e2a5edac5b1d2f70739a8ef7b0a9623
28 >
29 > 3. ibxscript: When parsing a store procedure or function with a variable name
30 >   enclosed in doublequotes, the double quotes are no longer removed.
31 >
32 > IBX Change Log  version (2.6-0 Build 13976) Thu, 22 Jun 2023 13:49:22 +0100
33 >
34 > NOTE: THIS VERSION RE-WRITES THE INTERNAL BUFFER MANAGER AND SHOULD BE CONSIDERED
35 >      AS BETA SOFTWARE. EVEN THOUGH IT HAS PASSED ALL REGRESSION TESTS, IT CANNOT
36 >      BE ASSUMED TO BE PRODUCTION READY UNTIL WIDER USE. PLEASE REPORT ANY
37 >      ISSUES TO support@mwasoftware.co.uk
38 >
39 > 1. Complete rewrite of internal buffer management in order to improve performance
40 >   and maintainability. Highlights:
41 >
42 >   * Extending the size of the buffer pool no longer has to copy the entire record
43 >     cache. Instead, a new extent is simply added to the buffer pool.
44 >   * A memory to memory copy of each display buffer now is avoided when scolling the
45 >     dataset.
46 >   * A separate set of buffers is now used for calculated fields. This avoids
47 >     having to keep copies of calculated field values in the buffer cache.
48 >   * Compact bitmaps are used to record null status and need to refresh in each
49 >     buffer.
50 >   * Display buffer type changed from PChar to TRecordBuffer in line with change of
51 >     buffer type in FCL-DB.
52 >
53 > 2. TIBUpdateSQL: changes to SQL text will close linked dataset if open. This is
54 >   to ensure same behaviour as TIBDataset, TIBTable and TIBStoredProcedure.
55 >
56 > 3. TField Provider Flags: pfRefreshOnInsert and pfRefreshOnUpdate are now supported.
57 >   If either or both of these flags are set at design time (using the fields editor)
58 >   then this forces a row refresh on respectively insert or update, or both, when the
59 >   corresponding field is not present in an SQL RETURNING clause.
60 >
61 > 4. TIBCustomDataset.FieldDefsFromQuery moved to a helper class (TFieldDefsMaker) in order to improve
62 >   maintainability and readability and to add identification of primary key fields.
63 >
64 > 5. TIBQuery, TIBDataset and TIBTable. Traditionally, IBX has implemented the Refresh method
65 >   as a refresh of the current row. However, this is different behaviour to that described
66 >   in the FPC documentation for TDataset.Refresh which is described as "refetches the data in
67 >   the dataset from the underlying database, and attempts to reposition the cursor on
68 >   the same record as it was". IBX now complies with the FPC definition of Refresh.
69 >
70 > 6. A progammatic Row Refresh should no longer be required.
71 >   Use Insert/Update... returning to refresh any fields that may change following an
72 >   insert or update i.e. Identify fields on Insert only, Computed By, Blob and array fields
73 >   on both. If there are any other fields (e.g. updated by triggers) set the appropriate ProviderFlag
74 >   for the field at Design Time to force a row refresh if not in the returning clause.
75 >
76 > 7. It should now be possible to insert a row into an empty unidirectional dataset.
77 >
78 > 8. New TIBQuery, TIBDataSet and TIBTable property: BufferChunksInFirstBlock (default 50).
79 >   This gives the number of buffers in the initial block for the buffer pool in
80 >   bi-directional datasets. BufferChunks (default 1000) gives the number of buffers
81 >   in subsequent buffer pool blocks. This avoids large and mostly unused memory allocations
82 >   for small datasets.
83 >
84 > IBX Change Log  version (2.5-1 Build 13927) Tue, 6 Dec 2022 23:13:00 +0000
85 >
86 > 1. IBCustomDataset: avoid problem with additions to TFieldType by using a subset instead.
87 >
88 > 2. TIBDynamicGrid: change DrawCellText declaration to comply with laz 2.3.0
89 >
90 > 3. TIBArrayGrid: change DrawCellText declaration to comply with laz 2.3.0
91 >
92 > IBX Change Log  version (2.5-0 Build 13868) Fri, 29 Jul 2022 09:52:01 +0100
93 >
94 > 1. TIBTransaction: new properties
95 >    property TransactionID: integer read GetTransactionID;
96 >    property IsReadOnly: boolean read GetIsReadOnly;
97 >    {published}
98 >    property TransactionName: string read FTransactionName write SetTransactionName;
99 >
100 > 2. IBCustomDataset: per row blob and array buffer cached clear before processing
101 >   Insert or Update...Returning. This allows blobs and arrays to be returned
102 >   by the statement.
103 >
104 > 3. TSQLXMLReader moved from IBXScript to package fbintf unit IBUtils.
105 >
106 > 4. TransactionName initialised to a newly generated GUID if empty.
107 >
108 > 5. New unit: IBJournal. This provides the TIBJournal component which is a wrapper
109 >   for the fbintf package's journaling capability. TIBJournal is used to set the
110 >   file path and filename for the journal file and to Enabled (start journaling) and
111 >   disable (stop journaling). See fbintf/doc/README.ClientSideJournaling.pdf for
112 >   more information, and comments in IBJournal.pas.
113 >
114 > 6. TIBDatabase.InternalTransaction is now a read only transaction.
115 >
116 > 7. Bug fix: blob id no longer set to null on update when blob has not been
117 >   retrieved.
118 >
119 > 8. Row auto refreshed on update/insert if blob or array field updated and field
120 >   not in a returning clause.
121 >
122 > 9. ColumnCount moved from record buffer header to a single per dataset count. Reduces
123 >   buffer overhead and avoids problem when refresh query has a different column
124 >   count to select query i.e. incorrectly changing number of columns.
125 >
126 > 10. IBExtract: support added for UDR Functions, Procedure and Trigger declarations.
127 >
128 > 11. TIBDatabaseInfo. New property FirebirdVersion. This returns the current Firebird version
129 >    string. Note that the Version property returns an InterBase compatible version string.
130 >
131 > 12. IBExtract: ensure sql identifiers returned as a LIST are always quoted.
132 >
133 > IBX Change Log  version (2.5-0 Build 12933) Mon, 29 Nov 2021 14:59:54 +0000
134 >
135 > 1. IBCustomDataset: Modify TISQL component now defaults to GoToFirstRecordOnExecute := true.
136 >   This is for compatibility with Firebird 5 where Update...Returning can return
137 >   a cursor.
138 >
139 > IBX Change Log  version (2.4-3 Build 12886) Sat, 23 Oct 2021 14:58:30 +0100
140 >
141 > 1. Add try-..except check when initially loading library in IDE. This should
142 > ensure that IDE continues to load even when a failure occurs in IBX load
143 > library.
144 >
145 > 2. IBXScript: now recognises a CASE...END block within a stored procedure and
146 >   hence will correctly detect end of the outer containing block when the block
147 >   contains a SELECT ... CASE ... END construct.
148 >
149 > 3. IBExtract: some further tidying up to remove extraneous white space.
150 >
151 > 4. IBCustomDataSet: DefaultFieldClasses array declaration updated to avoid compile time
152 >   errors when extra elements are added to DB.TFieldType.
153 >
154 > 5. IBUpdate: updated to reflect changes to ISQLParam.
155 >
156 > 6. IBXScript: now correctly parses a DECLARE statement which includes a quoted string.
157 >
158 > 7. IBExtract: for ODS >=13, increment generator value by one for ALTER SEQUENCE statement.
159 >
160 > 8. IBSQL: Support for scrollable cursors added (note: local databases only)
161 >
162 > IBX Change Log  version (2.4-2 Build 12773) Mon, 23 Aug 2021 11:59:42 +0100
163 >
164 > 1. TIBDatabaseInfo: review and tidy-up of property types. Most widen to int64 with the
165 >   exception of those defined to be one byte wide e.g. DBImplementationNo.
166 >
167 > 2. TIBSQL: Batch Update/Insert support added.
168 >
169 > 3. TIBStoredProc: when generating the SQL, the value of the StoredProcName property
170 >   is no longer automatically converted to upper case when it is syntactically a
171 >   SQL Identifier. This is to support the use of stored procedures defined e.g.
172 >   as CREATE PROCEDURE "iCASE".
173 >
174 >   There could be a backwards compatibility issue when the StoredProcName was entered
175 >   manually at design time. That is not selected from the drop down list. If the
176 >   StoredProcName is entered in mixed case and the procedure was declared e.g. as
177 >   CREATE PROCEDURE iCASE, then the SQL generation will be incorrect. You should
178 >   ensure that the value of the StoredProcName is all upper case, unless it was
179 >   declared under dialect 3 and explicitly as mixed case (i.e. delimited by double
180 >   quotes).
181 >
182 >   Note that when a stored procedure name was declared delimited in double quotes,
183 >   as in the first example above, the value of the StoredProcName property must not
184 >   include the delimiters (double quotes).
185 >
186 > 4. IBXUpgradeConfFile: an exception is now raised if a patch file specified in
187 >   upgrade.conf was not found. This replaces silently ignoring the problem.
188 >
189 > 5. TIBLocalDBSupport: new property "SectionHeaderTemplate". This defaults to
190 >   'Version.%.3d' and is used to generate the section header names (for a given
191 >   version no.) in the upgrade.conf file.
192 >
193 > IBX Change Log  version (2.4-1 Build 12550) Wed, 23 Jun 2021 13:59:14 +0100
194 >
195 > 1. -c command line option added to fbsql example program. Used to set connection
196 >   character set.
197 >
198 > IBX Change Log  version (2.4-0 Build 12543) Mon, 22 Feb 2021 11:00:08 +0000
199 >
200 > 1. Firebird 4 support added.
201 >
202 > 2. New FB4 data types TIME WITH TIME ZONE, TIMESTAMP WITH TIME ZONE, DECFLOAT and
203 >   extended precision NUMERIC fields are supported.
204 >
205 > 3. TFmtBCDField is used to support access to DECFLOAT and extended precision NUMERIC fields.
206 >
207 > 4. TIBDateTimeField and TIBTimeField are introduced in support of TIMESTAMP WITH TIME ZONE
208 >   and TIME WITH TIME ZONE fields. These inherit from TDateTimeField.
209 >
210 > 5. IBExtract now supports FB4 enhancements:
211 >   - new data types as above
212 >   - Identity column extensions
213 >   - Default user role
214 >   - SQL Security clause for Database, Tables, Procedures, Functions and Triggers
215 >   - Internal Functions
216 >
217 > 6. IBExtract: new event: OnExtractLines.
218 >
219 > 7. IBExtract: revert create trigger to legacy syntax see Firebird CORE-6243, CORE-5545 and DOC-145
220 >
221 > 8. IBXServices: Server version no. parsing now allows any letter before major version number
222 >   and is no longer restricted to 'V' e.g. "LI-T4.0.0.1436 Firebird 4.0 Beta 1"
223 >
224 > 9. TIBDataSet and TIBQuery: new property TZTextOption. Used to determine the default
225 >   format for rendering a time zone.
226 >
227 > 10. TIBDataSet and TIBQuery: new property DefaultTZDate. Used to provide the default date
228 >     to convert TIME WITH TIME ZONE data type values to and from GMT.
229 >
230 > 11. Unit name IBTypes changed to IBInternals. Internal interfaces TIBGUIInterface and TIBTimerInf renamed to
231 >    IIBGUIInterface and IIBTimerInf respectively.
232 >
233 > 12. Constants: DPBPrefix and TPBPrefix moved to IB unit. DPBConstantNames and TPBConstantNames
234 >    now accessible as properties of TIBDatabase and TIBTransaction respectively.
235 >
236 > 13. String Fields: when a fixed character with (CHAR) field is returned, it is now
237 >    truncated to its fixed character width rather than being right padded with
238 >    white space to the maximum data size.
239 >
240 > 14. TIBTable.Empty table. In additional to deleting all records in the underlying
241 >    table, the internal buffers are now also flushed ensuring that the TIBTable is
242 >    also empty.
243 >
244 > 15. TBatchSQLStatementReader: Line buffer is now cleared on call to reset.
245 >
246 > 16. TIBXControlService descendents: DatabaseName may now be set using a database
247 >    connect string. The database name is extracted from the connect string.
248 >
249 > 17. DBControlGrid: Minor bug fixes. avoid AV on form closure, avoid black panel
250 >
251 > 18. TIBExtract: Data type of COMPUTED By columns is no longer included in SQL.
252 >
253 > 19. Local database on Linux and with legacy API and FB 2.5 embedded server: fixed problem with password
254 >    not being present as required.
255 >
256 > 20. IBTreeView split into DBTreeView and IBTreeView. This former is an IBX indepedent
257 >    version that can be customised to work with other database drivers.
258 >
259 > 21. ISQLMonitor: use platform specific LineEnding to delimit messages. Avoids
260 >    unnecessary CR at end of line on Unix platforms.
261 >
262 > 22. ISQLMonitor: Unix: Default semaphore timeout increased from 1 second to 10
263 >    seconds in order to reduce risk of message loss.
264 >
265 > 23. ISQLMonitor: read and write count statistics now available via:
266 >      property TIBSQLMonitor.ReadCount;
267 >      IIBSQLMonitorHook.GetWriteCount: integer;
268 >
269 > 24. ISQLMonitor tidy up and unit split. IPC functions moved to new unit IBIPC.
270 >
271 > IBX Change Log  version (2.3-5 Build 12350) Tue, 25 Aug 2020 16:11:02 +0100
272 >
273 > 1.  TIBStringField: when a string value is read from a dataset buffer, if the
274 >    number of UTF8 characters exceeds the string size then string is truncated
275 >    to the maximum string size. This is  usually a problem with fixed width columns
276 >    right padded with white space.
277 >
278 > 2.  SQLFiltered and SQLFilterParams added to TIBQuery, TIBTable and TIBDataset.
279 >    If SQLFiltered is set then when a dataset is opened, each line in the
280 >    SQLFilterParams property is assumed to be a SQL condition clause and
281 >    ANDed into the Where clause of the SQL Select statement provided as a
282 >    dataset property. Each such SQL condition thus acts as an additional filter
283 >    on the dataset.
284 >
285 > 3.  The Filtered property inherited from TDataset is no longer used for SQL (server
286 >    side filters).
287 >
288 > 4. IBLookupComboEditBox: Selection should no longer reset to start of text when
289 >   text matches complete entry.
290 >
291 > 5. TIBDataLink: Detail Dataset params not refreshed unless both master and detail
292 >   dataset are active (avoids risk of access violation if master is inactive)
293 >
294 > 6. TIBEvents: Registered property can now be set at design time even if database not open
295 >
296 > 7. TIBEvents: component now correctly re-initialised after call to UnregisterEvents.
297 >   This should prevent "spillover" of events between sessions.
298 >
299 > 8. TIBCustomDataset: GetNextRecord now called when reseting to first record of a unidirectional dataset.
300 >   This should ensure that the internal buffer is set up correctly and avoids
301 >   a duplicate initial row.
302 >
303 > 9. TIBStringField: DataSize now given as byte size of string less trailing any zero character.
304 >   That is, the DataSize should be the field size * character set width. The
305 >   value returned by DataSize is now the same as the Dataset buffer size reserved
306 >   for the field.
307 >
308 > 10. IBExtract: Tidyup of SQL generation. Avoid unnecessary double quotes.
309 >
310 > 11. TIBCustomDataset: Add checks on buffer sizes when copying data from row to field buffer
311 >    and vice-versa. This may result in an exception being raised (correctly) for
312 >    older programs when using dataset fields added to a form and the database has been
313 >    upgraded. For example, computed fields can change from 32-bit to 64-bit integers.
314 >    In such cases, the field needs to be deleted in the IDE fields editor and then
315 >    added back in.
316 >
317 > 12. IBCustomDataSet: CanInsert, CanEdit, CanDelete and CanRefresh updated to return
318 >    false if query contains only white space and not just empty.
319 >
320 > 12. IBCustomDataset: Blob data is now cleared when TDataSet.Cancel is called. This
321 >    should ensure that (e.g.) a TDBMemo is correctly refreshed after a dataset edit
322 >    is cancelled.
323 >
324 > 13. IBCustomDataset: SetArrayIntf should no longer cause an access violation if
325 >    called on a null field.
326 >
327 > 14. IBCustomDataSet: An access violation should no longer occur when calling CancelUpdates
328 >    results in an empty dataTC86                Client side Filtered Dataset    1       X
329 > set.
330 >
331 > 15. IBCustomDataSet: OnUpdateError should now be called in all circumstances when
332 >    a cached update is applied and an exception is raised.
333 >
334 > 16. IBCustomDataSet: Avoid access violation when SetBookmarkData called with nil pointer.
335 >
336 > 17. Console Mode Local Database support: backup/restore should now work correctly.
337 >
338 > 18. Local Database Support: if an upgrade fails, a downgrade is now performed if
339 >    possible and an exception raised.
340 >
341 > 19. MinimumVersionNo added to Local Database Support. Database will not open if
342 >    below this version no. and upgrade not possible.
343 >
344 > IBX Change Log  version (2.3-4 Build 12041) Fri, 17 Apr 2020 14:00:32 +0100
345 >
346 > 1.  TIBXDataSet and Generators: Generator Names that are not all upper case or
347 >    not SQL Identifiers are now supported.
348 >
349 > 2.  TIBXScript: Set Generator is no longer rejected as unrecognised SQL and is
350 >    passed to the Firebird engine for execution.
351 >
352 > 3.  TIBDataSet: Unidirectional datasets now give an error message if an attempt
353 >    is made to scroll back.
354 >
355 > 4.  New unit: IBMessages.pas. Contains only messages used by IBX and not FBIntf
356 >
357 > 5. TIBLookupComboEditBox: When generating auto-complete SQL, the ListField is now
358 >   only enclosed in double quotes in SQL dialect 3 and when it needs to be.
359 >
360 > 6. TIBLookupComboEditBox: when the list source opens, the ListField name is now
361 >   validated. If no match is found in the list of field names and the database has
362 >   been opened in SQL Dialect 3, then the ListField Name is converted to upper case
363 >   if it then matches a field name. Otherwise, a Listfield not valid exception occurs.
364 >
365 > 7. IBGeneratoreditor.pas: Add missing parenthesis around "IS" statement for compliance
366 >   with fpc 3.2.
367 >
368 > IBX Change Log  version (2.3-3 Build 11512) Fri, 28 Dec 2018 10:04:17 +0000
369 >
370 >
371 > 1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
372 >   and is used to override the default settings in the client side "firebird.conf" This
373 >   includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
374 >   Each line of the string list should be a setting in the same format as "firebird.conf".
375 >   For example "WireCompression = true" in order to request wire compression on the client side.
376 >
377 >   Note: explicit settings in the client side "firebird.conf" appear to take precedence
378 >   over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
379 >   also require a compatible setting in the server side "firebird.conf". For example
380 >   "WireCompression = true" must also be set in the server's "firebird.conf" for wire
381 >   compression to be used.
382 >
383 >   Whether or not WireCompression or WireCrypt are in use can be checked using the information
384 >   returned with the Client/Server protocol version. See ibx/examples/dbadmin and
385 >   ibx/examples/dbinfo for examples of how to display this information.
386 >
387 > 2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
388 >   is a "convenience" property. If set the "WireCompression=true" is added to the
389 >   ConfigOverrides. If unchecked then this setting is removed.
390 >
391 > 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
392 >   not "INT64".
393 >
394 > 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
395 >   These are:
396 >    property TimestampFormat: string;
397 >    property DateFormat: string;
398 >    property TimeFormat: string;
399 >
400 >   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
401 >   DATETIME and TIME. The format strings use the standard FPC date/time format
402 >   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
403 >
404 >   If any of the above properties are set to an empty string, then the locale default
405 >   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
406 >   locale default is extended by appending '.zzz' to include milliseconds.
407 >
408 >   TIBCSVDataOut by default sets these properties to the empty string, while the other
409 >   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
410 >
411 > 5. New published property for TIBCSVDataOut:
412 >     property QuoteStrings: boolean (default true)
413 >
414 >   If false then strings are unquoted, otherwise, the QuoteChar property value is
415 >   used to delimit each and every string in the output.
416 >
417 > 6. New published properties for TIBCSVDataOut:
418 >    property FieldSeparator: string;
419 >    property HeaderSeparator: string;
420 >
421 >   Respectively, these provide the separator character(s) used to separate fields
422 >   in data and header rows. Both default to ','.
423 >
424 > 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
425 >    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
426 >    property OnFormatTextString;
427 >
428 >   This event handler can be used to process text strings before they are included
429 >   in the output e.g. to replace unprintable characters with alternative strings.
430 >   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
431 >
432 > 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
433 >   Uses "FindParam" if in order to find out if a parameter with a given name exists
434 >   and without raising and exception if it does not.
435 >
436 > 9. TIBQuery now uses IBX SQL Parser instead of the TParams SQL parser in order to ensure
437 >   consistency with SQL queries.
438 >
439 > 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
440 >    When true, SQL statement parameter names are parsed case sensitive. Note for
441 >    TIBDataSet only applies to Select query.
442 >
443 > 11. IBEvents: removing a TIBEvent component from a form should no longer result in
444 >    an IDE exception.
445 >
446 > 12. LocalDBSupport: initial database creation should now work correctly
447 >    when the schema source is an sql file.
448 >
449 > 13. TIBCMLocalDBSupport: new event handler "property OnProgressEvent: TOnProgressEvent"
450 >    when defined, this handler will be called by the internal TIBXScript during
451 >    initial database creation when the schema source is an sql file and may be used
452 >    to provide a visual indication of progress in console mode.
453 >
454 > 14. TCustomIBLocalDBSupport: new public property "InOnCreateDB: boolean". This is set
455 >    to true while a new local database is being created and its schema populated.
456 >    Useful in (e.g.) TIBDatabase.OnAfterConnect handler to suppress actions
457 >    when the database is disconnected/connected during the create DB procedure.
458 >
459 > 15. TIBXScript: any User/password parameters found in a CREATE DATABASE statement
460 >    are now always ignored and replaced by the user name and password provided as
461 >    the login parameters for the TIBDatabase referenced from the TIBXScript. The
462 >    IgnoreCreateDatabase property still applies and the CREATE DATABASE statement is
463 >    completely ignored if this property is true.
464 >
465 > 16. Code tidyup in IBTreeView: Node properties initialisation moved from TIBTreeView.AddNodes
466 >    to TIBTreeView.Added. An OnAddition event handler is no longer needed to initialise
467 >    ImageIndex and SelectImageIndex values on AddNode.
468 >
469 > 17. TIBDatabase.Attachment and TIBXServicesConnection.ServicesIntf properties are now
470 >    read/write. This should enabled (e.g.) multiple instances of TIBDatabase to share
471 >    the same database connection.
472 >
473 > 18. TIBDataSet and TIBQuery now support the TDataSet "Filter" property.
474 >    if provided, this should be an conditional SQL expression suitable for
475 >    including in an SQL Select statement "where" clause. If non-empty and the
476 >    "Filtered" property is true then the SQL expression provided as the value of
477 >    the "Filter" property is "ANDed" with any existing condition statement
478 >    in the SQL statement's "Where" clause.
479 >
480 >    If the "Filter" property is set at run time, the "Filtered" property is true
481 >    and the dataset is already open, then the dataset is closed and re-opened automatically.
482 >
483 >    The "Filter" condition may include IBX style parameters. In which case, their
484 >    value must be set by the dataset's "OnBeforeOpen" event handler.
485 >
486 >    This is a public property for TIBDataSet and TIBQuery query and intended for
487 >    use at run time.
488 >
489 >    Note: The property is a published property of TIBTable. The TIBTable functionality
490 >    is unaffected by this change.
491 >
492 > IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
493 >
494 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
495 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
496 >   mode apps.
497 >
498 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
499 >   statement. This avoids problems if "Execute Block" is used as the Query.
500 >
501 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
502 >   internal SQL tokeniser routines.
503 >
504 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
505 >   as a select statement, with or without CTEs.
506 >
507 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
508 >
509 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
510 >   internal SQL tokeniser routines.
511 >
512 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
513 >    being raised for valid set statements processed by a data formatter.
514 >
515 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
516 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
517 >   the path of the Firebird Library used by the database/services connection.
518 >
519 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
520 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
521 >   services connection.
522 >
523 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
524 >   or param name is not a valid SQL identifier.
525 >
526 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
527 >    view of whether the text box should be editable when no DataSource is specified.
528 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
529 >    ReadOnly is false, the text box is editable when no DataSource is specified.
530 >
531 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
532 >    the FBLIB environment variable. If you do not want to permit this then you
533 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
534 >    this setting.
535 >
536 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
537 >
538 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
539 >   Utf8EscapeControlChars
540 >
541 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
542 >
543 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
544 > all previous copies of the IBX source code tree before installing this release.
545 >
546 > The IBX packages used by most users have not changed, with one exception. The
547 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
548 > to use the IBServices unit in your applications, please add the iblegacyServices
549 > to the list of dependencies. To do this, open the Project Inspector and select
550 > Add->New Requirement and select "ibLegacyServices" from the list of available
551 > packages.
552 >
553 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
554 >   the IBServices unit providing what is intended to be a clearer and easier to
555 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
556 >   more information and the guide to "Firebird Service Management Using IBX".
557 >   As indicated above, the legacy services components are still available and
558 >   provided in a separate package. There is no need to update working applications
559 >   using the older versions except for an additional package dependency.
560 >
561 > 2. The IBX packages and source code tree have been re-organised in an attempt to
562 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
563 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
564 >   new set of IBX packages.
565 >
566 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
567 >   updated to use the new Services API components.
568 >
569 > 4. The iblocal package has been updated to use the new Services API components.
570 >
571 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
572 >   TIBXSecurityService. It had been wrongly classified in the previous version
573 >   as a per database configuration item. It is global to a server and hence
574 >   correctly positioned as part of the Security Package. In the DBAdmin example,
575 >   the setting has moved to the mappings page.
576 >
577 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
578 >   are ignored.
579 >
580 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
581 >   closed before the database is dropped. Before and After Disconnect event handlers
582 >   are also fired.
583 >
584 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
585 >   is started and not just the first time.
586 >
587 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
588 >   depenendency with comp type.
589 >
590 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
591 >
592 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
593 >    then this is recognised and not ignored.
594 >
595 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
596 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
597 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
598 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
599 >
600 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
601 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
602 >    counters for the select query. Note: stats accumulate after each fetch from
603 >    the database. To get total query cost after open, call the "Last" method
604 >    and then GetPerfStatistics.
605 >
606 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
607 >
608 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
609 >    in parenthesises.
610 >
611 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
612 >    SQL identifiers are always delimited by double quotes. If false, then they are
613 >    only delimited if the identifier is a reserved word, contains lower case or special
614 >    characters. Set this property to true to retain previous behaviour.
615 >
616 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
617 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
618 >
619 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
620 >       property MasterDetailDelay: integer {defaults to zero}
621 >
622 >    When non-zero and the dataset is a detail table referencing a master table
623 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
624 >    then a synchronisation delay is added (in milliseconds) between the master
625 >    row changing and the detail dataset being re-opened. If the master dataset
626 >    is scrolled before the delay expires then the delay is reset. This can be used
627 >    to avoid performance overheads when scrolling through a large master dataset.
628 >
629 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
630 >    chreads unit must be included in your project. TTimer is not used in order
631 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
632 >
633 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
634 >    with Extract Option eoDatabase.
635 >
636 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
637 >    When a deLayoutChanged event is reported on the ListSource dataset, the
638 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
639 >    relationship with the control's datasource (master).
640 >
641 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
642 >
643 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
644 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
645 >
646 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
647 >    DDL (Firebird 3 and later only).
648 >
649 > 22. TIBLookupComboBox Autocomplete Fixes:
650 >    i. Only appended text is now selected after autocomplete.
651 >    ii. Uppercase keys no longer ignored for autocomplete.
652 >    iii. Retain Prefix case is now honoured correctly.
653 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
654 >        before autocomplete performed. i.e. behaviour now the same as when
655 >        no DataSource assigned.
656 >
657 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
658 >    between SQL statements.
659 >
660 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
661 >    ObjectNames are converted to upper case before matching against metadata object
662 >    names, unless the objectname is delimited by double quotes, in which case, the
663 >    double quotes are removed and the remaining string is used (unmodified) to match
664 >    against the metadata object name.
665 >
666 >    If true then the ObjectName is used as is without modification and matched
667 >    against the metadata object name. No attempt is made to remove double quotes.
668 >
669 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
670 >    with eoTrigger, these extract types can be used to select only Database Triggers,
671 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
672 >
673 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
674 >    statement separate character is now reset to the default (';').
675 >
676 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
677 >
678 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
679 >    a commit or reconnect statement and instead activated only when next SQL statement
680 >    is executed.
681 >
682 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
683 >
684 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
685 >    converting statement to upper case.
686 >
687 > 31. TIBExtract: metadata comments now supported. New published property
688 >    IncludeMetaDataComments (default true). If true then metadata comments included
689 >    in extracted DDL. New Extract Object member eoComments. This may be used with
690 >    ExtractObject method to list all metadata comments.
691 >
692 > 32. TIBExtract: ListObjectNames method added.
693 >
694 > 33. Updated Database component editor to support additional connection string
695 >    types.
696 >
697 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
698 >
699 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
700 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
701 > RELEASE.
702 >
703 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
704 >
705 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
706 >
707 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
708 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
709 >   information). However, this is also a very useful mechanism for returning updated computed by
710 >   column values. Values returned as a result of executing an Insert or Update statement
711 >   replace existing values in the current row for each corresponding column.
712 >
713 >   Previously, if a dataset's select query included read only (computed by) fields then
714 >   an automatic row refresh was performed after an insert or update query had been processed,
715 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
716 >   that an automatic refresh is no longer performed if an insert or update query contains
717 >   a returning clause that updates one or more fields on the current row. A full row
718 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
719 >   field values and the select query contains read only fields. Use of Insert/update
720 >   returning should be significantly more efficient than executing a refresh query.
721 >
722 >   This behaviour change is intended to be backwards compatible and there should be no need to change
723 >   existing programs, other than to improve performance by using the new capability.
724 >
725 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
726 >   they are called when the dataset row is being deleted, there is no value in
727 >   updating the current record from the query result. Instead, a new event handler
728 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
729 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
730 >   by the query. The event handler can then interrogate the query results and
731 >   perform whatever action is necessary. For example to confirm, to the user,
732 >   the deletion of a row with the returned values.
733 >
734 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
735 >   any Computed By or Identity Columns. The IBTables example has been updated to
736 >   illustrate the computation of the employee Full Name on update.
737 >
738 > 5. TIBTable: The GeneratorField property is now published.
739 >
740 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
741 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
742 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
743 >   each Identity column after the insert is executed.
744 >
745 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
746 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
747 >   Insert..Returning clause.
748 >
749 > 8. TIBGenerator: small performance improvement by not preparing query each time
750 >   a new value is generated.
751 >
752 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
753 >
754 > 10. Property editors will now sync table name to a System Table when "Include System
755 >    Tables" is selected and the query is for a System Table.
756 >
757 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
758 >    values are no longer converted to milliseconds from TDateTime and then back again
759 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
760 >
761 > 12. Property Editors handling of Stored Procedures.
762 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
763 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
764 >      query).
765 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
766 >
767 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
768 >    can be used to select a package. If non-empty, the stored procedure name is
769 >    expected to be a stored procedure defined in the specified package and the
770 >    generated SQL will be as required for a stored procedure located in a package.
771 >
772 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
773 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
774 >    which a stored procedure can be selected. With no package name selected, non-package
775 >    stored procedures are listed.
776 >
777 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
778 >    for password on reconnect.
779 >
780 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
781 >    and character set name.
782 >
783 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
784 >    DB info lookups"
785 >
786 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
787 >
788 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
789 >
790 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
791 >    parameters. This stops an exception being raised when the field cannot be
792 >    located in the record buffer.
793 >
794 > 21. Property Editors now automatically include System Tables when opened and when the query table
795 >    is a System Table.
796 >
797 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
798 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
799 >
800 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
801 >    add the SPB item isc_spb_expected_db. This names a database using
802 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
803 >    database. examples/services re-written to illustrate use of "expected_db".
804 >
805 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
806 >    This avoids truncated backups when the server returns a timeout (busy) response.
807 >
808 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
809 >
810 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
811 >    databasenames. These are respectively expanded to the local system's temp directory
812 >    (including trailing delimiter) or to a prescribed data directory (including
813 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
814 >    in the user's home directory. The hidden directory name is either the string returned
815 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
816 >    Under Windows, the directory is the same as the Data Directory as decribed
817 >    above but instead prefixed by the User's application data path. These may be
818 >    used to improve application portability for Personal Databases.
819 >
820 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
821 >    this has not worked for a long time and is not useful either. FieldDefs should be
822 >    managed using the Fields Editor as with any other dataset. To access the fields
823 >    editor for a TIBTable component, double click on the component. The fields editor
824 >    is then displayed.
825 >
826 > 28. TIBDatabaseInfo: new properties/function
827 >     * DateDBCreated (returns date/time database created)
828 >     * TransactionCount (returns no. of active transactions)
829 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
830 >     * PagesFree (Firebird 3 or later)
831 >     * PagesUsed (Firebird 3 or later)
832 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
833 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
834 >
835 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
836 >
837 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
838 >
839 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
840 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
841 >
842 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
843 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
844 >    firing during backup and restore.
845 >
846 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
847 >    for verbose output using the new property "StatisticsRequested".
848 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
849 >
850 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
851 >
852 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
853 >    palette. This uses the online validation feature added in Firebird 2.5. The
854 >    services's properties enable inclusion/exclusion of tables and indexes using
855 >    regular expressions. See.
856 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
857 >
858 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
859 >    option on a database.
860 >
861 > 37. TIBCustomService: Assign method implemented to allow copying of service login
862 >    context between service API components. "Detach" method now only detaches
863 >    service when last reference to the service interface detaches. Tidy up of
864 >    code for SetActive and Attach methods including password hiding.
865 >
866 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
867 >    and used to determine the auth method and protocol used for the connection.
868 >
869 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
870 >    a Create Database Statement generated by IBX.
871 >
872 > 40. All IBServices now have an additional published property "PortNo". This may
873 >    be set to a non-standard port number when necessary. If zero then the default
874 >    port number is used.
875 >
876 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
877 >    and not just the mouse.
878 >
879 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
880 >
881 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
882 >    image index and selected image index for each node to be set from a database field.
883 >
884 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
885 >    then database schema includes grants to all users. If not present then the
886 >    only user grants included are those to User PUBLIC.
887 >
888 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
889 >    and child nodes in dataset.
890 >
891 >
892 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
893 >
894 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
895 >   changes.
896 >
897 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
898 >   Bug could result in truncated multi-byte character set values.
899 >
900 > 3. Changes consequential on moving fbintf character set utility functions from
901 >   IFirebirdAPI to IAttachment.
902 >
903 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
904 >
905 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
906 >   results in autocomplete ignoring prefix text.
907 >
908 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
909 >   entering a new name into the text box.
910 >
911 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
912 >   Firebird rather than recomputing it.
913 >
914 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
915 >   screen centre. Previously some were "poDesigned" which may be inappropriate
916 >   for multi monitor desktops.
917 >
918 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
919 >
920 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
921 >    a transaction and always reset the object.
922 >
923 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
924 >
925 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
926 >
927 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
928 >    to a gbak format archive.
929 >
930 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
931 >
932 > 16. IBLocaldb: Drop database if error creating an empty database.
933 >
934 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
935 >    unless selected node not in current dataset.
936 >
937 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
938 >    to TIBCustomService, and IBlocalDB code tidy up.
939 >
940 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
941 >    behaviour due to uninitialised variable.
942 >
943 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
944 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
945 >
946 > 21. IBSQL: When Database changed ensure that all resources are freed.
947 >
948 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
949 >
950 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
951 >    * Line Wrap on SQL Token boundaries (on user command)
952 >    * auto-complete table names in drop down list of table names
953 >    * Double click on tablename or field name adds to SQL text
954 >
955 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
956 >
957 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
958 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
959 >    workaround for a problem in fpc 3.0.4 win64).
960 >
961 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
962 >
963 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
964 >
965 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
966 >
967 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
968 >   include remote system name.
969 >
970 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
971 >   tables when data included in output.
972 >
973 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
974 >   and timing information to be written to stdout. This may be used to locate
975 >   performance bottlenecks.
976 >
977 > 4. SQLParser: only call "OnChanging" event handler when value is different.
978 >
979 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
980 >
981 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
982 >   that BindFields is called when the query is next activated. Avoids FieldName
983 >   not found error.
984 >
985 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
986 >   purpose and allows the programmer to define any action they want for Update, Insert
987 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
988 >   filtering of updates, or use of statements such as Grant or Revoke instead of
989 >   normal DML. See User Manual for more information.
990 >
991 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
992 >
993 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
994 >
995 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
996 >
997 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
998 >   hexadecimal notation.
999 >
1000 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
1001 >   using a simple XML format.
1002 >
1003 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
1004 >   grants to these objects.
1005 >
1006 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
1007 >   dependency problems restoring complex databases.
1008 >
1009 > 7. TIBXScript: This component has been restructured to allow for the processing of
1010 >   embedded XML in INSERT statements and to support interactive sources in addition
1011 >   to non-interactive data sources such as files.
1012 >
1013 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
1014 >
1015 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
1016 >   SET SQL DIALECT
1017 >   SET TERM
1018 >   SET AUTODDL
1019 >   SET BAIL
1020 >   SET ECHO
1021 >   SET COUNT
1022 >   SET STATS
1023 >   SET NAMES <character set>
1024 >
1025 > 10. IBVersion unit added to hold current IBX Version Number information.
1026 >
1027 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
1028 >    and domain definitions.
1029 >
1030 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
1031 >    fully supported.
1032 >
1033 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
1034 >
1035 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
1036 >
1037 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
1038 >
1039 > See also doc/IBX4LazarusGuide.pdf for important information on
1040 > upgrading to IBX2.
1041 >
1042 > 1. Size property of TIBStringField is now the width in characters of the field
1043 >   and not the byte length. This applies only to multi-byte character sets such
1044 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
1045 >   code is not recognised as a bug and hence this change to align the behaviour.
1046 >   The TStringField change is expected in fpc 3.2.0.
1047 >
1048 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
1049 >   true (default) then Size property value saved in the lfm is ignored. Size is
1050 >   always set from the dynamic information read from the database. It is unclear
1051 >   why anyone would want to override this and set Size to false.
1052 >
1053 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
1054 >   block.
1055 >
1056 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
1057 >   exist when an attempt is made to connect to it (run time only) then an attempt
1058 >   is made to create the database.
1059 >
1060 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
1061 >   has been successfully created as a result of a call to CreateDatabase or when
1062 >   creating a database after it was found not to exist.
1063 >
1064 > 6.  DBControlGrid: a race condition could result in the wrong row image being
1065 >    written to the cache. This has been avoided by a trip round the message
1066 >    loop before rendering the row image.
1067 >
1068 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
1069 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
1070 >    known to risk corrupt rendering of row images when the control is first
1071 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
1072 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
1073 >
1074 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
1075 >    a TDateEdit control located on an editor panel.
1076 >
1077 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
1078 >
1079 > 10. DBControlGrid: Removed memory leak when updating rows.
1080 >
1081 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
1082 >
1083 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
1084 >
1085 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
1086 >   when target codepage is CP_NONE. This is a workaround for
1087 >   http://bugs.freepascal.org/view.php?id=30622.
1088 >
1089 > 2. DBLog option removed from TIBStatisticalService - not supported by server
1090 >   since Firebird 1.5.
1091 >
1092 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
1093 >   similar.
1094 >
1095 > 4. IBCodePage: updated mapping between codepages and character id.
1096 >
1097 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
1098 >   Firebird. Character sets with a char width of two are not UTF16.
1099 >
1100 > 6. Strings received from the database are now always transliterated into UTF8
1101 >   regardless of the database character set or connection character set. This
1102 >   is for compatibility with the LCL.
1103 >
1104 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
1105  
1106   1. IBBlob: Defer reading of blob until read method called. This avoids having to
1107     read in an entire blob just to get the size of the blob. General performance

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