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Revision 416 by tony, Mon Jul 24 08:32:01 2023 UTC

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1 < IBX Change Log  version                      (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1 > IBX Change Log  version (2.6-2 Build 13992) Mon, 24 Jul 2023 09:26:32 +0100
2 >
3 > 1. Fixed repeated "type" keyword in IBBufferCursors. This may cause a compile error
4 >   with later versions of fpc - later than 3.2.2.
5 >
6 > IBX Change Log  version (2.6-1 Build 13985) Mon, 17 Jul 2023 14:16:41 +0100
7 >
8 > 1. Maintenance update of 2.6.0. This version is still at beta.
9 >
10 > 2. Reverse out changes to DrawCellText signature in IBArrayGrid and IBDynamic Grid.
11 >   See https://gitlab.com/freepascal.org/lazarus/lazarus/-/commit/53aaae9c5e2a5edac5b1d2f70739a8ef7b0a9623
12 >
13 > 3. ibxscript: When parsing a store procedure or function with a variable name
14 >   enclosed in doublequotes, the double quotes are no longer removed.
15 >
16 > IBX Change Log  version (2.6-0 Build 13976) Thu, 22 Jun 2023 13:49:22 +0100
17 >
18 > NOTE: THIS VERSION RE-WRITES THE INTERNAL BUFFER MANAGER AND SHOULD BE CONSIDERED
19 >      AS BETA SOFTWARE. EVEN THOUGH IT HAS PASSED ALL REGRESSION TESTS, IT CANNOT
20 >      BE ASSUMED TO BE PRODUCTION READY UNTIL WIDER USE. PLEASE REPORT ANY
21 >      ISSUES TO support@mwasoftware.co.uk
22 >
23 > 1. Complete rewrite of internal buffer management in order to improve performance
24 >   and maintainability. Highlights:
25 >
26 >   * Extending the size of the buffer pool no longer has to copy the entire record
27 >     cache. Instead, a new extent is simply added to the buffer pool.
28 >   * A memory to memory copy of each display buffer now is avoided when scolling the
29 >     dataset.
30 >   * A separate set of buffers is now used for calculated fields. This avoids
31 >     having to keep copies of calculated field values in the buffer cache.
32 >   * Compact bitmaps are used to record null status and need to refresh in each
33 >     buffer.
34 >   * Display buffer type changed from PChar to TRecordBuffer in line with change of
35 >     buffer type in FCL-DB.
36 >
37 > 2. TIBUpdateSQL: changes to SQL text will close linked dataset if open. This is
38 >   to ensure same behaviour as TIBDataset, TIBTable and TIBStoredProcedure.
39 >
40 > 3. TField Provider Flags: pfRefreshOnInsert and pfRefreshOnUpdate are now supported.
41 >   If either or both of these flags are set at design time (using the fields editor)
42 >   then this forces a row refresh on respectively insert or update, or both, when the
43 >   corresponding field is not present in an SQL RETURNING clause.
44 >
45 > 4. TIBCustomDataset.FieldDefsFromQuery moved to a helper class (TFieldDefsMaker) in order to improve
46 >   maintainability and readability and to add identification of primary key fields.
47 >
48 > 5. TIBQuery, TIBDataset and TIBTable. Traditionally, IBX has implemented the Refresh method
49 >   as a refresh of the current row. However, this is different behaviour to that described
50 >   in the FPC documentation for TDataset.Refresh which is described as "refetches the data in
51 >   the dataset from the underlying database, and attempts to reposition the cursor on
52 >   the same record as it was". IBX now complies with the FPC definition of Refresh.
53 >
54 > 6. A progammatic Row Refresh should no longer be required.
55 >   Use Insert/Update... returning to refresh any fields that may change following an
56 >   insert or update i.e. Identify fields on Insert only, Computed By, Blob and array fields
57 >   on both. If there are any other fields (e.g. updated by triggers) set the appropriate ProviderFlag
58 >   for the field at Design Time to force a row refresh if not in the returning clause.
59 >
60 > 7. It should now be possible to insert a row into an empty unidirectional dataset.
61 >
62 > 8. New TIBQuery, TIBDataSet and TIBTable property: BufferChunksInFirstBlock (default 50).
63 >   This gives the number of buffers in the initial block for the buffer pool in
64 >   bi-directional datasets. BufferChunks (default 1000) gives the number of buffers
65 >   in subsequent buffer pool blocks. This avoids large and mostly unused memory allocations
66 >   for small datasets.
67 >
68 > IBX Change Log  version (2.5-1 Build 13927) Tue, 6 Dec 2022 23:13:00 +0000
69 >
70 > 1. IBCustomDataset: avoid problem with additions to TFieldType by using a subset instead.
71 >
72 > 2. TIBDynamicGrid: change DrawCellText declaration to comply with laz 2.3.0
73 >
74 > 3. TIBArrayGrid: change DrawCellText declaration to comply with laz 2.3.0
75 >
76 > IBX Change Log  version (2.5-0 Build 13868) Fri, 29 Jul 2022 09:52:01 +0100
77 >
78 > 1. TIBTransaction: new properties
79 >    property TransactionID: integer read GetTransactionID;
80 >    property IsReadOnly: boolean read GetIsReadOnly;
81 >    {published}
82 >    property TransactionName: string read FTransactionName write SetTransactionName;
83 >
84 > 2. IBCustomDataset: per row blob and array buffer cached clear before processing
85 >   Insert or Update...Returning. This allows blobs and arrays to be returned
86 >   by the statement.
87 >
88 > 3. TSQLXMLReader moved from IBXScript to package fbintf unit IBUtils.
89 >
90 > 4. TransactionName initialised to a newly generated GUID if empty.
91 >
92 > 5. New unit: IBJournal. This provides the TIBJournal component which is a wrapper
93 >   for the fbintf package's journaling capability. TIBJournal is used to set the
94 >   file path and filename for the journal file and to Enabled (start journaling) and
95 >   disable (stop journaling). See fbintf/doc/README.ClientSideJournaling.pdf for
96 >   more information, and comments in IBJournal.pas.
97 >
98 > 6. TIBDatabase.InternalTransaction is now a read only transaction.
99 >
100 > 7. Bug fix: blob id no longer set to null on update when blob has not been
101 >   retrieved.
102 >
103 > 8. Row auto refreshed on update/insert if blob or array field updated and field
104 >   not in a returning clause.
105 >
106 > 9. ColumnCount moved from record buffer header to a single per dataset count. Reduces
107 >   buffer overhead and avoids problem when refresh query has a different column
108 >   count to select query i.e. incorrectly changing number of columns.
109 >
110 > 10. IBExtract: support added for UDR Functions, Procedure and Trigger declarations.
111 >
112 > 11. TIBDatabaseInfo. New property FirebirdVersion. This returns the current Firebird version
113 >    string. Note that the Version property returns an InterBase compatible version string.
114 >
115 > 12. IBExtract: ensure sql identifiers returned as a LIST are always quoted.
116 >
117 > IBX Change Log  version (2.5-0 Build 12933) Mon, 29 Nov 2021 14:59:54 +0000
118 >
119 > 1. IBCustomDataset: Modify TISQL component now defaults to GoToFirstRecordOnExecute := true.
120 >   This is for compatibility with Firebird 5 where Update...Returning can return
121 >   a cursor.
122 >
123 > IBX Change Log  version (2.4-3 Build 12886) Sat, 23 Oct 2021 14:58:30 +0100
124 >
125 > 1. Add try-..except check when initially loading library in IDE. This should
126 > ensure that IDE continues to load even when a failure occurs in IBX load
127 > library.
128 >
129 > 2. IBXScript: now recognises a CASE...END block within a stored procedure and
130 >   hence will correctly detect end of the outer containing block when the block
131 >   contains a SELECT ... CASE ... END construct.
132 >
133 > 3. IBExtract: some further tidying up to remove extraneous white space.
134 >
135 > 4. IBCustomDataSet: DefaultFieldClasses array declaration updated to avoid compile time
136 >   errors when extra elements are added to DB.TFieldType.
137 >
138 > 5. IBUpdate: updated to reflect changes to ISQLParam.
139 >
140 > 6. IBXScript: now correctly parses a DECLARE statement which includes a quoted string.
141 >
142 > 7. IBExtract: for ODS >=13, increment generator value by one for ALTER SEQUENCE statement.
143 >
144 > 8. IBSQL: Support for scrollable cursors added (note: local databases only)
145 >
146 > IBX Change Log  version (2.4-2 Build 12773) Mon, 23 Aug 2021 11:59:42 +0100
147 >
148 > 1. TIBDatabaseInfo: review and tidy-up of property types. Most widen to int64 with the
149 >   exception of those defined to be one byte wide e.g. DBImplementationNo.
150 >
151 > 2. TIBSQL: Batch Update/Insert support added.
152 >
153 > 3. TIBStoredProc: when generating the SQL, the value of the StoredProcName property
154 >   is no longer automatically converted to upper case when it is syntactically a
155 >   SQL Identifier. This is to support the use of stored procedures defined e.g.
156 >   as CREATE PROCEDURE "iCASE".
157 >
158 >   There could be a backwards compatibility issue when the StoredProcName was entered
159 >   manually at design time. That is not selected from the drop down list. If the
160 >   StoredProcName is entered in mixed case and the procedure was declared e.g. as
161 >   CREATE PROCEDURE iCASE, then the SQL generation will be incorrect. You should
162 >   ensure that the value of the StoredProcName is all upper case, unless it was
163 >   declared under dialect 3 and explicitly as mixed case (i.e. delimited by double
164 >   quotes).
165 >
166 >   Note that when a stored procedure name was declared delimited in double quotes,
167 >   as in the first example above, the value of the StoredProcName property must not
168 >   include the delimiters (double quotes).
169 >
170 > 4. IBXUpgradeConfFile: an exception is now raised if a patch file specified in
171 >   upgrade.conf was not found. This replaces silently ignoring the problem.
172 >
173 > 5. TIBLocalDBSupport: new property "SectionHeaderTemplate". This defaults to
174 >   'Version.%.3d' and is used to generate the section header names (for a given
175 >   version no.) in the upgrade.conf file.
176 >
177 > IBX Change Log  version (2.4-1 Build 12550) Wed, 23 Jun 2021 13:59:14 +0100
178 >
179 > 1. -c command line option added to fbsql example program. Used to set connection
180 >   character set.
181 >
182 > IBX Change Log  version (2.4-0 Build 12543) Mon, 22 Feb 2021 11:00:08 +0000
183 >
184 > 1. Firebird 4 support added.
185 >
186 > 2. New FB4 data types TIME WITH TIME ZONE, TIMESTAMP WITH TIME ZONE, DECFLOAT and
187 >   extended precision NUMERIC fields are supported.
188 >
189 > 3. TFmtBCDField is used to support access to DECFLOAT and extended precision NUMERIC fields.
190 >
191 > 4. TIBDateTimeField and TIBTimeField are introduced in support of TIMESTAMP WITH TIME ZONE
192 >   and TIME WITH TIME ZONE fields. These inherit from TDateTimeField.
193 >
194 > 5. IBExtract now supports FB4 enhancements:
195 >   - new data types as above
196 >   - Identity column extensions
197 >   - Default user role
198 >   - SQL Security clause for Database, Tables, Procedures, Functions and Triggers
199 >   - Internal Functions
200 >
201 > 6. IBExtract: new event: OnExtractLines.
202 >
203 > 7. IBExtract: revert create trigger to legacy syntax see Firebird CORE-6243, CORE-5545 and DOC-145
204 >
205 > 8. IBXServices: Server version no. parsing now allows any letter before major version number
206 >   and is no longer restricted to 'V' e.g. "LI-T4.0.0.1436 Firebird 4.0 Beta 1"
207 >
208 > 9. TIBDataSet and TIBQuery: new property TZTextOption. Used to determine the default
209 >   format for rendering a time zone.
210 >
211 > 10. TIBDataSet and TIBQuery: new property DefaultTZDate. Used to provide the default date
212 >     to convert TIME WITH TIME ZONE data type values to and from GMT.
213 >
214 > 11. Unit name IBTypes changed to IBInternals. Internal interfaces TIBGUIInterface and TIBTimerInf renamed to
215 >    IIBGUIInterface and IIBTimerInf respectively.
216 >
217 > 12. Constants: DPBPrefix and TPBPrefix moved to IB unit. DPBConstantNames and TPBConstantNames
218 >    now accessible as properties of TIBDatabase and TIBTransaction respectively.
219 >
220 > 13. String Fields: when a fixed character with (CHAR) field is returned, it is now
221 >    truncated to its fixed character width rather than being right padded with
222 >    white space to the maximum data size.
223 >
224 > 14. TIBTable.Empty table. In additional to deleting all records in the underlying
225 >    table, the internal buffers are now also flushed ensuring that the TIBTable is
226 >    also empty.
227 >
228 > 15. TBatchSQLStatementReader: Line buffer is now cleared on call to reset.
229 >
230 > 16. TIBXControlService descendents: DatabaseName may now be set using a database
231 >    connect string. The database name is extracted from the connect string.
232 >
233 > 17. DBControlGrid: Minor bug fixes. avoid AV on form closure, avoid black panel
234 >
235 > 18. TIBExtract: Data type of COMPUTED By columns is no longer included in SQL.
236 >
237 > 19. Local database on Linux and with legacy API and FB 2.5 embedded server: fixed problem with password
238 >    not being present as required.
239 >
240 > 20. IBTreeView split into DBTreeView and IBTreeView. This former is an IBX indepedent
241 >    version that can be customised to work with other database drivers.
242 >
243 > 21. ISQLMonitor: use platform specific LineEnding to delimit messages. Avoids
244 >    unnecessary CR at end of line on Unix platforms.
245 >
246 > 22. ISQLMonitor: Unix: Default semaphore timeout increased from 1 second to 10
247 >    seconds in order to reduce risk of message loss.
248 >
249 > 23. ISQLMonitor: read and write count statistics now available via:
250 >      property TIBSQLMonitor.ReadCount;
251 >      IIBSQLMonitorHook.GetWriteCount: integer;
252 >
253 > 24. ISQLMonitor tidy up and unit split. IPC functions moved to new unit IBIPC.
254 >
255 > IBX Change Log  version (2.3-5 Build 12350) Tue, 25 Aug 2020 16:11:02 +0100
256 >
257 > 1.  TIBStringField: when a string value is read from a dataset buffer, if the
258 >    number of UTF8 characters exceeds the string size then string is truncated
259 >    to the maximum string size. This is  usually a problem with fixed width columns
260 >    right padded with white space.
261 >
262 > 2.  SQLFiltered and SQLFilterParams added to TIBQuery, TIBTable and TIBDataset.
263 >    If SQLFiltered is set then when a dataset is opened, each line in the
264 >    SQLFilterParams property is assumed to be a SQL condition clause and
265 >    ANDed into the Where clause of the SQL Select statement provided as a
266 >    dataset property. Each such SQL condition thus acts as an additional filter
267 >    on the dataset.
268 >
269 > 3.  The Filtered property inherited from TDataset is no longer used for SQL (server
270 >    side filters).
271 >
272 > 4. IBLookupComboEditBox: Selection should no longer reset to start of text when
273 >   text matches complete entry.
274 >
275 > 5. TIBDataLink: Detail Dataset params not refreshed unless both master and detail
276 >   dataset are active (avoids risk of access violation if master is inactive)
277 >
278 > 6. TIBEvents: Registered property can now be set at design time even if database not open
279 >
280 > 7. TIBEvents: component now correctly re-initialised after call to UnregisterEvents.
281 >   This should prevent "spillover" of events between sessions.
282 >
283 > 8. TIBCustomDataset: GetNextRecord now called when reseting to first record of a unidirectional dataset.
284 >   This should ensure that the internal buffer is set up correctly and avoids
285 >   a duplicate initial row.
286 >
287 > 9. TIBStringField: DataSize now given as byte size of string less trailing any zero character.
288 >   That is, the DataSize should be the field size * character set width. The
289 >   value returned by DataSize is now the same as the Dataset buffer size reserved
290 >   for the field.
291 >
292 > 10. IBExtract: Tidyup of SQL generation. Avoid unnecessary double quotes.
293 >
294 > 11. TIBCustomDataset: Add checks on buffer sizes when copying data from row to field buffer
295 >    and vice-versa. This may result in an exception being raised (correctly) for
296 >    older programs when using dataset fields added to a form and the database has been
297 >    upgraded. For example, computed fields can change from 32-bit to 64-bit integers.
298 >    In such cases, the field needs to be deleted in the IDE fields editor and then
299 >    added back in.
300 >
301 > 12. IBCustomDataSet: CanInsert, CanEdit, CanDelete and CanRefresh updated to return
302 >    false if query contains only white space and not just empty.
303 >
304 > 12. IBCustomDataset: Blob data is now cleared when TDataSet.Cancel is called. This
305 >    should ensure that (e.g.) a TDBMemo is correctly refreshed after a dataset edit
306 >    is cancelled.
307 >
308 > 13. IBCustomDataset: SetArrayIntf should no longer cause an access violation if
309 >    called on a null field.
310 >
311 > 14. IBCustomDataSet: An access violation should no longer occur when calling CancelUpdates
312 >    results in an empty dataTC86                Client side Filtered Dataset    1       X
313 > set.
314 >
315 > 15. IBCustomDataSet: OnUpdateError should now be called in all circumstances when
316 >    a cached update is applied and an exception is raised.
317 >
318 > 16. IBCustomDataSet: Avoid access violation when SetBookmarkData called with nil pointer.
319 >
320 > 17. Console Mode Local Database support: backup/restore should now work correctly.
321 >
322 > 18. Local Database Support: if an upgrade fails, a downgrade is now performed if
323 >    possible and an exception raised.
324 >
325 > 19. MinimumVersionNo added to Local Database Support. Database will not open if
326 >    below this version no. and upgrade not possible.
327 >
328 > IBX Change Log  version (2.3-4 Build 12041) Fri, 17 Apr 2020 14:00:32 +0100
329 >
330 > 1.  TIBXDataSet and Generators: Generator Names that are not all upper case or
331 >    not SQL Identifiers are now supported.
332 >
333 > 2.  TIBXScript: Set Generator is no longer rejected as unrecognised SQL and is
334 >    passed to the Firebird engine for execution.
335 >
336 > 3.  TIBDataSet: Unidirectional datasets now give an error message if an attempt
337 >    is made to scroll back.
338 >
339 > 4.  New unit: IBMessages.pas. Contains only messages used by IBX and not FBIntf
340 >
341 > 5. TIBLookupComboEditBox: When generating auto-complete SQL, the ListField is now
342 >   only enclosed in double quotes in SQL dialect 3 and when it needs to be.
343 >
344 > 6. TIBLookupComboEditBox: when the list source opens, the ListField name is now
345 >   validated. If no match is found in the list of field names and the database has
346 >   been opened in SQL Dialect 3, then the ListField Name is converted to upper case
347 >   if it then matches a field name. Otherwise, a Listfield not valid exception occurs.
348 >
349 > 7. IBGeneratoreditor.pas: Add missing parenthesis around "IS" statement for compliance
350 >   with fpc 3.2.
351 >
352 > IBX Change Log  version (2.3-3 Build 11512) Fri, 28 Dec 2018 10:04:17 +0000
353 >
354 >
355 > 1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
356 >   and is used to override the default settings in the client side "firebird.conf" This
357 >   includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
358 >   Each line of the string list should be a setting in the same format as "firebird.conf".
359 >   For example "WireCompression = true" in order to request wire compression on the client side.
360 >
361 >   Note: explicit settings in the client side "firebird.conf" appear to take precedence
362 >   over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
363 >   also require a compatible setting in the server side "firebird.conf". For example
364 >   "WireCompression = true" must also be set in the server's "firebird.conf" for wire
365 >   compression to be used.
366 >
367 >   Whether or not WireCompression or WireCrypt are in use can be checked using the information
368 >   returned with the Client/Server protocol version. See ibx/examples/dbadmin and
369 >   ibx/examples/dbinfo for examples of how to display this information.
370 >
371 > 2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
372 >   is a "convenience" property. If set the "WireCompression=true" is added to the
373 >   ConfigOverrides. If unchecked then this setting is removed.
374 >
375 > 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
376 >   not "INT64".
377 >
378 > 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
379 >   These are:
380 >    property TimestampFormat: string;
381 >    property DateFormat: string;
382 >    property TimeFormat: string;
383 >
384 >   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
385 >   DATETIME and TIME. The format strings use the standard FPC date/time format
386 >   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
387 >
388 >   If any of the above properties are set to an empty string, then the locale default
389 >   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
390 >   locale default is extended by appending '.zzz' to include milliseconds.
391 >
392 >   TIBCSVDataOut by default sets these properties to the empty string, while the other
393 >   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
394 >
395 > 5. New published property for TIBCSVDataOut:
396 >     property QuoteStrings: boolean (default true)
397 >
398 >   If false then strings are unquoted, otherwise, the QuoteChar property value is
399 >   used to delimit each and every string in the output.
400 >
401 > 6. New published properties for TIBCSVDataOut:
402 >    property FieldSeparator: string;
403 >    property HeaderSeparator: string;
404 >
405 >   Respectively, these provide the separator character(s) used to separate fields
406 >   in data and header rows. Both default to ','.
407 >
408 > 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
409 >    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
410 >    property OnFormatTextString;
411 >
412 >   This event handler can be used to process text strings before they are included
413 >   in the output e.g. to replace unprintable characters with alternative strings.
414 >   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
415 >
416 > 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
417 >   Uses "FindParam" if in order to find out if a parameter with a given name exists
418 >   and without raising and exception if it does not.
419 >
420 > 9. TIBQuery now uses IBX SQL Parser instead of the TParams SQL parser in order to ensure
421 >   consistency with SQL queries.
422 >
423 > 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
424 >    When true, SQL statement parameter names are parsed case sensitive. Note for
425 >    TIBDataSet only applies to Select query.
426 >
427 > 11. IBEvents: removing a TIBEvent component from a form should no longer result in
428 >    an IDE exception.
429 >
430 > 12. LocalDBSupport: initial database creation should now work correctly
431 >    when the schema source is an sql file.
432 >
433 > 13. TIBCMLocalDBSupport: new event handler "property OnProgressEvent: TOnProgressEvent"
434 >    when defined, this handler will be called by the internal TIBXScript during
435 >    initial database creation when the schema source is an sql file and may be used
436 >    to provide a visual indication of progress in console mode.
437 >
438 > 14. TCustomIBLocalDBSupport: new public property "InOnCreateDB: boolean". This is set
439 >    to true while a new local database is being created and its schema populated.
440 >    Useful in (e.g.) TIBDatabase.OnAfterConnect handler to suppress actions
441 >    when the database is disconnected/connected during the create DB procedure.
442 >
443 > 15. TIBXScript: any User/password parameters found in a CREATE DATABASE statement
444 >    are now always ignored and replaced by the user name and password provided as
445 >    the login parameters for the TIBDatabase referenced from the TIBXScript. The
446 >    IgnoreCreateDatabase property still applies and the CREATE DATABASE statement is
447 >    completely ignored if this property is true.
448 >
449 > 16. Code tidyup in IBTreeView: Node properties initialisation moved from TIBTreeView.AddNodes
450 >    to TIBTreeView.Added. An OnAddition event handler is no longer needed to initialise
451 >    ImageIndex and SelectImageIndex values on AddNode.
452 >
453 > 17. TIBDatabase.Attachment and TIBXServicesConnection.ServicesIntf properties are now
454 >    read/write. This should enabled (e.g.) multiple instances of TIBDatabase to share
455 >    the same database connection.
456 >
457 > 18. TIBDataSet and TIBQuery now support the TDataSet "Filter" property.
458 >    if provided, this should be an conditional SQL expression suitable for
459 >    including in an SQL Select statement "where" clause. If non-empty and the
460 >    "Filtered" property is true then the SQL expression provided as the value of
461 >    the "Filter" property is "ANDed" with any existing condition statement
462 >    in the SQL statement's "Where" clause.
463 >
464 >    If the "Filter" property is set at run time, the "Filtered" property is true
465 >    and the dataset is already open, then the dataset is closed and re-opened automatically.
466 >
467 >    The "Filter" condition may include IBX style parameters. In which case, their
468 >    value must be set by the dataset's "OnBeforeOpen" event handler.
469 >
470 >    This is a public property for TIBDataSet and TIBQuery query and intended for
471 >    use at run time.
472 >
473 >    Note: The property is a published property of TIBTable. The TIBTable functionality
474 >    is unaffected by this change.
475 >
476 > IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
477 >
478 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
479 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
480 >   mode apps.
481 >
482 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
483 >   statement. This avoids problems if "Execute Block" is used as the Query.
484 >
485 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
486 >   internal SQL tokeniser routines.
487 >
488 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
489 >   as a select statement, with or without CTEs.
490 >
491 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
492 >
493 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
494 >   internal SQL tokeniser routines.
495 >
496 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
497 >    being raised for valid set statements processed by a data formatter.
498 >
499 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
500 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
501 >   the path of the Firebird Library used by the database/services connection.
502 >
503 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
504 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
505 >   services connection.
506 >
507 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
508 >   or param name is not a valid SQL identifier.
509 >
510 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
511 >    view of whether the text box should be editable when no DataSource is specified.
512 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
513 >    ReadOnly is false, the text box is editable when no DataSource is specified.
514 >
515 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
516 >    the FBLIB environment variable. If you do not want to permit this then you
517 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
518 >    this setting.
519 >
520 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
521 >
522 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
523 >   Utf8EscapeControlChars
524 >
525 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
526 >
527 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
528 > all previous copies of the IBX source code tree before installing this release.
529 >
530 > The IBX packages used by most users have not changed, with one exception. The
531 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
532 > to use the IBServices unit in your applications, please add the iblegacyServices
533 > to the list of dependencies. To do this, open the Project Inspector and select
534 > Add->New Requirement and select "ibLegacyServices" from the list of available
535 > packages.
536 >
537 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
538 >   the IBServices unit providing what is intended to be a clearer and easier to
539 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
540 >   more information and the guide to "Firebird Service Management Using IBX".
541 >   As indicated above, the legacy services components are still available and
542 >   provided in a separate package. There is no need to update working applications
543 >   using the older versions except for an additional package dependency.
544 >
545 > 2. The IBX packages and source code tree have been re-organised in an attempt to
546 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
547 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
548 >   new set of IBX packages.
549 >
550 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
551 >   updated to use the new Services API components.
552 >
553 > 4. The iblocal package has been updated to use the new Services API components.
554 >
555 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
556 >   TIBXSecurityService. It had been wrongly classified in the previous version
557 >   as a per database configuration item. It is global to a server and hence
558 >   correctly positioned as part of the Security Package. In the DBAdmin example,
559 >   the setting has moved to the mappings page.
560 >
561 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
562 >   are ignored.
563 >
564 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
565 >   closed before the database is dropped. Before and After Disconnect event handlers
566 >   are also fired.
567 >
568 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
569 >   is started and not just the first time.
570 >
571 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
572 >   depenendency with comp type.
573 >
574 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
575 >
576 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
577 >    then this is recognised and not ignored.
578 >
579 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
580 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
581 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
582 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
583 >
584 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
585 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
586 >    counters for the select query. Note: stats accumulate after each fetch from
587 >    the database. To get total query cost after open, call the "Last" method
588 >    and then GetPerfStatistics.
589 >
590 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
591 >
592 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
593 >    in parenthesises.
594 >
595 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
596 >    SQL identifiers are always delimited by double quotes. If false, then they are
597 >    only delimited if the identifier is a reserved word, contains lower case or special
598 >    characters. Set this property to true to retain previous behaviour.
599 >
600 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
601 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
602 >
603 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
604 >       property MasterDetailDelay: integer {defaults to zero}
605 >
606 >    When non-zero and the dataset is a detail table referencing a master table
607 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
608 >    then a synchronisation delay is added (in milliseconds) between the master
609 >    row changing and the detail dataset being re-opened. If the master dataset
610 >    is scrolled before the delay expires then the delay is reset. This can be used
611 >    to avoid performance overheads when scrolling through a large master dataset.
612 >
613 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
614 >    chreads unit must be included in your project. TTimer is not used in order
615 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
616 >
617 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
618 >    with Extract Option eoDatabase.
619 >
620 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
621 >    When a deLayoutChanged event is reported on the ListSource dataset, the
622 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
623 >    relationship with the control's datasource (master).
624 >
625 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
626 >
627 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
628 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
629 >
630 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
631 >    DDL (Firebird 3 and later only).
632 >
633 > 22. TIBLookupComboBox Autocomplete Fixes:
634 >    i. Only appended text is now selected after autocomplete.
635 >    ii. Uppercase keys no longer ignored for autocomplete.
636 >    iii. Retain Prefix case is now honoured correctly.
637 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
638 >        before autocomplete performed. i.e. behaviour now the same as when
639 >        no DataSource assigned.
640 >
641 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
642 >    between SQL statements.
643 >
644 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
645 >    ObjectNames are converted to upper case before matching against metadata object
646 >    names, unless the objectname is delimited by double quotes, in which case, the
647 >    double quotes are removed and the remaining string is used (unmodified) to match
648 >    against the metadata object name.
649 >
650 >    If true then the ObjectName is used as is without modification and matched
651 >    against the metadata object name. No attempt is made to remove double quotes.
652 >
653 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
654 >    with eoTrigger, these extract types can be used to select only Database Triggers,
655 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
656 >
657 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
658 >    statement separate character is now reset to the default (';').
659 >
660 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
661 >
662 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
663 >    a commit or reconnect statement and instead activated only when next SQL statement
664 >    is executed.
665 >
666 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
667 >
668 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
669 >    converting statement to upper case.
670 >
671 > 31. TIBExtract: metadata comments now supported. New published property
672 >    IncludeMetaDataComments (default true). If true then metadata comments included
673 >    in extracted DDL. New Extract Object member eoComments. This may be used with
674 >    ExtractObject method to list all metadata comments.
675 >
676 > 32. TIBExtract: ListObjectNames method added.
677 >
678 > 33. Updated Database component editor to support additional connection string
679 >    types.
680 >
681 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
682 >
683 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
684 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
685 > RELEASE.
686 >
687 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
688 >
689 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
690 >
691 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
692 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
693 >   information). However, this is also a very useful mechanism for returning updated computed by
694 >   column values. Values returned as a result of executing an Insert or Update statement
695 >   replace existing values in the current row for each corresponding column.
696 >
697 >   Previously, if a dataset's select query included read only (computed by) fields then
698 >   an automatic row refresh was performed after an insert or update query had been processed,
699 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
700 >   that an automatic refresh is no longer performed if an insert or update query contains
701 >   a returning clause that updates one or more fields on the current row. A full row
702 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
703 >   field values and the select query contains read only fields. Use of Insert/update
704 >   returning should be significantly more efficient than executing a refresh query.
705 >
706 >   This behaviour change is intended to be backwards compatible and there should be no need to change
707 >   existing programs, other than to improve performance by using the new capability.
708 >
709 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
710 >   they are called when the dataset row is being deleted, there is no value in
711 >   updating the current record from the query result. Instead, a new event handler
712 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
713 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
714 >   by the query. The event handler can then interrogate the query results and
715 >   perform whatever action is necessary. For example to confirm, to the user,
716 >   the deletion of a row with the returned values.
717 >
718 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
719 >   any Computed By or Identity Columns. The IBTables example has been updated to
720 >   illustrate the computation of the employee Full Name on update.
721 >
722 > 5. TIBTable: The GeneratorField property is now published.
723 >
724 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
725 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
726 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
727 >   each Identity column after the insert is executed.
728 >
729 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
730 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
731 >   Insert..Returning clause.
732 >
733 > 8. TIBGenerator: small performance improvement by not preparing query each time
734 >   a new value is generated.
735 >
736 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
737 >
738 > 10. Property editors will now sync table name to a System Table when "Include System
739 >    Tables" is selected and the query is for a System Table.
740 >
741 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
742 >    values are no longer converted to milliseconds from TDateTime and then back again
743 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
744 >
745 > 12. Property Editors handling of Stored Procedures.
746 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
747 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
748 >      query).
749 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
750 >
751 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
752 >    can be used to select a package. If non-empty, the stored procedure name is
753 >    expected to be a stored procedure defined in the specified package and the
754 >    generated SQL will be as required for a stored procedure located in a package.
755 >
756 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
757 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
758 >    which a stored procedure can be selected. With no package name selected, non-package
759 >    stored procedures are listed.
760 >
761 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
762 >    for password on reconnect.
763 >
764 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
765 >    and character set name.
766 >
767 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
768 >    DB info lookups"
769 >
770 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
771 >
772 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
773 >
774 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
775 >    parameters. This stops an exception being raised when the field cannot be
776 >    located in the record buffer.
777 >
778 > 21. Property Editors now automatically include System Tables when opened and when the query table
779 >    is a System Table.
780 >
781 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
782 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
783 >
784 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
785 >    add the SPB item isc_spb_expected_db. This names a database using
786 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
787 >    database. examples/services re-written to illustrate use of "expected_db".
788 >
789 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
790 >    This avoids truncated backups when the server returns a timeout (busy) response.
791 >
792 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
793 >
794 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
795 >    databasenames. These are respectively expanded to the local system's temp directory
796 >    (including trailing delimiter) or to a prescribed data directory (including
797 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
798 >    in the user's home directory. The hidden directory name is either the string returned
799 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
800 >    Under Windows, the directory is the same as the Data Directory as decribed
801 >    above but instead prefixed by the User's application data path. These may be
802 >    used to improve application portability for Personal Databases.
803 >
804 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
805 >    this has not worked for a long time and is not useful either. FieldDefs should be
806 >    managed using the Fields Editor as with any other dataset. To access the fields
807 >    editor for a TIBTable component, double click on the component. The fields editor
808 >    is then displayed.
809 >
810 > 28. TIBDatabaseInfo: new properties/function
811 >     * DateDBCreated (returns date/time database created)
812 >     * TransactionCount (returns no. of active transactions)
813 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
814 >     * PagesFree (Firebird 3 or later)
815 >     * PagesUsed (Firebird 3 or later)
816 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
817 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
818 >
819 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
820 >
821 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
822 >
823 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
824 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
825 >
826 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
827 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
828 >    firing during backup and restore.
829 >
830 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
831 >    for verbose output using the new property "StatisticsRequested".
832 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
833 >
834 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
835 >
836 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
837 >    palette. This uses the online validation feature added in Firebird 2.5. The
838 >    services's properties enable inclusion/exclusion of tables and indexes using
839 >    regular expressions. See.
840 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
841 >
842 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
843 >    option on a database.
844 >
845 > 37. TIBCustomService: Assign method implemented to allow copying of service login
846 >    context between service API components. "Detach" method now only detaches
847 >    service when last reference to the service interface detaches. Tidy up of
848 >    code for SetActive and Attach methods including password hiding.
849 >
850 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
851 >    and used to determine the auth method and protocol used for the connection.
852 >
853 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
854 >    a Create Database Statement generated by IBX.
855 >
856 > 40. All IBServices now have an additional published property "PortNo". This may
857 >    be set to a non-standard port number when necessary. If zero then the default
858 >    port number is used.
859 >
860 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
861 >    and not just the mouse.
862 >
863 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
864 >
865 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
866 >    image index and selected image index for each node to be set from a database field.
867 >
868 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
869 >    then database schema includes grants to all users. If not present then the
870 >    only user grants included are those to User PUBLIC.
871 >
872 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
873 >    and child nodes in dataset.
874 >
875 >
876 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
877 >
878 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
879 >   changes.
880 >
881 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
882 >   Bug could result in truncated multi-byte character set values.
883 >
884 > 3. Changes consequential on moving fbintf character set utility functions from
885 >   IFirebirdAPI to IAttachment.
886 >
887 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
888 >
889 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
890 >   results in autocomplete ignoring prefix text.
891 >
892 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
893 >   entering a new name into the text box.
894 >
895 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
896 >   Firebird rather than recomputing it.
897 >
898 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
899 >   screen centre. Previously some were "poDesigned" which may be inappropriate
900 >   for multi monitor desktops.
901 >
902 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
903 >
904 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
905 >    a transaction and always reset the object.
906 >
907 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
908 >
909 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
910 >
911 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
912 >    to a gbak format archive.
913 >
914 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
915 >
916 > 16. IBLocaldb: Drop database if error creating an empty database.
917 >
918 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
919 >    unless selected node not in current dataset.
920 >
921 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
922 >    to TIBCustomService, and IBlocalDB code tidy up.
923 >
924 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
925 >    behaviour due to uninitialised variable.
926 >
927 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
928 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
929 >
930 > 21. IBSQL: When Database changed ensure that all resources are freed.
931 >
932 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
933 >
934 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
935 >    * Line Wrap on SQL Token boundaries (on user command)
936 >    * auto-complete table names in drop down list of table names
937 >    * Double click on tablename or field name adds to SQL text
938 >
939 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
940 >
941 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
942 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
943 >    workaround for a problem in fpc 3.0.4 win64).
944 >
945 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
946 >
947 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
948 >
949 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
950 >
951 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
952 >   include remote system name.
953 >
954 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
955 >   tables when data included in output.
956 >
957 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
958 >   and timing information to be written to stdout. This may be used to locate
959 >   performance bottlenecks.
960 >
961 > 4. SQLParser: only call "OnChanging" event handler when value is different.
962 >
963 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
964 >
965 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
966 >   that BindFields is called when the query is next activated. Avoids FieldName
967 >   not found error.
968 >
969 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
970 >   purpose and allows the programmer to define any action they want for Update, Insert
971 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
972 >   filtering of updates, or use of statements such as Grant or Revoke instead of
973 >   normal DML. See User Manual for more information.
974 >
975 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
976 >
977 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
978 >
979 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
980 >
981 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
982 >   hexadecimal notation.
983 >
984 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
985 >   using a simple XML format.
986 >
987 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
988 >   grants to these objects.
989 >
990 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
991 >   dependency problems restoring complex databases.
992 >
993 > 7. TIBXScript: This component has been restructured to allow for the processing of
994 >   embedded XML in INSERT statements and to support interactive sources in addition
995 >   to non-interactive data sources such as files.
996 >
997 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
998 >
999 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
1000 >   SET SQL DIALECT
1001 >   SET TERM
1002 >   SET AUTODDL
1003 >   SET BAIL
1004 >   SET ECHO
1005 >   SET COUNT
1006 >   SET STATS
1007 >   SET NAMES <character set>
1008 >
1009 > 10. IBVersion unit added to hold current IBX Version Number information.
1010 >
1011 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
1012 >    and domain definitions.
1013 >
1014 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
1015 >    fully supported.
1016 >
1017 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
1018 >
1019 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
1020 >
1021 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
1022 >
1023 > See also doc/IBX4LazarusGuide.pdf for important information on
1024 > upgrading to IBX2.
1025 >
1026 > 1. Size property of TIBStringField is now the width in characters of the field
1027 >   and not the byte length. This applies only to multi-byte character sets such
1028 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
1029 >   code is not recognised as a bug and hence this change to align the behaviour.
1030 >   The TStringField change is expected in fpc 3.2.0.
1031 >
1032 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
1033 >   true (default) then Size property value saved in the lfm is ignored. Size is
1034 >   always set from the dynamic information read from the database. It is unclear
1035 >   why anyone would want to override this and set Size to false.
1036 >
1037 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
1038 >   block.
1039 >
1040 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
1041 >   exist when an attempt is made to connect to it (run time only) then an attempt
1042 >   is made to create the database.
1043 >
1044 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
1045 >   has been successfully created as a result of a call to CreateDatabase or when
1046 >   creating a database after it was found not to exist.
1047 >
1048 > 6.  DBControlGrid: a race condition could result in the wrong row image being
1049 >    written to the cache. This has been avoided by a trip round the message
1050 >    loop before rendering the row image.
1051 >
1052 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
1053 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
1054 >    known to risk corrupt rendering of row images when the control is first
1055 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
1056 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
1057 >
1058 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
1059 >    a TDateEdit control located on an editor panel.
1060 >
1061 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
1062 >
1063 > 10. DBControlGrid: Removed memory leak when updating rows.
1064 >
1065 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
1066 >
1067 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
1068 >
1069 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
1070 >   when target codepage is CP_NONE. This is a workaround for
1071 >   http://bugs.freepascal.org/view.php?id=30622.
1072 >
1073 > 2. DBLog option removed from TIBStatisticalService - not supported by server
1074 >   since Firebird 1.5.
1075 >
1076 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
1077 >   similar.
1078 >
1079 > 4. IBCodePage: updated mapping between codepages and character id.
1080 >
1081 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
1082 >   Firebird. Character sets with a char width of two are not UTF16.
1083 >
1084 > 6. Strings received from the database are now always transliterated into UTF8
1085 >   regardless of the database character set or connection character set. This
1086 >   is for compatibility with the LCL.
1087 >
1088 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
1089 >
1090 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
1091 >   read in an entire blob just to get the size of the blob. General performance
1092 >   improvement when opening datasets containing blobs.
1093 >
1094 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
1095 >
1096 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
1097 >   is now used.
1098 >
1099 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
1100 >   determined.
1101 >
1102 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
1103 >
1104 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
1105 >   lazarus 1.6.0
1106 >
1107 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
1108 >   compilation error.
1109 >
1110 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
1111 >
1112 > 1. No character set specified for connection: when a text blob is retrieved, the
1113 >  character set is determined by looking up the native character set using then
1114 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
1115 >  set as the connection.
1116 >
1117 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
1118 >   for Login Dialog returing a change to the database path.
1119 >
1120 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
1121 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
1122 >   entered value to be saved on a project specific basis (design time only).
1123 >
1124 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
1125 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
1126 >   Otherwise, it sets the column text to the selected ListField Value.
1127 >
1128 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
1129 >   column width.
1130 >
1131 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
1132 >   and a case insensitive search is requested.
1133 >
1134 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
1135 >   or column ListSource.
1136 >
1137 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
1138 >   unprepare) when closing and the text has not changed.
1139 >
1140 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
1141 >   Less likely to cause a cursor re-use error on Windows.
1142 >
1143 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
1144 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
1145 >
1146 > 11. TIBTreeView: Guard against nil destination on record changed
1147 >
1148 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
1149 >    string type with the code page set to reflect the returned field encoding after
1150 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
1151 >    earlier versions.
1152 >
1153 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
1154 >    will now result in transliteration to the code page specified for the Firebird driver
1155 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
1156 >
1157 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
1158 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
1159 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
1160 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
1161 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
1162 >    the GETACP is used to determine the Windows code page.
1163 >
1164 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
1165 >    name used as the lc_ctype when the database was opened. Only valid while the
1166 >    Database is connected.
1167 >
1168 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
1169 >    id that corresponds to the DefaultCharSetName.
1170 >
1171 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
1172 >
1173 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
1174 >   path is given and database attach fails due to access permission issues on the
1175 >   temp directory or security database, then the attach is retried with "localhost:"
1176 >   prefixing the databasename. This should avoid problems when the database has to
1177 >   be accessed by a local (e.g. classic) server and libfbembed is used.
1178 >
1179 > 2. Windows: revised search order for Firebird DLL:
1180 >     i.   The Firebird Embedded Server in the application Directory.
1181 >     ii.  If the FIREBIRD environment variable is set then the directory this
1182 >          points to is searched for the FB Client DLL and then then underlying
1183 >          "bin" directory.
1184 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
1185 >          is used to locate the Firebird installation directory and the underlying
1186 >          "bin" directory is searched for the FB Client DLL.
1187 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
1188 >          are searched for the FB Client DLL.
1189 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
1190 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
1191 >
1192 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
1193 >   See doc/readme.scriptengine and example applications.
1194 >
1195 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
1196 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
1197 >   See dpc/readme.localdatabase and example applications.
1198 >
1199 > 5. IBDynamicGrid: Reordering on column header click should now also work for
1200 >   dynamic columns.
1201 >
1202 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
1203 >   between incrementing/decrementing the lock count and signalling the event.
1204 >
1205 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
1206 >
1207 > 1.3.2 was never formally released and only made available as beta copies.
1208 >
1209 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
1210 >
1211 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
1212 >
1213 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
1214 >
1215 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
1216 >   i.e. when it is a calculated field
1217 >
1218 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
1219 >   This problem was due to a race condition between recalculating row heights and
1220 >   determining which row was selected by the mouse click. The row height calculation
1221 >   is now deferred by an extra trip round the message loop allowing the row to
1222 >   be always calculated on the current grid layout rather than risking it being
1223 >   calculated on the grid layout after the expanded row has been shrunk.
1224 >
1225 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
1226 >   Windows.
1227 >
1228 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
1229 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
1230 >   to be determined at runtime. See doc/readme.charactersets.html.
1231 >
1232 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
1233 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
1234 >
1235 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
1236 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
1237 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
1238 >
1239 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
1240 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
1241 >   implies no truncation.
1242 >
1243 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
1244 >
1245 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
1246 >   (avoids "Not in Edit Mode" error).
1247 >
1248 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
1249 >
1250 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
1251 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
1252 >
1253 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
1254 >
1255 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
1256 >
1257 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
1258 >
1259 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
1260 >
1261 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
1262 >
1263 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
1264 >
1265 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
1266 >     problem with row size when exception is called.
1267 >
1268 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
1269 >
1270 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
1271 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
1272 >
1273 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
1274 >     keyed in i.e. when autocomplete not performed
1275 >
1276 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
1277 >     console mode applications with all LCL required functions (builtin dialogs and
1278 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
1279 >     not included in your project, IBX should compile and link with a console mode program.
1280 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
1281 >     console mode application or the IDE will automatically assume that your
1282 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
1283 >
1284 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
1285 >     to use the built in dialogs and cursor management. IBDialogs is
1286 >     included by default if "ibexpress" is in your project source's "uses" clause.
1287 >     This should be the case for all projects created through the IDE. This is why
1288 >     you do not want to add the ibexpress package to console mode applications. The
1289 >     ibexpressconsolemode package has been created to allow console mode programs
1290 >     to avoid adding LCL dependencies when using IBX, while still having the
1291 >     unit search paths set up correctly.
1292 >
1293 >     Existing users should check to ensure that the "ibexpress" unit is included in
1294 >     each project's source file (*.lpr).
1295 >
1296 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
1297 >     exists, you have to first open the package in the IDE and then close it. This
1298 >     adds it to the most recently accessed packages list. To make it permanently
1299 >     available, add the package name to lazarus' staticpackages.inc file.
1300 >
1301 >         Thanks to Julio Jiménez for suggesting support of console mode.
1302 >
1303 > 7.   SQL Parser can now accept quoted strings that include new lines
1304 >
1305 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
1306 >     of text on start of edit. This is particularly useful when tabbing to a
1307 >     column and then inserting text.
1308 >
1309 > 9.   New Examples provided for IB Services and ISQLMonitor.
1310 >
1311 > 10. Fix error when writing to blob streams that recorded only the last buffer
1312 >    write in the blob stream. In most cases, this did not cause a problem as the
1313 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
1314 >    of a graphic type prefix was lost which caused a problem when the image could
1315 >        not be automatically recognised.
1316 >
1317 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
1318 >    already open" errors due to random numbers used for the cursor name being identical.
1319 >
1320 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
1321 >    when opening the table and the Primary Key is the last or only column in the
1322 >    table. Thanks to Rick Hoover for the fix.
1323 >
1324 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
1325 >    of "UTF-8", and update list of available database character sets. Existing
1326 >    users should check the current lc_ctype setting in their applications.
1327 >
1328 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
1329 >
1330 > 1.  Firebird Services: avoid List Index error when opening a service with an
1331 >    empty Params property.
1332 >
1333 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
1334 >    Link now set up in Loaded method - avoids occasional failure to apply
1335 >    SQL markup on initial open.
1336 >
1337 > 3.  "Employees" example performance improvements when scrolling.
1338 >
1339 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
1340 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
1341 >    random image cached).
1342 >
1343 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
1344 >
1345 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
1346 >    even when further rows exist.
1347 >
1348 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
1349 >    always be derived from panel height and setting this property can cause confusion.
1350 >    Note for existing projects: to avoid a missing property error at run time,
1351 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
1352 >    in order to remove the property value from the lfm.
1353 >
1354 >
1355 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
1356 >
1357 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
1358 >    call Prepare before setting parameter values.
1359 >
1360 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
1361 >
1362 > 3.  Code tidyup and more robust handling of dsql information result vector.
1363 >
1364 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
1365 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
1366 >    and "AfterExecQuery". The first three are called after the same event is called
1367 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
1368 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
1369 >    enable monitoring of transaction status changes for a given transaction to be
1370 >    handled in a single place. For example, when a change to the dataset occurs
1371 >    an indicator can be set that shows the user that in order to save changes,
1372 >    the transaction should be committed.  Rather than doing this per dataset, this
1373 >    can now be done per transaction.
1374 >
1375 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
1376 >    the dataset is scrolled. However, any changes to the current row are, by default,
1377 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
1378 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
1379 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
1380 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
1381 >    then IBX will attempt to post any unsaved changes before the dataset is closed
1382 >    (and after the BeforeClose event handler is called). The exception is when the
1383 >    dataset is being closed as a result of a transaction rollback. In this case,
1384 >    no action is taken and any unsaved  changes are discarded. This avoids both
1385 >    unnecessary overhead and the risk that a validation error may occur in the Post
1386 >    raising an exception and thereby preventing a rollback.
1387 >
1388 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
1389 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
1390 >    width. Display Widths are now corrected by dividing by the max byte width per character.
1391 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
1392 >    the byte width divided by 4. The byte width of each character set is determined
1393 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
1394 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
1395 >
1396 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
1397 >
1398 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
1399 >    control loses focus. Default Key press default interval reduced to 200ms.
1400 >
1401 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
1402 >    when dataset rows are less than visible rows.
1403 >
1404 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
1405 >    does not exist or DataSet is empty. More responsive on dataset open. New event
1406 >    OnRestorePosition. Column sort disabled if no header row.
1407 >
1408 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
1409 >    while dataset state is dsInsert. Avoids posting errors.
1410 >
1411 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
1412 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
1413 >
1414 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
1415 >
1416 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
1417 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
1418 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
1419 >    always "posts" the current record regardless or whether or not it may be more appropriate
1420 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
1421 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
1422 >    as the first action of the "Post" method and allows the handler to convert the Post
1423 >    into a Cancel if that is the appropriate action on moving to a different row. This is
1424 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
1425 >    raised here, but it may still be more appropriate to validate a post and signal
1426 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
1427 >
1428 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
1429 >    separated list. Each library name on the list is tried in turn, in left to right
1430 >    order with the first found being used as the firebird library. By default, on Linux,
1431 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
1432 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
1433 >
1434 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
1435 >    then it will still attempt to access the database via the Firebird Server and will
1436 >    require a username and password. If only the pathname is given, then the username
1437 >    and password should be omitted and the unix file permissions are used to grant
1438 >    access.
1439 >
1440 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
1441 >
1442 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
1443 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
1444 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
1445 >    corresponds to a row of the linked DataSource. Any data aware control on the
1446 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
1447 >
1448 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
1449 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
1450 >   takes place during database access. This may be useful when there are performance issues with
1451 >   the change of cursor. Setting the property to false suppresses the change of cursor.
1452 >
1453 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1454 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1455 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1456 >   making all changes permanent immediately rather than when the transaction is explicitly
1457 >   committed.
1458 >
1459 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1460 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1461 >
1462 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1463 >
1464 > Development version only.
1465 >
1466 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1467 >
1468 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1469 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1470 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
1471 >   complexity.
1472 >
1473 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1474 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1475 >   These are:
1476 >
1477 >   - TIBLookupComboEditBox
1478 >   - TIBDynamicGrid
1479 >   - TIBTreeview
1480 >
1481 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1482 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1483 >   to revise the available list and restrict it to items that are prefixed by the
1484 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
1485 >   newly typed entry to be added to the list dataset and included in the available
1486 >   list items.
1487 >
1488 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
1489 >   - automatic resizing of selected columns to fill the available row length
1490 >   - automatic positioning and sizing of a "totals" control, typically at the
1491 >     column footer, on a per column basis.
1492 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
1493 >     A second click on the same header cell reversed the sort order.
1494 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1495 >     is automatically expanded and a panel superimposed on it. The panel can have any
1496 >     number of child controls, typically data aware controls with the same datasource
1497 >     as the grid allowing for editing of additional fields and more complex editors.
1498 >   - Reselection of the same row following resorting.
1499 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1500 >     Its properties are specified on a per column basis and allows for one or more
1501 >     columns to have their values selected from a list provided by a dataset.
1502 >     Autocomplete and autoinsert are also available. The existing picklist editor
1503 >     is unaffected by the extension.
1504 >
1505 >   TIBTreeView is a data aware TCustomTreeView.
1506 >
1507 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1508 >   zero scale will no longer return an error. An Int64 will be returned instead.
1509 >
1510 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
1511 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1512 >
1513 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1514 >   repeated multiple times.
1515 >
1516 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1517 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
1518 >   statements.
1519 >
1520 > 7. Insert, Modify and Delete property Editors now support Query Generation from
1521 >   Stored Procedures.
1522 >
1523 > 8. Three new examples illustrate the use of the new IB Controls
1524 >
1525 >
1526 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1527  
1528   1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1529     setting performance. See "readme.field+param.names in the doc folder.(Thanks to

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