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Revision 17 by tony, Sat Dec 28 19:22:24 2013 UTC vs.
Revision 412 by tony, Mon Jul 17 14:08:12 2023 UTC

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1 + IBX Change Log  version (2.6-1 Build 13985) Mon, 17 Jul 2023 14:16:41 +0100
2 +
3 + 1. Maintenance update of 2.6.0. This version is still at beta.
4 +
5 + 2. Reverse out changes to DrawCellText signature in IBArrayGrid and IBDynamic Grid.
6 +   See https://gitlab.com/freepascal.org/lazarus/lazarus/-/commit/53aaae9c5e2a5edac5b1d2f70739a8ef7b0a9623
7 +
8 + 3. ibxscript: When parsing a store procedure or function with a variable name
9 +   enclosed in doublequotes, the double quotes are no longer removed.
10 +
11 + IBX Change Log  version (2.6-0 Build 13976) Thu, 22 Jun 2023 13:49:22 +0100
12 +
13 + NOTE: THIS VERSION RE-WRITES THE INTERNAL BUFFER MANAGER AND SHOULD BE CONSIDERED
14 +      AS BETA SOFTWARE. EVEN THOUGH IT HAS PASSED ALL REGRESSION TESTS, IT CANNOT
15 +      BE ASSUMED TO BE PRODUCTION READY UNTIL WIDER USE. PLEASE REPORT ANY
16 +      ISSUES TO support@mwasoftware.co.uk
17 +
18 + 1. Complete rewrite of internal buffer management in order to improve performance
19 +   and maintainability. Highlights:
20 +
21 +   * Extending the size of the buffer pool no longer has to copy the entire record
22 +     cache. Instead, a new extent is simply added to the buffer pool.
23 +   * A memory to memory copy of each display buffer now is avoided when scolling the
24 +     dataset.
25 +   * A separate set of buffers is now used for calculated fields. This avoids
26 +     having to keep copies of calculated field values in the buffer cache.
27 +   * Compact bitmaps are used to record null status and need to refresh in each
28 +     buffer.
29 +   * Display buffer type changed from PChar to TRecordBuffer in line with change of
30 +     buffer type in FCL-DB.
31 +
32 + 2. TIBUpdateSQL: changes to SQL text will close linked dataset if open. This is
33 +   to ensure same behaviour as TIBDataset, TIBTable and TIBStoredProcedure.
34 +
35 + 3. TField Provider Flags: pfRefreshOnInsert and pfRefreshOnUpdate are now supported.
36 +   If either or both of these flags are set at design time (using the fields editor)
37 +   then this forces a row refresh on respectively insert or update, or both, when the
38 +   corresponding field is not present in an SQL RETURNING clause.
39 +
40 + 4. TIBCustomDataset.FieldDefsFromQuery moved to a helper class (TFieldDefsMaker) in order to improve
41 +   maintainability and readability and to add identification of primary key fields.
42 +
43 + 5. TIBQuery, TIBDataset and TIBTable. Traditionally, IBX has implemented the Refresh method
44 +   as a refresh of the current row. However, this is different behaviour to that described
45 +   in the FPC documentation for TDataset.Refresh which is described as "refetches the data in
46 +   the dataset from the underlying database, and attempts to reposition the cursor on
47 +   the same record as it was". IBX now complies with the FPC definition of Refresh.
48 +
49 + 6. A progammatic Row Refresh should no longer be required.
50 +   Use Insert/Update... returning to refresh any fields that may change following an
51 +   insert or update i.e. Identify fields on Insert only, Computed By, Blob and array fields
52 +   on both. If there are any other fields (e.g. updated by triggers) set the appropriate ProviderFlag
53 +   for the field at Design Time to force a row refresh if not in the returning clause.
54 +
55 + 7. It should now be possible to insert a row into an empty unidirectional dataset.
56 +
57 + 8. New TIBQuery, TIBDataSet and TIBTable property: BufferChunksInFirstBlock (default 50).
58 +   This gives the number of buffers in the initial block for the buffer pool in
59 +   bi-directional datasets. BufferChunks (default 1000) gives the number of buffers
60 +   in subsequent buffer pool blocks. This avoids large and mostly unused memory allocations
61 +   for small datasets.
62 +
63 + IBX Change Log  version (2.5-1 Build 13927) Tue, 6 Dec 2022 23:13:00 +0000
64 +
65 + 1. IBCustomDataset: avoid problem with additions to TFieldType by using a subset instead.
66 +
67 + 2. TIBDynamicGrid: change DrawCellText declaration to comply with laz 2.3.0
68 +
69 + 3. TIBArrayGrid: change DrawCellText declaration to comply with laz 2.3.0
70 +
71 + IBX Change Log  version (2.5-0 Build 13868) Fri, 29 Jul 2022 09:52:01 +0100
72 +
73 + 1. TIBTransaction: new properties
74 +    property TransactionID: integer read GetTransactionID;
75 +    property IsReadOnly: boolean read GetIsReadOnly;
76 +    {published}
77 +    property TransactionName: string read FTransactionName write SetTransactionName;
78 +
79 + 2. IBCustomDataset: per row blob and array buffer cached clear before processing
80 +   Insert or Update...Returning. This allows blobs and arrays to be returned
81 +   by the statement.
82 +
83 + 3. TSQLXMLReader moved from IBXScript to package fbintf unit IBUtils.
84 +
85 + 4. TransactionName initialised to a newly generated GUID if empty.
86 +
87 + 5. New unit: IBJournal. This provides the TIBJournal component which is a wrapper
88 +   for the fbintf package's journaling capability. TIBJournal is used to set the
89 +   file path and filename for the journal file and to Enabled (start journaling) and
90 +   disable (stop journaling). See fbintf/doc/README.ClientSideJournaling.pdf for
91 +   more information, and comments in IBJournal.pas.
92 +
93 + 6. TIBDatabase.InternalTransaction is now a read only transaction.
94 +
95 + 7. Bug fix: blob id no longer set to null on update when blob has not been
96 +   retrieved.
97 +
98 + 8. Row auto refreshed on update/insert if blob or array field updated and field
99 +   not in a returning clause.
100 +
101 + 9. ColumnCount moved from record buffer header to a single per dataset count. Reduces
102 +   buffer overhead and avoids problem when refresh query has a different column
103 +   count to select query i.e. incorrectly changing number of columns.
104 +
105 + 10. IBExtract: support added for UDR Functions, Procedure and Trigger declarations.
106 +
107 + 11. TIBDatabaseInfo. New property FirebirdVersion. This returns the current Firebird version
108 +    string. Note that the Version property returns an InterBase compatible version string.
109 +
110 + 12. IBExtract: ensure sql identifiers returned as a LIST are always quoted.
111 +
112 + IBX Change Log  version (2.5-0 Build 12933) Mon, 29 Nov 2021 14:59:54 +0000
113 +
114 + 1. IBCustomDataset: Modify TISQL component now defaults to GoToFirstRecordOnExecute := true.
115 +   This is for compatibility with Firebird 5 where Update...Returning can return
116 +   a cursor.
117 +
118 + IBX Change Log  version (2.4-3 Build 12886) Sat, 23 Oct 2021 14:58:30 +0100
119 +
120 + 1. Add try-..except check when initially loading library in IDE. This should
121 + ensure that IDE continues to load even when a failure occurs in IBX load
122 + library.
123 +
124 + 2. IBXScript: now recognises a CASE...END block within a stored procedure and
125 +   hence will correctly detect end of the outer containing block when the block
126 +   contains a SELECT ... CASE ... END construct.
127 +
128 + 3. IBExtract: some further tidying up to remove extraneous white space.
129 +
130 + 4. IBCustomDataSet: DefaultFieldClasses array declaration updated to avoid compile time
131 +   errors when extra elements are added to DB.TFieldType.
132 +
133 + 5. IBUpdate: updated to reflect changes to ISQLParam.
134 +
135 + 6. IBXScript: now correctly parses a DECLARE statement which includes a quoted string.
136 +
137 + 7. IBExtract: for ODS >=13, increment generator value by one for ALTER SEQUENCE statement.
138 +
139 + 8. IBSQL: Support for scrollable cursors added (note: local databases only)
140 +
141 + IBX Change Log  version (2.4-2 Build 12773) Mon, 23 Aug 2021 11:59:42 +0100
142 +
143 + 1. TIBDatabaseInfo: review and tidy-up of property types. Most widen to int64 with the
144 +   exception of those defined to be one byte wide e.g. DBImplementationNo.
145 +
146 + 2. TIBSQL: Batch Update/Insert support added.
147 +
148 + 3. TIBStoredProc: when generating the SQL, the value of the StoredProcName property
149 +   is no longer automatically converted to upper case when it is syntactically a
150 +   SQL Identifier. This is to support the use of stored procedures defined e.g.
151 +   as CREATE PROCEDURE "iCASE".
152 +
153 +   There could be a backwards compatibility issue when the StoredProcName was entered
154 +   manually at design time. That is not selected from the drop down list. If the
155 +   StoredProcName is entered in mixed case and the procedure was declared e.g. as
156 +   CREATE PROCEDURE iCASE, then the SQL generation will be incorrect. You should
157 +   ensure that the value of the StoredProcName is all upper case, unless it was
158 +   declared under dialect 3 and explicitly as mixed case (i.e. delimited by double
159 +   quotes).
160 +
161 +   Note that when a stored procedure name was declared delimited in double quotes,
162 +   as in the first example above, the value of the StoredProcName property must not
163 +   include the delimiters (double quotes).
164 +
165 + 4. IBXUpgradeConfFile: an exception is now raised if a patch file specified in
166 +   upgrade.conf was not found. This replaces silently ignoring the problem.
167 +
168 + 5. TIBLocalDBSupport: new property "SectionHeaderTemplate". This defaults to
169 +   'Version.%.3d' and is used to generate the section header names (for a given
170 +   version no.) in the upgrade.conf file.
171 +
172 + IBX Change Log  version (2.4-1 Build 12550) Wed, 23 Jun 2021 13:59:14 +0100
173 +
174 + 1. -c command line option added to fbsql example program. Used to set connection
175 +   character set.
176 +
177 + IBX Change Log  version (2.4-0 Build 12543) Mon, 22 Feb 2021 11:00:08 +0000
178 +
179 + 1. Firebird 4 support added.
180 +
181 + 2. New FB4 data types TIME WITH TIME ZONE, TIMESTAMP WITH TIME ZONE, DECFLOAT and
182 +   extended precision NUMERIC fields are supported.
183 +
184 + 3. TFmtBCDField is used to support access to DECFLOAT and extended precision NUMERIC fields.
185 +
186 + 4. TIBDateTimeField and TIBTimeField are introduced in support of TIMESTAMP WITH TIME ZONE
187 +   and TIME WITH TIME ZONE fields. These inherit from TDateTimeField.
188 +
189 + 5. IBExtract now supports FB4 enhancements:
190 +   - new data types as above
191 +   - Identity column extensions
192 +   - Default user role
193 +   - SQL Security clause for Database, Tables, Procedures, Functions and Triggers
194 +   - Internal Functions
195 +
196 + 6. IBExtract: new event: OnExtractLines.
197 +
198 + 7. IBExtract: revert create trigger to legacy syntax see Firebird CORE-6243, CORE-5545 and DOC-145
199 +
200 + 8. IBXServices: Server version no. parsing now allows any letter before major version number
201 +   and is no longer restricted to 'V' e.g. "LI-T4.0.0.1436 Firebird 4.0 Beta 1"
202 +
203 + 9. TIBDataSet and TIBQuery: new property TZTextOption. Used to determine the default
204 +   format for rendering a time zone.
205 +
206 + 10. TIBDataSet and TIBQuery: new property DefaultTZDate. Used to provide the default date
207 +     to convert TIME WITH TIME ZONE data type values to and from GMT.
208 +
209 + 11. Unit name IBTypes changed to IBInternals. Internal interfaces TIBGUIInterface and TIBTimerInf renamed to
210 +    IIBGUIInterface and IIBTimerInf respectively.
211 +
212 + 12. Constants: DPBPrefix and TPBPrefix moved to IB unit. DPBConstantNames and TPBConstantNames
213 +    now accessible as properties of TIBDatabase and TIBTransaction respectively.
214 +
215 + 13. String Fields: when a fixed character with (CHAR) field is returned, it is now
216 +    truncated to its fixed character width rather than being right padded with
217 +    white space to the maximum data size.
218 +
219 + 14. TIBTable.Empty table. In additional to deleting all records in the underlying
220 +    table, the internal buffers are now also flushed ensuring that the TIBTable is
221 +    also empty.
222 +
223 + 15. TBatchSQLStatementReader: Line buffer is now cleared on call to reset.
224 +
225 + 16. TIBXControlService descendents: DatabaseName may now be set using a database
226 +    connect string. The database name is extracted from the connect string.
227 +
228 + 17. DBControlGrid: Minor bug fixes. avoid AV on form closure, avoid black panel
229 +
230 + 18. TIBExtract: Data type of COMPUTED By columns is no longer included in SQL.
231 +
232 + 19. Local database on Linux and with legacy API and FB 2.5 embedded server: fixed problem with password
233 +    not being present as required.
234 +
235 + 20. IBTreeView split into DBTreeView and IBTreeView. This former is an IBX indepedent
236 +    version that can be customised to work with other database drivers.
237 +
238 + 21. ISQLMonitor: use platform specific LineEnding to delimit messages. Avoids
239 +    unnecessary CR at end of line on Unix platforms.
240 +
241 + 22. ISQLMonitor: Unix: Default semaphore timeout increased from 1 second to 10
242 +    seconds in order to reduce risk of message loss.
243 +
244 + 23. ISQLMonitor: read and write count statistics now available via:
245 +      property TIBSQLMonitor.ReadCount;
246 +      IIBSQLMonitorHook.GetWriteCount: integer;
247 +
248 + 24. ISQLMonitor tidy up and unit split. IPC functions moved to new unit IBIPC.
249 +
250 + IBX Change Log  version (2.3-5 Build 12350) Tue, 25 Aug 2020 16:11:02 +0100
251 +
252 + 1.  TIBStringField: when a string value is read from a dataset buffer, if the
253 +    number of UTF8 characters exceeds the string size then string is truncated
254 +    to the maximum string size. This is  usually a problem with fixed width columns
255 +    right padded with white space.
256 +
257 + 2.  SQLFiltered and SQLFilterParams added to TIBQuery, TIBTable and TIBDataset.
258 +    If SQLFiltered is set then when a dataset is opened, each line in the
259 +    SQLFilterParams property is assumed to be a SQL condition clause and
260 +    ANDed into the Where clause of the SQL Select statement provided as a
261 +    dataset property. Each such SQL condition thus acts as an additional filter
262 +    on the dataset.
263 +
264 + 3.  The Filtered property inherited from TDataset is no longer used for SQL (server
265 +    side filters).
266 +
267 + 4. IBLookupComboEditBox: Selection should no longer reset to start of text when
268 +   text matches complete entry.
269 +
270 + 5. TIBDataLink: Detail Dataset params not refreshed unless both master and detail
271 +   dataset are active (avoids risk of access violation if master is inactive)
272 +
273 + 6. TIBEvents: Registered property can now be set at design time even if database not open
274 +
275 + 7. TIBEvents: component now correctly re-initialised after call to UnregisterEvents.
276 +   This should prevent "spillover" of events between sessions.
277 +
278 + 8. TIBCustomDataset: GetNextRecord now called when reseting to first record of a unidirectional dataset.
279 +   This should ensure that the internal buffer is set up correctly and avoids
280 +   a duplicate initial row.
281 +
282 + 9. TIBStringField: DataSize now given as byte size of string less trailing any zero character.
283 +   That is, the DataSize should be the field size * character set width. The
284 +   value returned by DataSize is now the same as the Dataset buffer size reserved
285 +   for the field.
286 +
287 + 10. IBExtract: Tidyup of SQL generation. Avoid unnecessary double quotes.
288 +
289 + 11. TIBCustomDataset: Add checks on buffer sizes when copying data from row to field buffer
290 +    and vice-versa. This may result in an exception being raised (correctly) for
291 +    older programs when using dataset fields added to a form and the database has been
292 +    upgraded. For example, computed fields can change from 32-bit to 64-bit integers.
293 +    In such cases, the field needs to be deleted in the IDE fields editor and then
294 +    added back in.
295 +
296 + 12. IBCustomDataSet: CanInsert, CanEdit, CanDelete and CanRefresh updated to return
297 +    false if query contains only white space and not just empty.
298 +
299 + 12. IBCustomDataset: Blob data is now cleared when TDataSet.Cancel is called. This
300 +    should ensure that (e.g.) a TDBMemo is correctly refreshed after a dataset edit
301 +    is cancelled.
302 +
303 + 13. IBCustomDataset: SetArrayIntf should no longer cause an access violation if
304 +    called on a null field.
305 +
306 + 14. IBCustomDataSet: An access violation should no longer occur when calling CancelUpdates
307 +    results in an empty dataTC86                Client side Filtered Dataset    1       X
308 + set.
309 +
310 + 15. IBCustomDataSet: OnUpdateError should now be called in all circumstances when
311 +    a cached update is applied and an exception is raised.
312 +
313 + 16. IBCustomDataSet: Avoid access violation when SetBookmarkData called with nil pointer.
314 +
315 + 17. Console Mode Local Database support: backup/restore should now work correctly.
316 +
317 + 18. Local Database Support: if an upgrade fails, a downgrade is now performed if
318 +    possible and an exception raised.
319 +
320 + 19. MinimumVersionNo added to Local Database Support. Database will not open if
321 +    below this version no. and upgrade not possible.
322 +
323 + IBX Change Log  version (2.3-4 Build 12041) Fri, 17 Apr 2020 14:00:32 +0100
324 +
325 + 1.  TIBXDataSet and Generators: Generator Names that are not all upper case or
326 +    not SQL Identifiers are now supported.
327 +
328 + 2.  TIBXScript: Set Generator is no longer rejected as unrecognised SQL and is
329 +    passed to the Firebird engine for execution.
330 +
331 + 3.  TIBDataSet: Unidirectional datasets now give an error message if an attempt
332 +    is made to scroll back.
333 +
334 + 4.  New unit: IBMessages.pas. Contains only messages used by IBX and not FBIntf
335 +
336 + 5. TIBLookupComboEditBox: When generating auto-complete SQL, the ListField is now
337 +   only enclosed in double quotes in SQL dialect 3 and when it needs to be.
338 +
339 + 6. TIBLookupComboEditBox: when the list source opens, the ListField name is now
340 +   validated. If no match is found in the list of field names and the database has
341 +   been opened in SQL Dialect 3, then the ListField Name is converted to upper case
342 +   if it then matches a field name. Otherwise, a Listfield not valid exception occurs.
343 +
344 + 7. IBGeneratoreditor.pas: Add missing parenthesis around "IS" statement for compliance
345 +   with fpc 3.2.
346 +
347 + IBX Change Log  version (2.3-3 Build 11512) Fri, 28 Dec 2018 10:04:17 +0000
348 +
349 +
350 + 1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
351 +   and is used to override the default settings in the client side "firebird.conf" This
352 +   includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
353 +   Each line of the string list should be a setting in the same format as "firebird.conf".
354 +   For example "WireCompression = true" in order to request wire compression on the client side.
355 +
356 +   Note: explicit settings in the client side "firebird.conf" appear to take precedence
357 +   over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
358 +   also require a compatible setting in the server side "firebird.conf". For example
359 +   "WireCompression = true" must also be set in the server's "firebird.conf" for wire
360 +   compression to be used.
361 +
362 +   Whether or not WireCompression or WireCrypt are in use can be checked using the information
363 +   returned with the Client/Server protocol version. See ibx/examples/dbadmin and
364 +   ibx/examples/dbinfo for examples of how to display this information.
365 +
366 + 2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
367 +   is a "convenience" property. If set the "WireCompression=true" is added to the
368 +   ConfigOverrides. If unchecked then this setting is removed.
369 +
370 + 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
371 +   not "INT64".
372 +
373 + 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
374 +   These are:
375 +    property TimestampFormat: string;
376 +    property DateFormat: string;
377 +    property TimeFormat: string;
378 +
379 +   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
380 +   DATETIME and TIME. The format strings use the standard FPC date/time format
381 +   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
382 +
383 +   If any of the above properties are set to an empty string, then the locale default
384 +   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
385 +   locale default is extended by appending '.zzz' to include milliseconds.
386 +
387 +   TIBCSVDataOut by default sets these properties to the empty string, while the other
388 +   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
389 +
390 + 5. New published property for TIBCSVDataOut:
391 +     property QuoteStrings: boolean (default true)
392 +
393 +   If false then strings are unquoted, otherwise, the QuoteChar property value is
394 +   used to delimit each and every string in the output.
395 +
396 + 6. New published properties for TIBCSVDataOut:
397 +    property FieldSeparator: string;
398 +    property HeaderSeparator: string;
399 +
400 +   Respectively, these provide the separator character(s) used to separate fields
401 +   in data and header rows. Both default to ','.
402 +
403 + 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
404 +    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
405 +    property OnFormatTextString;
406 +
407 +   This event handler can be used to process text strings before they are included
408 +   in the output e.g. to replace unprintable characters with alternative strings.
409 +   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
410 +
411 + 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
412 +   Uses "FindParam" if in order to find out if a parameter with a given name exists
413 +   and without raising and exception if it does not.
414 +
415 + 9. TIBQuery now uses IBX SQL Parser instead of the TParams SQL parser in order to ensure
416 +   consistency with SQL queries.
417 +
418 + 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
419 +    When true, SQL statement parameter names are parsed case sensitive. Note for
420 +    TIBDataSet only applies to Select query.
421 +
422 + 11. IBEvents: removing a TIBEvent component from a form should no longer result in
423 +    an IDE exception.
424 +
425 + 12. LocalDBSupport: initial database creation should now work correctly
426 +    when the schema source is an sql file.
427 +
428 + 13. TIBCMLocalDBSupport: new event handler "property OnProgressEvent: TOnProgressEvent"
429 +    when defined, this handler will be called by the internal TIBXScript during
430 +    initial database creation when the schema source is an sql file and may be used
431 +    to provide a visual indication of progress in console mode.
432 +
433 + 14. TCustomIBLocalDBSupport: new public property "InOnCreateDB: boolean". This is set
434 +    to true while a new local database is being created and its schema populated.
435 +    Useful in (e.g.) TIBDatabase.OnAfterConnect handler to suppress actions
436 +    when the database is disconnected/connected during the create DB procedure.
437 +
438 + 15. TIBXScript: any User/password parameters found in a CREATE DATABASE statement
439 +    are now always ignored and replaced by the user name and password provided as
440 +    the login parameters for the TIBDatabase referenced from the TIBXScript. The
441 +    IgnoreCreateDatabase property still applies and the CREATE DATABASE statement is
442 +    completely ignored if this property is true.
443 +
444 + 16. Code tidyup in IBTreeView: Node properties initialisation moved from TIBTreeView.AddNodes
445 +    to TIBTreeView.Added. An OnAddition event handler is no longer needed to initialise
446 +    ImageIndex and SelectImageIndex values on AddNode.
447 +
448 + 17. TIBDatabase.Attachment and TIBXServicesConnection.ServicesIntf properties are now
449 +    read/write. This should enabled (e.g.) multiple instances of TIBDatabase to share
450 +    the same database connection.
451 +
452 + 18. TIBDataSet and TIBQuery now support the TDataSet "Filter" property.
453 +    if provided, this should be an conditional SQL expression suitable for
454 +    including in an SQL Select statement "where" clause. If non-empty and the
455 +    "Filtered" property is true then the SQL expression provided as the value of
456 +    the "Filter" property is "ANDed" with any existing condition statement
457 +    in the SQL statement's "Where" clause.
458 +
459 +    If the "Filter" property is set at run time, the "Filtered" property is true
460 +    and the dataset is already open, then the dataset is closed and re-opened automatically.
461 +
462 +    The "Filter" condition may include IBX style parameters. In which case, their
463 +    value must be set by the dataset's "OnBeforeOpen" event handler.
464 +
465 +    This is a public property for TIBDataSet and TIBQuery query and intended for
466 +    use at run time.
467 +
468 +    Note: The property is a published property of TIBTable. The TIBTable functionality
469 +    is unaffected by this change.
470 +
471 + IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
472 +
473 + 1. Remove need to check for IsMultiThread by providing access to GUI timers via
474 +   IBGUIInterface. Note: master/detail delay timer does not apply to console
475 +   mode apps.
476 +
477 + 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
478 +   statement. This avoids problems if "Execute Block" is used as the Query.
479 +
480 + 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
481 +   internal SQL tokeniser routines.
482 +
483 + 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
484 +   as a select statement, with or without CTEs.
485 +
486 + 5. IBSQLParser: parser now recognises the "ROWS" clause.
487 +
488 + 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
489 +   internal SQL tokeniser routines.
490 +
491 + 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
492 +    being raised for valid set statements processed by a data formatter.
493 +
494 + 8. New published property for TIBDatabase and TIBXServicesConnection. This is
495 +   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
496 +   the path of the Firebird Library used by the database/services connection.
497 +
498 + 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
499 +   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
500 +   services connection.
501 +
502 + 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
503 +   or param name is not a valid SQL identifier.
504 +
505 + 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
506 +    view of whether the text box should be editable when no DataSource is specified.
507 +    TIBLookupComboEditBox has been updated to workaround this problem. As long as
508 +    ReadOnly is false, the text box is editable when no DataSource is specified.
509 +
510 + 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
511 +    the FBLIB environment variable. If you do not want to permit this then you
512 +    must modify the Register procedure in the design/IBDBReg.pas unit to remove
513 +    this setting.
514 +
515 + IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
516 +
517 + 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
518 +   Utf8EscapeControlChars
519 +
520 + IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
521 +
522 + IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
523 + all previous copies of the IBX source code tree before installing this release.
524 +
525 + The IBX packages used by most users have not changed, with one exception. The
526 + IBServices unit has been moved to the package iblegacyServices.lpk. To continue
527 + to use the IBServices unit in your applications, please add the iblegacyServices
528 + to the list of dependencies. To do this, open the Project Inspector and select
529 + Add->New Requirement and select "ibLegacyServices" from the list of available
530 + packages.
531 +
532 + 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
533 +   the IBServices unit providing what is intended to be a clearer and easier to
534 +   use set of IB Services components. See Chapter 10 of the IBX User Guide for
535 +   more information and the guide to "Firebird Service Management Using IBX".
536 +   As indicated above, the legacy services components are still available and
537 +   provided in a separate package. There is no need to update working applications
538 +   using the older versions except for an additional package dependency.
539 +
540 + 2. The IBX packages and source code tree have been re-organised in an attempt to
541 +   finally get rid of the "duplicate ppu" warnings. This re-organisation should
542 +   not affect existing users. Section 2.3 of the IBX User Guide describes the
543 +   new set of IBX packages.
544 +
545 + 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
546 +   updated to use the new Services API components.
547 +
548 + 4. The iblocal package has been updated to use the new Services API components.
549 +
550 + 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
551 +   TIBXSecurityService. It had been wrongly classified in the previous version
552 +   as a per database configuration item. It is global to a server and hence
553 +   correctly positioned as part of the Security Package. In the DBAdmin example,
554 +   the setting has moved to the mappings page.
555 +
556 + 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
557 +   are ignored.
558 +
559 + 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
560 +   closed before the database is dropped. Before and After Disconnect event handlers
561 +   are also fired.
562 +
563 + 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
564 +   is started and not just the first time.
565 +
566 + 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
567 +   depenendency with comp type.
568 +
569 + 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
570 +
571 + 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
572 +    then this is recognised and not ignored.
573 +
574 + 12. TIBDataSet, TIBQuery, TIBTable: additions:
575 +    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
576 +    function GetPerfStatistics(var stats: TPerfCounters): boolean;
577 +    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
578 +
579 +    GetRowsAffected returns the affected row counts from the last insert/update/delete
580 +    if EnableStatistics = true then GetPerfStatistics returns the current stats
581 +    counters for the select query. Note: stats accumulate after each fetch from
582 +    the database. To get total query cost after open, call the "Last" method
583 +    and then GetPerfStatistics.
584 +
585 +    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
586 +
587 + 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
588 +    in parenthesises.
589 +
590 + 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
591 +    SQL identifiers are always delimited by double quotes. If false, then they are
592 +    only delimited if the identifier is a reserved word, contains lower case or special
593 +    characters. Set this property to true to retain previous behaviour.
594 +
595 + 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
596 +    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
597 +
598 + 16. TIBDataSet, TIBQuery, TIBTable: addition:
599 +       property MasterDetailDelay: integer {defaults to zero}
600 +
601 +    When non-zero and the dataset is a detail table referencing a master table
602 +    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
603 +    then a synchronisation delay is added (in milliseconds) between the master
604 +    row changing and the detail dataset being re-opened. If the master dataset
605 +    is scrolled before the delay expires then the delay is reset. This can be used
606 +    to avoid performance overheads when scrolling through a large master dataset.
607 +
608 +    Note: uses fptimer and hence requires a thread manager. Under Linux the
609 +    chreads unit must be included in your project. TTimer is not used in order
610 +    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
611 +
612 + 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
613 +    with Extract Option eoDatabase.
614 +
615 + 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
616 +    When a deLayoutChanged event is reported on the ListSource dataset, the
617 +    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
618 +    relationship with the control's datasource (master).
619 +
620 + 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
621 +
622 + 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
623 +    stubs. Pedantic fix really, as procedures output in dependency order anyway.
624 +
625 + 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
626 +    DDL (Firebird 3 and later only).
627 +
628 + 22. TIBLookupComboBox Autocomplete Fixes:
629 +    i. Only appended text is now selected after autocomplete.
630 +    ii. Uppercase keys no longer ignored for autocomplete.
631 +    iii. Retain Prefix case is now honoured correctly.
632 +    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
633 +        before autocomplete performed. i.e. behaviour now the same as when
634 +        no DataSource assigned.
635 +
636 + 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
637 +    between SQL statements.
638 +
639 + 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
640 +    ObjectNames are converted to upper case before matching against metadata object
641 +    names, unless the objectname is delimited by double quotes, in which case, the
642 +    double quotes are removed and the remaining string is used (unmodified) to match
643 +    against the metadata object name.
644 +
645 +    If true then the ObjectName is used as is without modification and matched
646 +    against the metadata object name. No attempt is made to remove double quotes.
647 +
648 + 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
649 +    with eoTrigger, these extract types can be used to select only Database Triggers,
650 +    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
651 +
652 + 26. TIBXScript: If an exception occurs during the processing of a statement, the
653 +    statement separate character is now reset to the default (';').
654 +
655 + 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
656 +
657 + 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
658 +    a commit or reconnect statement and instead activated only when next SQL statement
659 +    is executed.
660 +
661 + 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
662 +
663 + 30. TIBXScript: case insensitive regex now used when matching statements instead of
664 +    converting statement to upper case.
665 +
666 + 31. TIBExtract: metadata comments now supported. New published property
667 +    IncludeMetaDataComments (default true). If true then metadata comments included
668 +    in extracted DDL. New Extract Object member eoComments. This may be used with
669 +    ExtractObject method to list all metadata comments.
670 +
671 + 32. TIBExtract: ListObjectNames method added.
672 +
673 + 33. Updated Database component editor to support additional connection string
674 +    types.
675 +
676 + IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
677 +
678 + NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
679 + AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
680 + RELEASE.
681 +
682 + NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
683 +
684 + 1. IBExtract: Identity columns - add additional check for null column for generator name.
685 +
686 + 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
687 +   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
688 +   information). However, this is also a very useful mechanism for returning updated computed by
689 +   column values. Values returned as a result of executing an Insert or Update statement
690 +   replace existing values in the current row for each corresponding column.
691 +
692 +   Previously, if a dataset's select query included read only (computed by) fields then
693 +   an automatic row refresh was performed after an insert or update query had been processed,
694 +   irrespective of the setting of the "ForcedUpdates" property. This has changed such
695 +   that an automatic refresh is no longer performed if an insert or update query contains
696 +   a returning clause that updates one or more fields on the current row. A full row
697 +   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
698 +   field values and the select query contains read only fields. Use of Insert/update
699 +   returning should be significantly more efficient than executing a refresh query.
700 +
701 +   This behaviour change is intended to be backwards compatible and there should be no need to change
702 +   existing programs, other than to improve performance by using the new capability.
703 +
704 + 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
705 +   they are called when the dataset row is being deleted, there is no value in
706 +   updating the current record from the query result. Instead, a new event handler
707 +   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
708 +   an OnDeleteReturning event handler is provided then it is called with the IResults returned
709 +   by the query. The event handler can then interrogate the query results and
710 +   perform whatever action is necessary. For example to confirm, to the user,
711 +   the deletion of a row with the returned values.
712 +
713 + 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
714 +   any Computed By or Identity Columns. The IBTables example has been updated to
715 +   illustrate the computation of the employee Full Name on update.
716 +
717 + 5. TIBTable: The GeneratorField property is now published.
718 +
719 + 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
720 +   When InsertSQL is generated, the Identity columns are not included in the list of values to
721 +   be inserted. A RETURNING clause is added to the insert statement to return the value of
722 +   each Identity column after the insert is executed.
723 +
724 + 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
725 +   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
726 +   Insert..Returning clause.
727 +
728 + 8. TIBGenerator: small performance improvement by not preparing query each time
729 +   a new value is generated.
730 +
731 + 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
732 +
733 + 10. Property editors will now sync table name to a System Table when "Include System
734 +    Tables" is selected and the query is for a System Table.
735 +
736 + 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
737 +    values are no longer converted to milliseconds from TDateTime and then back again
738 +    to TDateTime (the conversion to milliseconds is the default TDataset approach).
739 +
740 + 12. Property Editors handling of Stored Procedures.
741 +    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
742 +      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
743 +      query).
744 +    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
745 +
746 + 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
747 +    can be used to select a package. If non-empty, the stored procedure name is
748 +    expected to be a stored procedure defined in the specified package and the
749 +    generated SQL will be as required for a stored procedure located in a package.
750 +
751 + 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
752 +    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
753 +    which a stored procedure can be selected. With no package name selected, non-package
754 +    stored procedures are listed.
755 +
756 + 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
757 +    for password on reconnect.
758 +
759 + 16. TIBDatabase: use IAttachment for connection default character set id, code page
760 +    and character set name.
761 +
762 + 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
763 +    DB info lookups"
764 +
765 + 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
766 +
767 + 19. Add a property Editor for TIBUpdate.RefreshSQL.
768 +
769 + 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
770 +    parameters. This stops an exception being raised when the field cannot be
771 +    located in the record buffer.
772 +
773 + 21. Property Editors now automatically include System Tables when opened and when the query table
774 +    is a System Table.
775 +
776 + 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
777 +    This avoids errors due to a stale SQRB or SRB being used for the next query.
778 +
779 + 23. IBServices: Service attach parameters now include "expected_db". This is used to
780 +    add the SPB item isc_spb_expected_db. This names a database using
781 +    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
782 +    database. examples/services re-written to illustrate use of "expected_db".
783 +
784 + 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
785 +    This avoids truncated backups when the server returns a timeout (busy) response.
786 +
787 + 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
788 +
789 + 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
790 +    databasenames. These are respectively expanded to the local system's temp directory
791 +    (including trailing delimiter) or to a prescribed data directory (including
792 +    trailing delimiter). Under Unix systems the data directory is a hidden directory
793 +    in the user's home directory. The hidden directory name is either the string returned
794 +    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
795 +    Under Windows, the directory is the same as the Data Directory as decribed
796 +    above but instead prefixed by the User's application data path. These may be
797 +    used to improve application portability for Personal Databases.
798 +
799 + 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
800 +    this has not worked for a long time and is not useful either. FieldDefs should be
801 +    managed using the Fields Editor as with any other dataset. To access the fields
802 +    editor for a TIBTable component, double click on the component. The fields editor
803 +    is then displayed.
804 +
805 + 28. TIBDatabaseInfo: new properties/function
806 +     * DateDBCreated (returns date/time database created)
807 +     * TransactionCount (returns no. of active transactions)
808 +     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
809 +     * PagesFree (Firebird 3 or later)
810 +     * PagesUsed (Firebird 3 or later)
811 +     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
812 +     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
813 +
814 + 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
815 +
816 + 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
817 +
818 + 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
819 +    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
820 +
821 + 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
822 +    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
823 +    firing during backup and restore.
824 +
825 + 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
826 +    for verbose output using the new property "StatisticsRequested".
827 +    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
828 +
829 + 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
830 +
831 + 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
832 +    palette. This uses the online validation feature added in Firebird 2.5. The
833 +    services's properties enable inclusion/exclusion of tables and indexes using
834 +    regular expressions. See.
835 +    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
836 +
837 + 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
838 +    option on a database.
839 +
840 + 37. TIBCustomService: Assign method implemented to allow copying of service login
841 +    context between service API components. "Detach" method now only detaches
842 +    service when last reference to the service interface detaches. Tidy up of
843 +    code for SetActive and Attach methods including password hiding.
844 +
845 + 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
846 +    and used to determine the auth method and protocol used for the connection.
847 +
848 + 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
849 +    a Create Database Statement generated by IBX.
850 +
851 + 40. All IBServices now have an additional published property "PortNo". This may
852 +    be set to a non-standard port number when necessary. If zero then the default
853 +    port number is used.
854 +
855 + 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
856 +    and not just the mouse.
857 +
858 + 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
859 +
860 + 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
861 +    image index and selected image index for each node to be set from a database field.
862 +
863 + 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
864 +    then database schema includes grants to all users. If not present then the
865 +    only user grants included are those to User PUBLIC.
866 +
867 + 45. TIBTreeView: performance improvement. When expanding include both expanded node
868 +    and child nodes in dataset.
869 +
870 +
871 + IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
872 +
873 + 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
874 +   changes.
875 +
876 + 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
877 +   Bug could result in truncated multi-byte character set values.
878 +
879 + 3. Changes consequential on moving fbintf character set utility functions from
880 +   IFirebirdAPI to IAttachment.
881 +
882 + 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
883 +
884 + 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
885 +   results in autocomplete ignoring prefix text.
886 +
887 + 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
888 +   entering a new name into the text box.
889 +
890 + 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
891 +   Firebird rather than recomputing it.
892 +
893 + 8. Property Editor positioning tidy up: All IBX Property editors should now be
894 +   screen centre. Previously some were "poDesigned" which may be inappropriate
895 +   for multi monitor desktops.
896 +
897 + 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
898 +
899 + 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
900 +    a transaction and always reset the object.
901 +
902 + 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
903 +
904 + 13. TIBXScript: Allow for override of database filename in Create Database statements.
905 +
906 + 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
907 +    to a gbak format archive.
908 +
909 + 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
910 +
911 + 16. IBLocaldb: Drop database if error creating an empty database.
912 +
913 + 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
914 +    unless selected node not in current dataset.
915 +
916 + 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
917 +    to TIBCustomService, and IBlocalDB code tidy up.
918 +
919 + 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
920 +    behaviour due to uninitialised variable.
921 +
922 + 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
923 +    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
924 +
925 + 21. IBSQL: When Database changed ensure that all resources are freed.
926 +
927 + 22. IBCustomDataset: When database changed ensure that queries an unprepared.
928 +
929 + 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
930 +    * Line Wrap on SQL Token boundaries (on user command)
931 +    * auto-complete table names in drop down list of table names
932 +    * Double click on tablename or field name adds to SQL text
933 +
934 + 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
935 +
936 + 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
937 +    TVariantArray. Seems to avoid memory corruption in Windows (probably a
938 +    workaround for a problem in fpc 3.0.4 win64).
939 +
940 + 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
941 +
942 + 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
943 +
944 + IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
945 +
946 + 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
947 +   include remote system name.
948 +
949 + 2. TIBExtract: No longer include comment header and COMMIT statement for empty
950 +   tables when data included in output.
951 +
952 + 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
953 +   and timing information to be written to stdout. This may be used to locate
954 +   performance bottlenecks.
955 +
956 + 4. SQLParser: only call "OnChanging" event handler when value is different.
957 +
958 + 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
959 +
960 + 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
961 +   that BindFields is called when the query is next activated. Avoids FieldName
962 +   not found error.
963 +
964 + 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
965 +   purpose and allows the programmer to define any action they want for Update, Insert
966 +   or Delete. This may be complex SQL (similar to a Trigger), application specific
967 +   filtering of updates, or use of statements such as Grant or Revoke instead of
968 +   normal DML. See User Manual for more information.
969 +
970 + IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
971 +
972 + 1. TIBEvents: Fix uninitialised variable that could result in lost events.
973 +
974 + 2. TIBExtract: Added support for FB3 "USAGE" privilege.
975 +
976 + 3. TIBExtract: data formatted as Charset set "octets" is now output using
977 +   hexadecimal notation.
978 +
979 + 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
980 +   using a simple XML format.
981 +
982 + 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
983 +   grants to these objects.
984 +
985 + 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
986 +   dependency problems restoring complex databases.
987 +
988 + 7. TIBXScript: This component has been restructured to allow for the processing of
989 +   embedded XML in INSERT statements and to support interactive sources in addition
990 +   to non-interactive data sources such as files.
991 +
992 + 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
993 +
994 + 9. TIBXScript: ISQL compatiable Set statements are now supported:
995 +   SET SQL DIALECT
996 +   SET TERM
997 +   SET AUTODDL
998 +   SET BAIL
999 +   SET ECHO
1000 +   SET COUNT
1001 +   SET STATS
1002 +   SET NAMES <character set>
1003 +
1004 + 10. IBVersion unit added to hold current IBX Version Number information.
1005 +
1006 + 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
1007 +    and domain definitions.
1008 +
1009 + 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
1010 +    fully supported.
1011 +
1012 + 13. TIBExtract: when a database dump includes data, the generator values are now also set.
1013 +
1014 + 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
1015 +
1016 + IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
1017 +
1018 + See also doc/IBX4LazarusGuide.pdf for important information on
1019 + upgrading to IBX2.
1020 +
1021 + 1. Size property of TIBStringField is now the width in characters of the field
1022 +   and not the byte length. This applies only to multi-byte character sets such
1023 +   as UTF8. The original approach aligned with TStringField. However, the TStringField
1024 +   code is not recognised as a bug and hence this change to align the behaviour.
1025 +   The TStringField change is expected in fpc 3.2.0.
1026 +
1027 + 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
1028 +   true (default) then Size property value saved in the lfm is ignored. Size is
1029 +   always set from the dynamic information read from the database. It is unclear
1030 +   why anyone would want to override this and set Size to false.
1031 +
1032 + 3. ibxscript: should now handle correctly a Case..End statement within a procedure
1033 +   block.
1034 +
1035 + 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
1036 +   exist when an attempt is made to connect to it (run time only) then an attempt
1037 +   is made to create the database.
1038 +
1039 + 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
1040 +   has been successfully created as a result of a call to CreateDatabase or when
1041 +   creating a database after it was found not to exist.
1042 +
1043 + 6.  DBControlGrid: a race condition could result in the wrong row image being
1044 +    written to the cache. This has been avoided by a trip round the message
1045 +    loop before rendering the row image.
1046 +
1047 + 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
1048 +    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
1049 +    known to risk corrupt rendering of row images when the control is first
1050 +    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
1051 +    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
1052 +
1053 + 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
1054 +    a TDateEdit control located on an editor panel.
1055 +
1056 + 9.  TIBExtract: brought up-to-date plus many bug fixes.
1057 +
1058 + 10. DBControlGrid: Removed memory leak when updating rows.
1059 +
1060 + 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
1061 +
1062 + IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
1063 +
1064 + 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
1065 +   when target codepage is CP_NONE. This is a workaround for
1066 +   http://bugs.freepascal.org/view.php?id=30622.
1067 +
1068 + 2. DBLog option removed from TIBStatisticalService - not supported by server
1069 +   since Firebird 1.5.
1070 +
1071 + 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
1072 +   similar.
1073 +
1074 + 4. IBCodePage: updated mapping between codepages and character id.
1075 +
1076 + 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
1077 +   Firebird. Character sets with a char width of two are not UTF16.
1078 +
1079 + 6. Strings received from the database are now always transliterated into UTF8
1080 +   regardless of the database character set or connection character set. This
1081 +   is for compatibility with the LCL.
1082 +
1083 + IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
1084 +
1085 + 1. IBBlob: Defer reading of blob until read method called. This avoids having to
1086 +   read in an entire blob just to get the size of the blob. General performance
1087 +   improvement when opening datasets containing blobs.
1088 +
1089 + 2. Clearing a  Blob now sets the corresponding field's modified flag.
1090 +
1091 + 3. IBLookupCombo: When not performing auto-complete, original query sort order
1092 +   is now used.
1093 +
1094 + 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
1095 +   determined.
1096 +
1097 + 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
1098 +
1099 + 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
1100 +   lazarus 1.6.0
1101 +
1102 + 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
1103 +   compilation error.
1104 +
1105 + IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
1106 +
1107 + 1. No character set specified for connection: when a text blob is retrieved, the
1108 +  character set is determined by looking up the native character set using then
1109 +  Firebird API. Otherwise a text mode blob is assumed to have the same character
1110 +  set as the connection.
1111 +
1112 + 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
1113 +   for Login Dialog returing a change to the database path.
1114 +
1115 + 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
1116 +   to be changed from that given in the TIBDatabase/TIBServer component and for the
1117 +   entered value to be saved on a project specific basis (design time only).
1118 +
1119 + 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
1120 +   column fieldname. If they are the same then it is acts as a look up for the KeyValue
1121 +   Otherwise, it sets the column text to the selected ListField Value.
1122 +
1123 + 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
1124 +   column width.
1125 +
1126 + 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
1127 +   and a case insensitive search is requested.
1128 +
1129 + 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
1130 +   or column ListSource.
1131 +
1132 + 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
1133 +   unprepare) when closing and the text has not changed.
1134 +
1135 + 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
1136 +   Less likely to cause a cursor re-use error on Windows.
1137 +
1138 + 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
1139 +   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
1140 +
1141 + 11. TIBTreeView: Guard against nil destination on record changed
1142 +
1143 + 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
1144 +    string type with the code page set to reflect the returned field encoding after
1145 +    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
1146 +    earlier versions.
1147 +
1148 + 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
1149 +    will now result in transliteration to the code page specified for the Firebird driver
1150 +    if the assigned string has a different code page. FPC 3.0.0 onwards only.
1151 +
1152 + 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
1153 +    is ignored and the lc_ctype value, when the database is opened, is set to align with
1154 +    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
1155 +    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
1156 +    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
1157 +    the GETACP is used to determine the Windows code page.
1158 +
1159 + 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
1160 +    name used as the lc_ctype when the database was opened. Only valid while the
1161 +    Database is connected.
1162 +
1163 + 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
1164 +    id that corresponds to the DefaultCharSetName.
1165 +
1166 + IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
1167 +
1168 + 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
1169 +   path is given and database attach fails due to access permission issues on the
1170 +   temp directory or security database, then the attach is retried with "localhost:"
1171 +   prefixing the databasename. This should avoid problems when the database has to
1172 +   be accessed by a local (e.g. classic) server and libfbembed is used.
1173 +
1174 + 2. Windows: revised search order for Firebird DLL:
1175 +     i.   The Firebird Embedded Server in the application Directory.
1176 +     ii.  If the FIREBIRD environment variable is set then the directory this
1177 +          points to is searched for the FB Client DLL and then then underlying
1178 +          "bin" directory.
1179 +     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
1180 +          is used to locate the Firebird installation directory and the underlying
1181 +          "bin" directory is searched for the FB Client DLL.
1182 +     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
1183 +          are searched for the FB Client DLL.
1184 +     v.   The PATH Environment variable is used to search for the FB Client DLL.
1185 +     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
1186 +
1187 + 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
1188 +   See doc/readme.scriptengine and example applications.
1189 +
1190 + 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
1191 +   simplify the use of the embedded firebird server on both Linux and Windows platforms.
1192 +   See dpc/readme.localdatabase and example applications.
1193 +
1194 + 5. IBDynamicGrid: Reordering on column header click should now also work for
1195 +   dynamic columns.
1196 +
1197 + 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
1198 +   between incrementing/decrementing the lock count and signalling the event.
1199 +
1200 + IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
1201 +
1202 + 1.3.2 was never formally released and only made available as beta copies.
1203 +
1204 + 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
1205 +
1206 + 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
1207 +
1208 + 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
1209 +
1210 + 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
1211 +   i.e. when it is a calculated field
1212 +
1213 + 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
1214 +   This problem was due to a race condition between recalculating row heights and
1215 +   determining which row was selected by the mouse click. The row height calculation
1216 +   is now deferred by an extra trip round the message loop allowing the row to
1217 +   be always calculated on the current grid layout rather than risking it being
1218 +   calculated on the grid layout after the expanded row has been shrunk.
1219 +
1220 + 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
1221 +   Windows.
1222 +
1223 + 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
1224 +   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
1225 +   to be determined at runtime. See doc/readme.charactersets.html.
1226 +
1227 + 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
1228 +   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
1229 +
1230 + 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
1231 +   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
1232 +   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
1233 +
1234 +   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
1235 +   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
1236 +   implies no truncation.
1237 +
1238 + 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
1239 +
1240 + 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
1241 +   (avoids "Not in Edit Mode" error).
1242 +
1243 + 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
1244 +
1245 + 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
1246 +    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
1247 +
1248 + 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
1249 +
1250 + 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
1251 +
1252 + 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
1253 +
1254 + 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
1255 +
1256 + IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
1257 +
1258 + 1.   OnCloseUp Event Handler added to TDBLookupProperties
1259 +
1260 + 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
1261 +     problem with row size when exception is called.
1262 +
1263 + 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
1264 +
1265 + 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
1266 +     in a TCustomComboBox and ignores return key if in a TCustomMemo
1267 +
1268 + 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
1269 +     keyed in i.e. when autocomplete not performed
1270 +
1271 + 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
1272 +     console mode applications with all LCL required functions (builtin dialogs and
1273 +     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
1274 +     not included in your project, IBX should compile and link with a console mode program.
1275 +     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
1276 +     console mode application or the IDE will automatically assume that your
1277 +     application is GUI based. Instead, you should include the ibexpressconsolemode package.
1278 +
1279 +     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
1280 +     to use the built in dialogs and cursor management. IBDialogs is
1281 +     included by default if "ibexpress" is in your project source's "uses" clause.
1282 +     This should be the case for all projects created through the IDE. This is why
1283 +     you do not want to add the ibexpress package to console mode applications. The
1284 +     ibexpressconsolemode package has been created to allow console mode programs
1285 +     to avoid adding LCL dependencies when using IBX, while still having the
1286 +     unit search paths set up correctly.
1287 +
1288 +     Existing users should check to ensure that the "ibexpress" unit is included in
1289 +     each project's source file (*.lpr).
1290 +
1291 +     You may find that in order for the IDE to recognise that ibexpressconsolemode
1292 +     exists, you have to first open the package in the IDE and then close it. This
1293 +     adds it to the most recently accessed packages list. To make it permanently
1294 +     available, add the package name to lazarus' staticpackages.inc file.
1295 +
1296 +         Thanks to Julio Jiménez for suggesting support of console mode.
1297 +
1298 + 7.   SQL Parser can now accept quoted strings that include new lines
1299 +
1300 + 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
1301 +     of text on start of edit. This is particularly useful when tabbing to a
1302 +     column and then inserting text.
1303 +
1304 + 9.   New Examples provided for IB Services and ISQLMonitor.
1305 +
1306 + 10. Fix error when writing to blob streams that recorded only the last buffer
1307 +    write in the blob stream. In most cases, this did not cause a problem as the
1308 +    IB Blob Stream is written in a single write. However, with the TDBImage, write
1309 +    of a graphic type prefix was lost which caused a problem when the image could
1310 +        not be automatically recognised.
1311 +
1312 + 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
1313 +    already open" errors due to random numbers used for the cursor name being identical.
1314 +
1315 + 12. IBTable: corrected error that could result in an "Index out of bounds" error
1316 +    when opening the table and the Primary Key is the last or only column in the
1317 +    table. Thanks to Rick Hoover for the fix.
1318 +
1319 + 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
1320 +    of "UTF-8", and update list of available database character sets. Existing
1321 +    users should check the current lc_ctype setting in their applications.
1322 +
1323 + IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
1324 +
1325 + 1.  Firebird Services: avoid List Index error when opening a service with an
1326 +    empty Params property.
1327 +
1328 + 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
1329 +    Link now set up in Loaded method - avoids occasional failure to apply
1330 +    SQL markup on initial open.
1331 +
1332 + 3.  "Employees" example performance improvements when scrolling.
1333 +
1334 + 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
1335 +    TFrame. Force recaching of selected frame to avoid GTK race (results in a
1336 +    random image cached).
1337 +
1338 + 5.  DBControlGrid: Should now react to changes in panel height at run time.
1339 +
1340 + 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
1341 +    even when further rows exist.
1342 +
1343 + 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
1344 +    always be derived from panel height and setting this property can cause confusion.
1345 +    Note for existing projects: to avoid a missing property error at run time,
1346 +    each form using the DBControlGrid must be opened, updated and saved in the IDE
1347 +    in order to remove the property value from the lfm.
1348 +
1349 +
1350 + IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
1351 +
1352 + 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
1353 +    call Prepare before setting parameter values.
1354 +
1355 + 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
1356 +
1357 + 3.  Code tidyup and more robust handling of dsql information result vector.
1358 +
1359 + 4.  Support for centralised handling of transaction status changes. TIBTransaction
1360 +    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
1361 +    and "AfterExecQuery". The first three are called after the same event is called
1362 +    for an IBCustomDataSet descendent using the Transaction. The fourth is called
1363 +    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
1364 +    enable monitoring of transaction status changes for a given transaction to be
1365 +    handled in a single place. For example, when a change to the dataset occurs
1366 +    an indicator can be set that shows the user that in order to save changes,
1367 +    the transaction should be committed.  Rather than doing this per dataset, this
1368 +    can now be done per transaction.
1369 +
1370 + 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
1371 +    the dataset is scrolled. However, any changes to the current row are, by default,
1372 +    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
1373 +    have a new property "DataSetCloseAction" that adds automatic posting of changes
1374 +    on dataset close. If this property is set to dcDiscardChanges (default) then the
1375 +    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
1376 +    then IBX will attempt to post any unsaved changes before the dataset is closed
1377 +    (and after the BeforeClose event handler is called). The exception is when the
1378 +    dataset is being closed as a result of a transaction rollback. In this case,
1379 +    no action is taken and any unsaved  changes are discarded. This avoids both
1380 +    unnecessary overhead and the risk that a validation error may occur in the Post
1381 +    raising an exception and thereby preventing a rollback.
1382 +
1383 + 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
1384 +    In earlier versions, the Display Width was set to the maximum byte width rather than the character
1385 +    width. Display Widths are now corrected by dividing by the max byte width per character.
1386 +    For UTF8 character sets, the byte width is four and hence the Display Width will be
1387 +    the byte width divided by 4. The byte width of each character set is determined
1388 +    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
1389 +    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
1390 +
1391 + 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
1392 +
1393 + 8.  IBLookupComboEditBox: List should now always be restored to full list when the
1394 +    control loses focus. Default Key press default interval reduced to 200ms.
1395 +
1396 + 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
1397 +    when dataset rows are less than visible rows.
1398 +
1399 + 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
1400 +    does not exist or DataSet is empty. More responsive on dataset open. New event
1401 +    OnRestorePosition. Column sort disabled if no header row.
1402 +
1403 + 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
1404 +    while dataset state is dsInsert. Avoids posting errors.
1405 +
1406 + 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
1407 +    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
1408 +
1409 + 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
1410 +
1411 + 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
1412 +    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
1413 +    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
1414 +    always "posts" the current record regardless or whether or not it may be more appropriate
1415 +    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
1416 +    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
1417 +    as the first action of the "Post" method and allows the handler to convert the Post
1418 +    into a Cancel if that is the appropriate action on moving to a different row. This is
1419 +    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
1420 +    raised here, but it may still be more appropriate to validate a post and signal
1421 +    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
1422 +
1423 + 15. On Unix derived systems, the Firebird library name can now be given as a colon
1424 +    separated list. Each library name on the list is tried in turn, in left to right
1425 +    order with the first found being used as the firebird library. By default, on Linux,
1426 +    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
1427 +    overidden by the FBLIB environment variable or the OnGetLibraryName function.
1428 +
1429 +    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
1430 +    then it will still attempt to access the database via the Firebird Server and will
1431 +    require a username and password. If only the pathname is given, then the username
1432 +    and password should be omitted and the unix file permissions are used to grant
1433 +    access.
1434 +
1435 + IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
1436 +
1437 + 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
1438 +    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
1439 +    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
1440 +    corresponds to a row of the linked DataSource. Any data aware control on the
1441 +    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
1442 +
1443 + 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
1444 +   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
1445 +   takes place during database access. This may be useful when there are performance issues with
1446 +   the change of cursor. Setting the property to false suppresses the change of cursor.
1447 +
1448 + 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1449 +   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1450 +   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1451 +   making all changes permanent immediately rather than when the transaction is explicitly
1452 +   committed.
1453 +
1454 + 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1455 +   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1456 +
1457 + IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1458 +
1459 + Development version only.
1460 +
1461 + IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1462 +
1463 + 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1464 +   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1465 +   "Where" and "Having" clauses to implement user specified filters of arbitrary
1466 +   complexity.
1467 +
1468 + 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1469 +   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1470 +   These are:
1471 +
1472 +   - TIBLookupComboEditBox
1473 +   - TIBDynamicGrid
1474 +   - TIBTreeview
1475 +
1476 +   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1477 +   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1478 +   to revise the available list and restrict it to items that are prefixed by the
1479 +   typed text (either case sensitive or case insensitive). Autoinsert allows a
1480 +   newly typed entry to be added to the list dataset and included in the available
1481 +   list items.
1482 +
1483 +   TIBDynamicGrid is a TDBGrid descendent that provides for:
1484 +   - automatic resizing of selected columns to fill the available row length
1485 +   - automatic positioning and sizing of a "totals" control, typically at the
1486 +     column footer, on a per column basis.
1487 +   - DataSet resorting on header row click, sorting the dataset by the selected column.
1488 +     A second click on the same header cell reversed the sort order.
1489 +   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1490 +     is automatically expanded and a panel superimposed on it. The panel can have any
1491 +     number of child controls, typically data aware controls with the same datasource
1492 +     as the grid allowing for editing of additional fields and more complex editors.
1493 +   - Reselection of the same row following resorting.
1494 +   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1495 +     Its properties are specified on a per column basis and allows for one or more
1496 +     columns to have their values selected from a list provided by a dataset.
1497 +     Autocomplete and autoinsert are also available. The existing picklist editor
1498 +     is unaffected by the extension.
1499 +
1500 +   TIBTreeView is a data aware TCustomTreeView.
1501 +
1502 + 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1503 +   zero scale will no longer return an error. An Int64 will be returned instead.
1504 +
1505 + 4. TIBTransaction now has events for Before and After Transaction End and a new function
1506 +   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1507 +
1508 + 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1509 +   repeated multiple times.
1510 +
1511 + 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1512 +   check used to get in the way of using Stored Procedures, and "Update or Insert"
1513 +   statements.
1514 +
1515 + 7. Insert, Modify and Delete property Editors now support Query Generation from
1516 +   Stored Procedures.
1517 +
1518 + 8. Three new examples illustrate the use of the new IB Controls
1519 +
1520 +
1521 + IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1522 +
1523 + 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1524 +   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
1525 +   Gabor Boros for reporting this problem and for testing the improvements).
1526 +
1527 + 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
1528 +   See readme.field+param.names in the doc folder.
1529 +
1530 + 3. IBX SQL Editors will now automatically add double quotes around column names when the database
1531 +   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
1532 +
1533 + 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
1534 +
1535 + 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
1536 +   actions.
1537 +
1538 + 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
1539 +   thanks to Yuriy Kopnin for pointing this out).
1540 +
1541 + 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
1542 +
1543 + 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
1544 +   for both fields and parameter setting.
1545 +
1546 + 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
1547 +   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
1548 +
1549 + 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
1550 +    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
1551 +
1552 + 11. TIBTable now has a property editor for "MasterFields"
1553 +
1554 + 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
1555 +    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
1556 +
1557 + 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
1558 +    of settings is unrecognised. Selecting this radio button has no effect on the settings.
1559 +  
1560 +
1561   IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
1562  
1563   1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.

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