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Revision 298 by tony, Fri Apr 17 13:02:39 2020 UTC

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1 < IBX Change Log  version >  (1.0-1) Sun, 05 Aug 2012 19:28:14 +0100
1 > IBX Change Log  version (2.3-4 Build 12041) Fri, 17 Apr 2020 14:00:32 +0100
2 >
3 > 1.  TIBXDataSet and Generators: Generator Names that are not all upper case or
4 >    not SQL Identifiers are now supported.
5 >
6 > 2.  TIBXScript: Set Generator is no longer rejected as unrecognised SQL and is
7 >    passed to the Firebird engine for execution.
8 >
9 > 3.  TIBDataSet: Unidirectional datasets now give an error message if an attempt
10 >    is made to scroll back.
11 >
12 > 4.  New unit: IBMessages.pas. Contains only messages used by IBX and not FBIntf
13 >
14 > 5. TIBLookupComboEditBox: When generating auto-complete SQL, the ListField is now
15 >   only enclosed in double quotes in SQL dialect 3 and when it needs to be.
16 >
17 > 6. TIBLookupComboEditBox: when the list source opens, the ListField name is now
18 >   validated. If no match is found in the list of field names and the database has
19 >   been opened in SQL Dialect 3, then the ListField Name is converted to upper case
20 >   if it then matches a field name. Otherwise, a Listfield not valid exception occurs.
21 >
22 > 7. IBGeneratoreditor.pas: Add missing parenthesis around "IS" statement for compliance
23 >   with fpc 3.2.
24 >
25 > IBX Change Log  version (2.3-3 Build 11512) Fri, 28 Dec 2018 10:04:17 +0000
26 >
27 >
28 > 1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
29 >   and is used to override the default settings in the client side "firebird.conf" This
30 >   includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
31 >   Each line of the string list should be a setting in the same format as "firebird.conf".
32 >   For example "WireCompression = true" in order to request wire compression on the client side.
33 >
34 >   Note: explicit settings in the client side "firebird.conf" appear to take precedence
35 >   over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
36 >   also require a compatible setting in the server side "firebird.conf". For example
37 >   "WireCompression = true" must also be set in the server's "firebird.conf" for wire
38 >   compression to be used.
39 >
40 >   Whether or not WireCompression or WireCrypt are in use can be checked using the information
41 >   returned with the Client/Server protocol version. See ibx/examples/dbadmin and
42 >   ibx/examples/dbinfo for examples of how to display this information.
43 >
44 > 2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
45 >   is a "convenience" property. If set the "WireCompression=true" is added to the
46 >   ConfigOverrides. If unchecked then this setting is removed.
47 >
48 > 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
49 >   not "INT64".
50 >
51 > 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
52 >   These are:
53 >    property TimestampFormat: string;
54 >    property DateFormat: string;
55 >    property TimeFormat: string;
56 >
57 >   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
58 >   DATETIME and TIME. The format strings use the standard FPC date/time format
59 >   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
60 >
61 >   If any of the above properties are set to an empty string, then the locale default
62 >   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
63 >   locale default is extended by appending '.zzz' to include milliseconds.
64 >
65 >   TIBCSVDataOut by default sets these properties to the empty string, while the other
66 >   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
67 >
68 > 5. New published property for TIBCSVDataOut:
69 >     property QuoteStrings: boolean (default true)
70 >
71 >   If false then strings are unquoted, otherwise, the QuoteChar property value is
72 >   used to delimit each and every string in the output.
73 >
74 > 6. New published properties for TIBCSVDataOut:
75 >    property FieldSeparator: string;
76 >    property HeaderSeparator: string;
77 >
78 >   Respectively, these provide the separator character(s) used to separate fields
79 >   in data and header rows. Both default to ','.
80 >
81 > 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
82 >    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
83 >    property OnFormatTextString;
84 >
85 >   This event handler can be used to process text strings before they are included
86 >   in the output e.g. to replace unprintable characters with alternative strings.
87 >   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
88 >
89 > 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
90 >   Uses "FindParam" if in order to find out if a parameter with a given name exists
91 >   and without raising and exception if it does not.
92 >
93 > 9. TIBQuery now uses IBX SQL Parser instead of the TParams SQL parser in order to ensure
94 >   consistency with SQL queries.
95 >
96 > 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
97 >    When true, SQL statement parameter names are parsed case sensitive. Note for
98 >    TIBDataSet only applies to Select query.
99 >
100 > 11. IBEvents: removing a TIBEvent component from a form should no longer result in
101 >    an IDE exception.
102 >
103 > 12. LocalDBSupport: initial database creation should now work correctly
104 >    when the schema source is an sql file.
105 >
106 > 13. TIBCMLocalDBSupport: new event handler "property OnProgressEvent: TOnProgressEvent"
107 >    when defined, this handler will be called by the internal TIBXScript during
108 >    initial database creation when the schema source is an sql file and may be used
109 >    to provide a visual indication of progress in console mode.
110 >
111 > 14. TCustomIBLocalDBSupport: new public property "InOnCreateDB: boolean". This is set
112 >    to true while a new local database is being created and its schema populated.
113 >    Useful in (e.g.) TIBDatabase.OnAfterConnect handler to suppress actions
114 >    when the database is disconnected/connected during the create DB procedure.
115 >
116 > 15. TIBXScript: any User/password parameters found in a CREATE DATABASE statement
117 >    are now always ignored and replaced by the user name and password provided as
118 >    the login parameters for the TIBDatabase referenced from the TIBXScript. The
119 >    IgnoreCreateDatabase property still applies and the CREATE DATABASE statement is
120 >    completely ignored if this property is true.
121 >
122 > 16. Code tidyup in IBTreeView: Node properties initialisation moved from TIBTreeView.AddNodes
123 >    to TIBTreeView.Added. An OnAddition event handler is no longer needed to initialise
124 >    ImageIndex and SelectImageIndex values on AddNode.
125 >
126 > 17. TIBDatabase.Attachment and TIBXServicesConnection.ServicesIntf properties are now
127 >    read/write. This should enabled (e.g.) multiple instances of TIBDatabase to share
128 >    the same database connection.
129 >
130 > 18. TIBDataSet and TIBQuery now support the TDataSet "Filter" property.
131 >    if provided, this should be an conditional SQL expression suitable for
132 >    including in an SQL Select statement "where" clause. If non-empty and the
133 >    "Filtered" property is true then the SQL expression provided as the value of
134 >    the "Filter" property is "ANDed" with any existing condition statement
135 >    in the SQL statement's "Where" clause.
136 >
137 >    If the "Filter" property is set at run time, the "Filtered" property is true
138 >    and the dataset is already open, then the dataset is closed and re-opened automatically.
139 >
140 >    The "Filter" condition may include IBX style parameters. In which case, their
141 >    value must be set by the dataset's "OnBeforeOpen" event handler.
142 >
143 >    This is a public property for TIBDataSet and TIBQuery query and intended for
144 >    use at run time.
145 >
146 >    Note: The property is a published property of TIBTable. The TIBTable functionality
147 >    is unaffected by this change.
148 >
149 > IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
150 >
151 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
152 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
153 >   mode apps.
154 >
155 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
156 >   statement. This avoids problems if "Execute Block" is used as the Query.
157 >
158 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
159 >   internal SQL tokeniser routines.
160 >
161 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
162 >   as a select statement, with or without CTEs.
163 >
164 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
165 >
166 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
167 >   internal SQL tokeniser routines.
168 >
169 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
170 >    being raised for valid set statements processed by a data formatter.
171 >
172 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
173 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
174 >   the path of the Firebird Library used by the database/services connection.
175 >
176 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
177 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
178 >   services connection.
179 >
180 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
181 >   or param name is not a valid SQL identifier.
182 >
183 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
184 >    view of whether the text box should be editable when no DataSource is specified.
185 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
186 >    ReadOnly is false, the text box is editable when no DataSource is specified.
187 >
188 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
189 >    the FBLIB environment variable. If you do not want to permit this then you
190 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
191 >    this setting.
192 >
193 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
194 >
195 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
196 >   Utf8EscapeControlChars
197 >
198 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
199 >
200 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
201 > all previous copies of the IBX source code tree before installing this release.
202 >
203 > The IBX packages used by most users have not changed, with one exception. The
204 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
205 > to use the IBServices unit in your applications, please add the iblegacyServices
206 > to the list of dependencies. To do this, open the Project Inspector and select
207 > Add->New Requirement and select "ibLegacyServices" from the list of available
208 > packages.
209 >
210 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
211 >   the IBServices unit providing what is intended to be a clearer and easier to
212 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
213 >   more information and the guide to "Firebird Service Management Using IBX".
214 >   As indicated above, the legacy services components are still available and
215 >   provided in a separate package. There is no need to update working applications
216 >   using the older versions except for an additional package dependency.
217 >
218 > 2. The IBX packages and source code tree have been re-organised in an attempt to
219 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
220 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
221 >   new set of IBX packages.
222 >
223 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
224 >   updated to use the new Services API components.
225 >
226 > 4. The iblocal package has been updated to use the new Services API components.
227 >
228 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
229 >   TIBXSecurityService. It had been wrongly classified in the previous version
230 >   as a per database configuration item. It is global to a server and hence
231 >   correctly positioned as part of the Security Package. In the DBAdmin example,
232 >   the setting has moved to the mappings page.
233 >
234 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
235 >   are ignored.
236 >
237 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
238 >   closed before the database is dropped. Before and After Disconnect event handlers
239 >   are also fired.
240 >
241 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
242 >   is started and not just the first time.
243 >
244 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
245 >   depenendency with comp type.
246 >
247 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
248 >
249 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
250 >    then this is recognised and not ignored.
251 >
252 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
253 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
254 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
255 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
256 >
257 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
258 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
259 >    counters for the select query. Note: stats accumulate after each fetch from
260 >    the database. To get total query cost after open, call the "Last" method
261 >    and then GetPerfStatistics.
262 >
263 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
264 >
265 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
266 >    in parenthesises.
267 >
268 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
269 >    SQL identifiers are always delimited by double quotes. If false, then they are
270 >    only delimited if the identifier is a reserved word, contains lower case or special
271 >    characters. Set this property to true to retain previous behaviour.
272 >
273 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
274 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
275 >
276 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
277 >       property MasterDetailDelay: integer {defaults to zero}
278 >
279 >    When non-zero and the dataset is a detail table referencing a master table
280 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
281 >    then a synchronisation delay is added (in milliseconds) between the master
282 >    row changing and the detail dataset being re-opened. If the master dataset
283 >    is scrolled before the delay expires then the delay is reset. This can be used
284 >    to avoid performance overheads when scrolling through a large master dataset.
285 >
286 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
287 >    chreads unit must be included in your project. TTimer is not used in order
288 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
289 >
290 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
291 >    with Extract Option eoDatabase.
292 >
293 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
294 >    When a deLayoutChanged event is reported on the ListSource dataset, the
295 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
296 >    relationship with the control's datasource (master).
297 >
298 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
299 >
300 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
301 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
302 >
303 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
304 >    DDL (Firebird 3 and later only).
305 >
306 > 22. TIBLookupComboBox Autocomplete Fixes:
307 >    i. Only appended text is now selected after autocomplete.
308 >    ii. Uppercase keys no longer ignored for autocomplete.
309 >    iii. Retain Prefix case is now honoured correctly.
310 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
311 >        before autocomplete performed. i.e. behaviour now the same as when
312 >        no DataSource assigned.
313 >
314 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
315 >    between SQL statements.
316 >
317 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
318 >    ObjectNames are converted to upper case before matching against metadata object
319 >    names, unless the objectname is delimited by double quotes, in which case, the
320 >    double quotes are removed and the remaining string is used (unmodified) to match
321 >    against the metadata object name.
322 >
323 >    If true then the ObjectName is used as is without modification and matched
324 >    against the metadata object name. No attempt is made to remove double quotes.
325 >
326 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
327 >    with eoTrigger, these extract types can be used to select only Database Triggers,
328 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
329 >
330 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
331 >    statement separate character is now reset to the default (';').
332 >
333 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
334 >
335 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
336 >    a commit or reconnect statement and instead activated only when next SQL statement
337 >    is executed.
338 >
339 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
340 >
341 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
342 >    converting statement to upper case.
343 >
344 > 31. TIBExtract: metadata comments now supported. New published property
345 >    IncludeMetaDataComments (default true). If true then metadata comments included
346 >    in extracted DDL. New Extract Object member eoComments. This may be used with
347 >    ExtractObject method to list all metadata comments.
348 >
349 > 32. TIBExtract: ListObjectNames method added.
350 >
351 > 33. Updated Database component editor to support additional connection string
352 >    types.
353 >
354 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
355 >
356 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
357 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
358 > RELEASE.
359 >
360 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
361 >
362 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
363 >
364 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
365 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
366 >   information). However, this is also a very useful mechanism for returning updated computed by
367 >   column values. Values returned as a result of executing an Insert or Update statement
368 >   replace existing values in the current row for each corresponding column.
369 >
370 >   Previously, if a dataset's select query included read only (computed by) fields then
371 >   an automatic row refresh was performed after an insert or update query had been processed,
372 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
373 >   that an automatic refresh is no longer performed if an insert or update query contains
374 >   a returning clause that updates one or more fields on the current row. A full row
375 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
376 >   field values and the select query contains read only fields. Use of Insert/update
377 >   returning should be significantly more efficient than executing a refresh query.
378 >
379 >   This behaviour change is intended to be backwards compatible and there should be no need to change
380 >   existing programs, other than to improve performance by using the new capability.
381 >
382 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
383 >   they are called when the dataset row is being deleted, there is no value in
384 >   updating the current record from the query result. Instead, a new event handler
385 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
386 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
387 >   by the query. The event handler can then interrogate the query results and
388 >   perform whatever action is necessary. For example to confirm, to the user,
389 >   the deletion of a row with the returned values.
390 >
391 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
392 >   any Computed By or Identity Columns. The IBTables example has been updated to
393 >   illustrate the computation of the employee Full Name on update.
394 >
395 > 5. TIBTable: The GeneratorField property is now published.
396 >
397 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
398 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
399 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
400 >   each Identity column after the insert is executed.
401 >
402 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
403 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
404 >   Insert..Returning clause.
405 >
406 > 8. TIBGenerator: small performance improvement by not preparing query each time
407 >   a new value is generated.
408 >
409 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
410 >
411 > 10. Property editors will now sync table name to a System Table when "Include System
412 >    Tables" is selected and the query is for a System Table.
413 >
414 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
415 >    values are no longer converted to milliseconds from TDateTime and then back again
416 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
417 >
418 > 12. Property Editors handling of Stored Procedures.
419 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
420 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
421 >      query).
422 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
423 >
424 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
425 >    can be used to select a package. If non-empty, the stored procedure name is
426 >    expected to be a stored procedure defined in the specified package and the
427 >    generated SQL will be as required for a stored procedure located in a package.
428 >
429 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
430 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
431 >    which a stored procedure can be selected. With no package name selected, non-package
432 >    stored procedures are listed.
433 >
434 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
435 >    for password on reconnect.
436 >
437 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
438 >    and character set name.
439 >
440 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
441 >    DB info lookups"
442 >
443 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
444 >
445 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
446 >
447 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
448 >    parameters. This stops an exception being raised when the field cannot be
449 >    located in the record buffer.
450 >
451 > 21. Property Editors now automatically include System Tables when opened and when the query table
452 >    is a System Table.
453 >
454 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
455 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
456 >
457 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
458 >    add the SPB item isc_spb_expected_db. This names a database using
459 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
460 >    database. examples/services re-written to illustrate use of "expected_db".
461 >
462 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
463 >    This avoids truncated backups when the server returns a timeout (busy) response.
464 >
465 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
466 >
467 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
468 >    databasenames. These are respectively expanded to the local system's temp directory
469 >    (including trailing delimiter) or to a prescribed data directory (including
470 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
471 >    in the user's home directory. The hidden directory name is either the string returned
472 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
473 >    Under Windows, the directory is the same as the Data Directory as decribed
474 >    above but instead prefixed by the User's application data path. These may be
475 >    used to improve application portability for Personal Databases.
476 >
477 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
478 >    this has not worked for a long time and is not useful either. FieldDefs should be
479 >    managed using the Fields Editor as with any other dataset. To access the fields
480 >    editor for a TIBTable component, double click on the component. The fields editor
481 >    is then displayed.
482 >
483 > 28. TIBDatabaseInfo: new properties/function
484 >     * DateDBCreated (returns date/time database created)
485 >     * TransactionCount (returns no. of active transactions)
486 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
487 >     * PagesFree (Firebird 3 or later)
488 >     * PagesUsed (Firebird 3 or later)
489 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
490 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
491 >
492 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
493 >
494 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
495 >
496 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
497 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
498 >
499 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
500 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
501 >    firing during backup and restore.
502 >
503 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
504 >    for verbose output using the new property "StatisticsRequested".
505 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
506 >
507 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
508 >
509 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
510 >    palette. This uses the online validation feature added in Firebird 2.5. The
511 >    services's properties enable inclusion/exclusion of tables and indexes using
512 >    regular expressions. See.
513 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
514 >
515 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
516 >    option on a database.
517 >
518 > 37. TIBCustomService: Assign method implemented to allow copying of service login
519 >    context between service API components. "Detach" method now only detaches
520 >    service when last reference to the service interface detaches. Tidy up of
521 >    code for SetActive and Attach methods including password hiding.
522 >
523 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
524 >    and used to determine the auth method and protocol used for the connection.
525 >
526 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
527 >    a Create Database Statement generated by IBX.
528 >
529 > 40. All IBServices now have an additional published property "PortNo". This may
530 >    be set to a non-standard port number when necessary. If zero then the default
531 >    port number is used.
532 >
533 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
534 >    and not just the mouse.
535 >
536 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
537 >
538 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
539 >    image index and selected image index for each node to be set from a database field.
540 >
541 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
542 >    then database schema includes grants to all users. If not present then the
543 >    only user grants included are those to User PUBLIC.
544 >
545 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
546 >    and child nodes in dataset.
547 >
548 >
549 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
550 >
551 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
552 >   changes.
553 >
554 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
555 >   Bug could result in truncated multi-byte character set values.
556 >
557 > 3. Changes consequential on moving fbintf character set utility functions from
558 >   IFirebirdAPI to IAttachment.
559 >
560 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
561 >
562 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
563 >   results in autocomplete ignoring prefix text.
564 >
565 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
566 >   entering a new name into the text box.
567 >
568 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
569 >   Firebird rather than recomputing it.
570 >
571 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
572 >   screen centre. Previously some were "poDesigned" which may be inappropriate
573 >   for multi monitor desktops.
574 >
575 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
576 >
577 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
578 >    a transaction and always reset the object.
579 >
580 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
581 >
582 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
583 >
584 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
585 >    to a gbak format archive.
586 >
587 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
588 >
589 > 16. IBLocaldb: Drop database if error creating an empty database.
590 >
591 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
592 >    unless selected node not in current dataset.
593 >
594 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
595 >    to TIBCustomService, and IBlocalDB code tidy up.
596 >
597 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
598 >    behaviour due to uninitialised variable.
599 >
600 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
601 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
602 >
603 > 21. IBSQL: When Database changed ensure that all resources are freed.
604 >
605 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
606 >
607 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
608 >    * Line Wrap on SQL Token boundaries (on user command)
609 >    * auto-complete table names in drop down list of table names
610 >    * Double click on tablename or field name adds to SQL text
611 >
612 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
613 >
614 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
615 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
616 >    workaround for a problem in fpc 3.0.4 win64).
617 >
618 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
619 >
620 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
621 >
622 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
623 >
624 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
625 >   include remote system name.
626 >
627 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
628 >   tables when data included in output.
629 >
630 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
631 >   and timing information to be written to stdout. This may be used to locate
632 >   performance bottlenecks.
633 >
634 > 4. SQLParser: only call "OnChanging" event handler when value is different.
635 >
636 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
637 >
638 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
639 >   that BindFields is called when the query is next activated. Avoids FieldName
640 >   not found error.
641 >
642 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
643 >   purpose and allows the programmer to define any action they want for Update, Insert
644 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
645 >   filtering of updates, or use of statements such as Grant or Revoke instead of
646 >   normal DML. See User Manual for more information.
647 >
648 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
649 >
650 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
651 >
652 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
653 >
654 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
655 >   hexadecimal notation.
656 >
657 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
658 >   using a simple XML format.
659 >
660 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
661 >   grants to these objects.
662 >
663 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
664 >   dependency problems restoring complex databases.
665 >
666 > 7. TIBXScript: This component has been restructured to allow for the processing of
667 >   embedded XML in INSERT statements and to support interactive sources in addition
668 >   to non-interactive data sources such as files.
669 >
670 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
671 >
672 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
673 >   SET SQL DIALECT
674 >   SET TERM
675 >   SET AUTODDL
676 >   SET BAIL
677 >   SET ECHO
678 >   SET COUNT
679 >   SET STATS
680 >   SET NAMES <character set>
681 >
682 > 10. IBVersion unit added to hold current IBX Version Number information.
683 >
684 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
685 >    and domain definitions.
686 >
687 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
688 >    fully supported.
689 >
690 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
691 >
692 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
693 >
694 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
695 >
696 > See also doc/IBX4LazarusGuide.pdf for important information on
697 > upgrading to IBX2.
698 >
699 > 1. Size property of TIBStringField is now the width in characters of the field
700 >   and not the byte length. This applies only to multi-byte character sets such
701 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
702 >   code is not recognised as a bug and hence this change to align the behaviour.
703 >   The TStringField change is expected in fpc 3.2.0.
704 >
705 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
706 >   true (default) then Size property value saved in the lfm is ignored. Size is
707 >   always set from the dynamic information read from the database. It is unclear
708 >   why anyone would want to override this and set Size to false.
709 >
710 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
711 >   block.
712 >
713 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
714 >   exist when an attempt is made to connect to it (run time only) then an attempt
715 >   is made to create the database.
716 >
717 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
718 >   has been successfully created as a result of a call to CreateDatabase or when
719 >   creating a database after it was found not to exist.
720 >
721 > 6.  DBControlGrid: a race condition could result in the wrong row image being
722 >    written to the cache. This has been avoided by a trip round the message
723 >    loop before rendering the row image.
724 >
725 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
726 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
727 >    known to risk corrupt rendering of row images when the control is first
728 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
729 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
730 >
731 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
732 >    a TDateEdit control located on an editor panel.
733 >
734 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
735 >
736 > 10. DBControlGrid: Removed memory leak when updating rows.
737 >
738 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
739 >
740 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
741 >
742 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
743 >   when target codepage is CP_NONE. This is a workaround for
744 >   http://bugs.freepascal.org/view.php?id=30622.
745 >
746 > 2. DBLog option removed from TIBStatisticalService - not supported by server
747 >   since Firebird 1.5.
748 >
749 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
750 >   similar.
751 >
752 > 4. IBCodePage: updated mapping between codepages and character id.
753 >
754 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
755 >   Firebird. Character sets with a char width of two are not UTF16.
756 >
757 > 6. Strings received from the database are now always transliterated into UTF8
758 >   regardless of the database character set or connection character set. This
759 >   is for compatibility with the LCL.
760 >
761 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
762 >
763 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
764 >   read in an entire blob just to get the size of the blob. General performance
765 >   improvement when opening datasets containing blobs.
766 >
767 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
768 >
769 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
770 >   is now used.
771 >
772 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
773 >   determined.
774 >
775 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
776 >
777 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
778 >   lazarus 1.6.0
779 >
780 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
781 >   compilation error.
782 >
783 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
784 >
785 > 1. No character set specified for connection: when a text blob is retrieved, the
786 >  character set is determined by looking up the native character set using then
787 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
788 >  set as the connection.
789 >
790 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
791 >   for Login Dialog returing a change to the database path.
792 >
793 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
794 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
795 >   entered value to be saved on a project specific basis (design time only).
796 >
797 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
798 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
799 >   Otherwise, it sets the column text to the selected ListField Value.
800 >
801 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
802 >   column width.
803 >
804 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
805 >   and a case insensitive search is requested.
806 >
807 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
808 >   or column ListSource.
809 >
810 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
811 >   unprepare) when closing and the text has not changed.
812 >
813 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
814 >   Less likely to cause a cursor re-use error on Windows.
815 >
816 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
817 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
818 >
819 > 11. TIBTreeView: Guard against nil destination on record changed
820 >
821 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
822 >    string type with the code page set to reflect the returned field encoding after
823 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
824 >    earlier versions.
825 >
826 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
827 >    will now result in transliteration to the code page specified for the Firebird driver
828 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
829 >
830 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
831 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
832 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
833 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
834 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
835 >    the GETACP is used to determine the Windows code page.
836 >
837 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
838 >    name used as the lc_ctype when the database was opened. Only valid while the
839 >    Database is connected.
840 >
841 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
842 >    id that corresponds to the DefaultCharSetName.
843 >
844 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
845 >
846 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
847 >   path is given and database attach fails due to access permission issues on the
848 >   temp directory or security database, then the attach is retried with "localhost:"
849 >   prefixing the databasename. This should avoid problems when the database has to
850 >   be accessed by a local (e.g. classic) server and libfbembed is used.
851 >
852 > 2. Windows: revised search order for Firebird DLL:
853 >     i.   The Firebird Embedded Server in the application Directory.
854 >     ii.  If the FIREBIRD environment variable is set then the directory this
855 >          points to is searched for the FB Client DLL and then then underlying
856 >          "bin" directory.
857 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
858 >          is used to locate the Firebird installation directory and the underlying
859 >          "bin" directory is searched for the FB Client DLL.
860 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
861 >          are searched for the FB Client DLL.
862 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
863 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
864 >
865 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
866 >   See doc/readme.scriptengine and example applications.
867 >
868 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
869 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
870 >   See dpc/readme.localdatabase and example applications.
871 >
872 > 5. IBDynamicGrid: Reordering on column header click should now also work for
873 >   dynamic columns.
874 >
875 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
876 >   between incrementing/decrementing the lock count and signalling the event.
877 >
878 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
879 >
880 > 1.3.2 was never formally released and only made available as beta copies.
881 >
882 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
883 >
884 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
885 >
886 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
887 >
888 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
889 >   i.e. when it is a calculated field
890 >
891 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
892 >   This problem was due to a race condition between recalculating row heights and
893 >   determining which row was selected by the mouse click. The row height calculation
894 >   is now deferred by an extra trip round the message loop allowing the row to
895 >   be always calculated on the current grid layout rather than risking it being
896 >   calculated on the grid layout after the expanded row has been shrunk.
897 >
898 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
899 >   Windows.
900 >
901 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
902 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
903 >   to be determined at runtime. See doc/readme.charactersets.html.
904 >
905 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
906 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
907 >
908 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
909 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
910 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
911 >
912 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
913 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
914 >   implies no truncation.
915 >
916 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
917 >
918 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
919 >   (avoids "Not in Edit Mode" error).
920 >
921 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
922 >
923 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
924 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
925 >
926 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
927 >
928 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
929 >
930 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
931 >
932 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
933 >
934 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
935 >
936 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
937 >
938 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
939 >     problem with row size when exception is called.
940 >
941 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
942 >
943 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
944 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
945 >
946 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
947 >     keyed in i.e. when autocomplete not performed
948 >
949 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
950 >     console mode applications with all LCL required functions (builtin dialogs and
951 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
952 >     not included in your project, IBX should compile and link with a console mode program.
953 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
954 >     console mode application or the IDE will automatically assume that your
955 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
956 >
957 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
958 >     to use the built in dialogs and cursor management. IBDialogs is
959 >     included by default if "ibexpress" is in your project source's "uses" clause.
960 >     This should be the case for all projects created through the IDE. This is why
961 >     you do not want to add the ibexpress package to console mode applications. The
962 >     ibexpressconsolemode package has been created to allow console mode programs
963 >     to avoid adding LCL dependencies when using IBX, while still having the
964 >     unit search paths set up correctly.
965 >
966 >     Existing users should check to ensure that the "ibexpress" unit is included in
967 >     each project's source file (*.lpr).
968 >
969 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
970 >     exists, you have to first open the package in the IDE and then close it. This
971 >     adds it to the most recently accessed packages list. To make it permanently
972 >     available, add the package name to lazarus' staticpackages.inc file.
973 >
974 >         Thanks to Julio Jiménez for suggesting support of console mode.
975 >
976 > 7.   SQL Parser can now accept quoted strings that include new lines
977 >
978 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
979 >     of text on start of edit. This is particularly useful when tabbing to a
980 >     column and then inserting text.
981 >
982 > 9.   New Examples provided for IB Services and ISQLMonitor.
983 >
984 > 10. Fix error when writing to blob streams that recorded only the last buffer
985 >    write in the blob stream. In most cases, this did not cause a problem as the
986 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
987 >    of a graphic type prefix was lost which caused a problem when the image could
988 >        not be automatically recognised.
989 >
990 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
991 >    already open" errors due to random numbers used for the cursor name being identical.
992 >
993 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
994 >    when opening the table and the Primary Key is the last or only column in the
995 >    table. Thanks to Rick Hoover for the fix.
996 >
997 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
998 >    of "UTF-8", and update list of available database character sets. Existing
999 >    users should check the current lc_ctype setting in their applications.
1000 >
1001 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
1002 >
1003 > 1.  Firebird Services: avoid List Index error when opening a service with an
1004 >    empty Params property.
1005 >
1006 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
1007 >    Link now set up in Loaded method - avoids occasional failure to apply
1008 >    SQL markup on initial open.
1009 >
1010 > 3.  "Employees" example performance improvements when scrolling.
1011 >
1012 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
1013 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
1014 >    random image cached).
1015 >
1016 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
1017 >
1018 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
1019 >    even when further rows exist.
1020 >
1021 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
1022 >    always be derived from panel height and setting this property can cause confusion.
1023 >    Note for existing projects: to avoid a missing property error at run time,
1024 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
1025 >    in order to remove the property value from the lfm.
1026 >
1027 >
1028 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
1029 >
1030 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
1031 >    call Prepare before setting parameter values.
1032 >
1033 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
1034 >
1035 > 3.  Code tidyup and more robust handling of dsql information result vector.
1036 >
1037 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
1038 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
1039 >    and "AfterExecQuery". The first three are called after the same event is called
1040 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
1041 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
1042 >    enable monitoring of transaction status changes for a given transaction to be
1043 >    handled in a single place. For example, when a change to the dataset occurs
1044 >    an indicator can be set that shows the user that in order to save changes,
1045 >    the transaction should be committed.  Rather than doing this per dataset, this
1046 >    can now be done per transaction.
1047 >
1048 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
1049 >    the dataset is scrolled. However, any changes to the current row are, by default,
1050 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
1051 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
1052 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
1053 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
1054 >    then IBX will attempt to post any unsaved changes before the dataset is closed
1055 >    (and after the BeforeClose event handler is called). The exception is when the
1056 >    dataset is being closed as a result of a transaction rollback. In this case,
1057 >    no action is taken and any unsaved  changes are discarded. This avoids both
1058 >    unnecessary overhead and the risk that a validation error may occur in the Post
1059 >    raising an exception and thereby preventing a rollback.
1060 >
1061 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
1062 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
1063 >    width. Display Widths are now corrected by dividing by the max byte width per character.
1064 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
1065 >    the byte width divided by 4. The byte width of each character set is determined
1066 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
1067 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
1068 >
1069 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
1070 >
1071 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
1072 >    control loses focus. Default Key press default interval reduced to 200ms.
1073 >
1074 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
1075 >    when dataset rows are less than visible rows.
1076 >
1077 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
1078 >    does not exist or DataSet is empty. More responsive on dataset open. New event
1079 >    OnRestorePosition. Column sort disabled if no header row.
1080 >
1081 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
1082 >    while dataset state is dsInsert. Avoids posting errors.
1083 >
1084 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
1085 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
1086 >
1087 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
1088 >
1089 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
1090 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
1091 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
1092 >    always "posts" the current record regardless or whether or not it may be more appropriate
1093 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
1094 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
1095 >    as the first action of the "Post" method and allows the handler to convert the Post
1096 >    into a Cancel if that is the appropriate action on moving to a different row. This is
1097 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
1098 >    raised here, but it may still be more appropriate to validate a post and signal
1099 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
1100 >
1101 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
1102 >    separated list. Each library name on the list is tried in turn, in left to right
1103 >    order with the first found being used as the firebird library. By default, on Linux,
1104 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
1105 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
1106 >
1107 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
1108 >    then it will still attempt to access the database via the Firebird Server and will
1109 >    require a username and password. If only the pathname is given, then the username
1110 >    and password should be omitted and the unix file permissions are used to grant
1111 >    access.
1112 >
1113 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
1114 >
1115 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
1116 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
1117 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
1118 >    corresponds to a row of the linked DataSource. Any data aware control on the
1119 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
1120 >
1121 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
1122 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
1123 >   takes place during database access. This may be useful when there are performance issues with
1124 >   the change of cursor. Setting the property to false suppresses the change of cursor.
1125 >
1126 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1127 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1128 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1129 >   making all changes permanent immediately rather than when the transaction is explicitly
1130 >   committed.
1131 >
1132 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1133 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1134 >
1135 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1136 >
1137 > Development version only.
1138 >
1139 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1140 >
1141 > 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1142 >   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1143 >   "Where" and "Having" clauses to implement user specified filters of arbitrary
1144 >   complexity.
1145 >
1146 > 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1147 >   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1148 >   These are:
1149 >
1150 >   - TIBLookupComboEditBox
1151 >   - TIBDynamicGrid
1152 >   - TIBTreeview
1153 >
1154 >   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1155 >   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1156 >   to revise the available list and restrict it to items that are prefixed by the
1157 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
1158 >   newly typed entry to be added to the list dataset and included in the available
1159 >   list items.
1160 >
1161 >   TIBDynamicGrid is a TDBGrid descendent that provides for:
1162 >   - automatic resizing of selected columns to fill the available row length
1163 >   - automatic positioning and sizing of a "totals" control, typically at the
1164 >     column footer, on a per column basis.
1165 >   - DataSet resorting on header row click, sorting the dataset by the selected column.
1166 >     A second click on the same header cell reversed the sort order.
1167 >   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1168 >     is automatically expanded and a panel superimposed on it. The panel can have any
1169 >     number of child controls, typically data aware controls with the same datasource
1170 >     as the grid allowing for editing of additional fields and more complex editors.
1171 >   - Reselection of the same row following resorting.
1172 >   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1173 >     Its properties are specified on a per column basis and allows for one or more
1174 >     columns to have their values selected from a list provided by a dataset.
1175 >     Autocomplete and autoinsert are also available. The existing picklist editor
1176 >     is unaffected by the extension.
1177 >
1178 >   TIBTreeView is a data aware TCustomTreeView.
1179 >
1180 > 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1181 >   zero scale will no longer return an error. An Int64 will be returned instead.
1182 >
1183 > 4. TIBTransaction now has events for Before and After Transaction End and a new function
1184 >   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1185 >
1186 > 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1187 >   repeated multiple times.
1188 >
1189 > 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1190 >   check used to get in the way of using Stored Procedures, and "Update or Insert"
1191 >   statements.
1192 >
1193 > 7. Insert, Modify and Delete property Editors now support Query Generation from
1194 >   Stored Procedures.
1195 >
1196 > 8. Three new examples illustrate the use of the new IB Controls
1197 >
1198 >
1199 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1200 >
1201 > 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1202 >   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
1203 >   Gabor Boros for reporting this problem and for testing the improvements).
1204 >
1205 > 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
1206 >   See readme.field+param.names in the doc folder.
1207 >
1208 > 3. IBX SQL Editors will now automatically add double quotes around column names when the database
1209 >   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
1210 >
1211 > 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
1212 >
1213 > 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
1214 >   actions.
1215 >
1216 > 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
1217 >   thanks to Yuriy Kopnin for pointing this out).
1218 >
1219 > 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
1220 >
1221 > 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
1222 >   for both fields and parameter setting.
1223 >
1224 > 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
1225 >   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
1226 >
1227 > 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
1228 >    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
1229 >
1230 > 11. TIBTable now has a property editor for "MasterFields"
1231 >
1232 > 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
1233 >    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
1234 >
1235 > 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
1236 >    of settings is unrecognised. Selecting this radio button has no effect on the settings.
1237 >  
1238 >
1239 > IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
1240 >
1241 > 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
1242 >
1243 > IBX Change Log  version          (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
1244 >
1245 > 1. In a TIBCustomDataset descendent, a generator now only sets the value when
1246 >   it is null. This allows for alternative user defined setting of the generator
1247 >
1248 >   Many thanks to Julio Jiménez for this fix
1249 >
1250 > 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
1251 >   and suggests that the user may have forgotten to install it.
1252 >
1253 > IBX Change Log  version         (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
1254 >
1255 > 1. Conditional compilation used to limit registration of TIntegerField to
1256 >   Lazarus versions less than 1.1
1257 >
1258 > 2. When a database connection is created, character set is now by default set
1259 >   to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
1260 >   1250 to 1254.
1261 >
1262 >
1263 > IBX Change Log  version     (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
1264 >
1265 > 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
1266 >
1267 >
1268 > IBX Change Log  version    (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
1269  
1270   1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
1271     Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1

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