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Revision 17 by tony, Sat Dec 28 19:22:24 2013 UTC vs.
Revision 266 by tony, Wed Dec 26 18:34:32 2018 UTC

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1 + IBX Change Log  version                    (2.3-3) Wed, 26 Dec 2018 18:20:57 +0000
2 +
3 + This is rc1 for 2.2.3.
4 +
5 + 1. New property for TIBDatabase and TIBXServicesConnection. This is "WireCompression".
6 +   If this property is set to true then the Client will request WireCompression for
7 +   the connection. Note: "WireCompression = true" must be set in the server's
8 +   "firebird.conf". This property is overridden if "WireCompression = true" is set
9 +   in the client "firebird.conf" when wire compression is always requested by the client.
10 +
11 + IBX Change Log  version                   (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
12 +
13 + 1. Remove need to check for IsMultiThread by providing access to GUI timers via
14 +   IBGUIInterface. Note: master/detail delay timer does not apply to console
15 +   mode apps.
16 +
17 + 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
18 +   statement. This avoids problems if "Execute Block" is used as the Query.
19 +
20 + 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
21 +   internal SQL tokeniser routines.
22 +
23 + 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
24 +   as a select statement, with or without CTEs.
25 +
26 + 5. IBSQLParser: parser now recognises the "ROWS" clause.
27 +
28 + 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
29 +   internal SQL tokeniser routines.
30 +
31 + 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
32 +    being raised for valid set statements processed by a data formatter.
33 +
34 + 8. New published property for TIBDatabase and TIBXServicesConnection. This is
35 +   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
36 +   the path of the Firebird Library used by the database/services connection.
37 +
38 + 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
39 +   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
40 +   services connection.
41 +
42 + 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
43 +   or param name is not a valid SQL identifier.
44 +
45 + 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
46 +    view of whether the text box should be editable when no DataSource is specified.
47 +    TIBLookupComboEditBox has been updated to workaround this problem. As long as
48 +    ReadOnly is false, the text box is editable when no DataSource is specified.
49 +
50 + 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
51 +    the FBLIB environment variable. If you do not want to permit this then you
52 +    must modify the Register procedure in the design/IBDBReg.pas unit to remove
53 +    this setting.
54 +
55 + IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
56 +
57 + 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
58 +   Utf8EscapeControlChars
59 +
60 + IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
61 +
62 + IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
63 + all previous copies of the IBX source code tree before installing this release.
64 +
65 + The IBX packages used by most users have not changed, with one exception. The
66 + IBServices unit has been moved to the package iblegacyServices.lpk. To continue
67 + to use the IBServices unit in your applications, please add the iblegacyServices
68 + to the list of dependencies. To do this, open the Project Inspector and select
69 + Add->New Requirement and select "ibLegacyServices" from the list of available
70 + packages.
71 +
72 + 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
73 +   the IBServices unit providing what is intended to be a clearer and easier to
74 +   use set of IB Services components. See Chapter 10 of the IBX User Guide for
75 +   more information and the guide to "Firebird Service Management Using IBX".
76 +   As indicated above, the legacy services components are still available and
77 +   provided in a separate package. There is no need to update working applications
78 +   using the older versions except for an additional package dependency.
79 +
80 + 2. The IBX packages and source code tree have been re-organised in an attempt to
81 +   finally get rid of the "duplicate ppu" warnings. This re-organisation should
82 +   not affect existing users. Section 2.3 of the IBX User Guide describes the
83 +   new set of IBX packages.
84 +
85 + 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
86 +   updated to use the new Services API components.
87 +
88 + 4. The iblocal package has been updated to use the new Services API components.
89 +
90 + 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
91 +   TIBXSecurityService. It had been wrongly classified in the previous version
92 +   as a per database configuration item. It is global to a server and hence
93 +   correctly positioned as part of the Security Package. In the DBAdmin example,
94 +   the setting has moved to the mappings page.
95 +
96 + 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
97 +   are ignored.
98 +
99 + 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
100 +   closed before the database is dropped. Before and After Disconnect event handlers
101 +   are also fired.
102 +
103 + 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
104 +   is started and not just the first time.
105 +
106 + 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
107 +   depenendency with comp type.
108 +
109 + 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
110 +
111 + 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
112 +    then this is recognised and not ignored.
113 +
114 + 12. TIBDataSet, TIBQuery, TIBTable: additions:
115 +    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
116 +    function GetPerfStatistics(var stats: TPerfCounters): boolean;
117 +    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
118 +
119 +    GetRowsAffected returns the affected row counts from the last insert/update/delete
120 +    if EnableStatistics = true then GetPerfStatistics returns the current stats
121 +    counters for the select query. Note: stats accumulate after each fetch from
122 +    the database. To get total query cost after open, call the "Last" method
123 +    and then GetPerfStatistics.
124 +
125 +    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
126 +
127 + 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
128 +    in parenthesises.
129 +
130 + 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
131 +    SQL identifiers are always delimited by double quotes. If false, then they are
132 +    only delimited if the identifier is a reserved word, contains lower case or special
133 +    characters. Set this property to true to retain previous behaviour.
134 +
135 + 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
136 +    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
137 +
138 + 16. TIBDataSet, TIBQuery, TIBTable: addition:
139 +       property MasterDetailDelay: integer {defaults to zero}
140 +
141 +    When non-zero and the dataset is a detail table referencing a master table
142 +    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
143 +    then a synchronisation delay is added (in milliseconds) between the master
144 +    row changing and the detail dataset being re-opened. If the master dataset
145 +    is scrolled before the delay expires then the delay is reset. This can be used
146 +    to avoid performance overheads when scrolling through a large master dataset.
147 +
148 +    Note: uses fptimer and hence requires a thread manager. Under Linux the
149 +    chreads unit must be included in your project. TTimer is not used in order
150 +    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
151 +
152 + 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
153 +    with Extract Option eoDatabase.
154 +
155 + 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
156 +    When a deLayoutChanged event is reported on the ListSource dataset, the
157 +    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
158 +    relationship with the control's datasource (master).
159 +
160 + 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
161 +
162 + 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
163 +    stubs. Pedantic fix really, as procedures output in dependency order anyway.
164 +
165 + 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
166 +    DDL (Firebird 3 and later only).
167 +
168 + 22. TIBLookupComboBox Autocomplete Fixes:
169 +    i. Only appended text is now selected after autocomplete.
170 +    ii. Uppercase keys no longer ignored for autocomplete.
171 +    iii. Retain Prefix case is now honoured correctly.
172 +    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
173 +        before autocomplete performed. i.e. behaviour now the same as when
174 +        no DataSource assigned.
175 +
176 + 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
177 +    between SQL statements.
178 +
179 + 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
180 +    ObjectNames are converted to upper case before matching against metadata object
181 +    names, unless the objectname is delimited by double quotes, in which case, the
182 +    double quotes are removed and the remaining string is used (unmodified) to match
183 +    against the metadata object name.
184 +
185 +    If true then the ObjectName is used as is without modification and matched
186 +    against the metadata object name. No attempt is made to remove double quotes.
187 +
188 + 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
189 +    with eoTrigger, these extract types can be used to select only Database Triggers,
190 +    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
191 +
192 + 26. TIBXScript: If an exception occurs during the processing of a statement, the
193 +    statement separate character is now reset to the default (';').
194 +
195 + 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
196 +
197 + 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
198 +    a commit or reconnect statement and instead activated only when next SQL statement
199 +    is executed.
200 +
201 + 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
202 +
203 + 30. TIBXScript: case insensitive regex now used when matching statements instead of
204 +    converting statement to upper case.
205 +
206 + 31. TIBExtract: metadata comments now supported. New published property
207 +    IncludeMetaDataComments (default true). If true then metadata comments included
208 +    in extracted DDL. New Extract Object member eoComments. This may be used with
209 +    ExtractObject method to list all metadata comments.
210 +
211 + 32. TIBExtract: ListObjectNames method added.
212 +
213 + 33. Updated Database component editor to support additional connection string
214 +    types.
215 +
216 + IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
217 +
218 + NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
219 + AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
220 + RELEASE.
221 +
222 + NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
223 +
224 + 1. IBExtract: Identity columns - add additional check for null column for generator name.
225 +
226 + 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
227 +   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
228 +   information). However, this is also a very useful mechanism for returning updated computed by
229 +   column values. Values returned as a result of executing an Insert or Update statement
230 +   replace existing values in the current row for each corresponding column.
231 +
232 +   Previously, if a dataset's select query included read only (computed by) fields then
233 +   an automatic row refresh was performed after an insert or update query had been processed,
234 +   irrespective of the setting of the "ForcedUpdates" property. This has changed such
235 +   that an automatic refresh is no longer performed if an insert or update query contains
236 +   a returning clause that updates one or more fields on the current row. A full row
237 +   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
238 +   field values and the select query contains read only fields. Use of Insert/update
239 +   returning should be significantly more efficient than executing a refresh query.
240 +
241 +   This behaviour change is intended to be backwards compatible and there should be no need to change
242 +   existing programs, other than to improve performance by using the new capability.
243 +
244 + 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
245 +   they are called when the dataset row is being deleted, there is no value in
246 +   updating the current record from the query result. Instead, a new event handler
247 +   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
248 +   an OnDeleteReturning event handler is provided then it is called with the IResults returned
249 +   by the query. The event handler can then interrogate the query results and
250 +   perform whatever action is necessary. For example to confirm, to the user,
251 +   the deletion of a row with the returned values.
252 +
253 + 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
254 +   any Computed By or Identity Columns. The IBTables example has been updated to
255 +   illustrate the computation of the employee Full Name on update.
256 +
257 + 5. TIBTable: The GeneratorField property is now published.
258 +
259 + 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
260 +   When InsertSQL is generated, the Identity columns are not included in the list of values to
261 +   be inserted. A RETURNING clause is added to the insert statement to return the value of
262 +   each Identity column after the insert is executed.
263 +
264 + 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
265 +   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
266 +   Insert..Returning clause.
267 +
268 + 8. TIBGenerator: small performance improvement by not preparing query each time
269 +   a new value is generated.
270 +
271 + 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
272 +
273 + 10. Property editors will now sync table name to a System Table when "Include System
274 +    Tables" is selected and the query is for a System Table.
275 +
276 + 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
277 +    values are no longer converted to milliseconds from TDateTime and then back again
278 +    to TDateTime (the conversion to milliseconds is the default TDataset approach).
279 +
280 + 12. Property Editors handling of Stored Procedures.
281 +    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
282 +      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
283 +      query).
284 +    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
285 +
286 + 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
287 +    can be used to select a package. If non-empty, the stored procedure name is
288 +    expected to be a stored procedure defined in the specified package and the
289 +    generated SQL will be as required for a stored procedure located in a package.
290 +
291 + 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
292 +    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
293 +    which a stored procedure can be selected. With no package name selected, non-package
294 +    stored procedures are listed.
295 +
296 + 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
297 +    for password on reconnect.
298 +
299 + 16. TIBDatabase: use IAttachment for connection default character set id, code page
300 +    and character set name.
301 +
302 + 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
303 +    DB info lookups"
304 +
305 + 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
306 +
307 + 19. Add a property Editor for TIBUpdate.RefreshSQL.
308 +
309 + 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
310 +    parameters. This stops an exception being raised when the field cannot be
311 +    located in the record buffer.
312 +
313 + 21. Property Editors now automatically include System Tables when opened and when the query table
314 +    is a System Table.
315 +
316 + 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
317 +    This avoids errors due to a stale SQRB or SRB being used for the next query.
318 +
319 + 23. IBServices: Service attach parameters now include "expected_db". This is used to
320 +    add the SPB item isc_spb_expected_db. This names a database using
321 +    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
322 +    database. examples/services re-written to illustrate use of "expected_db".
323 +
324 + 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
325 +    This avoids truncated backups when the server returns a timeout (busy) response.
326 +
327 + 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
328 +
329 + 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
330 +    databasenames. These are respectively expanded to the local system's temp directory
331 +    (including trailing delimiter) or to a prescribed data directory (including
332 +    trailing delimiter). Under Unix systems the data directory is a hidden directory
333 +    in the user's home directory. The hidden directory name is either the string returned
334 +    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
335 +    Under Windows, the directory is the same as the Data Directory as decribed
336 +    above but instead prefixed by the User's application data path. These may be
337 +    used to improve application portability for Personal Databases.
338 +
339 + 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
340 +    this has not worked for a long time and is not useful either. FieldDefs should be
341 +    managed using the Fields Editor as with any other dataset. To access the fields
342 +    editor for a TIBTable component, double click on the component. The fields editor
343 +    is then displayed.
344 +
345 + 28. TIBDatabaseInfo: new properties/function
346 +     * DateDBCreated (returns date/time database created)
347 +     * TransactionCount (returns no. of active transactions)
348 +     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
349 +     * PagesFree (Firebird 3 or later)
350 +     * PagesUsed (Firebird 3 or later)
351 +     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
352 +     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
353 +
354 + 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
355 +
356 + 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
357 +
358 + 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
359 +    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
360 +
361 + 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
362 +    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
363 +    firing during backup and restore.
364 +
365 + 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
366 +    for verbose output using the new property "StatisticsRequested".
367 +    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
368 +
369 + 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
370 +
371 + 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
372 +    palette. This uses the online validation feature added in Firebird 2.5. The
373 +    services's properties enable inclusion/exclusion of tables and indexes using
374 +    regular expressions. See.
375 +    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
376 +
377 + 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
378 +    option on a database.
379 +
380 + 37. TIBCustomService: Assign method implemented to allow copying of service login
381 +    context between service API components. "Detach" method now only detaches
382 +    service when last reference to the service interface detaches. Tidy up of
383 +    code for SetActive and Attach methods including password hiding.
384 +
385 + 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
386 +    and used to determine the auth method and protocol used for the connection.
387 +
388 + 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
389 +    a Create Database Statement generated by IBX.
390 +
391 + 40. All IBServices now have an additional published property "PortNo". This may
392 +    be set to a non-standard port number when necessary. If zero then the default
393 +    port number is used.
394 +
395 + 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
396 +    and not just the mouse.
397 +
398 + 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
399 +
400 + 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
401 +    image index and selected image index for each node to be set from a database field.
402 +
403 + 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
404 +    then database schema includes grants to all users. If not present then the
405 +    only user grants included are those to User PUBLIC.
406 +
407 + 45. TIBTreeView: performance improvement. When expanding include both expanded node
408 +    and child nodes in dataset.
409 +
410 +
411 + IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
412 +
413 + 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
414 +   changes.
415 +
416 + 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
417 +   Bug could result in truncated multi-byte character set values.
418 +
419 + 3. Changes consequential on moving fbintf character set utility functions from
420 +   IFirebirdAPI to IAttachment.
421 +
422 + 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
423 +
424 + 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
425 +   results in autocomplete ignoring prefix text.
426 +
427 + 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
428 +   entering a new name into the text box.
429 +
430 + 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
431 +   Firebird rather than recomputing it.
432 +
433 + 8. Property Editor positioning tidy up: All IBX Property editors should now be
434 +   screen centre. Previously some were "poDesigned" which may be inappropriate
435 +   for multi monitor desktops.
436 +
437 + 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
438 +
439 + 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
440 +    a transaction and always reset the object.
441 +
442 + 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
443 +
444 + 13. TIBXScript: Allow for override of database filename in Create Database statements.
445 +
446 + 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
447 +    to a gbak format archive.
448 +
449 + 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
450 +
451 + 16. IBLocaldb: Drop database if error creating an empty database.
452 +
453 + 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
454 +    unless selected node not in current dataset.
455 +
456 + 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
457 +    to TIBCustomService, and IBlocalDB code tidy up.
458 +
459 + 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
460 +    behaviour due to uninitialised variable.
461 +
462 + 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
463 +    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
464 +
465 + 21. IBSQL: When Database changed ensure that all resources are freed.
466 +
467 + 22. IBCustomDataset: When database changed ensure that queries an unprepared.
468 +
469 + 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
470 +    * Line Wrap on SQL Token boundaries (on user command)
471 +    * auto-complete table names in drop down list of table names
472 +    * Double click on tablename or field name adds to SQL text
473 +
474 + 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
475 +
476 + 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
477 +    TVariantArray. Seems to avoid memory corruption in Windows (probably a
478 +    workaround for a problem in fpc 3.0.4 win64).
479 +
480 + 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
481 +
482 + 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
483 +
484 + IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
485 +
486 + 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
487 +   include remote system name.
488 +
489 + 2. TIBExtract: No longer include comment header and COMMIT statement for empty
490 +   tables when data included in output.
491 +
492 + 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
493 +   and timing information to be written to stdout. This may be used to locate
494 +   performance bottlenecks.
495 +
496 + 4. SQLParser: only call "OnChanging" event handler when value is different.
497 +
498 + 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
499 +
500 + 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
501 +   that BindFields is called when the query is next activated. Avoids FieldName
502 +   not found error.
503 +
504 + 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
505 +   purpose and allows the programmer to define any action they want for Update, Insert
506 +   or Delete. This may be complex SQL (similar to a Trigger), application specific
507 +   filtering of updates, or use of statements such as Grant or Revoke instead of
508 +   normal DML. See User Manual for more information.
509 +
510 + IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
511 +
512 + 1. TIBEvents: Fix uninitialised variable that could result in lost events.
513 +
514 + 2. TIBExtract: Added support for FB3 "USAGE" privilege.
515 +
516 + 3. TIBExtract: data formatted as Charset set "octets" is now output using
517 +   hexadecimal notation.
518 +
519 + 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
520 +   using a simple XML format.
521 +
522 + 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
523 +   grants to these objects.
524 +
525 + 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
526 +   dependency problems restoring complex databases.
527 +
528 + 7. TIBXScript: This component has been restructured to allow for the processing of
529 +   embedded XML in INSERT statements and to support interactive sources in addition
530 +   to non-interactive data sources such as files.
531 +
532 + 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
533 +
534 + 9. TIBXScript: ISQL compatiable Set statements are now supported:
535 +   SET SQL DIALECT
536 +   SET TERM
537 +   SET AUTODDL
538 +   SET BAIL
539 +   SET ECHO
540 +   SET COUNT
541 +   SET STATS
542 +   SET NAMES <character set>
543 +
544 + 10. IBVersion unit added to hold current IBX Version Number information.
545 +
546 + 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
547 +    and domain definitions.
548 +
549 + 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
550 +    fully supported.
551 +
552 + 13. TIBExtract: when a database dump includes data, the generator values are now also set.
553 +
554 + 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
555 +
556 + IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
557 +
558 + See also doc/IBX4LazarusGuide.pdf for important information on
559 + upgrading to IBX2.
560 +
561 + 1. Size property of TIBStringField is now the width in characters of the field
562 +   and not the byte length. This applies only to multi-byte character sets such
563 +   as UTF8. The original approach aligned with TStringField. However, the TStringField
564 +   code is not recognised as a bug and hence this change to align the behaviour.
565 +   The TStringField change is expected in fpc 3.2.0.
566 +
567 + 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
568 +   true (default) then Size property value saved in the lfm is ignored. Size is
569 +   always set from the dynamic information read from the database. It is unclear
570 +   why anyone would want to override this and set Size to false.
571 +
572 + 3. ibxscript: should now handle correctly a Case..End statement within a procedure
573 +   block.
574 +
575 + 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
576 +   exist when an attempt is made to connect to it (run time only) then an attempt
577 +   is made to create the database.
578 +
579 + 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
580 +   has been successfully created as a result of a call to CreateDatabase or when
581 +   creating a database after it was found not to exist.
582 +
583 + 6.  DBControlGrid: a race condition could result in the wrong row image being
584 +    written to the cache. This has been avoided by a trip round the message
585 +    loop before rendering the row image.
586 +
587 + 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
588 +    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
589 +    known to risk corrupt rendering of row images when the control is first
590 +    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
591 +    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
592 +
593 + 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
594 +    a TDateEdit control located on an editor panel.
595 +
596 + 9.  TIBExtract: brought up-to-date plus many bug fixes.
597 +
598 + 10. DBControlGrid: Removed memory leak when updating rows.
599 +
600 + 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
601 +
602 + IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
603 +
604 + 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
605 +   when target codepage is CP_NONE. This is a workaround for
606 +   http://bugs.freepascal.org/view.php?id=30622.
607 +
608 + 2. DBLog option removed from TIBStatisticalService - not supported by server
609 +   since Firebird 1.5.
610 +
611 + 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
612 +   similar.
613 +
614 + 4. IBCodePage: updated mapping between codepages and character id.
615 +
616 + 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
617 +   Firebird. Character sets with a char width of two are not UTF16.
618 +
619 + 6. Strings received from the database are now always transliterated into UTF8
620 +   regardless of the database character set or connection character set. This
621 +   is for compatibility with the LCL.
622 +
623 + IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
624 +
625 + 1. IBBlob: Defer reading of blob until read method called. This avoids having to
626 +   read in an entire blob just to get the size of the blob. General performance
627 +   improvement when opening datasets containing blobs.
628 +
629 + 2. Clearing a  Blob now sets the corresponding field's modified flag.
630 +
631 + 3. IBLookupCombo: When not performing auto-complete, original query sort order
632 +   is now used.
633 +
634 + 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
635 +   determined.
636 +
637 + 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
638 +
639 + 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
640 +   lazarus 1.6.0
641 +
642 + 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
643 +   compilation error.
644 +
645 + IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
646 +
647 + 1. No character set specified for connection: when a text blob is retrieved, the
648 +  character set is determined by looking up the native character set using then
649 +  Firebird API. Otherwise a text mode blob is assumed to have the same character
650 +  set as the connection.
651 +
652 + 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
653 +   for Login Dialog returing a change to the database path.
654 +
655 + 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
656 +   to be changed from that given in the TIBDatabase/TIBServer component and for the
657 +   entered value to be saved on a project specific basis (design time only).
658 +
659 + 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
660 +   column fieldname. If they are the same then it is acts as a look up for the KeyValue
661 +   Otherwise, it sets the column text to the selected ListField Value.
662 +
663 + 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
664 +   column width.
665 +
666 + 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
667 +   and a case insensitive search is requested.
668 +
669 + 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
670 +   or column ListSource.
671 +
672 + 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
673 +   unprepare) when closing and the text has not changed.
674 +
675 + 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
676 +   Less likely to cause a cursor re-use error on Windows.
677 +
678 + 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
679 +   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
680 +
681 + 11. TIBTreeView: Guard against nil destination on record changed
682 +
683 + 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
684 +    string type with the code page set to reflect the returned field encoding after
685 +    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
686 +    earlier versions.
687 +
688 + 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
689 +    will now result in transliteration to the code page specified for the Firebird driver
690 +    if the assigned string has a different code page. FPC 3.0.0 onwards only.
691 +
692 + 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
693 +    is ignored and the lc_ctype value, when the database is opened, is set to align with
694 +    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
695 +    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
696 +    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
697 +    the GETACP is used to determine the Windows code page.
698 +
699 + 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
700 +    name used as the lc_ctype when the database was opened. Only valid while the
701 +    Database is connected.
702 +
703 + 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
704 +    id that corresponds to the DefaultCharSetName.
705 +
706 + IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
707 +
708 + 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
709 +   path is given and database attach fails due to access permission issues on the
710 +   temp directory or security database, then the attach is retried with "localhost:"
711 +   prefixing the databasename. This should avoid problems when the database has to
712 +   be accessed by a local (e.g. classic) server and libfbembed is used.
713 +
714 + 2. Windows: revised search order for Firebird DLL:
715 +     i.   The Firebird Embedded Server in the application Directory.
716 +     ii.  If the FIREBIRD environment variable is set then the directory this
717 +          points to is searched for the FB Client DLL and then then underlying
718 +          "bin" directory.
719 +     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
720 +          is used to locate the Firebird installation directory and the underlying
721 +          "bin" directory is searched for the FB Client DLL.
722 +     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
723 +          are searched for the FB Client DLL.
724 +     v.   The PATH Environment variable is used to search for the FB Client DLL.
725 +     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
726 +
727 + 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
728 +   See doc/readme.scriptengine and example applications.
729 +
730 + 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
731 +   simplify the use of the embedded firebird server on both Linux and Windows platforms.
732 +   See dpc/readme.localdatabase and example applications.
733 +
734 + 5. IBDynamicGrid: Reordering on column header click should now also work for
735 +   dynamic columns.
736 +
737 + 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
738 +   between incrementing/decrementing the lock count and signalling the event.
739 +
740 + IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
741 +
742 + 1.3.2 was never formally released and only made available as beta copies.
743 +
744 + 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
745 +
746 + 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
747 +
748 + 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
749 +
750 + 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
751 +   i.e. when it is a calculated field
752 +
753 + 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
754 +   This problem was due to a race condition between recalculating row heights and
755 +   determining which row was selected by the mouse click. The row height calculation
756 +   is now deferred by an extra trip round the message loop allowing the row to
757 +   be always calculated on the current grid layout rather than risking it being
758 +   calculated on the grid layout after the expanded row has been shrunk.
759 +
760 + 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
761 +   Windows.
762 +
763 + 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
764 +   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
765 +   to be determined at runtime. See doc/readme.charactersets.html.
766 +
767 + 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
768 +   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
769 +
770 + 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
771 +   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
772 +   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
773 +
774 +   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
775 +   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
776 +   implies no truncation.
777 +
778 + 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
779 +
780 + 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
781 +   (avoids "Not in Edit Mode" error).
782 +
783 + 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
784 +
785 + 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
786 +    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
787 +
788 + 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
789 +
790 + 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
791 +
792 + 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
793 +
794 + 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
795 +
796 + IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
797 +
798 + 1.   OnCloseUp Event Handler added to TDBLookupProperties
799 +
800 + 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
801 +     problem with row size when exception is called.
802 +
803 + 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
804 +
805 + 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
806 +     in a TCustomComboBox and ignores return key if in a TCustomMemo
807 +
808 + 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
809 +     keyed in i.e. when autocomplete not performed
810 +
811 + 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
812 +     console mode applications with all LCL required functions (builtin dialogs and
813 +     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
814 +     not included in your project, IBX should compile and link with a console mode program.
815 +     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
816 +     console mode application or the IDE will automatically assume that your
817 +     application is GUI based. Instead, you should include the ibexpressconsolemode package.
818 +
819 +     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
820 +     to use the built in dialogs and cursor management. IBDialogs is
821 +     included by default if "ibexpress" is in your project source's "uses" clause.
822 +     This should be the case for all projects created through the IDE. This is why
823 +     you do not want to add the ibexpress package to console mode applications. The
824 +     ibexpressconsolemode package has been created to allow console mode programs
825 +     to avoid adding LCL dependencies when using IBX, while still having the
826 +     unit search paths set up correctly.
827 +
828 +     Existing users should check to ensure that the "ibexpress" unit is included in
829 +     each project's source file (*.lpr).
830 +
831 +     You may find that in order for the IDE to recognise that ibexpressconsolemode
832 +     exists, you have to first open the package in the IDE and then close it. This
833 +     adds it to the most recently accessed packages list. To make it permanently
834 +     available, add the package name to lazarus' staticpackages.inc file.
835 +
836 +         Thanks to Julio Jiménez for suggesting support of console mode.
837 +
838 + 7.   SQL Parser can now accept quoted strings that include new lines
839 +
840 + 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
841 +     of text on start of edit. This is particularly useful when tabbing to a
842 +     column and then inserting text.
843 +
844 + 9.   New Examples provided for IB Services and ISQLMonitor.
845 +
846 + 10. Fix error when writing to blob streams that recorded only the last buffer
847 +    write in the blob stream. In most cases, this did not cause a problem as the
848 +    IB Blob Stream is written in a single write. However, with the TDBImage, write
849 +    of a graphic type prefix was lost which caused a problem when the image could
850 +        not be automatically recognised.
851 +
852 + 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
853 +    already open" errors due to random numbers used for the cursor name being identical.
854 +
855 + 12. IBTable: corrected error that could result in an "Index out of bounds" error
856 +    when opening the table and the Primary Key is the last or only column in the
857 +    table. Thanks to Rick Hoover for the fix.
858 +
859 + 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
860 +    of "UTF-8", and update list of available database character sets. Existing
861 +    users should check the current lc_ctype setting in their applications.
862 +
863 + IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
864 +
865 + 1.  Firebird Services: avoid List Index error when opening a service with an
866 +    empty Params property.
867 +
868 + 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
869 +    Link now set up in Loaded method - avoids occasional failure to apply
870 +    SQL markup on initial open.
871 +
872 + 3.  "Employees" example performance improvements when scrolling.
873 +
874 + 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
875 +    TFrame. Force recaching of selected frame to avoid GTK race (results in a
876 +    random image cached).
877 +
878 + 5.  DBControlGrid: Should now react to changes in panel height at run time.
879 +
880 + 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
881 +    even when further rows exist.
882 +
883 + 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
884 +    always be derived from panel height and setting this property can cause confusion.
885 +    Note for existing projects: to avoid a missing property error at run time,
886 +    each form using the DBControlGrid must be opened, updated and saved in the IDE
887 +    in order to remove the property value from the lfm.
888 +
889 +
890 + IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
891 +
892 + 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
893 +    call Prepare before setting parameter values.
894 +
895 + 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
896 +
897 + 3.  Code tidyup and more robust handling of dsql information result vector.
898 +
899 + 4.  Support for centralised handling of transaction status changes. TIBTransaction
900 +    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
901 +    and "AfterExecQuery". The first three are called after the same event is called
902 +    for an IBCustomDataSet descendent using the Transaction. The fourth is called
903 +    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
904 +    enable monitoring of transaction status changes for a given transaction to be
905 +    handled in a single place. For example, when a change to the dataset occurs
906 +    an indicator can be set that shows the user that in order to save changes,
907 +    the transaction should be committed.  Rather than doing this per dataset, this
908 +    can now be done per transaction.
909 +
910 + 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
911 +    the dataset is scrolled. However, any changes to the current row are, by default,
912 +    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
913 +    have a new property "DataSetCloseAction" that adds automatic posting of changes
914 +    on dataset close. If this property is set to dcDiscardChanges (default) then the
915 +    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
916 +    then IBX will attempt to post any unsaved changes before the dataset is closed
917 +    (and after the BeforeClose event handler is called). The exception is when the
918 +    dataset is being closed as a result of a transaction rollback. In this case,
919 +    no action is taken and any unsaved  changes are discarded. This avoids both
920 +    unnecessary overhead and the risk that a validation error may occur in the Post
921 +    raising an exception and thereby preventing a rollback.
922 +
923 + 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
924 +    In earlier versions, the Display Width was set to the maximum byte width rather than the character
925 +    width. Display Widths are now corrected by dividing by the max byte width per character.
926 +    For UTF8 character sets, the byte width is four and hence the Display Width will be
927 +    the byte width divided by 4. The byte width of each character set is determined
928 +    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
929 +    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
930 +
931 + 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
932 +
933 + 8.  IBLookupComboEditBox: List should now always be restored to full list when the
934 +    control loses focus. Default Key press default interval reduced to 200ms.
935 +
936 + 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
937 +    when dataset rows are less than visible rows.
938 +
939 + 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
940 +    does not exist or DataSet is empty. More responsive on dataset open. New event
941 +    OnRestorePosition. Column sort disabled if no header row.
942 +
943 + 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
944 +    while dataset state is dsInsert. Avoids posting errors.
945 +
946 + 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
947 +    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
948 +
949 + 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
950 +
951 + 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
952 +    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
953 +    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
954 +    always "posts" the current record regardless or whether or not it may be more appropriate
955 +    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
956 +    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
957 +    as the first action of the "Post" method and allows the handler to convert the Post
958 +    into a Cancel if that is the appropriate action on moving to a different row. This is
959 +    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
960 +    raised here, but it may still be more appropriate to validate a post and signal
961 +    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
962 +
963 + 15. On Unix derived systems, the Firebird library name can now be given as a colon
964 +    separated list. Each library name on the list is tried in turn, in left to right
965 +    order with the first found being used as the firebird library. By default, on Linux,
966 +    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
967 +    overidden by the FBLIB environment variable or the OnGetLibraryName function.
968 +
969 +    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
970 +    then it will still attempt to access the database via the Firebird Server and will
971 +    require a username and password. If only the pathname is given, then the username
972 +    and password should be omitted and the unix file permissions are used to grant
973 +    access.
974 +
975 + IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
976 +
977 + 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
978 +    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
979 +    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
980 +    corresponds to a row of the linked DataSource. Any data aware control on the
981 +    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
982 +
983 + 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
984 +   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
985 +   takes place during database access. This may be useful when there are performance issues with
986 +   the change of cursor. Setting the property to false suppresses the change of cursor.
987 +
988 + 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
989 +   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
990 +   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
991 +   making all changes permanent immediately rather than when the transaction is explicitly
992 +   committed.
993 +
994 + 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
995 +   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
996 +
997 + IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
998 +
999 + Development version only.
1000 +
1001 + IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1002 +
1003 + 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1004 +   This is typically used during an "OnBeforeOpen" event handler to manipulate the
1005 +   "Where" and "Having" clauses to implement user specified filters of arbitrary
1006 +   complexity.
1007 +
1008 + 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
1009 +   three new data aware controls dependent on IBX and which make use of the SQL Parser.
1010 +   These are:
1011 +
1012 +   - TIBLookupComboEditBox
1013 +   - TIBDynamicGrid
1014 +   - TIBTreeview
1015 +
1016 +   TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1017 +   of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1018 +   to revise the available list and restrict it to items that are prefixed by the
1019 +   typed text (either case sensitive or case insensitive). Autoinsert allows a
1020 +   newly typed entry to be added to the list dataset and included in the available
1021 +   list items.
1022 +
1023 +   TIBDynamicGrid is a TDBGrid descendent that provides for:
1024 +   - automatic resizing of selected columns to fill the available row length
1025 +   - automatic positioning and sizing of a "totals" control, typically at the
1026 +     column footer, on a per column basis.
1027 +   - DataSet resorting on header row click, sorting the dataset by the selected column.
1028 +     A second click on the same header cell reversed the sort order.
1029 +   - Support for a "Panel Editor". That is on clicking the indicator column, the row
1030 +     is automatically expanded and a panel superimposed on it. The panel can have any
1031 +     number of child controls, typically data aware controls with the same datasource
1032 +     as the grid allowing for editing of additional fields and more complex editors.
1033 +   - Reselection of the same row following resorting.
1034 +   - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
1035 +     Its properties are specified on a per column basis and allows for one or more
1036 +     columns to have their values selected from a list provided by a dataset.
1037 +     Autocomplete and autoinsert are also available. The existing picklist editor
1038 +     is unaffected by the extension.
1039 +
1040 +   TIBTreeView is a data aware TCustomTreeView.
1041 +
1042 + 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
1043 +   zero scale will no longer return an error. An Int64 will be returned instead.
1044 +
1045 + 4. TIBTransaction now has events for Before and After Transaction End and a new function
1046 +   "GetEndAction" allowing the EndAction to be accessed by these event handlers.
1047 +
1048 + 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
1049 +   repeated multiple times.
1050 +
1051 + 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
1052 +   check used to get in the way of using Stored Procedures, and "Update or Insert"
1053 +   statements.
1054 +
1055 + 7. Insert, Modify and Delete property Editors now support Query Generation from
1056 +   Stored Procedures.
1057 +
1058 + 8. Three new examples illustrate the use of the new IB Controls
1059 +
1060 +
1061 + IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1062 +
1063 + 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1064 +   setting performance. See "readme.field+param.names in the doc folder.(Thanks to
1065 +   Gabor Boros for reporting this problem and for testing the improvements).
1066 +
1067 + 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
1068 +   See readme.field+param.names in the doc folder.
1069 +
1070 + 3. IBX SQL Editors will now automatically add double quotes around column names when the database
1071 +   dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
1072 +
1073 + 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
1074 +
1075 + 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
1076 +   actions.
1077 +
1078 + 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
1079 +   thanks to Yuriy Kopnin for pointing this out).
1080 +
1081 + 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
1082 +
1083 + 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
1084 +   for both fields and parameter setting.
1085 +
1086 + 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
1087 +   visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
1088 +
1089 + 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
1090 +    when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
1091 +
1092 + 11. TIBTable now has a property editor for "MasterFields"
1093 +
1094 + 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
1095 +    GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
1096 +
1097 + 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
1098 +    of settings is unrecognised. Selecting this radio button has no effect on the settings.
1099 +  
1100 +
1101   IBX Change Log  version                 (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
1102  
1103   1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.

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