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Revision: 104
Committed: Thu Jan 18 14:37:29 2018 UTC (6 years, 2 months ago) by tony
File size: 39037 byte(s)
Log Message:
Documentation Updates

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# Content
1 IBX Change Log version (2.1-1) Sun, 07 Jan 2018 15:15:13 +0000
2
3 1. IBExtract: Identity columns - add addition check for null column for generator name.
4
5 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
6 The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
7 information). Values returned as a result of executing an Insert or Update statement
8 replace existing values in the current row for each corresponding column.
9
10 3. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
11 When InsertSQL is generated, the Identity columns are not included in the list of values to
12 be inserted. A RETURNING clause is added to the insert statement to return the value of
13 each Identity column after the insert is executed.
14
15 4. TIBGenerator: small performance improvement by not preparing query each time
16 a new number is generated.
17
18 5. TIBSQL: Free resources when transaction changed.
19
20 IBX Change Log version (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
21
22 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
23 changes.
24
25 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
26 Bug could result in truncated multi-byte character set values.
27
28 3. Changes consequential on moving fbintf character set utility functions from
29 IFirebirdAPI to IAttachment.
30
31 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
32
33 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
34 results in autocomplete ignoring prefix text.
35
36 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
37 entering a new name into the text box.
38
39 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
40 Firebird rather than recomputing it.
41
42 8. Property Editor positioning tidy up: All IBX Property editors should now be
43 screen centre. Previously some were "poDesigned" which may be inappropriate
44 for multi monitor desktops.
45
46 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
47
48 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
49 a transaction and always reset the object.
50
51 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
52
53 13. TIBXScript: Allow for override of database filename in Create Database statements.
54
55 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
56 to a gbak format archive.
57
58 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
59
60 16. IBLocaldb: Drop database if error creating an empty database.
61
62 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
63 unless selected node not in current dataset.
64
65 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
66 to TIBCustomService, and IBlocalDB code tidy up.
67
68 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
69 behaviour due to uninitialised variable.
70
71 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
72 integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
73
74 21. IBSQL: When Database changed ensure that all resources are freed.
75
76 22. IBCustomDataset: When database changed ensure that queries an unprepared.
77
78 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
79 * Line Wrap on SQL Token boundaries (on user command)
80 * auto-complete table names in drop down list of table names
81 * Double click on tablename or field name adds to SQL text
82
83 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
84
85 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
86 TVariantArray. Seems to avoid memory corruption in Windows (probably a
87 workaround for a problem in fpc 3.0.4 win64).
88
89 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
90
91 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
92
93 IBX Change Log version (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
94
95 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
96 include remote system name.
97
98 2. TIBExtract: No longer include comment header and COMMIT statement for empty
99 tables when data included in output.
100
101 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
102 and timing information to be written to stdout. This may be used to locate
103 performance bottlenecks.
104
105 4. SQLParser: only call "OnChanging" event handler when value is different.
106
107 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
108
109 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
110 that BindFields is called when the query is next activated. Avoids FieldName
111 not found error.
112
113 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
114 purpose and allows the programmer to define any action they want for Update, Insert
115 or Delete. This may be complex SQL (similar to a Trigger), application specific
116 filtering of updates, or use of statements such as Grant or Revoke instead of
117 normal DML. See User Manual for more information.
118
119 IBX Change Log version (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
120
121 1. TIBEvents: Fix uninitialised variable that could result in lost events.
122
123 2. TIBExtract: Added support for FB3 "USAGE" privilege.
124
125 3. TIBExtract: data formatted as Charset set "octets" is now output using
126 hexadecimal notation.
127
128 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
129 using a simple XML format.
130
131 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
132 grants to these objects.
133
134 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
135 dependency problems restoring complex databases.
136
137 7. TIBXScript: This component has been restructured to allow for the processing of
138 embedded XML in INSERT statements and to support interactive sources in addition
139 to non-interactive data sources such as files.
140
141 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
142
143 9. TIBXScript: ISQL compatiable Set statements are now supported:
144 SET SQL DIALECT
145 SET TERM
146 SET AUTODDL
147 SET BAIL
148 SET ECHO
149 SET COUNT
150 SET STATS
151 SET NAMES <character set>
152
153 10. IBVersion unit added to hold current IBX Version Number information.
154
155 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
156 and domain definitions.
157
158 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
159 fully supported.
160
161 13. TIBExtract: when a database dump includes data, the generator values are now also set.
162
163 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
164
165 IBX Change Log version (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
166
167 See also doc/IBX4LazarusGuide.pdf for important information on
168 upgrading to IBX2.
169
170 1. Size property of TIBStringField is now the width in characters of the field
171 and not the byte length. This applies only to multi-byte character sets such
172 as UTF8. The original approach aligned with TStringField. However, the TStringField
173 code is not recognised as a bug and hence this change to align the behaviour.
174 The TStringField change is expected in fpc 3.2.0.
175
176 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
177 true (default) then Size property value saved in the lfm is ignored. Size is
178 always set from the dynamic information read from the database. It is unclear
179 why anyone would want to override this and set Size to false.
180
181 3. ibxscript: should now handle correctly a Case..End statement within a procedure
182 block.
183
184 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
185 exist when an attempt is made to connect to it (run time only) then an attempt
186 is made to create the database.
187
188 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
189 has been successfully created as a result of a call to CreateDatabase or when
190 creating a database after it was found not to exist.
191
192 6. DBControlGrid: a race condition could result in the wrong row image being
193 written to the cache. This has been avoided by a trip round the message
194 loop before rendering the row image.
195
196 7. DBControlGrid: It is strongly recommended not to open the source DataSet for
197 a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
198 known to risk corrupt rendering of row images when the control is first
199 displayed. If necessary use "Application.QueueAsyncCall" to delay opening
200 of the dataset (see DBControlGrid examples) until the Form's Window has been created.
201
202 8. DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
203 a TDateEdit control located on an editor panel.
204
205 9. TIBExtract: brought up-to-date plus many bug fixes.
206
207 10. DBControlGrid: Removed memory leak when updating rows.
208
209 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
210
211 IBX Change Log version (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
212
213 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
214 when target codepage is CP_NONE. This is a workaround for
215 http://bugs.freepascal.org/view.php?id=30622.
216
217 2. DBLog option removed from TIBStatisticalService - not supported by server
218 since Firebird 1.5.
219
220 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
221 similar.
222
223 4. IBCodePage: updated mapping between codepages and character id.
224
225 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
226 Firebird. Character sets with a char width of two are not UTF16.
227
228 6. Strings received from the database are now always transliterated into UTF8
229 regardless of the database character set or connection character set. This
230 is for compatibility with the LCL.
231
232 IBX Change Log version (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
233
234 1. IBBlob: Defer reading of blob until read method called. This avoids having to
235 read in an entire blob just to get the size of the blob. General performance
236 improvement when opening datasets containing blobs.
237
238 2. Clearing a Blob now sets the corresponding field's modified flag.
239
240 3. IBLookupCombo: When not performing auto-complete, original query sort order
241 is now used.
242
243 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
244 determined.
245
246 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
247
248 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
249 lazarus 1.6.0
250
251 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
252 compilation error.
253
254 IBX Change Log version (1.4-1) Tue, 17 May 2016 09:14:51 +0100
255
256 1. No character set specified for connection: when a text blob is retrieved, the
257 character set is determined by looking up the native character set using then
258 Firebird API. Otherwise a text mode blob is assumed to have the same character
259 set as the connection.
260
261 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
262 for Login Dialog returing a change to the database path.
263
264 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
265 to be changed from that given in the TIBDatabase/TIBServer component and for the
266 entered value to be saved on a project specific basis (design time only).
267
268 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
269 column fieldname. If they are the same then it is acts as a look up for the KeyValue
270 Otherwise, it sets the column text to the selected ListField Value.
271
272 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
273 column width.
274
275 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
276 and a case insensitive search is requested.
277
278 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
279 or column ListSource.
280
281 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
282 unprepare) when closing and the text has not changed.
283
284 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
285 Less likely to cause a cursor re-use error on Windows.
286
287 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
288 Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
289
290 11. TIBTreeView: Guard against nil destination on record changed
291
292 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
293 string type with the code page set to reflect the returned field encoding after
294 Firebird driver transliteration, if any. FPC 3.0.0 onwards only. Behaviour unchanged for
295 earlier versions.
296
297 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
298 will now result in transliteration to the code page specified for the Firebird driver
299 if the assigned string has a different code page. FPC 3.0.0 onwards only.
300
301 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
302 is ignored and the lc_ctype value, when the database is opened, is set to align with
303 the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
304 platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
305 3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
306 the GETACP is used to determine the Windows code page.
307
308 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
309 name used as the lc_ctype when the database was opened. Only valid while the
310 Database is connected.
311
312 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
313 id that corresponds to the DefaultCharSetName.
314
315 IBX Change Log version (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
316
317 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
318 path is given and database attach fails due to access permission issues on the
319 temp directory or security database, then the attach is retried with "localhost:"
320 prefixing the databasename. This should avoid problems when the database has to
321 be accessed by a local (e.g. classic) server and libfbembed is used.
322
323 2. Windows: revised search order for Firebird DLL:
324 i. The Firebird Embedded Server in the application Directory.
325 ii. If the FIREBIRD environment variable is set then the directory this
326 points to is searched for the FB Client DLL and then then underlying
327 "bin" directory.
328 iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
329 is used to locate the Firebird installation directory and the underlying
330 "bin" directory is searched for the FB Client DLL.
331 iv. The Default installation directories C:\Program Files\Firebird\Firebird_2_x
332 are searched for the FB Client DLL.
333 v. The PATH Environment variable is used to search for the FB Client DLL.
334 vi. Finally the PATH Environment variable is used to search for IBASE.DLL.
335
336 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
337 See doc/readme.scriptengine and example applications.
338
339 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
340 simplify the use of the embedded firebird server on both Linux and Windows platforms.
341 See dpc/readme.localdatabase and example applications.
342
343 5. IBDynamicGrid: Reordering on column header click should now also work for
344 dynamic columns.
345
346 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
347 between incrementing/decrementing the lock count and signalling the event.
348
349 IBX Change Log version (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
350
351 1.3.2 was never formally released and only made available as beta copies.
352
353 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
354
355 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
356
357 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
358
359 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
360 i.e. when it is a calculated field
361
362 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
363 This problem was due to a race condition between recalculating row heights and
364 determining which row was selected by the mouse click. The row height calculation
365 is now deferred by an extra trip round the message loop allowing the row to
366 be always calculated on the current grid layout rather than risking it being
367 calculated on the grid layout after the expanded row has been shrunk.
368
369 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
370 Windows.
371
372 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
373 These properties allow the (Firebird) character set name for the field and the max number of bytes per character
374 to be determined at runtime. See doc/readme.charactersets.html.
375
376 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
377 TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
378
379 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
380 TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
381 1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
382
383 Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
384 from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
385 implies no truncation.
386
387 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
388
389 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
390 (avoids "Not in Edit Mode" error).
391
392 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
393
394 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
395 DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
396
397 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
398
399 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
400
401 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
402
403 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
404
405 IBX Change Log version (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
406
407 1. OnCloseUp Event Handler added to TDBLookupProperties
408
409 2. IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
410 problem with row size when exception is called.
411
412 3. IBLookupComboEditBox: Force pending autocomplete on combobox exit.
413
414 4. IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
415 in a TCustomComboBox and ignores return key if in a TCustomMemo
416
417 5. IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
418 keyed in i.e. when autocomplete not performed
419
420 6. Cleanup of "Uses" clauses and add console mode support. IBX should now support
421 console mode applications with all LCL required functions (builtin dialogs and
422 cursor management) centralised in the IBDialogs unit. As long as "IBDialogs" is
423 not included in your project, IBX should compile and link with a console mode program.
424 See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
425 console mode application or the IDE will automatically assume that your
426 application is GUI based. Instead, you should include the ibexpressconsolemode package.
427
428 IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
429 to use the built in dialogs and cursor management. IBDialogs is
430 included by default if "ibexpress" is in your project source's "uses" clause.
431 This should be the case for all projects created through the IDE. This is why
432 you do not want to add the ibexpress package to console mode applications. The
433 ibexpressconsolemode package has been created to allow console mode programs
434 to avoid adding LCL dependencies when using IBX, while still having the
435 unit search paths set up correctly.
436
437 Existing users should check to ensure that the "ibexpress" unit is included in
438 each project's source file (*.lpr).
439
440 You may find that in order for the IDE to recognise that ibexpressconsolemode
441 exists, you have to first open the package in the IDE and then close it. This
442 adds it to the most recently accessed packages list. To make it permanently
443 available, add the package name to lazarus' staticpackages.inc file.
444
445 Thanks to Julio Jiménez for suggesting support of console mode.
446
447 7. SQL Parser can now accept quoted strings that include new lines
448
449 8. IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
450 of text on start of edit. This is particularly useful when tabbing to a
451 column and then inserting text.
452
453 9. New Examples provided for IB Services and ISQLMonitor.
454
455 10. Fix error when writing to blob streams that recorded only the last buffer
456 write in the blob stream. In most cases, this did not cause a problem as the
457 IB Blob Stream is written in a single write. However, with the TDBImage, write
458 of a graphic type prefix was lost which caused a problem when the image could
459 not be automatically recognised.
460
461 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
462 already open" errors due to random numbers used for the cursor name being identical.
463
464 12. IBTable: corrected error that could result in an "Index out of bounds" error
465 when opening the table and the Primary Key is the last or only column in the
466 table. Thanks to Rick Hoover for the fix.
467
468 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
469 of "UTF-8", and update list of available database character sets. Existing
470 users should check the current lc_ctype setting in their applications.
471
472 IBX Change Log version (1.2-4) Sat, 09 May 2015 12:38:29 +0100
473
474 1. Firebird Services: avoid List Index error when opening a service with an
475 empty Params property.
476
477 2. IBControls: Fix problem with new link mechanism introduced in 1.2.3.
478 Link now set up in Loaded method - avoids occasional failure to apply
479 SQL markup on initial open.
480
481 3. "Employees" example performance improvements when scrolling.
482
483 4. DBControlGrid: Correctly handle edit panel removal when panel is child control of a
484 TFrame. Force recaching of selected frame to avoid GTK race (results in a
485 random image cached).
486
487 5. DBControlGrid: Should now react to changes in panel height at run time.
488
489 6. IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid
490 even when further rows exist.
491
492 7. DBControlGrid: DefaultRowHeight is no longer a published property as it should
493 always be derived from panel height and setting this property can cause confusion.
494 Note for existing projects: to avoid a missing property error at run time,
495 each form using the DBControlGrid must be opened, updated and saved in the IDE
496 in order to remove the property value from the lfm.
497
498
499 IBX Change Log version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
500
501 1. TIBStoredProc. Prepare now called by ParamByName to avoid need to always
502 call Prepare before setting parameter values.
503
504 2. Error message on ParamByName (all cases) not found now includes name of missing parameter.
505
506 3. Code tidyup and more robust handling of dsql information result vector.
507
508 4. Support for centralised handling of transaction status changes. TIBTransaction
509 has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
510 and "AfterExecQuery". The first three are called after the same event is called
511 for an IBCustomDataSet descendent using the Transaction. The fourth is called
512 after a call to TIBSQL.ExecQuery, again using this transaction. These new events
513 enable monitoring of transaction status changes for a given transaction to be
514 handled in a single place. For example, when a change to the dataset occurs
515 an indicator can be set that shows the user that in order to save changes,
516 the transaction should be committed. Rather than doing this per dataset, this
517 can now be done per transaction.
518
519 5. TDataSet.CheckBrowseMode automatically posts changes to the current row when
520 the dataset is scrolled. However, any changes to the current row are, by default,
521 discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
522 have a new property "DataSetCloseAction" that adds automatic posting of changes
523 on dataset close. If this property is set to dcDiscardChanges (default) then the
524 behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
525 then IBX will attempt to post any unsaved changes before the dataset is closed
526 (and after the BeforeClose event handler is called). The exception is when the
527 dataset is being closed as a result of a transaction rollback. In this case,
528 no action is taken and any unsaved changes are discarded. This avoids both
529 unnecessary overhead and the risk that a validation error may occur in the Post
530 raising an exception and thereby preventing a rollback.
531
532 6. String Field sizes and Display Widths should now be correct for multi-byte character sets.
533 In earlier versions, the Display Width was set to the maximum byte width rather than the character
534 width. Display Widths are now corrected by dividing by the max byte width per character.
535 For UTF8 character sets, the byte width is four and hence the Display Width will be
536 the byte width divided by 4. The byte width of each character set is determined
537 dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
538 system table. (see also http://bugs.freepascal.org/view.php?id=27766).
539
540 7. SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
541
542 8. IBLookupComboEditBox: List should now always be restored to full list when the
543 control loses focus. Default Key press default interval reduced to 200ms.
544
545 9. DBControlGrid: Ensure that selection is changed to newly appended row, even
546 when dataset rows are less than visible rows.
547
548 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
549 does not exist or DataSet is empty. More responsive on dataset open. New event
550 OnRestorePosition. Column sort disabled if no header row.
551
552 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
553 while dataset state is dsInsert. Avoids posting errors.
554
555 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
556 avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
557
558 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
559
560 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
561 to solve a specific problem. That is when the dataset cursor is moved (e.g. by
562 a grid mouse click and the current row is being edited or inserted. In this case, TDataset
563 always "posts" the current record regardless or whether or not it may be more appropriate
564 to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
565 "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
566 as the first action of the "Post" method and allows the handler to convert the Post
567 into a Cancel if that is the appropriate action on moving to a different row. This is
568 achieved by returning with "CancelPost" argument set to true. Note that an exception could be
569 raised here, but it may still be more appropriate to validate a post and signal
570 a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
571
572 15. On Unix derived systems, the Firebird library name can now be given as a colon
573 separated list. Each library name on the list is tried in turn, in left to right
574 order with the first found being used as the firebird library. By default, on Linux,
575 the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
576 overidden by the FBLIB environment variable or the OnGetLibraryName function.
577
578 Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
579 then it will still attempt to access the database via the Firebird Server and will
580 require a username and password. If only the pathname is given, then the username
581 and password should be omitted and the unix file permissions are used to grant
582 access.
583
584 IBX Change Log version (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
585
586 1. A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
587 rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
588 that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
589 corresponds to a row of the linked DataSource. Any data aware control on the
590 replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
591
592 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
593 When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
594 takes place during database access. This may be useful when there are performance issues with
595 the change of cursor. Setting the property to false suppresses the change of cursor.
596
597 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
598 and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
599 Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
600 making all changes permanent immediately rather than when the transaction is explicitly
601 committed.
602
603 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
604 using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
605
606 IBX Change Log version (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
607
608 Development version only.
609
610 IBX Change Log version (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
611
612 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
613 This is typically used during an "OnBeforeOpen" event handler to manipulate the
614 "Where" and "Having" clauses to implement user specified filters of arbitrary
615 complexity.
616
617 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
618 three new data aware controls dependent on IBX and which make use of the SQL Parser.
619 These are:
620
621 - TIBLookupComboEditBox
622 - TIBDynamicGrid
623 - TIBTreeview
624
625 TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
626 of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
627 to revise the available list and restrict it to items that are prefixed by the
628 typed text (either case sensitive or case insensitive). Autoinsert allows a
629 newly typed entry to be added to the list dataset and included in the available
630 list items.
631
632 TIBDynamicGrid is a TDBGrid descendent that provides for:
633 - automatic resizing of selected columns to fill the available row length
634 - automatic positioning and sizing of a "totals" control, typically at the
635 column footer, on a per column basis.
636 - DataSet resorting on header row click, sorting the dataset by the selected column.
637 A second click on the same header cell reversed the sort order.
638 - Support for a "Panel Editor". That is on clicking the indicator column, the row
639 is automatically expanded and a panel superimposed on it. The panel can have any
640 number of child controls, typically data aware controls with the same datasource
641 as the grid allowing for editing of additional fields and more complex editors.
642 - Reselection of the same row following resorting.
643 - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
644 Its properties are specified on a per column basis and allows for one or more
645 columns to have their values selected from a list provided by a dataset.
646 Autocomplete and autoinsert are also available. The existing picklist editor
647 is unaffected by the extension.
648
649 TIBTreeView is a data aware TCustomTreeView.
650
651 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
652 zero scale will no longer return an error. An Int64 will be returned instead.
653
654 4. TIBTransaction now has events for Before and After Transaction End and a new function
655 "GetEndAction" allowing the EndAction to be accessed by these event handlers.
656
657 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
658 repeated multiple times.
659
660 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
661 check used to get in the way of using Stored Procedures, and "Update or Insert"
662 statements.
663
664 7. Insert, Modify and Delete property Editors now support Query Generation from
665 Stored Procedures.
666
667 8. Three new examples illustrate the use of the new IB Controls
668
669
670 IBX Change Log version (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
671
672 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
673 setting performance. See "readme.field+param.names in the doc folder.(Thanks to
674 Gabor Boros for reporting this problem and for testing the improvements).
675
676 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
677 See readme.field+param.names in the doc folder.
678
679 3. IBX SQL Editors will now automatically add double quotes around column names when the database
680 dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
681
682 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
683
684 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
685 actions.
686
687 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
688 thanks to Yuriy Kopnin for pointing this out).
689
690 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
691
692 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
693 for both fields and parameter setting.
694
695 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
696 visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
697
698 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
699 when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
700
701 11. TIBTable now has a property editor for "MasterFields"
702
703 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
704 GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
705
706 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
707 of settings is unrecognised. Selecting this radio button has no effect on the settings.
708
709
710 IBX Change Log version (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
711
712 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
713
714 IBX Change Log version (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
715
716 1. In a TIBCustomDataset descendent, a generator now only sets the value when
717 it is null. This allows for alternative user defined setting of the generator
718
719 Many thanks to Julio Jiménez for this fix
720
721 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
722 and suggests that the user may have forgotten to install it.
723
724 IBX Change Log version (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
725
726 1. Conditional compilation used to limit registration of TIntegerField to
727 Lazarus versions less than 1.1
728
729 2. When a database connection is created, character set is now by default set
730 to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
731 1250 to 1254.
732
733
734 IBX Change Log version (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
735
736 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
737
738
739 IBX Change Log version (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
740
741 1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
742 Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1
743
744 2. IBX now registers TIntegerField as a "No Icon" component. This may be removed if the fpc DB
745 package is changed to do this (which it should do).
746
747 IBX Change Log version (1.0-0) Sat, 28 Apr 2012 16:43:00 +0100
748
749 1. Add "if active then active := false" to TIBCustomDataset destructor. (Avoid error on database close).
750
751 2. Make use of $STATIC conditional in IBSQLMonitor (Needed for FPC 2.6.0 compliance)
752
753 3. Database Property Editor: Character Set drop down box now uses "OnChange" rather than "OnCloseUp" to react to changes
754
755 4. Property editors should now correctly resize.
756
757 5. In IBDatabaseEdit.TestClick, the LoginPrompt is now set to the state of the LoginPrompt Checkbox
758 (restored original functionality)
759
760 6. Under OSX, if IBX fails to load libfbclient.dylib, it will now try and load the firebird
761 library using the absolute path /Library/Frameworks/Firebird.framework/Firebird.