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Revision: 62
Committed: Wed Apr 12 09:19:59 2017 UTC (6 years, 11 months ago) by tony
File size: 34903 byte(s)
Log Message:
Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true

File Contents

# Content
1 IBX Change Log version (2.0.3) tba, 24 Feb 2017 12:17:53 +0000
2
3 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
4 changes.
5
6 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
7 Bug could result in truncated multi-byte character set values.
8
9 3. Changes consequential on moving fbintf character set utility functions from
10 IFirebirdAPI to IAttachment.
11
12 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
13
14 IBX Change Log version (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
15
16 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
17 include remote system name.
18
19 2. TIBExtract: No longer include comment header and COMMIT statement for empty
20 tables when data included in output.
21
22 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
23 and timing information to be written to stdout. This may be used to locate
24 performance bottlenecks.
25
26 4. SQLParser: only call "OnChanging" event handler when value is different.
27
28 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
29
30 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
31 that BindFields is called when the query is next activated. Avoids FieldName
32 not found error.
33
34 IBX Change Log version (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
35
36 1. TIBEvents: Fix uninitialised variable that could result in lost events.
37
38 2. TIBExtract: Added support for FB3 "USAGE" privilege.
39
40 3. TIBExtract: data formatted as Charset set "octets" is now output using
41 hexadecimal notation.
42
43 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
44 using a simple XML format.
45
46 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
47 grants to these objects.
48
49 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
50 dependency problems restoring complex databases.
51
52 7. TIBXScript: This component has been restructured to allow for the processing of
53 embedded XML in INSERT statements and to support interactive sources in addition
54 to non-interactive data sources such as files.
55
56 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
57
58 9. TIBXScript: ISQL compatiable Set statements are now supported:
59 SET SQL DIALECT
60 SET TERM
61 SET AUTODDL
62 SET BAIL
63 SET ECHO
64 SET COUNT
65 SET STATS
66 SET NAMES <character set>
67
68 10. IBVersion unit added to hold current IBX Version Number information.
69
70 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
71 and domain definitions.
72
73 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
74 fully supported.
75
76 13. TIBExtract: when a database dump includes data, the generator values are now also set.
77
78 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
79
80 IBX Change Log version (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
81
82 See also doc/IBX4LazarusGuide.pdf for important information on
83 upgrading to IBX2.
84
85 1. Size property of TIBStringField is now the width in characters of the field
86 and not the byte length. This applies only to multi-byte character sets such
87 as UTF8. The original approach aligned with TStringField. However, the TStringField
88 code is not recognised as a bug and hence this change to align the behaviour.
89 The TStringField change is expected in fpc 3.2.0.
90
91 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
92 true (default) then Size property value saved in the lfm is ignored. Size is
93 always set from the dynamic information read from the database. It is unclear
94 why anyone would want to override this and set Size to false.
95
96 3. ibxscript: should now handle correctly a Case..End statement within a procedure
97 block.
98
99 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
100 exist when an attempt is made to connect to it (run time only) then an attempt
101 is made to create the database.
102
103 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
104 has been successfully created as a result of a call to CreateDatabase or when
105 creating a database after it was found not to exist.
106
107 6. DBControlGrid: a race condition could result in the wrong row image being
108 written to the cache. This has been avoided by a trip round the message
109 loop before rendering the row image.
110
111 7. DBControlGrid: It is strongly recommended not to open the source DataSet for
112 a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
113 known to risk corrupt rendering of row images when the control is first
114 displayed. If necessary use "Application.QueueAsyncCall" to delay opening
115 of the dataset (see DBControlGrid examples) until the Form's Window has been created.
116
117 8. DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
118 a TDateEdit control located on an editor panel.
119
120 9. TIBExtract: brought up-to-date plus many bug fixes.
121
122 10. DBControlGrid: Removed memory leak when updating rows.
123
124 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
125
126 IBX Change Log version (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
127
128 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
129 when target codepage is CP_NONE. This is a workaround for
130 http://bugs.freepascal.org/view.php?id=30622.
131
132 2. DBLog option removed from TIBStatisticalService - not supported by server
133 since Firebird 1.5.
134
135 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
136 similar.
137
138 4. IBCodePage: updated mapping between codepages and character id.
139
140 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
141 Firebird. Character sets with a char width of two are not UTF16.
142
143 6. Strings received from the database are now always transliterated into UTF8
144 regardless of the database character set or connection character set. This
145 is for compatibility with the LCL.
146
147 IBX Change Log version (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
148
149 1. IBBlob: Defer reading of blob until read method called. This avoids having to
150 read in an entire blob just to get the size of the blob. General performance
151 improvement when opening datasets containing blobs.
152
153 2. Clearing a Blob now sets the corresponding field's modified flag.
154
155 3. IBLookupCombo: When not performing auto-complete, original query sort order
156 is now used.
157
158 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
159 determined.
160
161 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
162
163 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
164 lazarus 1.6.0
165
166 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
167 compilation error.
168
169 IBX Change Log version (1.4-1) Tue, 17 May 2016 09:14:51 +0100
170
171 1. No character set specified for connection: when a text blob is retrieved, the
172 character set is determined by looking up the native character set using then
173 Firebird API. Otherwise a text mode blob is assumed to have the same character
174 set as the connection.
175
176 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
177 for Login Dialog returing a change to the database path.
178
179 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
180 to be changed from that given in the TIBDatabase/TIBServer component and for the
181 entered value to be saved on a project specific basis (design time only).
182
183 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
184 column fieldname. If they are the same then it is acts as a look up for the KeyValue
185 Otherwise, it sets the column text to the selected ListField Value.
186
187 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
188 column width.
189
190 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
191 and a case insensitive search is requested.
192
193 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
194 or column ListSource.
195
196 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
197 unprepare) when closing and the text has not changed.
198
199 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
200 Less likely to cause a cursor re-use error on Windows.
201
202 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
203 Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
204
205 11. TIBTreeView: Guard against nil destination on record changed
206
207 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
208 string type with the code page set to reflect the returned field encoding after
209 Firebird driver transliteration, if any. FPC 3.0.0 onwards only. Behaviour unchanged for
210 earlier versions.
211
212 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
213 will now result in transliteration to the code page specified for the Firebird driver
214 if the assigned string has a different code page. FPC 3.0.0 onwards only.
215
216 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
217 is ignored and the lc_ctype value, when the database is opened, is set to align with
218 the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
219 platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
220 3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
221 the GETACP is used to determine the Windows code page.
222
223 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
224 name used as the lc_ctype when the database was opened. Only valid while the
225 Database is connected.
226
227 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
228 id that corresponds to the DefaultCharSetName.
229
230 IBX Change Log version (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
231
232 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
233 path is given and database attach fails due to access permission issues on the
234 temp directory or security database, then the attach is retried with "localhost:"
235 prefixing the databasename. This should avoid problems when the database has to
236 be accessed by a local (e.g. classic) server and libfbembed is used.
237
238 2. Windows: revised search order for Firebird DLL:
239 i. The Firebird Embedded Server in the application Directory.
240 ii. If the FIREBIRD environment variable is set then the directory this
241 points to is searched for the FB Client DLL and then then underlying
242 "bin" directory.
243 iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
244 is used to locate the Firebird installation directory and the underlying
245 "bin" directory is searched for the FB Client DLL.
246 iv. The Default installation directories C:\Program Files\Firebird\Firebird_2_x
247 are searched for the FB Client DLL.
248 v. The PATH Environment variable is used to search for the FB Client DLL.
249 vi. Finally the PATH Environment variable is used to search for IBASE.DLL.
250
251 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
252 See doc/readme.scriptengine and example applications.
253
254 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
255 simplify the use of the embedded firebird server on both Linux and Windows platforms.
256 See dpc/readme.localdatabase and example applications.
257
258 5. IBDynamicGrid: Reordering on column header click should now also work for
259 dynamic columns.
260
261 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
262 between incrementing/decrementing the lock count and signalling the event.
263
264 IBX Change Log version (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
265
266 1.3.2 was never formally released and only made available as beta copies.
267
268 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
269
270 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
271
272 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
273
274 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
275 i.e. when it is a calculated field
276
277 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
278 This problem was due to a race condition between recalculating row heights and
279 determining which row was selected by the mouse click. The row height calculation
280 is now deferred by an extra trip round the message loop allowing the row to
281 be always calculated on the current grid layout rather than risking it being
282 calculated on the grid layout after the expanded row has been shrunk.
283
284 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
285 Windows.
286
287 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
288 These properties allow the (Firebird) character set name for the field and the max number of bytes per character
289 to be determined at runtime. See doc/readme.charactersets.html.
290
291 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
292 TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
293
294 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
295 TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
296 1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
297
298 Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
299 from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
300 implies no truncation.
301
302 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
303
304 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
305 (avoids "Not in Edit Mode" error).
306
307 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
308
309 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
310 DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
311
312 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
313
314 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
315
316 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
317
318 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
319
320 IBX Change Log version (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
321
322 1. OnCloseUp Event Handler added to TDBLookupProperties
323
324 2. IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
325 problem with row size when exception is called.
326
327 3. IBLookupComboEditBox: Force pending autocomplete on combobox exit.
328
329 4. IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
330 in a TCustomComboBox and ignores return key if in a TCustomMemo
331
332 5. IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
333 keyed in i.e. when autocomplete not performed
334
335 6. Cleanup of "Uses" clauses and add console mode support. IBX should now support
336 console mode applications with all LCL required functions (builtin dialogs and
337 cursor management) centralised in the IBDialogs unit. As long as "IBDialogs" is
338 not included in your project, IBX should compile and link with a console mode program.
339 See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
340 console mode application or the IDE will automatically assume that your
341 application is GUI based. Instead, you should include the ibexpressconsolemode package.
342
343 IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
344 to use the built in dialogs and cursor management. IBDialogs is
345 included by default if "ibexpress" is in your project source's "uses" clause.
346 This should be the case for all projects created through the IDE. This is why
347 you do not want to add the ibexpress package to console mode applications. The
348 ibexpressconsolemode package has been created to allow console mode programs
349 to avoid adding LCL dependencies when using IBX, while still having the
350 unit search paths set up correctly.
351
352 Existing users should check to ensure that the "ibexpress" unit is included in
353 each project's source file (*.lpr).
354
355 You may find that in order for the IDE to recognise that ibexpressconsolemode
356 exists, you have to first open the package in the IDE and then close it. This
357 adds it to the most recently accessed packages list. To make it permanently
358 available, add the package name to lazarus' staticpackages.inc file.
359
360 Thanks to Julio Jiménez for suggesting support of console mode.
361
362 7. SQL Parser can now accept quoted strings that include new lines
363
364 8. IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
365 of text on start of edit. This is particularly useful when tabbing to a
366 column and then inserting text.
367
368 9. New Examples provided for IB Services and ISQLMonitor.
369
370 10. Fix error when writing to blob streams that recorded only the last buffer
371 write in the blob stream. In most cases, this did not cause a problem as the
372 IB Blob Stream is written in a single write. However, with the TDBImage, write
373 of a graphic type prefix was lost which caused a problem when the image could
374 not be automatically recognised.
375
376 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
377 already open" errors due to random numbers used for the cursor name being identical.
378
379 12. IBTable: corrected error that could result in an "Index out of bounds" error
380 when opening the table and the Primary Key is the last or only column in the
381 table. Thanks to Rick Hoover for the fix.
382
383 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
384 of "UTF-8", and update list of available database character sets. Existing
385 users should check the current lc_ctype setting in their applications.
386
387 IBX Change Log version (1.2-4) Sat, 09 May 2015 12:38:29 +0100
388
389 1. Firebird Services: avoid List Index error when opening a service with an
390 empty Params property.
391
392 2. IBControls: Fix problem with new link mechanism introduced in 1.2.3.
393 Link now set up in Loaded method - avoids occasional failure to apply
394 SQL markup on initial open.
395
396 3. "Employees" example performance improvements when scrolling.
397
398 4. DBControlGrid: Correctly handle edit panel removal when panel is child control of a
399 TFrame. Force recaching of selected frame to avoid GTK race (results in a
400 random image cached).
401
402 5. DBControlGrid: Should now react to changes in panel height at run time.
403
404 6. IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid
405 even when further rows exist.
406
407 7. DBControlGrid: DefaultRowHeight is no longer a published property as it should
408 always be derived from panel height and setting this property can cause confusion.
409 Note for existing projects: to avoid a missing property error at run time,
410 each form using the DBControlGrid must be opened, updated and saved in the IDE
411 in order to remove the property value from the lfm.
412
413
414 IBX Change Log version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
415
416 1. TIBStoredProc. Prepare now called by ParamByName to avoid need to always
417 call Prepare before setting parameter values.
418
419 2. Error message on ParamByName (all cases) not found now includes name of missing parameter.
420
421 3. Code tidyup and more robust handling of dsql information result vector.
422
423 4. Support for centralised handling of transaction status changes. TIBTransaction
424 has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
425 and "AfterExecQuery". The first three are called after the same event is called
426 for an IBCustomDataSet descendent using the Transaction. The fourth is called
427 after a call to TIBSQL.ExecQuery, again using this transaction. These new events
428 enable monitoring of transaction status changes for a given transaction to be
429 handled in a single place. For example, when a change to the dataset occurs
430 an indicator can be set that shows the user that in order to save changes,
431 the transaction should be committed. Rather than doing this per dataset, this
432 can now be done per transaction.
433
434 5. TDataSet.CheckBrowseMode automatically posts changes to the current row when
435 the dataset is scrolled. However, any changes to the current row are, by default,
436 discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
437 have a new property "DataSetCloseAction" that adds automatic posting of changes
438 on dataset close. If this property is set to dcDiscardChanges (default) then the
439 behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
440 then IBX will attempt to post any unsaved changes before the dataset is closed
441 (and after the BeforeClose event handler is called). The exception is when the
442 dataset is being closed as a result of a transaction rollback. In this case,
443 no action is taken and any unsaved changes are discarded. This avoids both
444 unnecessary overhead and the risk that a validation error may occur in the Post
445 raising an exception and thereby preventing a rollback.
446
447 6. String Field sizes and Display Widths should now be correct for multi-byte character sets.
448 In earlier versions, the Display Width was set to the maximum byte width rather than the character
449 width. Display Widths are now corrected by dividing by the max byte width per character.
450 For UTF8 character sets, the byte width is four and hence the Display Width will be
451 the byte width divided by 4. The byte width of each character set is determined
452 dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
453 system table. (see also http://bugs.freepascal.org/view.php?id=27766).
454
455 7. SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
456
457 8. IBLookupComboEditBox: List should now always be restored to full list when the
458 control loses focus. Default Key press default interval reduced to 200ms.
459
460 9. DBControlGrid: Ensure that selection is changed to newly appended row, even
461 when dataset rows are less than visible rows.
462
463 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
464 does not exist or DataSet is empty. More responsive on dataset open. New event
465 OnRestorePosition. Column sort disabled if no header row.
466
467 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
468 while dataset state is dsInsert. Avoids posting errors.
469
470 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
471 avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
472
473 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
474
475 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
476 to solve a specific problem. That is when the dataset cursor is moved (e.g. by
477 a grid mouse click and the current row is being edited or inserted. In this case, TDataset
478 always "posts" the current record regardless or whether or not it may be more appropriate
479 to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
480 "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
481 as the first action of the "Post" method and allows the handler to convert the Post
482 into a Cancel if that is the appropriate action on moving to a different row. This is
483 achieved by returning with "CancelPost" argument set to true. Note that an exception could be
484 raised here, but it may still be more appropriate to validate a post and signal
485 a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
486
487 15. On Unix derived systems, the Firebird library name can now be given as a colon
488 separated list. Each library name on the list is tried in turn, in left to right
489 order with the first found being used as the firebird library. By default, on Linux,
490 the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
491 overidden by the FBLIB environment variable or the OnGetLibraryName function.
492
493 Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
494 then it will still attempt to access the database via the Firebird Server and will
495 require a username and password. If only the pathname is given, then the username
496 and password should be omitted and the unix file permissions are used to grant
497 access.
498
499 IBX Change Log version (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
500
501 1. A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
502 rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
503 that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
504 corresponds to a row of the linked DataSource. Any data aware control on the
505 replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
506
507 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
508 When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
509 takes place during database access. This may be useful when there are performance issues with
510 the change of cursor. Setting the property to false suppresses the change of cursor.
511
512 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
513 and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
514 Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
515 making all changes permanent immediately rather than when the transaction is explicitly
516 committed.
517
518 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
519 using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
520
521 IBX Change Log version (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
522
523 Development version only.
524
525 IBX Change Log version (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
526
527 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
528 This is typically used during an "OnBeforeOpen" event handler to manipulate the
529 "Where" and "Having" clauses to implement user specified filters of arbitrary
530 complexity.
531
532 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
533 three new data aware controls dependent on IBX and which make use of the SQL Parser.
534 These are:
535
536 - TIBLookupComboEditBox
537 - TIBDynamicGrid
538 - TIBTreeview
539
540 TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
541 of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
542 to revise the available list and restrict it to items that are prefixed by the
543 typed text (either case sensitive or case insensitive). Autoinsert allows a
544 newly typed entry to be added to the list dataset and included in the available
545 list items.
546
547 TIBDynamicGrid is a TDBGrid descendent that provides for:
548 - automatic resizing of selected columns to fill the available row length
549 - automatic positioning and sizing of a "totals" control, typically at the
550 column footer, on a per column basis.
551 - DataSet resorting on header row click, sorting the dataset by the selected column.
552 A second click on the same header cell reversed the sort order.
553 - Support for a "Panel Editor". That is on clicking the indicator column, the row
554 is automatically expanded and a panel superimposed on it. The panel can have any
555 number of child controls, typically data aware controls with the same datasource
556 as the grid allowing for editing of additional fields and more complex editors.
557 - Reselection of the same row following resorting.
558 - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
559 Its properties are specified on a per column basis and allows for one or more
560 columns to have their values selected from a list provided by a dataset.
561 Autocomplete and autoinsert are also available. The existing picklist editor
562 is unaffected by the extension.
563
564 TIBTreeView is a data aware TCustomTreeView.
565
566 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
567 zero scale will no longer return an error. An Int64 will be returned instead.
568
569 4. TIBTransaction now has events for Before and After Transaction End and a new function
570 "GetEndAction" allowing the EndAction to be accessed by these event handlers.
571
572 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
573 repeated multiple times.
574
575 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
576 check used to get in the way of using Stored Procedures, and "Update or Insert"
577 statements.
578
579 7. Insert, Modify and Delete property Editors now support Query Generation from
580 Stored Procedures.
581
582 8. Three new examples illustrate the use of the new IB Controls
583
584
585 IBX Change Log version (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
586
587 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
588 setting performance. See "readme.field+param.names in the doc folder.(Thanks to
589 Gabor Boros for reporting this problem and for testing the improvements).
590
591 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
592 See readme.field+param.names in the doc folder.
593
594 3. IBX SQL Editors will now automatically add double quotes around column names when the database
595 dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
596
597 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
598
599 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
600 actions.
601
602 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
603 thanks to Yuriy Kopnin for pointing this out).
604
605 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
606
607 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
608 for both fields and parameter setting.
609
610 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
611 visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
612
613 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
614 when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
615
616 11. TIBTable now has a property editor for "MasterFields"
617
618 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
619 GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
620
621 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
622 of settings is unrecognised. Selecting this radio button has no effect on the settings.
623
624
625 IBX Change Log version (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
626
627 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
628
629 IBX Change Log version (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
630
631 1. In a TIBCustomDataset descendent, a generator now only sets the value when
632 it is null. This allows for alternative user defined setting of the generator
633
634 Many thanks to Julio Jiménez for this fix
635
636 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
637 and suggests that the user may have forgotten to install it.
638
639 IBX Change Log version (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
640
641 1. Conditional compilation used to limit registration of TIntegerField to
642 Lazarus versions less than 1.1
643
644 2. When a database connection is created, character set is now by default set
645 to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
646 1250 to 1254.
647
648
649 IBX Change Log version (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
650
651 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
652
653
654 IBX Change Log version (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
655
656 1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
657 Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1
658
659 2. IBX now registers TIntegerField as a "No Icon" component. This may be removed if the fpc DB
660 package is changed to do this (which it should do).
661
662 IBX Change Log version (1.0-0) Sat, 28 Apr 2012 16:43:00 +0100
663
664 1. Add "if active then active := false" to TIBCustomDataset destructor. (Avoid error on database close).
665
666 2. Make use of $STATIC conditional in IBSQLMonitor (Needed for FPC 2.6.0 compliance)
667
668 3. Database Property Editor: Character Set drop down box now uses "OnChange" rather than "OnCloseUp" to react to changes
669
670 4. Property editors should now correctly resize.
671
672 5. In IBDatabaseEdit.TestClick, the LoginPrompt is now set to the state of the LoginPrompt Checkbox
673 (restored original functionality)
674
675 6. Under OSX, if IBX fails to load libfbclient.dylib, it will now try and load the firebird
676 library using the absolute path /Library/Frameworks/Firebird.framework/Firebird.