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Revision: 127
Committed: Mon Jan 22 16:21:34 2018 UTC (4 weeks, 2 days ago) by tony
File size: 43100 byte(s)
Log Message:
Add property Editor for TIBUpdate.RefreshSQL
Line File contents
1 IBX Change Log version (2.2-0) Mon, 22 Jan 2018 14:21:12 +0000
2
3 1. IBExtract: Identity columns - add additional 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). However, this is also a very useful mechanism for returning updated computed by
8 column values. Values returned as a result of executing an Insert or Update statement
9 replace existing values in the current row for each corresponding column.
10
11 Previously, if a dataset's select query included read only (computed by) fields then
12 an automatic row refresh was performed after an insert or update query had been processed,
13 irrespective of the setting of the "ForcedUpdates" property. This has changed such
14 that an automatic refresh is no longer performed if an insert or update query contains
15 a returning clause that updates one or more fields on the current row. A full row
16 refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
17 field values and the select query contains read only fields. Use of Insert/update
18 returning should be significantly more efficient than executing a refresh query.
19
20 This behaviour change is intended to be backwards compatible and there should be no need to change
21 existing programs, other than to improve performance by using the new capability.
22
23 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
24 they are called when the dataset row is being deleted, there is no value in
25 updating the current record from the query result. Instead, a new event handler
26 "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
27 an OnDeleteReturning event handler is provided then it is called with the IResults returned
28 by the query. The event handler can then interrogate the query results and
29 perform whatever action is necessary. For example to confirm, to the user,
30 the deletion of a row with the returned values.
31
32 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
33 any Computed By or Identity Columns. The IBTables example has been updated to
34 illustrate the computation of the employee Full Name on update.
35
36 5. TIBTable: The GeneratorField property is now published.
37
38 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
39 When InsertSQL is generated, the Identity columns are not included in the list of values to
40 be inserted. A RETURNING clause is added to the insert statement to return the value of
41 each Identity column after the insert is executed.
42
43 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
44 Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
45 Insert..Returning clause.
46
47 8. TIBGenerator: small performance improvement by not preparing query each time
48 a new value is generated.
49
50 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
51
52 10. Property editors will now sync table name to a System Table when "Include System
53 Tables" is selected and the query is for a System Table.
54
55 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
56 values are no longer converted to milliseconds from TDateTime and then back again
57 to TDateTime (the conversion to milliseconds is the default TDataset approach).
58
59 12. Property Editors handling of Stored Procedures.
60 * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
61 which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
62 query).
63 * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
64
65 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
66 can be used to select a package. If non-empty, the stored procedure name is
67 expected to be a stored procedure defined in the specified package and the
68 generated SQL will be as required for a stored procedure located in a package.
69
70 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
71 a "Package Name" drop down box to allow selection of a Firebird 3 Package from
72 which a stored procedure can be selected. With no package name selected, non-package
73 stored procedures are listed.
74
75 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
76 for password on reconnect.
77
78 16. IBDatabase: use IAttachment for connection default character set id, code page
79 and character set name.
80
81 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
82 DB info lookups"
83
84 18. IBExtract: now supports DDL Triggers.
85
86 19. Add a property Editor for TIBUpdate.RefreshSQL.
87
88
89 IBX Change Log version (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
90
91 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
92 changes.
93
94 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
95 Bug could result in truncated multi-byte character set values.
96
97 3. Changes consequential on moving fbintf character set utility functions from
98 IFirebirdAPI to IAttachment.
99
100 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
101
102 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
103 results in autocomplete ignoring prefix text.
104
105 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
106 entering a new name into the text box.
107
108 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
109 Firebird rather than recomputing it.
110
111 8. Property Editor positioning tidy up: All IBX Property editors should now be
112 screen centre. Previously some were "poDesigned" which may be inappropriate
113 for multi monitor desktops.
114
115 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
116
117 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
118 a transaction and always reset the object.
119
120 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
121
122 13. TIBXScript: Allow for override of database filename in Create Database statements.
123
124 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
125 to a gbak format archive.
126
127 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
128
129 16. IBLocaldb: Drop database if error creating an empty database.
130
131 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
132 unless selected node not in current dataset.
133
134 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
135 to TIBCustomService, and IBlocalDB code tidy up.
136
137 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
138 behaviour due to uninitialised variable.
139
140 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
141 integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
142
143 21. IBSQL: When Database changed ensure that all resources are freed.
144
145 22. IBCustomDataset: When database changed ensure that queries an unprepared.
146
147 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
148 * Line Wrap on SQL Token boundaries (on user command)
149 * auto-complete table names in drop down list of table names
150 * Double click on tablename or field name adds to SQL text
151
152 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
153
154 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
155 TVariantArray. Seems to avoid memory corruption in Windows (probably a
156 workaround for a problem in fpc 3.0.4 win64).
157
158 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
159
160 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
161
162 IBX Change Log version (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
163
164 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
165 include remote system name.
166
167 2. TIBExtract: No longer include comment header and COMMIT statement for empty
168 tables when data included in output.
169
170 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
171 and timing information to be written to stdout. This may be used to locate
172 performance bottlenecks.
173
174 4. SQLParser: only call "OnChanging" event handler when value is different.
175
176 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
177
178 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
179 that BindFields is called when the query is next activated. Avoids FieldName
180 not found error.
181
182 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
183 purpose and allows the programmer to define any action they want for Update, Insert
184 or Delete. This may be complex SQL (similar to a Trigger), application specific
185 filtering of updates, or use of statements such as Grant or Revoke instead of
186 normal DML. See User Manual for more information.
187
188 IBX Change Log version (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
189
190 1. TIBEvents: Fix uninitialised variable that could result in lost events.
191
192 2. TIBExtract: Added support for FB3 "USAGE" privilege.
193
194 3. TIBExtract: data formatted as Charset set "octets" is now output using
195 hexadecimal notation.
196
197 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
198 using a simple XML format.
199
200 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
201 grants to these objects.
202
203 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
204 dependency problems restoring complex databases.
205
206 7. TIBXScript: This component has been restructured to allow for the processing of
207 embedded XML in INSERT statements and to support interactive sources in addition
208 to non-interactive data sources such as files.
209
210 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
211
212 9. TIBXScript: ISQL compatiable Set statements are now supported:
213 SET SQL DIALECT
214 SET TERM
215 SET AUTODDL
216 SET BAIL
217 SET ECHO
218 SET COUNT
219 SET STATS
220 SET NAMES <character set>
221
222 10. IBVersion unit added to hold current IBX Version Number information.
223
224 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
225 and domain definitions.
226
227 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
228 fully supported.
229
230 13. TIBExtract: when a database dump includes data, the generator values are now also set.
231
232 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
233
234 IBX Change Log version (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
235
236 See also doc/IBX4LazarusGuide.pdf for important information on
237 upgrading to IBX2.
238
239 1. Size property of TIBStringField is now the width in characters of the field
240 and not the byte length. This applies only to multi-byte character sets such
241 as UTF8. The original approach aligned with TStringField. However, the TStringField
242 code is not recognised as a bug and hence this change to align the behaviour.
243 The TStringField change is expected in fpc 3.2.0.
244
245 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
246 true (default) then Size property value saved in the lfm is ignored. Size is
247 always set from the dynamic information read from the database. It is unclear
248 why anyone would want to override this and set Size to false.
249
250 3. ibxscript: should now handle correctly a Case..End statement within a procedure
251 block.
252
253 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
254 exist when an attempt is made to connect to it (run time only) then an attempt
255 is made to create the database.
256
257 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
258 has been successfully created as a result of a call to CreateDatabase or when
259 creating a database after it was found not to exist.
260
261 6. DBControlGrid: a race condition could result in the wrong row image being
262 written to the cache. This has been avoided by a trip round the message
263 loop before rendering the row image.
264
265 7. DBControlGrid: It is strongly recommended not to open the source DataSet for
266 a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
267 known to risk corrupt rendering of row images when the control is first
268 displayed. If necessary use "Application.QueueAsyncCall" to delay opening
269 of the dataset (see DBControlGrid examples) until the Form's Window has been created.
270
271 8. DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
272 a TDateEdit control located on an editor panel.
273
274 9. TIBExtract: brought up-to-date plus many bug fixes.
275
276 10. DBControlGrid: Removed memory leak when updating rows.
277
278 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
279
280 IBX Change Log version (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
281
282 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
283 when target codepage is CP_NONE. This is a workaround for
284 http://bugs.freepascal.org/view.php?id=30622.
285
286 2. DBLog option removed from TIBStatisticalService - not supported by server
287 since Firebird 1.5.
288
289 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
290 similar.
291
292 4. IBCodePage: updated mapping between codepages and character id.
293
294 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
295 Firebird. Character sets with a char width of two are not UTF16.
296
297 6. Strings received from the database are now always transliterated into UTF8
298 regardless of the database character set or connection character set. This
299 is for compatibility with the LCL.
300
301 IBX Change Log version (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
302
303 1. IBBlob: Defer reading of blob until read method called. This avoids having to
304 read in an entire blob just to get the size of the blob. General performance
305 improvement when opening datasets containing blobs.
306
307 2. Clearing a Blob now sets the corresponding field's modified flag.
308
309 3. IBLookupCombo: When not performing auto-complete, original query sort order
310 is now used.
311
312 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
313 determined.
314
315 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
316
317 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
318 lazarus 1.6.0
319
320 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
321 compilation error.
322
323 IBX Change Log version (1.4-1) Tue, 17 May 2016 09:14:51 +0100
324
325 1. No character set specified for connection: when a text blob is retrieved, the
326 character set is determined by looking up the native character set using then
327 Firebird API. Otherwise a text mode blob is assumed to have the same character
328 set as the connection.
329
330 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
331 for Login Dialog returing a change to the database path.
332
333 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
334 to be changed from that given in the TIBDatabase/TIBServer component and for the
335 entered value to be saved on a project specific basis (design time only).
336
337 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
338 column fieldname. If they are the same then it is acts as a look up for the KeyValue
339 Otherwise, it sets the column text to the selected ListField Value.
340
341 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
342 column width.
343
344 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
345 and a case insensitive search is requested.
346
347 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
348 or column ListSource.
349
350 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
351 unprepare) when closing and the text has not changed.
352
353 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
354 Less likely to cause a cursor re-use error on Windows.
355
356 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
357 Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
358
359 11. TIBTreeView: Guard against nil destination on record changed
360
361 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
362 string type with the code page set to reflect the returned field encoding after
363 Firebird driver transliteration, if any. FPC 3.0.0 onwards only. Behaviour unchanged for
364 earlier versions.
365
366 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
367 will now result in transliteration to the code page specified for the Firebird driver
368 if the assigned string has a different code page. FPC 3.0.0 onwards only.
369
370 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
371 is ignored and the lc_ctype value, when the database is opened, is set to align with
372 the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
373 platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
374 3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
375 the GETACP is used to determine the Windows code page.
376
377 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
378 name used as the lc_ctype when the database was opened. Only valid while the
379 Database is connected.
380
381 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
382 id that corresponds to the DefaultCharSetName.
383
384 IBX Change Log version (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
385
386 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
387 path is given and database attach fails due to access permission issues on the
388 temp directory or security database, then the attach is retried with "localhost:"
389 prefixing the databasename. This should avoid problems when the database has to
390 be accessed by a local (e.g. classic) server and libfbembed is used.
391
392 2. Windows: revised search order for Firebird DLL:
393 i. The Firebird Embedded Server in the application Directory.
394 ii. If the FIREBIRD environment variable is set then the directory this
395 points to is searched for the FB Client DLL and then then underlying
396 "bin" directory.
397 iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
398 is used to locate the Firebird installation directory and the underlying
399 "bin" directory is searched for the FB Client DLL.
400 iv. The Default installation directories C:\Program Files\Firebird\Firebird_2_x
401 are searched for the FB Client DLL.
402 v. The PATH Environment variable is used to search for the FB Client DLL.
403 vi. Finally the PATH Environment variable is used to search for IBASE.DLL.
404
405 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
406 See doc/readme.scriptengine and example applications.
407
408 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
409 simplify the use of the embedded firebird server on both Linux and Windows platforms.
410 See dpc/readme.localdatabase and example applications.
411
412 5. IBDynamicGrid: Reordering on column header click should now also work for
413 dynamic columns.
414
415 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
416 between incrementing/decrementing the lock count and signalling the event.
417
418 IBX Change Log version (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
419
420 1.3.2 was never formally released and only made available as beta copies.
421
422 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
423
424 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
425
426 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
427
428 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
429 i.e. when it is a calculated field
430
431 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
432 This problem was due to a race condition between recalculating row heights and
433 determining which row was selected by the mouse click. The row height calculation
434 is now deferred by an extra trip round the message loop allowing the row to
435 be always calculated on the current grid layout rather than risking it being
436 calculated on the grid layout after the expanded row has been shrunk.
437
438 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
439 Windows.
440
441 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
442 These properties allow the (Firebird) character set name for the field and the max number of bytes per character
443 to be determined at runtime. See doc/readme.charactersets.html.
444
445 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
446 TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
447
448 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
449 TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
450 1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
451
452 Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
453 from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
454 implies no truncation.
455
456 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
457
458 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
459 (avoids "Not in Edit Mode" error).
460
461 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
462
463 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
464 DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
465
466 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
467
468 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
469
470 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
471
472 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
473
474 IBX Change Log version (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
475
476 1. OnCloseUp Event Handler added to TDBLookupProperties
477
478 2. IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
479 problem with row size when exception is called.
480
481 3. IBLookupComboEditBox: Force pending autocomplete on combobox exit.
482
483 4. IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
484 in a TCustomComboBox and ignores return key if in a TCustomMemo
485
486 5. IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
487 keyed in i.e. when autocomplete not performed
488
489 6. Cleanup of "Uses" clauses and add console mode support. IBX should now support
490 console mode applications with all LCL required functions (builtin dialogs and
491 cursor management) centralised in the IBDialogs unit. As long as "IBDialogs" is
492 not included in your project, IBX should compile and link with a console mode program.
493 See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
494 console mode application or the IDE will automatically assume that your
495 application is GUI based. Instead, you should include the ibexpressconsolemode package.
496
497 IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
498 to use the built in dialogs and cursor management. IBDialogs is
499 included by default if "ibexpress" is in your project source's "uses" clause.
500 This should be the case for all projects created through the IDE. This is why
501 you do not want to add the ibexpress package to console mode applications. The
502 ibexpressconsolemode package has been created to allow console mode programs
503 to avoid adding LCL dependencies when using IBX, while still having the
504 unit search paths set up correctly.
505
506 Existing users should check to ensure that the "ibexpress" unit is included in
507 each project's source file (*.lpr).
508
509 You may find that in order for the IDE to recognise that ibexpressconsolemode
510 exists, you have to first open the package in the IDE and then close it. This
511 adds it to the most recently accessed packages list. To make it permanently
512 available, add the package name to lazarus' staticpackages.inc file.
513
514 Thanks to Julio Jiménez for suggesting support of console mode.
515
516 7. SQL Parser can now accept quoted strings that include new lines
517
518 8. IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
519 of text on start of edit. This is particularly useful when tabbing to a
520 column and then inserting text.
521
522 9. New Examples provided for IB Services and ISQLMonitor.
523
524 10. Fix error when writing to blob streams that recorded only the last buffer
525 write in the blob stream. In most cases, this did not cause a problem as the
526 IB Blob Stream is written in a single write. However, with the TDBImage, write
527 of a graphic type prefix was lost which caused a problem when the image could
528 not be automatically recognised.
529
530 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
531 already open" errors due to random numbers used for the cursor name being identical.
532
533 12. IBTable: corrected error that could result in an "Index out of bounds" error
534 when opening the table and the Primary Key is the last or only column in the
535 table. Thanks to Rick Hoover for the fix.
536
537 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
538 of "UTF-8", and update list of available database character sets. Existing
539 users should check the current lc_ctype setting in their applications.
540
541 IBX Change Log version (1.2-4) Sat, 09 May 2015 12:38:29 +0100
542
543 1. Firebird Services: avoid List Index error when opening a service with an
544 empty Params property.
545
546 2. IBControls: Fix problem with new link mechanism introduced in 1.2.3.
547 Link now set up in Loaded method - avoids occasional failure to apply
548 SQL markup on initial open.
549
550 3. "Employees" example performance improvements when scrolling.
551
552 4. DBControlGrid: Correctly handle edit panel removal when panel is child control of a
553 TFrame. Force recaching of selected frame to avoid GTK race (results in a
554 random image cached).
555
556 5. DBControlGrid: Should now react to changes in panel height at run time.
557
558 6. IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid
559 even when further rows exist.
560
561 7. DBControlGrid: DefaultRowHeight is no longer a published property as it should
562 always be derived from panel height and setting this property can cause confusion.
563 Note for existing projects: to avoid a missing property error at run time,
564 each form using the DBControlGrid must be opened, updated and saved in the IDE
565 in order to remove the property value from the lfm.
566
567
568 IBX Change Log version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
569
570 1. TIBStoredProc. Prepare now called by ParamByName to avoid need to always
571 call Prepare before setting parameter values.
572
573 2. Error message on ParamByName (all cases) not found now includes name of missing parameter.
574
575 3. Code tidyup and more robust handling of dsql information result vector.
576
577 4. Support for centralised handling of transaction status changes. TIBTransaction
578 has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
579 and "AfterExecQuery". The first three are called after the same event is called
580 for an IBCustomDataSet descendent using the Transaction. The fourth is called
581 after a call to TIBSQL.ExecQuery, again using this transaction. These new events
582 enable monitoring of transaction status changes for a given transaction to be
583 handled in a single place. For example, when a change to the dataset occurs
584 an indicator can be set that shows the user that in order to save changes,
585 the transaction should be committed. Rather than doing this per dataset, this
586 can now be done per transaction.
587
588 5. TDataSet.CheckBrowseMode automatically posts changes to the current row when
589 the dataset is scrolled. However, any changes to the current row are, by default,
590 discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
591 have a new property "DataSetCloseAction" that adds automatic posting of changes
592 on dataset close. If this property is set to dcDiscardChanges (default) then the
593 behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
594 then IBX will attempt to post any unsaved changes before the dataset is closed
595 (and after the BeforeClose event handler is called). The exception is when the
596 dataset is being closed as a result of a transaction rollback. In this case,
597 no action is taken and any unsaved changes are discarded. This avoids both
598 unnecessary overhead and the risk that a validation error may occur in the Post
599 raising an exception and thereby preventing a rollback.
600
601 6. String Field sizes and Display Widths should now be correct for multi-byte character sets.
602 In earlier versions, the Display Width was set to the maximum byte width rather than the character
603 width. Display Widths are now corrected by dividing by the max byte width per character.
604 For UTF8 character sets, the byte width is four and hence the Display Width will be
605 the byte width divided by 4. The byte width of each character set is determined
606 dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
607 system table. (see also http://bugs.freepascal.org/view.php?id=27766).
608
609 7. SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
610
611 8. IBLookupComboEditBox: List should now always be restored to full list when the
612 control loses focus. Default Key press default interval reduced to 200ms.
613
614 9. DBControlGrid: Ensure that selection is changed to newly appended row, even
615 when dataset rows are less than visible rows.
616
617 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
618 does not exist or DataSet is empty. More responsive on dataset open. New event
619 OnRestorePosition. Column sort disabled if no header row.
620
621 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
622 while dataset state is dsInsert. Avoids posting errors.
623
624 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
625 avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
626
627 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
628
629 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
630 to solve a specific problem. That is when the dataset cursor is moved (e.g. by
631 a grid mouse click and the current row is being edited or inserted. In this case, TDataset
632 always "posts" the current record regardless or whether or not it may be more appropriate
633 to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
634 "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
635 as the first action of the "Post" method and allows the handler to convert the Post
636 into a Cancel if that is the appropriate action on moving to a different row. This is
637 achieved by returning with "CancelPost" argument set to true. Note that an exception could be
638 raised here, but it may still be more appropriate to validate a post and signal
639 a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
640
641 15. On Unix derived systems, the Firebird library name can now be given as a colon
642 separated list. Each library name on the list is tried in turn, in left to right
643 order with the first found being used as the firebird library. By default, on Linux,
644 the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
645 overidden by the FBLIB environment variable or the OnGetLibraryName function.
646
647 Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
648 then it will still attempt to access the database via the Firebird Server and will
649 require a username and password. If only the pathname is given, then the username
650 and password should be omitted and the unix file permissions are used to grant
651 access.
652
653 IBX Change Log version (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
654
655 1. A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
656 rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
657 that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
658 corresponds to a row of the linked DataSource. Any data aware control on the
659 replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
660
661 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
662 When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
663 takes place during database access. This may be useful when there are performance issues with
664 the change of cursor. Setting the property to false suppresses the change of cursor.
665
666 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
667 and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
668 Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
669 making all changes permanent immediately rather than when the transaction is explicitly
670 committed.
671
672 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
673 using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
674
675 IBX Change Log version (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
676
677 Development version only.
678
679 IBX Change Log version (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
680
681 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
682 This is typically used during an "OnBeforeOpen" event handler to manipulate the
683 "Where" and "Having" clauses to implement user specified filters of arbitrary
684 complexity.
685
686 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
687 three new data aware controls dependent on IBX and which make use of the SQL Parser.
688 These are:
689
690 - TIBLookupComboEditBox
691 - TIBDynamicGrid
692 - TIBTreeview
693
694 TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
695 of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
696 to revise the available list and restrict it to items that are prefixed by the
697 typed text (either case sensitive or case insensitive). Autoinsert allows a
698 newly typed entry to be added to the list dataset and included in the available
699 list items.
700
701 TIBDynamicGrid is a TDBGrid descendent that provides for:
702 - automatic resizing of selected columns to fill the available row length
703 - automatic positioning and sizing of a "totals" control, typically at the
704 column footer, on a per column basis.
705 - DataSet resorting on header row click, sorting the dataset by the selected column.
706 A second click on the same header cell reversed the sort order.
707 - Support for a "Panel Editor". That is on clicking the indicator column, the row
708 is automatically expanded and a panel superimposed on it. The panel can have any
709 number of child controls, typically data aware controls with the same datasource
710 as the grid allowing for editing of additional fields and more complex editors.
711 - Reselection of the same row following resorting.
712 - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
713 Its properties are specified on a per column basis and allows for one or more
714 columns to have their values selected from a list provided by a dataset.
715 Autocomplete and autoinsert are also available. The existing picklist editor
716 is unaffected by the extension.
717
718 TIBTreeView is a data aware TCustomTreeView.
719
720 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
721 zero scale will no longer return an error. An Int64 will be returned instead.
722
723 4. TIBTransaction now has events for Before and After Transaction End and a new function
724 "GetEndAction" allowing the EndAction to be accessed by these event handlers.
725
726 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
727 repeated multiple times.
728
729 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
730 check used to get in the way of using Stored Procedures, and "Update or Insert"
731 statements.
732
733 7. Insert, Modify and Delete property Editors now support Query Generation from
734 Stored Procedures.
735
736 8. Three new examples illustrate the use of the new IB Controls
737
738
739 IBX Change Log version (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
740
741 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
742 setting performance. See "readme.field+param.names in the doc folder.(Thanks to
743 Gabor Boros for reporting this problem and for testing the improvements).
744
745 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
746 See readme.field+param.names in the doc folder.
747
748 3. IBX SQL Editors will now automatically add double quotes around column names when the database
749 dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
750
751 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
752
753 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
754 actions.
755
756 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
757 thanks to Yuriy Kopnin for pointing this out).
758
759 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
760
761 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
762 for both fields and parameter setting.
763
764 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
765 visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
766
767 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
768 when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
769
770 11. TIBTable now has a property editor for "MasterFields"
771
772 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
773 GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
774
775 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
776 of settings is unrecognised. Selecting this radio button has no effect on the settings.
777
778
779 IBX Change Log version (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
780
781 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
782
783 IBX Change Log version (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
784
785 1. In a TIBCustomDataset descendent, a generator now only sets the value when
786 it is null. This allows for alternative user defined setting of the generator
787
788 Many thanks to Julio Jiménez for this fix
789
790 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
791 and suggests that the user may have forgotten to install it.
792
793 IBX Change Log version (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
794
795 1. Conditional compilation used to limit registration of TIntegerField to
796 Lazarus versions less than 1.1
797
798 2. When a database connection is created, character set is now by default set
799 to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
800 1250 to 1254.
801
802
803 IBX Change Log version (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
804
805 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
806
807
808 IBX Change Log version (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
809
810 1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
811 Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1
812
813 2. IBX now registers TIntegerField as a "No Icon" component. This may be removed if the fpc DB
814 package is changed to do this (which it should do).
815
816 IBX Change Log version (1.0-0) Sat, 28 Apr 2012 16:43:00 +0100
817
818 1. Add "if active then active := false" to TIBCustomDataset destructor. (Avoid error on database close).
819
820 2. Make use of $STATIC conditional in IBSQLMonitor (Needed for FPC 2.6.0 compliance)
821
822 3. Database Property Editor: Character Set drop down box now uses "OnChange" rather than "OnCloseUp" to react to changes
823
824 4. Property editors should now correctly resize.
825
826 5. In IBDatabaseEdit.TestClick, the LoginPrompt is now set to the state of the LoginPrompt Checkbox
827 (restored original functionality)
828
829 6. Under OSX, if IBX fails to load libfbclient.dylib, it will now try and load the firebird
830 library using the absolute path /Library/Frameworks/Firebird.framework/Firebird.