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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

# User Rev Content
1 tony 56 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 tony 58 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
7     Bug could result in truncated multi-byte character set values.
8    
9 tony 60 3. Changes consequential on moving fbintf character set utility functions from
10     IFirebirdAPI to IAttachment.
11    
12 tony 62 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
13    
14 tony 51 IBX Change Log version (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
15 tony 49
16 tony 51 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
17 tony 49 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 tony 50 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 tony 47 IBX Change Log version (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
35 tony 45
36 tony 47 1. TIBEvents: Fix uninitialised variable that could result in lost events.
37 tony 45
38 tony 47 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 tony 50 See also doc/IBX4LazarusGuide.pdf for important information on
83 tony 45 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 tony 43 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 tony 45 IBX Change Log version (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
148 tony 41
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 tony 39 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 tony 37 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 tony 35 IBX Change Log version (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
265    
266 tony 37 1.3.2 was never formally released and only made available as beta copies.
267    
268 tony 35 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 tony 37 to be determined at runtime. See doc/readme.charactersets.html.
290 tony 35
291     8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
292 tony 37 TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
293 tony 35
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 tony 37 1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
297 tony 35
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 tony 33 IBX Change Log version (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
321 tony 31
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 tony 33 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 tony 31
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 tony 33 included by default if "ibexpress" is in your project source's "uses" clause.
346 tony 31 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 tony 33 Existing users should check to ensure that the "ibexpress" unit is included in
353     each project's source file (*.lpr).
354    
355 tony 31 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 tony 33 Thanks to Julio Jiménez for suggesting support of console mode.
361 tony 31
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 tony 33 already open" errors due to random numbers used for the cursor name being identical.
378 tony 31
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 tony 33 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 tony 29
387 tony 33 IBX Change Log version (1.2-4) Sat, 09 May 2015 12:38:29 +0100
388    
389 tony 29 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 tony 33 IBX Change Log version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
415 tony 27
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 tony 33 IBX Change Log version (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
500 tony 23
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 tony 27 corresponds to a row of the linked DataSource. Any data aware control on the
505 tony 23 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 tony 25 When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
509 tony 23 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 tony 25 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
519 tony 27 using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
520 tony 23
521 tony 33 IBX Change Log version (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
522 tony 25
523     Development version only.
524    
525 tony 33 IBX Change Log version (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
526 tony 21
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 tony 25 typed text (either case sensitive or case insensitive). Autoinsert allows a
544 tony 21 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 tony 33 IBX Change Log version (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
586 tony 19
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 tony 17 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 tony 15 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 tony 13 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 tony 11 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 tony 9 IBX Change Log version (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
655 tony 7
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.