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Revision: 139
Committed: Wed Jan 24 16:16:29 2018 UTC (6 years, 2 months ago) by tony
File size: 43299 byte(s)
Log Message:
Fixes Merged

File Contents

# User Rev Content
1 tony 139 IBX Change Log version (2.2-0) Tue, 23 Jan 2018 11:23:09 +0000
2 tony 101
3 tony 107 1. IBExtract: Identity columns - add additional check for null column for generator name.
4 tony 101
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 tony 107 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 tony 101
11 tony 107 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 tony 123 returning should be significantly more efficient than executing a refresh query.
19 tony 107
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 tony 118 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 tony 107 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 tony 118 5. TIBTable: The GeneratorField property is now published.
37 tony 107
38 tony 118 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
39 tony 101 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 tony 118 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
44 tony 107 Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
45     Insert..Returning clause.
46 tony 104
47 tony 118 8. TIBGenerator: small performance improvement by not preparing query each time
48 tony 107 a new value is generated.
49 tony 104
50 tony 118 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
51 tony 107
52 tony 118 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 tony 105
55 tony 118 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
56 tony 107 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 tony 105
59 tony 118 12. Property Editors handling of Stored Procedures.
60 tony 107 * 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 tony 106
65 tony 118 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
66 tony 107 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 tony 118 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
71 tony 107 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 tony 118 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
76 tony 109 for password on reconnect.
77 tony 107
78 tony 118 16. IBDatabase: use IAttachment for connection default character set id, code page
79     and character set name.
80 tony 109
81 tony 118 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 tony 127 19. Add a property Editor for TIBUpdate.RefreshSQL.
87 tony 118
88 tony 139 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
89     parameters. This stops an exception being raised when the field cannot be
90     located in the record buffer.
91 tony 127
92 tony 139
93 tony 90 IBX Change Log version (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
94 tony 56
95     1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
96     changes.
97    
98 tony 58 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
99     Bug could result in truncated multi-byte character set values.
100    
101 tony 60 3. Changes consequential on moving fbintf character set utility functions from
102     IFirebirdAPI to IAttachment.
103    
104 tony 62 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
105    
106 tony 64 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
107     results in autocomplete ignoring prefix text.
108    
109 tony 65 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
110     entering a new name into the text box.
111    
112 tony 66 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
113     Firebird rather than recomputing it.
114    
115 tony 67 8. Property Editor positioning tidy up: All IBX Property editors should now be
116     screen centre. Previously some were "poDesigned" which may be inappropriate
117     for multi monitor desktops.
118    
119 tony 80 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
120    
121     11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
122     a transaction and always reset the object.
123    
124     12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
125    
126     13. TIBXScript: Allow for override of database filename in Create Database statements.
127    
128     14. IBLocaldb: Support initialisation of the database from an SQL script in addition
129     to a gbak format archive.
130    
131     15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
132    
133     16. IBLocaldb: Drop database if error creating an empty database.
134    
135     17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
136     unless selected node not in current dataset.
137    
138     18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
139     to TIBCustomService, and IBlocalDB code tidy up.
140    
141     19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
142     behaviour due to uninitialised variable.
143    
144     20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
145     integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
146    
147     21. IBSQL: When Database changed ensure that all resources are freed.
148    
149     22. IBCustomDataset: When database changed ensure that queries an unprepared.
150    
151 tony 84 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
152     * Line Wrap on SQL Token boundaries (on user command)
153     * auto-complete table names in drop down list of table names
154     * Double click on tablename or field name adds to SQL text
155 tony 80
156     24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
157    
158     25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
159     TVariantArray. Seems to avoid memory corruption in Windows (probably a
160     workaround for a problem in fpc 3.0.4 win64).
161    
162     26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
163    
164 tony 83 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
165    
166 tony 51 IBX Change Log version (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
167 tony 49
168 tony 51 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
169 tony 49 include remote system name.
170    
171     2. TIBExtract: No longer include comment header and COMMIT statement for empty
172     tables when data included in output.
173    
174     3. Profiling: IBSQL now has conditional compilation flags to enable query performance
175     and timing information to be written to stdout. This may be used to locate
176     performance bottlenecks.
177    
178     4. SQLParser: only call "OnChanging" event handler when value is different.
179    
180     5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
181    
182 tony 50 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
183     that BindFields is called when the query is next activated. Avoids FieldName
184     not found error.
185    
186 tony 80 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
187     purpose and allows the programmer to define any action they want for Update, Insert
188     or Delete. This may be complex SQL (similar to a Trigger), application specific
189     filtering of updates, or use of statements such as Grant or Revoke instead of
190     normal DML. See User Manual for more information.
191    
192 tony 47 IBX Change Log version (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
193 tony 45
194 tony 47 1. TIBEvents: Fix uninitialised variable that could result in lost events.
195 tony 45
196 tony 47 2. TIBExtract: Added support for FB3 "USAGE" privilege.
197    
198     3. TIBExtract: data formatted as Charset set "octets" is now output using
199     hexadecimal notation.
200    
201     4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
202     using a simple XML format.
203    
204     5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
205     grants to these objects.
206    
207     6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
208     dependency problems restoring complex databases.
209    
210     7. TIBXScript: This component has been restructured to allow for the processing of
211     embedded XML in INSERT statements and to support interactive sources in addition
212     to non-interactive data sources such as files.
213    
214     8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
215    
216     9. TIBXScript: ISQL compatiable Set statements are now supported:
217     SET SQL DIALECT
218     SET TERM
219     SET AUTODDL
220     SET BAIL
221     SET ECHO
222     SET COUNT
223     SET STATS
224     SET NAMES <character set>
225    
226     10. IBVersion unit added to hold current IBX Version Number information.
227    
228     11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
229     and domain definitions.
230    
231     12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
232     fully supported.
233    
234     13. TIBExtract: when a database dump includes data, the generator values are now also set.
235    
236     14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
237    
238     IBX Change Log version (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
239    
240 tony 50 See also doc/IBX4LazarusGuide.pdf for important information on
241 tony 45 upgrading to IBX2.
242    
243     1. Size property of TIBStringField is now the width in characters of the field
244     and not the byte length. This applies only to multi-byte character sets such
245     as UTF8. The original approach aligned with TStringField. However, the TStringField
246     code is not recognised as a bug and hence this change to align the behaviour.
247     The TStringField change is expected in fpc 3.2.0.
248    
249     2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
250     true (default) then Size property value saved in the lfm is ignored. Size is
251     always set from the dynamic information read from the database. It is unclear
252     why anyone would want to override this and set Size to false.
253    
254     3. ibxscript: should now handle correctly a Case..End statement within a procedure
255     block.
256    
257     4. IBDatabase: new property - CreateIfNotExists. If true and database does not
258     exist when an attempt is made to connect to it (run time only) then an attempt
259     is made to create the database.
260    
261     5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
262     has been successfully created as a result of a call to CreateDatabase or when
263     creating a database after it was found not to exist.
264    
265     6. DBControlGrid: a race condition could result in the wrong row image being
266     written to the cache. This has been avoided by a trip round the message
267     loop before rendering the row image.
268    
269     7. DBControlGrid: It is strongly recommended not to open the source DataSet for
270     a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
271     known to risk corrupt rendering of row images when the control is first
272     displayed. If necessary use "Application.QueueAsyncCall" to delay opening
273     of the dataset (see DBControlGrid examples) until the Form's Window has been created.
274    
275     8. DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
276     a TDateEdit control located on an editor panel.
277    
278     9. TIBExtract: brought up-to-date plus many bug fixes.
279    
280     10. DBControlGrid: Removed memory leak when updating rows.
281    
282     11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
283    
284 tony 43 IBX Change Log version (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
285    
286     1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
287     when target codepage is CP_NONE. This is a workaround for
288     http://bugs.freepascal.org/view.php?id=30622.
289    
290     2. DBLog option removed from TIBStatisticalService - not supported by server
291     since Firebird 1.5.
292    
293     3. ibxscript: An error is no longer generated for "on commit preserve rows" or
294     similar.
295    
296     4. IBCodePage: updated mapping between codepages and character id.
297    
298     5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
299     Firebird. Character sets with a char width of two are not UTF16.
300    
301     6. Strings received from the database are now always transliterated into UTF8
302     regardless of the database character set or connection character set. This
303     is for compatibility with the LCL.
304    
305 tony 45 IBX Change Log version (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
306 tony 41
307     1. IBBlob: Defer reading of blob until read method called. This avoids having to
308     read in an entire blob just to get the size of the blob. General performance
309     improvement when opening datasets containing blobs.
310    
311     2. Clearing a Blob now sets the corresponding field's modified flag.
312    
313     3. IBLookupCombo: When not performing auto-complete, original query sort order
314     is now used.
315    
316     4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
317     determined.
318    
319     5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
320    
321     6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
322     lazarus 1.6.0
323    
324     7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
325     compilation error.
326    
327 tony 39 IBX Change Log version (1.4-1) Tue, 17 May 2016 09:14:51 +0100
328    
329     1. No character set specified for connection: when a text blob is retrieved, the
330     character set is determined by looking up the native character set using then
331     Firebird API. Otherwise a text mode blob is assumed to have the same character
332     set as the connection.
333    
334     2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
335     for Login Dialog returing a change to the database path.
336    
337     3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
338     to be changed from that given in the TIBDatabase/TIBServer component and for the
339     entered value to be saved on a project specific basis (design time only).
340    
341     4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
342     column fieldname. If they are the same then it is acts as a look up for the KeyValue
343     Otherwise, it sets the column text to the selected ListField Value.
344    
345     5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
346     column width.
347    
348     6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
349     and a case insensitive search is requested.
350    
351     7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
352     or column ListSource.
353    
354     8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
355     unprepare) when closing and the text has not changed.
356    
357     9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
358     Less likely to cause a cursor re-use error on Windows.
359    
360     10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
361     Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
362    
363     11. TIBTreeView: Guard against nil destination on record changed
364    
365     12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
366     string type with the code page set to reflect the returned field encoding after
367     Firebird driver transliteration, if any. FPC 3.0.0 onwards only. Behaviour unchanged for
368     earlier versions.
369    
370     13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
371     will now result in transliteration to the code page specified for the Firebird driver
372     if the assigned string has a different code page. FPC 3.0.0 onwards only.
373    
374     14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
375     is ignored and the lc_ctype value, when the database is opened, is set to align with
376     the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
377     platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
378     3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
379     the GETACP is used to determine the Windows code page.
380    
381     15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
382     name used as the lc_ctype when the database was opened. Only valid while the
383     Database is connected.
384    
385     16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
386     id that corresponds to the DefaultCharSetName.
387    
388 tony 37 IBX Change Log version (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
389    
390     1. Unix: If Firebird Embedded Server shared object is loaded and a local database
391     path is given and database attach fails due to access permission issues on the
392     temp directory or security database, then the attach is retried with "localhost:"
393     prefixing the databasename. This should avoid problems when the database has to
394     be accessed by a local (e.g. classic) server and libfbembed is used.
395    
396     2. Windows: revised search order for Firebird DLL:
397     i. The Firebird Embedded Server in the application Directory.
398     ii. If the FIREBIRD environment variable is set then the directory this
399     points to is searched for the FB Client DLL and then then underlying
400     "bin" directory.
401     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
402     is used to locate the Firebird installation directory and the underlying
403     "bin" directory is searched for the FB Client DLL.
404     iv. The Default installation directories C:\Program Files\Firebird\Firebird_2_x
405     are searched for the FB Client DLL.
406     v. The PATH Environment variable is used to search for the FB Client DLL.
407     vi. Finally the PATH Environment variable is used to search for IBASE.DLL.
408    
409     3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
410     See doc/readme.scriptengine and example applications.
411    
412     4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
413     simplify the use of the embedded firebird server on both Linux and Windows platforms.
414     See dpc/readme.localdatabase and example applications.
415    
416     5. IBDynamicGrid: Reordering on column header click should now also work for
417     dynamic columns.
418    
419     6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
420     between incrementing/decrementing the lock count and signalling the event.
421    
422 tony 35 IBX Change Log version (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
423    
424 tony 37 1.3.2 was never formally released and only made available as beta copies.
425    
426 tony 35 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
427    
428     2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
429    
430     3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
431    
432     4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
433     i.e. when it is a calculated field
434    
435     5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
436     This problem was due to a race condition between recalculating row heights and
437     determining which row was selected by the mouse click. The row height calculation
438     is now deferred by an extra trip round the message loop allowing the row to
439     be always calculated on the current grid layout rather than risking it being
440     calculated on the grid layout after the expanded row has been shrunk.
441    
442     6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
443     Windows.
444    
445     7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
446     These properties allow the (Firebird) character set name for the field and the max number of bytes per character
447 tony 37 to be determined at runtime. See doc/readme.charactersets.html.
448 tony 35
449     8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
450 tony 37 TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
451 tony 35
452     9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
453     TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
454 tony 37 1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
455 tony 35
456     Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
457     from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
458     implies no truncation.
459    
460     10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
461    
462     11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
463     (avoids "Not in Edit Mode" error).
464    
465     12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
466    
467     13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
468     DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
469    
470     14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
471    
472     15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
473    
474     16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
475    
476     17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
477    
478 tony 33 IBX Change Log version (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
479 tony 31
480     1. OnCloseUp Event Handler added to TDBLookupProperties
481    
482     2. IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
483     problem with row size when exception is called.
484    
485     3. IBLookupComboEditBox: Force pending autocomplete on combobox exit.
486    
487     4. IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
488     in a TCustomComboBox and ignores return key if in a TCustomMemo
489    
490     5. IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
491     keyed in i.e. when autocomplete not performed
492    
493 tony 33 6. Cleanup of "Uses" clauses and add console mode support. IBX should now support
494     console mode applications with all LCL required functions (builtin dialogs and
495     cursor management) centralised in the IBDialogs unit. As long as "IBDialogs" is
496     not included in your project, IBX should compile and link with a console mode program.
497     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
498     console mode application or the IDE will automatically assume that your
499     application is GUI based. Instead, you should include the ibexpressconsolemode package.
500 tony 31
501     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
502     to use the built in dialogs and cursor management. IBDialogs is
503 tony 33 included by default if "ibexpress" is in your project source's "uses" clause.
504 tony 31 This should be the case for all projects created through the IDE. This is why
505     you do not want to add the ibexpress package to console mode applications. The
506     ibexpressconsolemode package has been created to allow console mode programs
507     to avoid adding LCL dependencies when using IBX, while still having the
508     unit search paths set up correctly.
509    
510 tony 33 Existing users should check to ensure that the "ibexpress" unit is included in
511     each project's source file (*.lpr).
512    
513 tony 31 You may find that in order for the IDE to recognise that ibexpressconsolemode
514     exists, you have to first open the package in the IDE and then close it. This
515     adds it to the most recently accessed packages list. To make it permanently
516     available, add the package name to lazarus' staticpackages.inc file.
517    
518 tony 33 Thanks to Julio Jiménez for suggesting support of console mode.
519 tony 31
520     7. SQL Parser can now accept quoted strings that include new lines
521    
522     8. IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
523     of text on start of edit. This is particularly useful when tabbing to a
524     column and then inserting text.
525    
526     9. New Examples provided for IB Services and ISQLMonitor.
527    
528     10. Fix error when writing to blob streams that recorded only the last buffer
529     write in the blob stream. In most cases, this did not cause a problem as the
530     IB Blob Stream is written in a single write. However, with the TDBImage, write
531     of a graphic type prefix was lost which caused a problem when the image could
532     not be automatically recognised.
533    
534     11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
535 tony 33 already open" errors due to random numbers used for the cursor name being identical.
536 tony 31
537     12. IBTable: corrected error that could result in an "Index out of bounds" error
538     when opening the table and the Primary Key is the last or only column in the
539     table. Thanks to Rick Hoover for the fix.
540    
541 tony 33 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
542     of "UTF-8", and update list of available database character sets. Existing
543     users should check the current lc_ctype setting in their applications.
544 tony 29
545 tony 33 IBX Change Log version (1.2-4) Sat, 09 May 2015 12:38:29 +0100
546    
547 tony 29 1. Firebird Services: avoid List Index error when opening a service with an
548     empty Params property.
549    
550     2. IBControls: Fix problem with new link mechanism introduced in 1.2.3.
551     Link now set up in Loaded method - avoids occasional failure to apply
552     SQL markup on initial open.
553    
554     3. "Employees" example performance improvements when scrolling.
555    
556     4. DBControlGrid: Correctly handle edit panel removal when panel is child control of a
557     TFrame. Force recaching of selected frame to avoid GTK race (results in a
558     random image cached).
559    
560     5. DBControlGrid: Should now react to changes in panel height at run time.
561    
562     6. IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid
563     even when further rows exist.
564    
565     7. DBControlGrid: DefaultRowHeight is no longer a published property as it should
566     always be derived from panel height and setting this property can cause confusion.
567     Note for existing projects: to avoid a missing property error at run time,
568     each form using the DBControlGrid must be opened, updated and saved in the IDE
569     in order to remove the property value from the lfm.
570    
571    
572 tony 33 IBX Change Log version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
573 tony 27
574     1. TIBStoredProc. Prepare now called by ParamByName to avoid need to always
575     call Prepare before setting parameter values.
576    
577     2. Error message on ParamByName (all cases) not found now includes name of missing parameter.
578    
579     3. Code tidyup and more robust handling of dsql information result vector.
580    
581     4. Support for centralised handling of transaction status changes. TIBTransaction
582     has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
583     and "AfterExecQuery". The first three are called after the same event is called
584     for an IBCustomDataSet descendent using the Transaction. The fourth is called
585     after a call to TIBSQL.ExecQuery, again using this transaction. These new events
586     enable monitoring of transaction status changes for a given transaction to be
587     handled in a single place. For example, when a change to the dataset occurs
588     an indicator can be set that shows the user that in order to save changes,
589     the transaction should be committed. Rather than doing this per dataset, this
590     can now be done per transaction.
591    
592     5. TDataSet.CheckBrowseMode automatically posts changes to the current row when
593     the dataset is scrolled. However, any changes to the current row are, by default,
594     discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
595     have a new property "DataSetCloseAction" that adds automatic posting of changes
596     on dataset close. If this property is set to dcDiscardChanges (default) then the
597     behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
598     then IBX will attempt to post any unsaved changes before the dataset is closed
599     (and after the BeforeClose event handler is called). The exception is when the
600     dataset is being closed as a result of a transaction rollback. In this case,
601     no action is taken and any unsaved changes are discarded. This avoids both
602     unnecessary overhead and the risk that a validation error may occur in the Post
603     raising an exception and thereby preventing a rollback.
604    
605     6. String Field sizes and Display Widths should now be correct for multi-byte character sets.
606     In earlier versions, the Display Width was set to the maximum byte width rather than the character
607     width. Display Widths are now corrected by dividing by the max byte width per character.
608     For UTF8 character sets, the byte width is four and hence the Display Width will be
609     the byte width divided by 4. The byte width of each character set is determined
610     dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
611     system table. (see also http://bugs.freepascal.org/view.php?id=27766).
612    
613     7. SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
614    
615     8. IBLookupComboEditBox: List should now always be restored to full list when the
616     control loses focus. Default Key press default interval reduced to 200ms.
617    
618     9. DBControlGrid: Ensure that selection is changed to newly appended row, even
619     when dataset rows are less than visible rows.
620    
621     10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
622     does not exist or DataSet is empty. More responsive on dataset open. New event
623     OnRestorePosition. Column sort disabled if no header row.
624    
625     11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
626     while dataset state is dsInsert. Avoids posting errors.
627    
628     12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
629     avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
630    
631     13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
632    
633     14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
634     to solve a specific problem. That is when the dataset cursor is moved (e.g. by
635     a grid mouse click and the current row is being edited or inserted. In this case, TDataset
636     always "posts" the current record regardless or whether or not it may be more appropriate
637     to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
638     "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
639     as the first action of the "Post" method and allows the handler to convert the Post
640     into a Cancel if that is the appropriate action on moving to a different row. This is
641     achieved by returning with "CancelPost" argument set to true. Note that an exception could be
642     raised here, but it may still be more appropriate to validate a post and signal
643     a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
644    
645     15. On Unix derived systems, the Firebird library name can now be given as a colon
646     separated list. Each library name on the list is tried in turn, in left to right
647     order with the first found being used as the firebird library. By default, on Linux,
648     the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
649     overidden by the FBLIB environment variable or the OnGetLibraryName function.
650    
651     Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
652     then it will still attempt to access the database via the Firebird Server and will
653     require a username and password. If only the pathname is given, then the username
654     and password should be omitted and the unix file permissions are used to grant
655     access.
656    
657 tony 33 IBX Change Log version (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
658 tony 23
659     1. A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
660     rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
661     that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
662 tony 27 corresponds to a row of the linked DataSource. Any data aware control on the
663 tony 23 replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
664    
665     2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
666 tony 25 When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
667 tony 23 takes place during database access. This may be useful when there are performance issues with
668     the change of cursor. Setting the property to false suppresses the change of cursor.
669    
670     3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
671     and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
672     Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
673     making all changes permanent immediately rather than when the transaction is explicitly
674     committed.
675    
676 tony 25 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
677 tony 27 using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
678 tony 23
679 tony 33 IBX Change Log version (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
680 tony 25
681     Development version only.
682    
683 tony 33 IBX Change Log version (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
684 tony 21
685     1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
686     This is typically used during an "OnBeforeOpen" event handler to manipulate the
687     "Where" and "Having" clauses to implement user specified filters of arbitrary
688     complexity.
689    
690     2. A new Component Palette entry "Firebird Data Controls" is now available. This has
691     three new data aware controls dependent on IBX and which make use of the SQL Parser.
692     These are:
693    
694     - TIBLookupComboEditBox
695     - TIBDynamicGrid
696     - TIBTreeview
697    
698     TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
699     of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
700     to revise the available list and restrict it to items that are prefixed by the
701 tony 25 typed text (either case sensitive or case insensitive). Autoinsert allows a
702 tony 21 newly typed entry to be added to the list dataset and included in the available
703     list items.
704    
705     TIBDynamicGrid is a TDBGrid descendent that provides for:
706     - automatic resizing of selected columns to fill the available row length
707     - automatic positioning and sizing of a "totals" control, typically at the
708     column footer, on a per column basis.
709     - DataSet resorting on header row click, sorting the dataset by the selected column.
710     A second click on the same header cell reversed the sort order.
711     - Support for a "Panel Editor". That is on clicking the indicator column, the row
712     is automatically expanded and a panel superimposed on it. The panel can have any
713     number of child controls, typically data aware controls with the same datasource
714     as the grid allowing for editing of additional fields and more complex editors.
715     - Reselection of the same row following resorting.
716     - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
717     Its properties are specified on a per column basis and allows for one or more
718     columns to have their values selected from a list provided by a dataset.
719     Autocomplete and autoinsert are also available. The existing picklist editor
720     is unaffected by the extension.
721    
722     TIBTreeView is a data aware TCustomTreeView.
723    
724     3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
725     zero scale will no longer return an error. An Int64 will be returned instead.
726    
727     4. TIBTransaction now has events for Before and After Transaction End and a new function
728     "GetEndAction" allowing the EndAction to be accessed by these event handlers.
729    
730     5. TIBQuery can now handle correctly queries which contain the same keyword parameter
731     repeated multiple times.
732    
733     6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
734     check used to get in the way of using Stored Procedures, and "Update or Insert"
735     statements.
736    
737     7. Insert, Modify and Delete property Editors now support Query Generation from
738     Stored Procedures.
739    
740     8. Three new examples illustrate the use of the new IB Controls
741    
742    
743 tony 33 IBX Change Log version (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
744 tony 19
745     1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
746     setting performance. See "readme.field+param.names in the doc folder.(Thanks to
747     Gabor Boros for reporting this problem and for testing the improvements).
748    
749     2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
750     See readme.field+param.names in the doc folder.
751    
752     3. IBX SQL Editors will now automatically add double quotes around column names when the database
753     dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
754    
755     4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
756    
757     5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
758     actions.
759    
760     6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
761     thanks to Yuriy Kopnin for pointing this out).
762    
763     7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
764    
765     8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
766     for both fields and parameter setting.
767    
768     9. Changes to the Select SQL in an IBCustomDataset descendent should now be
769     visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
770    
771     10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
772     when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
773    
774     11. TIBTable now has a property editor for "MasterFields"
775    
776     12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
777     GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
778    
779     13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
780     of settings is unrecognised. Selecting this radio button has no effect on the settings.
781    
782    
783 tony 17 IBX Change Log version (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
784    
785     1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
786    
787 tony 15 IBX Change Log version (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
788    
789     1. In a TIBCustomDataset descendent, a generator now only sets the value when
790     it is null. This allows for alternative user defined setting of the generator
791    
792     Many thanks to Julio Jiménez for this fix
793    
794     2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
795     and suggests that the user may have forgotten to install it.
796    
797 tony 13 IBX Change Log version (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
798    
799     1. Conditional compilation used to limit registration of TIntegerField to
800     Lazarus versions less than 1.1
801    
802     2. When a database connection is created, character set is now by default set
803     to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
804     1250 to 1254.
805    
806    
807 tony 11 IBX Change Log version (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
808    
809     1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
810    
811    
812 tony 9 IBX Change Log version (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
813 tony 7
814     1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
815     Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1
816    
817     2. IBX now registers TIntegerField as a "No Icon" component. This may be removed if the fpc DB
818     package is changed to do this (which it should do).
819    
820     IBX Change Log version (1.0-0) Sat, 28 Apr 2012 16:43:00 +0100
821    
822     1. Add "if active then active := false" to TIBCustomDataset destructor. (Avoid error on database close).
823    
824     2. Make use of $STATIC conditional in IBSQLMonitor (Needed for FPC 2.6.0 compliance)
825    
826     3. Database Property Editor: Character Set drop down box now uses "OnChange" rather than "OnCloseUp" to react to changes
827    
828     4. Property editors should now correctly resize.
829    
830     5. In IBDatabaseEdit.TestClick, the LoginPrompt is now set to the state of the LoginPrompt Checkbox
831     (restored original functionality)
832    
833     6. Under OSX, if IBX fails to load libfbclient.dylib, it will now try and load the firebird
834     library using the absolute path /Library/Frameworks/Firebird.framework/Firebird.