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Revision 312 by tony, Tue Aug 25 15:40:58 2020 UTC

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1 < IBX Change Log  version                                      (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1 > IBX Change Log  version (2.3-5 Build 12350) Tue, 25 Aug 2020 16:11:02 +0100
2 >
3 > 1.  TIBStringField: when a string value is read from a dataset buffer, if the
4 >    number of UTF8 characters exceeds the string size then string is truncated
5 >    to the maximum string size. This is  usually a problem with fixed width columns
6 >    right padded with white space.
7 >
8 > 2.  SQLFiltered and SQLFilterParams added to TIBQuery, TIBTable and TIBDataset.
9 >    If SQLFiltered is set then when a dataset is opened, each line in the
10 >    SQLFilterParams property is assumed to be a SQL condition clause and
11 >    ANDed into the Where clause of the SQL Select statement provided as a
12 >    dataset property. Each such SQL condition thus acts as an additional filter
13 >    on the dataset. (Not yet tested)
14 >
15 > 3.  The Filtered property inherited from TDataset is no longer used for SQL (server
16 >    side filters).
17 >
18 > 4. IBLookupComboEditBox: Selection should no longer reset to start of text when
19 >   text matches complete entry.
20 >
21 > 5. TIBDataLink: Detail Dataset params not refreshed unless both master and detail
22 >   dataset are active (avoids risk of access violation if master is inactive)
23 >
24 > 6. TIBEvents: Registered property can now be set at design time even if database not open
25 >
26 > 7. TIBEvents: component now correctly re-initialised after call to UnregisterEvents.
27 >   This should prevent "spillover" of events between sessions.
28 >
29 > 8. TIBCustomDataset: GetNextRecord now called when reseting to first record of a unidirectional dataset.
30 >   This should ensure that the internal buffer is set up correctly and avoids
31 >   a duplicate initial row.
32 >
33 > 9. TIBStringField: DataSize now given as byte size of string less trailing any zero character.
34 >   That is, the DataSize should be the field size * character set width. The
35 >   value returned by DataSize is now the same as the Dataset buffer size reserved
36 >   for the field.
37 >
38 > 10. IBExtract: Tidyup of SQL generation. Avoid unnecessary double quotes.
39 >
40 > 11. TIBCustomDataset: Add checks on buffer sizes when copying data from row to field buffer
41 >    and vice-versa. This may result in an exception being raised (correctly) for
42 >    older programs when using dataset fields added to a form and the database has been
43 >    upgraded. For example, computed fields can change from 32-bit to 64-bit integers.
44 >    In such cases, the field needs to be deleted in the IDE fields editor and then
45 >    added back in.
46 >
47 > 12. IBCustomDataSet: CanInsert, CanEdit, CanDelete and CanRefresh updated to return
48 >    false if query contains white space and not just empty.
49 >
50 > 12. IBCustomDataset: Blob data is now cleared when TDataSet.Cancel is called. This
51 >    should ensure that (e.g.) a TDBMemo is correctly refreshed after a dataset edit
52 >    is cancelled.
53 >
54 > IBX Change Log  version (2.3-4 Build 12041) Fri, 17 Apr 2020 14:00:32 +0100
55 >
56 > 1.  TIBXDataSet and Generators: Generator Names that are not all upper case or
57 >    not SQL Identifiers are now supported.
58 >
59 > 2.  TIBXScript: Set Generator is no longer rejected as unrecognised SQL and is
60 >    passed to the Firebird engine for execution.
61 >
62 > 3.  TIBDataSet: Unidirectional datasets now give an error message if an attempt
63 >    is made to scroll back.
64 >
65 > 4.  New unit: IBMessages.pas. Contains only messages used by IBX and not FBIntf
66 >
67 > 5. TIBLookupComboEditBox: When generating auto-complete SQL, the ListField is now
68 >   only enclosed in double quotes in SQL dialect 3 and when it needs to be.
69 >
70 > 6. TIBLookupComboEditBox: when the list source opens, the ListField name is now
71 >   validated. If no match is found in the list of field names and the database has
72 >   been opened in SQL Dialect 3, then the ListField Name is converted to upper case
73 >   if it then matches a field name. Otherwise, a Listfield not valid exception occurs.
74 >
75 > 7. IBGeneratoreditor.pas: Add missing parenthesis around "IS" statement for compliance
76 >   with fpc 3.2.
77 >
78 > IBX Change Log  version (2.3-3 Build 11512) Fri, 28 Dec 2018 10:04:17 +0000
79 >
80 >
81 > 1. New property for TIBDatabase and TIBXServicesConnection. This is "ConfigOverrides"
82 >   and is used to override the default settings in the client side "firebird.conf" This
83 >   includes "WireCompression" and "WireCrypt". The value of this property is a "TStrings".
84 >   Each line of the string list should be a setting in the same format as "firebird.conf".
85 >   For example "WireCompression = true" in order to request wire compression on the client side.
86 >
87 >   Note: explicit settings in the client side "firebird.conf" appear to take precedence
88 >   over settings given in TIBDatabase and TIBXServicesConnection. Many client side settings
89 >   also require a compatible setting in the server side "firebird.conf". For example
90 >   "WireCompression = true" must also be set in the server's "firebird.conf" for wire
91 >   compression to be used.
92 >
93 >   Whether or not WireCompression or WireCrypt are in use can be checked using the information
94 >   returned with the Client/Server protocol version. See ibx/examples/dbadmin and
95 >   ibx/examples/dbinfo for examples of how to display this information.
96 >
97 > 2. New property for TIBDatabase and TIBXServicesConnection: "WireCompression". This
98 >   is a "convenience" property. If set the "WireCompression=true" is added to the
99 >   ConfigOverrides. If unchecked then this setting is removed.
100 >
101 > 3. TIBExtract: 64-bit integer types are now correctly extracted as "BIGINT" and
102 >   not "INT64".
103 >
104 > 4. New published properties for TIBCSVDataOut, TIBInsertStmtsOut and TIBBlockFormatOut
105 >   These are:
106 >    property TimestampFormat: string;
107 >    property DateFormat: string;
108 >    property TimeFormat: string;
109 >
110 >   Respectively, these provide the date time format templates for SQL types: TIMESTAMP,
111 >   DATETIME and TIME. The format strings use the standard FPC date/time format
112 >   characters (see https://www.freepascal.org/docs-html/rtl/sysutils/formatchars.html).
113 >
114 >   If any of the above properties are set to an empty string, then the locale default
115 >   is used. This uses the ShortDateFormat and the LongTimeFormat. In timestamp, the
116 >   locale default is extended by appending '.zzz' to include milliseconds.
117 >
118 >   TIBCSVDataOut by default sets these properties to the empty string, while the other
119 >   two use: 'yyyy.mm.dd hh:nn:ss.zzz', 'yyyy.mm.dd' and 'hh:nn:ss.zzz' respectively.
120 >
121 > 5. New published property for TIBCSVDataOut:
122 >     property QuoteStrings: boolean (default true)
123 >
124 >   If false then strings are unquoted, otherwise, the QuoteChar property value is
125 >   used to delimit each and every string in the output.
126 >
127 > 6. New published properties for TIBCSVDataOut:
128 >    property FieldSeparator: string;
129 >    property HeaderSeparator: string;
130 >
131 >   Respectively, these provide the separator character(s) used to separate fields
132 >   in data and header rows. Both default to ','.
133 >
134 > 7. New published properties for TIBCSVDataOut and TIBBlockFormatOut:
135 >    TOnFormatTextString = procedure(sender: TObject; var TextString: string) of object;
136 >    property OnFormatTextString;
137 >
138 >   This event handler can be used to process text strings before they are included
139 >   in the output e.g. to replace unprintable characters with alternative strings.
140 >   This only applies to columns with an SQL Type of SQL_VARYING and SQL_TEXT.
141 >
142 > 8. TIBDataSet now raises an exception when ParamByName called with an invalid parameter name.
143 >   Uses "FindParam" if in order to find out if a parameter with a given name exists
144 >   and without raising and exception if it does not.
145 >
146 > 9. TIBQuery now uses IBX SQL Parser instead of the TParams SQL parser in order to ensure
147 >   consistency with SQL queries.
148 >
149 > 10. CaseSensitiveParameterNames property added to TIBSQL, TIBDataSet and TIBQuery.
150 >    When true, SQL statement parameter names are parsed case sensitive. Note for
151 >    TIBDataSet only applies to Select query.
152 >
153 > 11. IBEvents: removing a TIBEvent component from a form should no longer result in
154 >    an IDE exception.
155 >
156 > 12. LocalDBSupport: initial database creation should now work correctly
157 >    when the schema source is an sql file.
158 >
159 > 13. TIBCMLocalDBSupport: new event handler "property OnProgressEvent: TOnProgressEvent"
160 >    when defined, this handler will be called by the internal TIBXScript during
161 >    initial database creation when the schema source is an sql file and may be used
162 >    to provide a visual indication of progress in console mode.
163 >
164 > 14. TCustomIBLocalDBSupport: new public property "InOnCreateDB: boolean". This is set
165 >    to true while a new local database is being created and its schema populated.
166 >    Useful in (e.g.) TIBDatabase.OnAfterConnect handler to suppress actions
167 >    when the database is disconnected/connected during the create DB procedure.
168 >
169 > 15. TIBXScript: any User/password parameters found in a CREATE DATABASE statement
170 >    are now always ignored and replaced by the user name and password provided as
171 >    the login parameters for the TIBDatabase referenced from the TIBXScript. The
172 >    IgnoreCreateDatabase property still applies and the CREATE DATABASE statement is
173 >    completely ignored if this property is true.
174 >
175 > 16. Code tidyup in IBTreeView: Node properties initialisation moved from TIBTreeView.AddNodes
176 >    to TIBTreeView.Added. An OnAddition event handler is no longer needed to initialise
177 >    ImageIndex and SelectImageIndex values on AddNode.
178 >
179 > 17. TIBDatabase.Attachment and TIBXServicesConnection.ServicesIntf properties are now
180 >    read/write. This should enabled (e.g.) multiple instances of TIBDatabase to share
181 >    the same database connection.
182 >
183 > 18. TIBDataSet and TIBQuery now support the TDataSet "Filter" property.
184 >    if provided, this should be an conditional SQL expression suitable for
185 >    including in an SQL Select statement "where" clause. If non-empty and the
186 >    "Filtered" property is true then the SQL expression provided as the value of
187 >    the "Filter" property is "ANDed" with any existing condition statement
188 >    in the SQL statement's "Where" clause.
189 >
190 >    If the "Filter" property is set at run time, the "Filtered" property is true
191 >    and the dataset is already open, then the dataset is closed and re-opened automatically.
192 >
193 >    The "Filter" condition may include IBX style parameters. In which case, their
194 >    value must be set by the dataset's "OnBeforeOpen" event handler.
195 >
196 >    This is a public property for TIBDataSet and TIBQuery query and intended for
197 >    use at run time.
198 >
199 >    Note: The property is a published property of TIBTable. The TIBTable functionality
200 >    is unaffected by this change.
201 >
202 > IBX Change Log  version (2.3-2) Wed, 05 Dec 2018 12:19:23 +0000
203 >
204 > 1. Remove need to check for IsMultiThread by providing access to GUI timers via
205 >   IBGUIInterface. Note: master/detail delay timer does not apply to console
206 >   mode apps.
207 >
208 > 2. TIBCustomDataSet: SQLParser ignored if it does not contain a valid select
209 >   statement. This avoids problems if "Execute Block" is used as the Query.
210 >
211 > 3. IBSQLParser now uses the common SQL tokeniser from fbintf. This replaces the
212 >   internal SQL tokeniser routines.
213 >
214 > 4. IBSQLParser: new property NotaSelectStmt. Set to true if SQL fails to parse
215 >   as a select statement, with or without CTEs.
216 >
217 > 5. IBSQLParser: parser now recognises the "ROWS" clause.
218 >
219 > 6. TIBXScript now uses the common SQL tokeniser from fbintf. This replaces the
220 >   internal SQL tokeniser routines.
221 >
222 > 7.  Fix error in TIBXScript processing of "set" statements. This avoids exceptions
223 >    being raised for valid set statements processed by a data formatter.
224 >
225 > 8. New published property for TIBDatabase and TIBXServicesConnection. This is
226 >   FirebirdLibraryPathName: string. If not empty it is used to explicitly specify
227 >   the path of the Firebird Library used by the database/services connection.
228 >
229 > 9. New read only public property for TIBDatabase and TIBXServicesConnection. This
230 >   is FirebirdAPI and returns the IFirebirdAPI interface used by the database/
231 >   services connection.
232 >
233 > 10.SQL Property editors now quote parameter names if "Quote identifier" is selected
234 >   or param name is not a valid SQL identifier.
235 >
236 > 11. IBLookupComboEditBox: In Lazarus 2.0, TDBLookupComboBox takes a more restrictive
237 >    view of whether the text box should be editable when no DataSource is specified.
238 >    TIBLookupComboEditBox has been updated to workaround this problem. As long as
239 >    ReadOnly is false, the text box is editable when no DataSource is specified.
240 >
241 > 12. AllowUseOfFBLIB is now set to "true" at design time. This is to allow use of
242 >    the FBLIB environment variable. If you do not want to permit this then you
243 >    must modify the Register procedure in the design/IBDBReg.pas unit to remove
244 >    this setting.
245 >
246 > IBX Change Log  version                 (2.3-1) Thu, 25 Oct 2018 14:39:45 +0100
247 >
248 > 1. IBCustomDataset: replace deprecated function ValidUTF8String with call to
249 >   Utf8EscapeControlChars
250 >
251 > IBX Change Log  version                (2.3-0) Mon, 16 Apr 2018 09:48:06 +0100
252 >
253 > IMPORTANT: the source code tree has been re-organised for IBX 2.3. Please remove
254 > all previous copies of the IBX source code tree before installing this release.
255 >
256 > The IBX packages used by most users have not changed, with one exception. The
257 > IBServices unit has been moved to the package iblegacyServices.lpk. To continue
258 > to use the IBServices unit in your applications, please add the iblegacyServices
259 > to the list of dependencies. To do this, open the Project Inspector and select
260 > Add->New Requirement and select "ibLegacyServices" from the list of available
261 > packages.
262 >
263 > 1. New unit IBXServices. The IBXServices unit is a re-architectured update of
264 >   the IBServices unit providing what is intended to be a clearer and easier to
265 >   use set of IB Services components. See Chapter 10 of the IBX User Guide for
266 >   more information and the guide to "Firebird Service Management Using IBX".
267 >   As indicated above, the legacy services components are still available and
268 >   provided in a separate package. There is no need to update working applications
269 >   using the older versions except for an additional package dependency.
270 >
271 > 2. The IBX packages and source code tree have been re-organised in an attempt to
272 >   finally get rid of the "duplicate ppu" warnings. This re-organisation should
273 >   not affect existing users. Section 2.3 of the IBX User Guide describes the
274 >   new set of IBX packages.
275 >
276 > 3. The ibx/examples/DBAdmin and the ibx/examples/services example have been
277 >   updated to use the new Services API components.
278 >
279 > 4. The iblocal package has been updated to use the new Services API components.
280 >
281 > 5. procedure SetAutoAdmin; in the new IBX Services this method is now a member of
282 >   TIBXSecurityService. It had been wrongly classified in the previous version
283 >   as a per database configuration item. It is global to a server and hence
284 >   correctly positioned as part of the Security Package. In the DBAdmin example,
285 >   the setting has moved to the mappings page.
286 >
287 > 6. TIBXScript: IgnoreCreateDatabase added. If true then CREATE DATABASE statements
288 >   are ignored.
289 >
290 > 7. TIBDatabase: DropDatabase now ensures that all transactions have been properly
291 >   closed before the database is dropped. Before and After Disconnect event handlers
292 >   are also fired.
293 >
294 > 8. TIBTransaction: OnStartTransaction event now fires every time the transaction
295 >   is started and not just the first time.
296 >
297 > 9. IBDataOutput: Use FormatFloat for all performance statistics to avoid platform
298 >   depenendency with comp type.
299 >
300 > 10. IBDataOutput: select query data output is now sent to stdout instead of stderr.
301 >
302 > 11. TIBDatabase: Remove regression. If a user login dialog changes the DatabaseName
303 >    then this is recognised and not ignored.
304 >
305 > 12. TIBDataSet, TIBQuery, TIBTable: additions:
306 >    function GetRowsAffected(var SelectCount, InsertCount, UpdateCount, DeleteCount: integer): boolean;
307 >    function GetPerfStatistics(var stats: TPerfCounters): boolean;
308 >    property EnableStatistics: boolean read FEnableStatistics write SetEnableStatistics;
309 >
310 >    GetRowsAffected returns the affected row counts from the last insert/update/delete
311 >    if EnableStatistics = true then GetPerfStatistics returns the current stats
312 >    counters for the select query. Note: stats accumulate after each fetch from
313 >    the database. To get total query cost after open, call the "Last" method
314 >    and then GetPerfStatistics.
315 >
316 >    See ibx/examples/consolemode for an example of the use of GetPerfStatistics
317 >
318 > 13. TIBExtract: Identity columns DDL. "Start with clause" now correctly encapsulated
319 >    in parenthesises.
320 >
321 > 14. TIBExtract: new published property "AlwaysQuoteIdentifiers". If true then in dialect 3
322 >    SQL identifiers are always delimited by double quotes. If false, then they are
323 >    only delimited if the identifier is a reserved word, contains lower case or special
324 >    characters. Set this property to true to retain previous behaviour.
325 >
326 > 15. Insert SQL Property Editor. In Insert Returning Clause, Identity column names
327 >    are now inserted in double quotes if not Reserved Words or valid SQL Identifiers.
328 >
329 > 16. TIBDataSet, TIBQuery, TIBTable: addition:
330 >       property MasterDetailDelay: integer {defaults to zero}
331 >
332 >    When non-zero and the dataset is a detail table referencing a master table
333 >    through either a MasterSource (TIBTable) or a DataSource (TIBDataSet, TIBQuery)
334 >    then a synchronisation delay is added (in milliseconds) between the master
335 >    row changing and the detail dataset being re-opened. If the master dataset
336 >    is scrolled before the delay expires then the delay is reset. This can be used
337 >    to avoid performance overheads when scrolling through a large master dataset.
338 >
339 >    Note: uses fptimer and hence requires a thread manager. Under Linux the
340 >    chreads unit must be included in your project. TTimer is not used in order
341 >    to avoid an LCL dependency. Requires FPC 3.0.2 or later.
342 >
343 > 17. TIBExtract: User role grants now excluded when etGrantsToUser not specified
344 >    with Extract Option eoDatabase.
345 >
346 > 18. TIBLookupComboEditBox: Workaround added for https://bugs.freepascal.org/view.php?id=33428
347 >    When a deLayoutChanged event is reported on the ListSource dataset, the
348 >    combobox text is updated. This allows a listsource (detail) to be in a Master/Detail
349 >    relationship with the control's datasource (master).
350 >
351 > 19. TIBExtract: Full BigInt value range now supported for Generators/Sequences.
352 >
353 > 20. TIBExtract: Select Procedures (Procedure type 1) now include "SUSPEND;" clause in their
354 >    stubs. Pedantic fix really, as procedures output in dependency order anyway.
355 >
356 > 21. TIBExtract: Package Headers and Package Bodies are now included in the extracted
357 >    DDL (Firebird 3 and later only).
358 >
359 > 22. TIBLookupComboBox Autocomplete Fixes:
360 >    i. Only appended text is now selected after autocomplete.
361 >    ii. Uppercase keys no longer ignored for autocomplete.
362 >    iii. Retain Prefix case is now honoured correctly.
363 >    iv. When a DataSource is assigned, typing after autocomplete now extends prefix
364 >        before autocomplete performed. i.e. behaviour now the same as when
365 >        no DataSource assigned.
366 >
367 > 23. TIBXScript: Single Line Comments starting with '--' are now ignored when occurring
368 >    between SQL statements.
369 >
370 > 24. TIBExtract: New published property CaseSensitiveObjectNames. If false (default) then
371 >    ObjectNames are converted to upper case before matching against metadata object
372 >    names, unless the objectname is delimited by double quotes, in which case, the
373 >    double quotes are removed and the remaining string is used (unmodified) to match
374 >    against the metadata object name.
375 >
376 >    If true then the ObjectName is used as is without modification and matched
377 >    against the metadata object name. No attempt is made to remove double quotes.
378 >
379 > 25. TIBExtract: New Extract Types: etDatabaseTriggers and etDDLTriggers. When used
380 >    with eoTrigger, these extract types can be used to select only Database Triggers,
381 >    or DDL Triggers or both. Ignored when etTable or etTrigger included in Extract Types.
382 >
383 > 26. TIBXScript: If an exception occurs during the processing of a statement, the
384 >    statement separate character is now reset to the default (';').
385 >
386 > 27. TIBDatabase: Reconnect method added and used by TIBXScript for reconnect.
387 >
388 > 28. TIBXScript: Transaction is no longer automatically reactivated immediately processing
389 >    a commit or reconnect statement and instead activated only when next SQL statement
390 >    is executed.
391 >
392 > 29. TIBSQL.HasField should no longer generate and exception when the field does not exist.
393 >
394 > 30. TIBXScript: case insensitive regex now used when matching statements instead of
395 >    converting statement to upper case.
396 >
397 > 31. TIBExtract: metadata comments now supported. New published property
398 >    IncludeMetaDataComments (default true). If true then metadata comments included
399 >    in extracted DDL. New Extract Object member eoComments. This may be used with
400 >    ExtractObject method to list all metadata comments.
401 >
402 > 32. TIBExtract: ListObjectNames method added.
403 >
404 > 33. Updated Database component editor to support additional connection string
405 >    types.
406 >
407 > IBX Change Log  version  (2.2-0) Wed, 28 Feb 2018 10:57:45 +0000
408 >
409 > NOTE: THE LOCATIONS OF SOME OF THE UNIT DIRECTORIES HAS CHANGED FROM IBX 2.1. THIS IS TO
410 > AVOID DUPLICATE PPU WARNINGS. PLEASE REMOVE EARLIER VERSIONS OF IBX BEFORE INSTALLING THIS
411 > RELEASE.
412 >
413 > NOTE: THE DBADMIN DEMO REQUIRES THAT THE MemDSLaz PACKAGE IS INSTALLED IN THE LAZARUS IDE.
414 >
415 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
416 >
417 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
418 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
419 >   information). However, this is also a very useful mechanism for returning updated computed by
420 >   column values. Values returned as a result of executing an Insert or Update statement
421 >   replace existing values in the current row for each corresponding column.
422 >
423 >   Previously, if a dataset's select query included read only (computed by) fields then
424 >   an automatic row refresh was performed after an insert or update query had been processed,
425 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
426 >   that an automatic refresh is no longer performed if an insert or update query contains
427 >   a returning clause that updates one or more fields on the current row. A full row
428 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
429 >   field values and the select query contains read only fields. Use of Insert/update
430 >   returning should be significantly more efficient than executing a refresh query.
431 >
432 >   This behaviour change is intended to be backwards compatible and there should be no need to change
433 >   existing programs, other than to improve performance by using the new capability.
434 >
435 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
436 >   they are called when the dataset row is being deleted, there is no value in
437 >   updating the current record from the query result. Instead, a new event handler
438 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
439 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
440 >   by the query. The event handler can then interrogate the query results and
441 >   perform whatever action is necessary. For example to confirm, to the user,
442 >   the deletion of a row with the returned values.
443 >
444 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
445 >   any Computed By or Identity Columns. The IBTables example has been updated to
446 >   illustrate the computation of the employee Full Name on update.
447 >
448 > 5. TIBTable: The GeneratorField property is now published.
449 >
450 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
451 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
452 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
453 >   each Identity column after the insert is executed.
454 >
455 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
456 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
457 >   Insert..Returning clause.
458 >
459 > 8. TIBGenerator: small performance improvement by not preparing query each time
460 >   a new value is generated.
461 >
462 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
463 >
464 > 10. Property editors will now sync table name to a System Table when "Include System
465 >    Tables" is selected and the query is for a System Table.
466 >
467 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
468 >    values are no longer converted to milliseconds from TDateTime and then back again
469 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
470 >
471 > 12. Property Editors handling of Stored Procedures.
472 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
473 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
474 >      query).
475 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
476 >
477 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
478 >    can be used to select a package. If non-empty, the stored procedure name is
479 >    expected to be a stored procedure defined in the specified package and the
480 >    generated SQL will be as required for a stored procedure located in a package.
481 >
482 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
483 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
484 >    which a stored procedure can be selected. With no package name selected, non-package
485 >    stored procedures are listed.
486 >
487 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
488 >    for password on reconnect.
489 >
490 > 16. TIBDatabase: use IAttachment for connection default character set id, code page
491 >    and character set name.
492 >
493 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
494 >    DB info lookups"
495 >
496 > 18. IBExtract: now supports DDL Triggers and Grants to DDL objects.
497 >
498 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
499 >
500 > 20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
501 >    parameters. This stops an exception being raised when the field cannot be
502 >    located in the record buffer.
503 >
504 > 21. Property Editors now automatically include System Tables when opened and when the query table
505 >    is a System Table.
506 >
507 > 22. IBServices: SQRB and SRB buffers are now reset when service query throws an exception.
508 >    This avoids errors due to a stale SQRB or SRB being used for the next query.
509 >
510 > 23. IBServices: Service attach parameters now include "expected_db". This is used to
511 >    add the SPB item isc_spb_expected_db. This names a database using
512 >    an alternative Security Database (FB3 onwards) and allows (e.g. backup/restore) using such a
513 >    database. examples/services re-written to illustrate use of "expected_db".
514 >
515 > 24. IBServices: TIBControlAndQueryService.WriteNextChunk no longer ignores isc_info_svc_timeout.
516 >    This avoids truncated backups when the server returns a timeout (busy) response.
517 >
518 > 25. TIBDatabase: isc_dpb_page_size now supported as a database parameter when using TIBDatabase.CreateDatabase.
519 >
520 > 26. TIBDatabase: DatabaseName property may now be prefixed by $TEMP$ or $DATADIR$ for local
521 >    databasenames. These are respectively expanded to the local system's temp directory
522 >    (including trailing delimiter) or to a prescribed data directory (including
523 >    trailing delimiter). Under Unix systems the data directory is a hidden directory
524 >    in the user's home directory. The hidden directory name is either the string returned
525 >    from the SysUtils "Vendor Name" or "IBX" if empty. In either case prefixed by a '.'.
526 >    Under Windows, the directory is the same as the Data Directory as decribed
527 >    above but instead prefixed by the User's application data path. These may be
528 >    used to improve application portability for Personal Databases.
529 >
530 > 27. TIBTable: FieldDefs property is no longer published. Due to the use of TIBFieldDef
531 >    this has not worked for a long time and is not useful either. FieldDefs should be
532 >    managed using the Fields Editor as with any other dataset. To access the fields
533 >    editor for a TIBTable component, double click on the component. The fields editor
534 >    is then displayed.
535 >
536 > 28. TIBDatabaseInfo: new properties/function
537 >     * DateDBCreated (returns date/time database created)
538 >     * TransactionCount (returns no. of active transactions)
539 >     * GetDatabasePage(PageNo: integer) (returns contents of specified database page - SYSDBA only).
540 >     * PagesFree (Firebird 3 or later)
541 >     * PagesUsed (Firebird 3 or later)
542 >     * Encrypted (returns true if database encrypted. (Firebird 3.0.3 or later only)
543 >     * EncryptionKeyName (returns the name of the encryption key if any (Firebird 3.0.3 or later only)
544 >
545 > 29. IBServices classes now provided the decoded release number in the (array) property ServerVersionNo.
546 >
547 > 30. TIBSecurityService now supports display/modification of the User Admin Role (Firebird 2.5 and later).
548 >
549 > 31. TIBConfigService now has a procedure SetAutoAdmin(Value: boolean) to enable/disable
550 >    the automtic mapping of privileged OS users to the RDB$ADMIN role (Firebird 2.5 and later).
551 >
552 > 32. TIBBackupService: New Option - NoDBTriggers equivalent to -nodbtriggers switch introduced
553 >    in the gbak utility at V.2.1 to prevent database-level and transaction-level triggers from
554 >    firing during backup and restore.
555 >
556 > 33. Both TIBBackupService and TIBRestoreService now support backup/restore statistics options
557 >    for verbose output using the new property "StatisticsRequested".
558 >    see https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-util-gbak.html#rnfb25-util-gbakstats
559 >
560 > 34. TIBRestoreService: now supports new options RestoreMetaDataOnly (Firebird 2.5 and later).
561 >
562 > 35. TIBOnlineValidationService component added to the IBServices and the "Firebird Admin"
563 >    palette. This uses the online validation feature added in Firebird 2.5. The
564 >    services's properties enable inclusion/exclusion of tables and indexes using
565 >    regular expressions. See.
566 >    https://firebirdsql.org/file/documentation/release_notes/html/en/2_5/rnfb25-apiods-api.html#rnfb25-apiods-api-onlinevalidation
567 >
568 > 36. IBServices: procedure TIBConfigService.SetNoLinger added to set no linger
569 >    option on a database.
570 >
571 > 37. TIBCustomService: Assign method implemented to allow copying of service login
572 >    context between service API components. "Detach" method now only detaches
573 >    service when last reference to the service interface detaches. Tidy up of
574 >    code for SetActive and Attach methods including password hiding.
575 >
576 > 38. TIBDatabase: new properties: AuthenticationMethod and RemoteProtocol. Read only
577 >    and used to determine the auth method and protocol used for the connection.
578 >
579 > 39. TIBDatabase: ensure that SQLDialect setting is used when creating a database using
580 >    a Create Database Statement generated by IBX.
581 >
582 > 40. All IBServices now have an additional published property "PortNo". This may
583 >    be set to a non-standard port number when necessary. If zero then the default
584 >    port number is used.
585 >
586 > 41: TIBLookupComboeditBox: Ensure dataset updated when change selected with the keyboard
587 >    and not just the mouse.
588 >
589 > 42. TIBCustomDataset: reopen query if already active when a TIBControlLink is added.
590 >
591 > 43. TIBTreeview: new ImageIndexField and SelectedIndexField Property allows the
592 >    image index and selected image index for each node to be set from a database field.
593 >
594 > 44. TIBExtract: new extract type (etGrantsToUser) for use with eoDatabase. If included
595 >    then database schema includes grants to all users. If not present then the
596 >    only user grants included are those to User PUBLIC.
597 >
598 > 45. TIBTreeView: performance improvement. When expanding include both expanded node
599 >    and child nodes in dataset.
600 >
601 >
602 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
603 >
604 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
605 >   changes.
606 >
607 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
608 >   Bug could result in truncated multi-byte character set values.
609 >
610 > 3. Changes consequential on moving fbintf character set utility functions from
611 >   IFirebirdAPI to IAttachment.
612 >
613 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
614 >
615 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
616 >   results in autocomplete ignoring prefix text.
617 >
618 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
619 >   entering a new name into the text box.
620 >
621 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
622 >   Firebird rather than recomputing it.
623 >
624 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
625 >   screen centre. Previously some were "poDesigned" which may be inappropriate
626 >   for multi monitor desktops.
627 >
628 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
629 >
630 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
631 >    a transaction and always reset the object.
632 >
633 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
634 >
635 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
636 >
637 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
638 >    to a gbak format archive.
639 >
640 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
641 >
642 > 16. IBLocaldb: Drop database if error creating an empty database.
643 >
644 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
645 >    unless selected node not in current dataset.
646 >
647 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
648 >    to TIBCustomService, and IBlocalDB code tidy up.
649 >
650 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
651 >    behaviour due to uninitialised variable.
652 >
653 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
654 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
655 >
656 > 21. IBSQL: When Database changed ensure that all resources are freed.
657 >
658 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
659 >
660 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
661 >    * Line Wrap on SQL Token boundaries (on user command)
662 >    * auto-complete table names in drop down list of table names
663 >    * Double click on tablename or field name adds to SQL text
664 >
665 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
666 >
667 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
668 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
669 >    workaround for a problem in fpc 3.0.4 win64).
670 >
671 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
672 >
673 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
674 >
675 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
676 >
677 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
678 >   include remote system name.
679 >
680 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
681 >   tables when data included in output.
682 >
683 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
684 >   and timing information to be written to stdout. This may be used to locate
685 >   performance bottlenecks.
686 >
687 > 4. SQLParser: only call "OnChanging" event handler when value is different.
688 >
689 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
690 >
691 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
692 >   that BindFields is called when the query is next activated. Avoids FieldName
693 >   not found error.
694 >
695 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
696 >   purpose and allows the programmer to define any action they want for Update, Insert
697 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
698 >   filtering of updates, or use of statements such as Grant or Revoke instead of
699 >   normal DML. See User Manual for more information.
700 >
701 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
702 >
703 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
704 >
705 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
706 >
707 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
708 >   hexadecimal notation.
709 >
710 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
711 >   using a simple XML format.
712 >
713 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
714 >   grants to these objects.
715 >
716 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
717 >   dependency problems restoring complex databases.
718 >
719 > 7. TIBXScript: This component has been restructured to allow for the processing of
720 >   embedded XML in INSERT statements and to support interactive sources in addition
721 >   to non-interactive data sources such as files.
722 >
723 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
724 >
725 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
726 >   SET SQL DIALECT
727 >   SET TERM
728 >   SET AUTODDL
729 >   SET BAIL
730 >   SET ECHO
731 >   SET COUNT
732 >   SET STATS
733 >   SET NAMES <character set>
734 >
735 > 10. IBVersion unit added to hold current IBX Version Number information.
736 >
737 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
738 >    and domain definitions.
739 >
740 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
741 >    fully supported.
742 >
743 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
744 >
745 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
746 >
747 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
748 >
749 > See also doc/IBX4LazarusGuide.pdf for important information on
750 > upgrading to IBX2.
751 >
752 > 1. Size property of TIBStringField is now the width in characters of the field
753 >   and not the byte length. This applies only to multi-byte character sets such
754 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
755 >   code is not recognised as a bug and hence this change to align the behaviour.
756 >   The TStringField change is expected in fpc 3.2.0.
757 >
758 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
759 >   true (default) then Size property value saved in the lfm is ignored. Size is
760 >   always set from the dynamic information read from the database. It is unclear
761 >   why anyone would want to override this and set Size to false.
762 >
763 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
764 >   block.
765 >
766 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
767 >   exist when an attempt is made to connect to it (run time only) then an attempt
768 >   is made to create the database.
769 >
770 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
771 >   has been successfully created as a result of a call to CreateDatabase or when
772 >   creating a database after it was found not to exist.
773 >
774 > 6.  DBControlGrid: a race condition could result in the wrong row image being
775 >    written to the cache. This has been avoided by a trip round the message
776 >    loop before rendering the row image.
777 >
778 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
779 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
780 >    known to risk corrupt rendering of row images when the control is first
781 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
782 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
783 >
784 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
785 >    a TDateEdit control located on an editor panel.
786 >
787 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
788 >
789 > 10. DBControlGrid: Removed memory leak when updating rows.
790 >
791 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
792 >
793 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
794 >
795 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
796 >   when target codepage is CP_NONE. This is a workaround for
797 >   http://bugs.freepascal.org/view.php?id=30622.
798 >
799 > 2. DBLog option removed from TIBStatisticalService - not supported by server
800 >   since Firebird 1.5.
801 >
802 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
803 >   similar.
804 >
805 > 4. IBCodePage: updated mapping between codepages and character id.
806 >
807 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
808 >   Firebird. Character sets with a char width of two are not UTF16.
809 >
810 > 6. Strings received from the database are now always transliterated into UTF8
811 >   regardless of the database character set or connection character set. This
812 >   is for compatibility with the LCL.
813 >
814 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
815 >
816 > 1. IBBlob: Defer reading of blob until read method called. This avoids having to
817 >   read in an entire blob just to get the size of the blob. General performance
818 >   improvement when opening datasets containing blobs.
819 >
820 > 2. Clearing a  Blob now sets the corresponding field's modified flag.
821 >
822 > 3. IBLookupCombo: When not performing auto-complete, original query sort order
823 >   is now used.
824 >
825 > 4. IBDynamicGrid: Add OnSelectEditor event. Allows editor panel to be dynamically
826 >   determined.
827 >
828 > 5. IBDynamicGrid: Recompute column widths after dataset closed and re-opened.
829 >
830 > 6. IBLookupCombo: LazUTF8 added to uses clause to avoid compilation problems post
831 >   lazarus 1.6.0
832 >
833 > 7. IBControls. Removed "runtime" from list of paths to avoid "multiple packages"
834 >   compilation error.
835 >
836 > IBX Change Log  version                                 (1.4-1) Tue, 17 May 2016 09:14:51 +0100
837 >
838 > 1. No character set specified for connection: when a text blob is retrieved, the
839 >  character set is determined by looking up the native character set using then
840 >  Firebird API. Otherwise a text mode blob is assumed to have the same character
841 >  set as the connection.
842 >
843 > 2. TIBGUIInterface: this is an internal interface. Minor type changes to allow
844 >   for Login Dialog returing a change to the database path.
845 >
846 > 3. Design Time Database and Server login Dialogs now allow the Database Name/Server Name
847 >   to be changed from that given in the TIBDatabase/TIBServer component and for the
848 >   entered value to be saved on a project specific basis (design time only).
849 >
850 > 4. IBDynamicGrid: TDBLookupCellEditor now compares its DataFieldName with the
851 >   column fieldname. If they are the same then it is acts as a look up for the KeyValue
852 >   Otherwise, it sets the column text to the selected ListField Value.
853 >
854 > 5. IBDynamicGrid: Only visible columns are now taken into account When recalculating
855 >   column width.
856 >
857 > 6. IBLookupComboEditBox: Fix error with autocomplete query when a RelationName is given
858 >   and a case insensitive search is requested.
859 >
860 > 7. IBDynamicGrid: No longer ignores notifications removing Column Totals controls
861 >   or column ListSource.
862 >
863 > 8. IBQuery: no longer performs unnecessary refresh of SQL Text (and hence avoids an
864 >   unprepare) when closing and the text has not changed.
865 >
866 > 9. IBSQL: Base the cursor name on a GUID instead of a hexstr version of the class pointer.
867 >   Less likely to cause a cursor re-use error on Windows.
868 >
869 > 10.SV5IPC: include workaround for OSX. FPC 3.0.0 has broken ipc module for darwin.
870 >   Expected to be fixed in 3.0.2. Hence workaround only applies to 3.0.0.
871 >
872 > 11. TIBTreeView: Guard against nil destination on record changed
873 >
874 > 12. AnsiString Code page support: TIBStringField.AsString and TIBMemoField.AsString now return a
875 >    string type with the code page set to reflect the returned field encoding after
876 >    Firebird driver transliteration, if any.  FPC 3.0.0 onwards only. Behaviour unchanged for
877 >    earlier versions.
878 >
879 > 13. AnsiString Code page support: Assigning to TIBStringField.AsString and TIBMemoField.AsString
880 >    will now result in transliteration to the code page specified for the Firebird driver
881 >    if the assigned string has a different code page. FPC 3.0.0 onwards only.
882 >
883 > 14. TIBDatabase: new property UseDefaultSystemCodePage. When set any lc_ctype parameter
884 >    is ignored and the lc_ctype value, when the database is opened, is set to align with
885 >    the DefaultSystemCodePage (FPC 3.0.0 onwards). Normally, this is what you want and should ensure
886 >    platform independence. Note: this applies to FPC 3.0.0 and earlier versions. Pre FPC
887 >    3.0.0, when this property is true, the lc_ctype is UTF8 except under windows when
888 >    the GETACP is used to determine the Windows code page.
889 >
890 > 15. TIBDatabase: new property DefaultCharSetName. This is the Firebird character set
891 >    name used as the lc_ctype when the database was opened. Only valid while the
892 >    Database is connected.
893 >
894 > 16. TIBDatabase: new property DefaultCodePage (FPC >=3.0.0 only). This is the codepage
895 >    id that corresponds to the DefaultCharSetName.
896 >
897 > IBX Change Log  version                          (1.4-0) Mon, 15 Feb 2016 14:44:24 +0000
898 >
899 > 1. Unix: If Firebird Embedded Server shared object is loaded and a local database
900 >   path is given and database attach fails due to access permission issues on the
901 >   temp directory or security database, then the attach is retried with "localhost:"
902 >   prefixing the databasename. This should avoid problems when the database has to
903 >   be accessed by a local (e.g. classic) server and libfbembed is used.
904 >
905 > 2. Windows: revised search order for Firebird DLL:
906 >     i.   The Firebird Embedded Server in the application Directory.
907 >     ii.  If the FIREBIRD environment variable is set then the directory this
908 >          points to is searched for the FB Client DLL and then then underlying
909 >          "bin" directory.
910 >     iii. Registry Key HKEY_LOCAL_MACHINE\SOFTWARE\Firebird Project\Firebird Server\Instances
911 >          is used to locate the Firebird installation directory and the underlying
912 >          "bin" directory is searched for the FB Client DLL.
913 >     iv.  The Default installation directories C:\Program Files\Firebird\Firebird_2_x
914 >          are searched for the FB Client DLL.
915 >     v.   The PATH Environment variable is used to search for the FB Client DLL.
916 >     vi.  Finally the  PATH Environment variable is used to search for IBASE.DLL.
917 >
918 > 3. New Component: TIBXScript. This is an ISQL compatible SQL script execution engine.
919 >   See doc/readme.scriptengine and example applications.
920 >
921 > 4. New Component: TIBlocalDBSupport. This is a TIBDatabase support component intended to
922 >   simplify the use of the embedded firebird server on both Linux and Windows platforms.
923 >   See dpc/readme.localdatabase and example applications.
924 >
925 > 5. IBDynamicGrid: Reordering on column header click should now also work for
926 >   dynamic columns.
927 >
928 > 6. ISQLMonitor: (Windows only). Mutex added to TMultilockGate to avoid race condition
929 >   between incrementing/decrementing the lock count and signalling the event.
930 >
931 > IBX Change Log  version           (1.3-2) Tue, 26 Jan 2016 14:39:54 +0000
932 >
933 > 1.3.2 was never formally released and only made available as beta copies.
934 >
935 > 1. DBControlGrid,IBDynamicGrid: Ignore down arrow and up arrow in TCustomMemo
936 >
937 > 2. IBDynamicGrid: Now deals correctly with a single column grid which has no indicator and autosize column
938 >
939 > 3. IBLookupComboEditBox: reset timer on each key press - avoids timer going off too early
940 >
941 > 4. IBDynamicGrid: Call event OnUpdateSortOrder even when aliasname not found in dataset
942 >   i.e. when it is a calculated field
943 >
944 > 5. IBDynamicGrid: Fix problem selecting a different row when expanded row at end of grid.
945 >   This problem was due to a race condition between recalculating row heights and
946 >   determining which row was selected by the mouse click. The row height calculation
947 >   is now deferred by an extra trip round the message loop allowing the row to
948 >   be always calculated on the current grid layout rather than risking it being
949 >   calculated on the grid layout after the expanded row has been shrunk.
950 >
951 > 6. IBLookupComboEditBox: avoid race condition between cm_killfocus and cm_exit on
952 >   Windows.
953 >
954 > 7. TIBStringField: Now has two new public properties: CharacterSetName: string and CharacterSetSize: integer;
955 >   These properties allow the (Firebird) character set name for the field and the max number of bytes per character
956 >   to be determined at runtime. See doc/readme.charactersets.html.
957 >
958 > 8. TIBWideStringField: This is a new field type with the same additional public properties as above and subclassed from
959 >   TWideStringField. This field type is used with the character size reported by Firebird is two. See doc/readme.charactersets.html.
960 >
961 > 9. TIBMemoField and TIBWideMemoField: new field types with the same additional public properties as above and subclassed from
962 >   TMemoField and TWideMemoField respectively. These field types are used with Blob subtype 1 and a characterset size of
963 >   1, 3 or 4 (TIBMemoField) or 2 (TIBWideMemoField). See doc/readme.charactersets.html.
964 >
965 >   Both also have a new published property "DisplayTextAsClassName". If false (default) the displaytext is generated
966 >   from the blob text by truncating the string to the displaywidth (in characters not bytes). A displaywidth of zero
967 >   implies no truncation.
968 >
969 > 10. IBLookupComboEditBox: Force autocomplete when EditingDone called and timer active.
970 >
971 > 11. IBDynamicGrid: Call DataSet.Append when entering edit mode and dataset empty and not in insert state
972 >   (avoids "Not in Edit Mode" error).
973 >
974 > 12. IBDynamicGrid: Correctly resize grid when one column width plus indicator.
975 >
976 > 13. IBDynamicGrid: Ensure Editor Panel has focus when shown - avoids Windows API calling
977 >    DBGrid.DoExit on subsequent mouse click (e.g. on child control such as a tabbed page control.
978 >
979 > 14. IBDynamicGrid: ignore up, down tab and return when editorpanel open and focus in a TCustomGrid descendent.
980 >
981 > 15. DBControlGrid: Stop flashing grid when dataset closed and then re-opened while DisabledControls
982 >
983 > 16. IBQuery: Bug fixed that prevented SQL being set programmatically once the Parser had been invoked.
984 >
985 > 17. IBCustomDataSet: On close, parser is now freed and Select SQL reverts to value before DataSet Opened.
986 >
987 > IBX Change Log  version        (1.3-1) Sat, 18 Jul 2015 13:30:50 +0100
988 >
989 > 1.   OnCloseUp Event Handler added to TDBLookupProperties
990 >
991 > 2.   IBDynamicGrid: Call to OnEditorPanelHide is now last editor hide action - avoids
992 >     problem with row size when exception is called.
993 >
994 > 3.   IBLookupComboEditBox: Force pending autocomplete on combobox exit.
995 >
996 > 4.   IBDynamicGrid and DBControlGrid: Keyhandler now ignores up, down, escape and return keys if
997 >     in a TCustomComboBox and ignores return key if in a TCustomMemo
998 >
999 > 5.   IBLookupComboEditBox: Ensure that KeyValue is set correctly when full text
1000 >     keyed in i.e. when autocomplete not performed
1001 >
1002 > 6.   Cleanup of "Uses" clauses and add console mode support. IBX should now support
1003 >     console mode applications with all LCL required functions (builtin dialogs and
1004 >     cursor management) centralised in the  IBDialogs unit. As long as "IBDialogs" is
1005 >     not included in your project, IBX should compile and link with a console mode program.
1006 >     See consolemode example and its "readme"for further guidence. DO NOT add the ibexpress package to a
1007 >     console mode application or the IDE will automatically assume that your
1008 >     application is GUI based. Instead, you should include the ibexpressconsolemode package.
1009 >
1010 >     IMPORTANT NOTE: IBDialogs must be included in GUI applications in order
1011 >     to use the built in dialogs and cursor management. IBDialogs is
1012 >     included by default if "ibexpress" is in your project source's "uses" clause.
1013 >     This should be the case for all projects created through the IDE. This is why
1014 >     you do not want to add the ibexpress package to console mode applications. The
1015 >     ibexpressconsolemode package has been created to allow console mode programs
1016 >     to avoid adding LCL dependencies when using IBX, while still having the
1017 >     unit search paths set up correctly.
1018 >
1019 >     Existing users should check to ensure that the "ibexpress" unit is included in
1020 >     each project's source file (*.lpr).
1021 >
1022 >     You may find that in order for the IDE to recognise that ibexpressconsolemode
1023 >     exists, you have to first open the package in the IDE and then close it. This
1024 >     adds it to the most recently accessed packages list. To make it permanently
1025 >     available, add the package name to lazarus' staticpackages.inc file.
1026 >
1027 >         Thanks to Julio Jiménez for suggesting support of console mode.
1028 >
1029 > 7.   SQL Parser can now accept quoted strings that include new lines
1030 >
1031 > 8.   IBDynamicGrid: Lookup Cell Editor - the cursor is now positioned at end
1032 >     of text on start of edit. This is particularly useful when tabbing to a
1033 >     column and then inserting text.
1034 >
1035 > 9.   New Examples provided for IB Services and ISQLMonitor.
1036 >
1037 > 10. Fix error when writing to blob streams that recorded only the last buffer
1038 >    write in the blob stream. In most cases, this did not cause a problem as the
1039 >    IB Blob Stream is written in a single write. However, with the TDBImage, write
1040 >    of a graphic type prefix was lost which caused a problem when the image could
1041 >        not be automatically recognised.
1042 >
1043 > 11. Improve generation of random cursor names in TIBSQL - avoid risk of "cursor
1044 >    already open" errors due to random numbers used for the cursor name being identical.
1045 >
1046 > 12. IBTable: corrected error that could result in an "Index out of bounds" error
1047 >    when opening the table and the Primary Key is the last or only column in the
1048 >    table. Thanks to Rick Hoover for the fix.
1049 >
1050 > 13. Fix TIBDatabase initialisation of lc_ctype under unix. Set to "UTF8" instead
1051 >    of "UTF-8", and update list of available database character sets. Existing
1052 >    users should check the current lc_ctype setting in their applications.
1053 >
1054 > IBX Change Log  version  (1.2-4) Sat, 09 May 2015 12:38:29 +0100
1055 >
1056 > 1.  Firebird Services: avoid List Index error when opening a service with an
1057 >    empty Params property.
1058 >
1059 > 2.  IBControls: Fix problem with new link mechanism introduced in 1.2.3.
1060 >    Link now set up in Loaded method - avoids occasional failure to apply
1061 >    SQL markup on initial open.
1062 >
1063 > 3.  "Employees" example performance improvements when scrolling.
1064 >
1065 > 4.  DBControlGrid: Correctly handle edit panel removal when panel is child control of a
1066 >    TFrame. Force recaching of selected frame to avoid GTK race (results in a
1067 >    random image cached).
1068 >
1069 > 5.  DBControlGrid: Should now react to changes in panel height at run time.
1070 >
1071 > 6.  IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid  
1072 >    even when further rows exist.
1073 >
1074 > 7.  DBControlGrid: DefaultRowHeight is no longer a published property as it should
1075 >    always be derived from panel height and setting this property can cause confusion.
1076 >    Note for existing projects: to avoid a missing property error at run time,
1077 >    each form using the DBControlGrid must be opened, updated and saved in the IDE
1078 >    in order to remove the property value from the lfm.
1079 >
1080 >
1081 > IBX Change Log  version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
1082 >
1083 > 1.  TIBStoredProc. Prepare now called by ParamByName to avoid need to always
1084 >    call Prepare before setting parameter values.
1085 >
1086 > 2.  Error message on ParamByName (all cases) not found now includes name of missing parameter.
1087 >
1088 > 3.  Code tidyup and more robust handling of dsql information result vector.
1089 >
1090 > 4.  Support for centralised handling of transaction status changes. TIBTransaction
1091 >    has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
1092 >    and "AfterExecQuery". The first three are called after the same event is called
1093 >    for an IBCustomDataSet descendent using the Transaction. The fourth is called
1094 >    after a call to TIBSQL.ExecQuery, again using this transaction. These new events
1095 >    enable monitoring of transaction status changes for a given transaction to be
1096 >    handled in a single place. For example, when a change to the dataset occurs
1097 >    an indicator can be set that shows the user that in order to save changes,
1098 >    the transaction should be committed.  Rather than doing this per dataset, this
1099 >    can now be done per transaction.
1100 >
1101 > 5.  TDataSet.CheckBrowseMode automatically posts changes to the current row when
1102 >    the dataset is scrolled. However, any changes to the current row are, by default,
1103 >    discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
1104 >    have a new property "DataSetCloseAction" that adds automatic posting of changes
1105 >    on dataset close. If this property is set to dcDiscardChanges (default) then the
1106 >    behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
1107 >    then IBX will attempt to post any unsaved changes before the dataset is closed
1108 >    (and after the BeforeClose event handler is called). The exception is when the
1109 >    dataset is being closed as a result of a transaction rollback. In this case,
1110 >    no action is taken and any unsaved  changes are discarded. This avoids both
1111 >    unnecessary overhead and the risk that a validation error may occur in the Post
1112 >    raising an exception and thereby preventing a rollback.
1113 >
1114 > 6.  String Field sizes and Display Widths should now be correct for multi-byte character sets.
1115 >    In earlier versions, the Display Width was set to the maximum byte width rather than the character
1116 >    width. Display Widths are now corrected by dividing by the max byte width per character.
1117 >    For UTF8 character sets, the byte width is four and hence the Display Width will be
1118 >    the byte width divided by 4. The byte width of each character set is determined
1119 >    dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
1120 >    system table. (see also http://bugs.freepascal.org/view.php?id=27766).
1121 >
1122 > 7.  SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
1123 >
1124 > 8.  IBLookupComboEditBox: List should now always be restored to full list when the
1125 >    control loses focus. Default Key press default interval reduced to 200ms.
1126 >
1127 > 9.  DBControlGrid: Ensure that selection is changed to newly appended row, even
1128 >    when dataset rows are less than visible rows.
1129 >
1130 > 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
1131 >    does not exist or DataSet is empty. More responsive on dataset open. New event
1132 >    OnRestorePosition. Column sort disabled if no header row.
1133 >
1134 > 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
1135 >    while dataset state is dsInsert. Avoids posting errors.
1136 >
1137 > 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
1138 >    avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
1139 >
1140 > 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
1141 >
1142 > 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
1143 >    to solve a specific problem. That is when the dataset cursor is moved (e.g. by
1144 >    a grid mouse click and the current row is being edited or inserted. In this case, TDataset
1145 >    always "posts" the current record regardless or whether or not it may be more appropriate
1146 >    to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
1147 >    "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
1148 >    as the first action of the "Post" method and allows the handler to convert the Post
1149 >    into a Cancel if that is the appropriate action on moving to a different row. This is
1150 >    achieved by returning with "CancelPost" argument set to true. Note that an exception could be
1151 >    raised here, but it may still be more appropriate to validate a post and signal
1152 >    a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
1153 >
1154 > 15. On Unix derived systems, the Firebird library name can now be given as a colon
1155 >    separated list. Each library name on the list is tried in turn, in left to right
1156 >    order with the first found being used as the firebird library. By default, on Linux,
1157 >    the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
1158 >    overidden by the FBLIB environment variable or the OnGetLibraryName function.
1159 >
1160 >    Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
1161 >    then it will still attempt to access the database via the Firebird Server and will
1162 >    require a username and password. If only the pathname is given, then the username
1163 >    and password should be omitted and the unix file permissions are used to grant
1164 >    access.
1165 >
1166 > IBX Change Log  version  (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
1167 >
1168 > 1.  A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
1169 >    rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
1170 >    that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
1171 >    corresponds to a row of the linked DataSource. Any data aware control on the
1172 >    replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
1173 >
1174 > 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
1175 >   When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
1176 >   takes place during database access. This may be useful when there are performance issues with
1177 >   the change of cursor. Setting the property to false suppresses the change of cursor.
1178 >
1179 > 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
1180 >   and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
1181 >   Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
1182 >   making all changes permanent immediately rather than when the transaction is explicitly
1183 >   committed.
1184 >
1185 > 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
1186 >   using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
1187 >
1188 > IBX Change Log  version      (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
1189 >
1190 > Development version only.
1191 >
1192 > IBX Change Log  version   (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
1193  
1194   1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
1195     This is typically used during an "OnBeforeOpen" event handler to manipulate the
# Line 16 | Line 1207 | IBX Change Log  version
1207     TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
1208     of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
1209     to revise the available list and restrict it to items that are prefixed by the
1210 <   typed text (either case sensitive or case insenstive). Autoinsert allows a
1210 >   typed text (either case sensitive or case insensitive). Autoinsert allows a
1211     newly typed entry to be added to the list dataset and included in the available
1212     list items.
1213  
# Line 58 | Line 1249 | IBX Change Log  version
1249   8. Three new examples illustrate the use of the new IB Controls
1250  
1251  
1252 < IBX Change Log  version                      (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1252 > IBX Change Log  version  (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
1253  
1254   1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
1255     setting performance. See "readme.field+param.names in the doc folder.(Thanks to

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