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Revision 127 by tony, Mon Jan 22 16:21:34 2018 UTC

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1 < IBX Change Log  version                                     (1.4-2) Sat, 16 Jul 2016 13:25:48 +0100
1 > IBX Change Log  version                                            (2.2-0) Mon, 22 Jan 2018 14:21:12 +0000
2 >
3 > 1. IBExtract: Identity columns - add additional check for null column for generator name.
4 >
5 > 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses.
6 >   The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further
7 >   information). However, this is also a very useful mechanism for returning updated computed by
8 >   column values. Values returned as a result of executing an Insert or Update statement
9 >   replace existing values in the current row for each corresponding column.
10 >
11 >   Previously, if a dataset's select query included read only (computed by) fields then
12 >   an automatic row refresh was performed after an insert or update query had been processed,
13 >   irrespective of the setting of the "ForcedUpdates" property. This has changed such
14 >   that an automatic refresh is no longer performed if an insert or update query contains
15 >   a returning clause that updates one or more fields on the current row. A full row
16 >   refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any
17 >   field values and the select query contains read only fields. Use of Insert/update
18 >   returning should be significantly more efficient than executing a refresh query.
19 >
20 >   This behaviour change is intended to be backwards compatible and there should be no need to change
21 >   existing programs, other than to improve performance by using the new capability.
22 >
23 > 3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as
24 >   they are called when the dataset row is being deleted, there is no value in
25 >   updating the current record from the query result. Instead, a new event handler
26 >   "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and
27 >   an OnDeleteReturning event handler is provided then it is called with the IResults returned
28 >   by the query. The event handler can then interrogate the query results and
29 >   perform whatever action is necessary. For example to confirm, to the user,
30 >   the deletion of a row with the returned values.
31 >
32 > 4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for
33 >   any Computed By or Identity Columns. The IBTables example has been updated to
34 >   illustrate the computation of the employee Full Name on update.
35 >
36 > 5. TIBTable: The GeneratorField property is now published.
37 >
38 > 6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List.
39 >   When InsertSQL is generated, the Identity columns are not included in the list of values to
40 >   be inserted. A RETURNING clause is added to the insert statement to return the value of
41 >   each Identity column after the insert is executed.
42 >
43 > 7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause.
44 >   Similarly Insert Property Editor now generates Insert SQL with Computed By fields in
45 >   Insert..Returning clause.
46 >
47 > 8. TIBGenerator: small performance improvement by not preparing query each time
48 >   a new value is generated.
49 >
50 > 9. TIBSQL: Free resources when transaction changed - ensures new transaction is used.
51 >
52 > 10. Property editors will now sync table name to a System Table when "Include System
53 >    Tables" is selected and the query is for a System Table.
54 >
55 > 11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field
56 >    values are no longer converted to milliseconds from TDateTime and then back again
57 >    to TDateTime (the conversion to milliseconds is the default TDataset approach).
58 >
59 > 12. Property Editors handling of Stored Procedures.
60 >    * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and
61 >      which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select
62 >      query).
63 >    * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2).
64 >
65 > 13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName
66 >    can be used to select a package. If non-empty, the stored procedure name is
67 >    expected to be a stored procedure defined in the specified package and the
68 >    generated SQL will be as required for a stored procedure located in a package.
69 >
70 > 14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include
71 >    a "Package Name" drop down box to allow selection of a Firebird 3 Package from
72 >    which a stored procedure can be selected. With no package name selected, non-package
73 >    stored procedures are listed.
74 >
75 > 15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting
76 >    for password on reconnect.
77 >
78 > 16. IBDatabase: use IAttachment for connection default character set id, code page
79 >    and character set name.
80 >
81 > 17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise
82 >    DB info lookups"
83 >
84 > 18. IBExtract: now supports DDL Triggers.
85 >
86 > 19. Add a property Editor for TIBUpdate.RefreshSQL.
87 >
88 >
89 > IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
90 >
91 > 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
92 >   changes.
93 >
94 > 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
95 >   Bug could result in truncated multi-byte character set values.
96 >
97 > 3. Changes consequential on moving fbintf character set utility functions from
98 >   IFirebirdAPI to IAttachment.
99 >
100 > 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
101 >
102 > 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
103 >   results in autocomplete ignoring prefix text.
104 >
105 > 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
106 >   entering a new name into the text box.
107 >
108 > 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
109 >   Firebird rather than recomputing it.
110 >
111 > 8. Property Editor positioning tidy up: All IBX Property editors should now be
112 >   screen centre. Previously some were "poDesigned" which may be inappropriate
113 >   for multi monitor desktops.
114 >
115 > 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
116 >
117 > 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
118 >    a transaction and always reset the object.
119 >
120 > 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
121 >
122 > 13. TIBXScript: Allow for override of database filename in Create Database statements.
123 >
124 > 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
125 >    to a gbak format archive.
126 >
127 > 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
128 >
129 > 16. IBLocaldb: Drop database if error creating an empty database.
130 >
131 > 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
132 >    unless selected node not in current dataset.
133 >
134 > 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
135 >    to TIBCustomService, and IBlocalDB code tidy up.
136 >
137 > 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
138 >    behaviour due to uninitialised variable.
139 >
140 > 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
141 >    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
142 >
143 > 21. IBSQL: When Database changed ensure that all resources are freed.
144 >
145 > 22. IBCustomDataset: When database changed ensure that queries an unprepared.
146 >
147 > 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
148 >    * Line Wrap on SQL Token boundaries (on user command)
149 >    * auto-complete table names in drop down list of table names
150 >    * Double click on tablename or field name adds to SQL text
151 >
152 > 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
153 >
154 > 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
155 >    TVariantArray. Seems to avoid memory corruption in Windows (probably a
156 >    workaround for a problem in fpc 3.0.4 win64).
157 >
158 > 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
159 >
160 > 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
161 >
162 > IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
163 >
164 > 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
165 >   include remote system name.
166 >
167 > 2. TIBExtract: No longer include comment header and COMMIT statement for empty
168 >   tables when data included in output.
169 >
170 > 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
171 >   and timing information to be written to stdout. This may be used to locate
172 >   performance bottlenecks.
173 >
174 > 4. SQLParser: only call "OnChanging" event handler when value is different.
175 >
176 > 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
177 >
178 > 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
179 >   that BindFields is called when the query is next activated. Avoids FieldName
180 >   not found error.
181 >
182 > 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
183 >   purpose and allows the programmer to define any action they want for Update, Insert
184 >   or Delete. This may be complex SQL (similar to a Trigger), application specific
185 >   filtering of updates, or use of statements such as Grant or Revoke instead of
186 >   normal DML. See User Manual for more information.
187 >
188 > IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
189 >
190 > 1. TIBEvents: Fix uninitialised variable that could result in lost events.
191 >
192 > 2. TIBExtract: Added support for FB3 "USAGE" privilege.
193 >
194 > 3. TIBExtract: data formatted as Charset set "octets" is now output using
195 >   hexadecimal notation.
196 >
197 > 4. TIBExtract: Binary Blobs and array data can now be embedded in INSERT statements
198 >   using a simple XML format.
199 >
200 > 5. TIBExtract: extract of individual Triggers and Stored Procedures can now include
201 >   grants to these objects.
202 >
203 > 6. TIBExtract: Stored Procedures and Views output in dependency order to avoid
204 >   dependency problems restoring complex databases.
205 >
206 > 7. TIBXScript: This component has been restructured to allow for the processing of
207 >   embedded XML in INSERT statements and to support interactive sources in addition
208 >   to non-interactive data sources such as files.
209 >
210 > 8. TIBXScript: CREATE DATABASE, DROP DATABASE, CONNECT statements are now supported.
211 >
212 > 9. TIBXScript: ISQL compatiable Set statements are now supported:
213 >   SET SQL DIALECT
214 >   SET TERM
215 >   SET AUTODDL
216 >   SET BAIL
217 >   SET ECHO
218 >   SET COUNT
219 >   SET STATS
220 >   SET NAMES <character set>
221 >
222 > 10. IBVersion unit added to hold current IBX Version Number information.
223 >
224 > 11. TIBExtract: Use character rather than byte length for VarChar procedure arguments.,
225 >    and domain definitions.
226 >
227 > 12. TIBExtract: Triggers now use SQL2003 syntax and database and transaction triggers
228 >    fully supported.
229 >
230 > 13. TIBExtract: when a database dump includes data, the generator values are now also set.
231 >
232 > 14: IBSQLEdit: Unit LCLPlatformDef added to uses clauses for lazarus 1.7 and later.
233 >
234 > IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
235 >
236 > See also doc/IBX4LazarusGuide.pdf for important information on
237 > upgrading to IBX2.
238 >
239 > 1. Size property of TIBStringField is now the width in characters of the field
240 >   and not the byte length. This applies only to multi-byte character sets such
241 >   as UTF8. The original approach aligned with TStringField. However, the TStringField
242 >   code is not recognised as a bug and hence this change to align the behaviour.
243 >   The TStringField change is expected in fpc 3.2.0.
244 >
245 > 2. A new property AutoFieldSize: boolean has been added to TIBStringField. When
246 >   true (default) then Size property value saved in the lfm is ignored. Size is
247 >   always set from the dynamic information read from the database. It is unclear
248 >   why anyone would want to override this and set Size to false.
249 >
250 > 3. ibxscript: should now handle correctly a Case..End statement within a procedure
251 >   block.
252 >
253 > 4. IBDatabase: new property - CreateIfNotExists. If true and database does not
254 >   exist when an attempt is made to connect to it (run time only) then an attempt
255 >   is made to create the database.
256 >
257 > 5. IBDatabase: new event - OnCreateDatabase. This event is called after a database
258 >   has been successfully created as a result of a call to CreateDatabase or when
259 >   creating a database after it was found not to exist.
260 >
261 > 6.  DBControlGrid: a race condition could result in the wrong row image being
262 >    written to the cache. This has been avoided by a trip round the message
263 >    loop before rendering the row image.
264 >
265 > 7.  DBControlGrid: It is strongly recommended not to open the source DataSet for
266 >    a DBControlGrid during a Form's "OnShow" event handler. Under GTK2 this is
267 >    known to risk corrupt rendering of row images when the control is first
268 >    displayed. If necessary use "Application.QueueAsyncCall" to delay opening
269 >    of the dataset (see DBControlGrid examples) until the Form's Window has been created.
270 >
271 > 8.  DBControlGrid & IBDynamicGrid: Navigation keys should now work correctly with
272 >    a TDateEdit control located on an editor panel.
273 >
274 > 9.  TIBExtract: brought up-to-date plus many bug fixes.
275 >
276 > 10. DBControlGrid: Removed memory leak when updating rows.
277 >
278 > 11. TIBCMLocalDBSupport: fixed invalid free on upgrade.
279 >
280 > IBX Change Log  version                                           (1.4-3) Thu, 22 Sep 2016 18:10:15 +0100
281 >
282 > 1. IBCustomDataset: When calling SetCodePage, no longer request transliteration
283 >   when target codepage is CP_NONE. This is a workaround for
284 >   http://bugs.freepascal.org/view.php?id=30622.
285 >
286 > 2. DBLog option removed from TIBStatisticalService - not supported by server
287 >   since Firebird 1.5.
288 >
289 > 3. ibxscript: An error is no longer generated for "on commit preserve rows" or
290 >   similar.
291 >
292 > 4. IBCodePage: updated mapping between codepages and character id.
293 >
294 > 5. ftWideString and ftWideMemo withdrawn. There is no UTF16 character set in
295 >   Firebird. Character sets with a char width of two are not UTF16.
296 >
297 > 6. Strings received from the database are now always transliterated into UTF8
298 >   regardless of the database character set or connection character set. This
299 >   is for compatibility with the LCL.
300 >
301 > IBX Change Log  version  (1.4-2) Thu, 22 Sep 2016 15:25:27 +0100
302  
303   1. IBBlob: Defer reading of blob until read method called. This avoids having to
304     read in an entire blob just to get the size of the blob. General performance

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