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Revision: 29
Committed: Sat May 9 11:37:49 2015 UTC (8 years, 10 months ago) by tony
File size: 16019 byte(s)
Log Message:
Committing updates for Release R1-2-4

File Contents

# Content
1 IBX Change Log version (1.2-4) Sat, 09 May 2015 12:38:29 +0100
2
3 1. Firebird Services: avoid List Index error when opening a service with an
4 empty Params property.
5
6 2. IBControls: Fix problem with new link mechanism introduced in 1.2.3.
7 Link now set up in Loaded method - avoids occasional failure to apply
8 SQL markup on initial open.
9
10 3. "Employees" example performance improvements when scrolling.
11
12 4. DBControlGrid: Correctly handle edit panel removal when panel is child control of a
13 TFrame. Force recaching of selected frame to avoid GTK race (results in a
14 random image cached).
15
16 5. DBControlGrid: Should now react to changes in panel height at run time.
17
18 6. IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid
19 even when further rows exist.
20
21 7. DBControlGrid: DefaultRowHeight is no longer a published property as it should
22 always be derived from panel height and setting this property can cause confusion.
23 Note for existing projects: to avoid a missing property error at run time,
24 each form using the DBControlGrid must be opened, updated and saved in the IDE
25 in order to remove the property value from the lfm.
26
27
28 IBX Change Log version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100
29
30 1. TIBStoredProc. Prepare now called by ParamByName to avoid need to always
31 call Prepare before setting parameter values.
32
33 2. Error message on ParamByName (all cases) not found now includes name of missing parameter.
34
35 3. Code tidyup and more robust handling of dsql information result vector.
36
37 4. Support for centralised handling of transaction status changes. TIBTransaction
38 has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost"
39 and "AfterExecQuery". The first three are called after the same event is called
40 for an IBCustomDataSet descendent using the Transaction. The fourth is called
41 after a call to TIBSQL.ExecQuery, again using this transaction. These new events
42 enable monitoring of transaction status changes for a given transaction to be
43 handled in a single place. For example, when a change to the dataset occurs
44 an indicator can be set that shows the user that in order to save changes,
45 the transaction should be committed. Rather than doing this per dataset, this
46 can now be done per transaction.
47
48 5. TDataSet.CheckBrowseMode automatically posts changes to the current row when
49 the dataset is scrolled. However, any changes to the current row are, by default,
50 discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now
51 have a new property "DataSetCloseAction" that adds automatic posting of changes
52 on dataset close. If this property is set to dcDiscardChanges (default) then the
53 behaviour is unchanged from previous versions. if the value is set to dcSaveChanges
54 then IBX will attempt to post any unsaved changes before the dataset is closed
55 (and after the BeforeClose event handler is called). The exception is when the
56 dataset is being closed as a result of a transaction rollback. In this case,
57 no action is taken and any unsaved changes are discarded. This avoids both
58 unnecessary overhead and the risk that a validation error may occur in the Post
59 raising an exception and thereby preventing a rollback.
60
61 6. String Field sizes and Display Widths should now be correct for multi-byte character sets.
62 In earlier versions, the Display Width was set to the maximum byte width rather than the character
63 width. Display Widths are now corrected by dividing by the max byte width per character.
64 For UTF8 character sets, the byte width is four and hence the Display Width will be
65 the byte width divided by 4. The byte width of each character set is determined
66 dynamically when the database connection is estabished from the RDB$CHARACTER_SETS
67 system table. (see also http://bugs.freepascal.org/view.php?id=27766).
68
69 7. SQLParser will now correctly parse SQL Text which contains ':' within quoted string.
70
71 8. IBLookupComboEditBox: List should now always be restored to full list when the
72 control loses focus. Default Key press default interval reduced to 200ms.
73
74 9. DBControlGrid: Ensure that selection is changed to newly appended row, even
75 when dataset rows are less than visible rows.
76
77 10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource
78 does not exist or DataSet is empty. More responsive on dataset open. New event
79 OnRestorePosition. Column sort disabled if no header row.
80
81 11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset
82 while dataset state is dsInsert. Avoids posting errors.
83
84 12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to
85 avoid conflict with DisableControls/EnableControls with Master/Detail linked tables.
86
87 13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes.
88
89 14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced
90 to solve a specific problem. That is when the dataset cursor is moved (e.g. by
91 a grid mouse click and the current row is being edited or inserted. In this case, TDataset
92 always "posts" the current record regardless or whether or not it may be more appropriate
93 to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the
94 "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called
95 as the first action of the "Post" method and allows the handler to convert the Post
96 into a Cancel if that is the appropriate action on moving to a different row. This is
97 achieved by returning with "CancelPost" argument set to true. Note that an exception could be
98 raised here, but it may still be more appropriate to validate a post and signal
99 a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml)
100
101 15. On Unix derived systems, the Firebird library name can now be given as a colon
102 separated list. Each library name on the list is tried in turn, in left to right
103 order with the first found being used as the firebird library. By default, on Linux,
104 the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be
105 overidden by the FBLIB environment variable or the OnGetLibraryName function.
106
107 Note: when using the libfbembed.so, if you prefix the database name with "localhost:"
108 then it will still attempt to access the database via the Firebird Server and will
109 require a username and password. If only the pathname is given, then the username
110 and password should be omitted and the unix file permissions are used to grant
111 access.
112
113 IBX Change Log version (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000
114
115 1. A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike
116 rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid
117 that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row
118 corresponds to a row of the linked DataSource. Any data aware control on the
119 replicated (e.g.) TPanel will then appear to have the appropriate value for the row.
120
121 2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase.
122 When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change
123 takes place during database access. This may be useful when there are performance issues with
124 the change of cursor. Setting the property to false suppresses the change of cursor.
125
126 3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery
127 and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to
128 Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of
129 making all changes permanent immediately rather than when the transaction is explicitly
130 committed.
131
132 4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still
133 using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature.
134
135 IBX Change Log version (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000
136
137 Development version only.
138
139 IBX Change Log version (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000
140
141 1. An internal select SQL Parser is now available for TIBCustomDataset descendents.
142 This is typically used during an "OnBeforeOpen" event handler to manipulate the
143 "Where" and "Having" clauses to implement user specified filters of arbitrary
144 complexity.
145
146 2. A new Component Palette entry "Firebird Data Controls" is now available. This has
147 three new data aware controls dependent on IBX and which make use of the SQL Parser.
148 These are:
149
150 - TIBLookupComboEditBox
151 - TIBDynamicGrid
152 - TIBTreeview
153
154 TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete"
155 of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation
156 to revise the available list and restrict it to items that are prefixed by the
157 typed text (either case sensitive or case insensitive). Autoinsert allows a
158 newly typed entry to be added to the list dataset and included in the available
159 list items.
160
161 TIBDynamicGrid is a TDBGrid descendent that provides for:
162 - automatic resizing of selected columns to fill the available row length
163 - automatic positioning and sizing of a "totals" control, typically at the
164 column footer, on a per column basis.
165 - DataSet resorting on header row click, sorting the dataset by the selected column.
166 A second click on the same header cell reversed the sort order.
167 - Support for a "Panel Editor". That is on clicking the indicator column, the row
168 is automatically expanded and a panel superimposed on it. The panel can have any
169 number of child controls, typically data aware controls with the same datasource
170 as the grid allowing for editing of additional fields and more complex editors.
171 - Reselection of the same row following resorting.
172 - A new cell editor that provides the same functionality as TIBLookupComboEditBox.
173 Its properties are specified on a per column basis and allows for one or more
174 columns to have their values selected from a list provided by a dataset.
175 Autocomplete and autoinsert are also available. The existing picklist editor
176 is unaffected by the extension.
177
178 TIBTreeView is a data aware TCustomTreeView.
179
180 3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a
181 zero scale will no longer return an error. An Int64 will be returned instead.
182
183 4. TIBTransaction now has events for Before and After Transaction End and a new function
184 "GetEndAction" allowing the EndAction to be accessed by these event handlers.
185
186 5. TIBQuery can now handle correctly queries which contain the same keyword parameter
187 repeated multiple times.
188
189 6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error
190 check used to get in the way of using Stored Procedures, and "Update or Insert"
191 statements.
192
193 7. Insert, Modify and Delete property Editors now support Query Generation from
194 Stored Procedures.
195
196 8. Three new examples illustrate the use of the new IB Controls
197
198
199 IBX Change Log version (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100
200
201 1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter
202 setting performance. See "readme.field+param.names in the doc folder.(Thanks to
203 Gabor Boros for reporting this problem and for testing the improvements).
204
205 2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case.
206 See readme.field+param.names in the doc folder.
207
208 3. IBX SQL Editors will now automatically add double quotes around column names when the database
209 dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word.
210
211 4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc
212
213 5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once"
214 actions.
215
216 6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with
217 thanks to Yuriy Kopnin for pointing this out).
218
219 7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet.
220
221 8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types
222 for both fields and parameter setting.
223
224 9. Changes to the Select SQL in an IBCustomDataset descendent should now be
225 visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property.
226
227 10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test,
228 when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true.
229
230 11. TIBTable now has a property editor for "MasterFields"
231
232 12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the
233 GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters.
234
235 13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination
236 of settings is unrecognised. Selecting this radio button has no effect on the settings.
237
238
239 IBX Change Log version (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000
240
241 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.
242
243 IBX Change Log version (1.0-4) Thu, 28 Feb 2013 16:56:13 +0000
244
245 1. In a TIBCustomDataset descendent, a generator now only sets the value when
246 it is null. This allows for alternative user defined setting of the generator
247
248 Many thanks to Julio Jiménez for this fix
249
250 2. An Error Dialog is now displayed in the Lazarus IDE if IBX cannot find the Firebird Library
251 and suggests that the user may have forgotten to install it.
252
253 IBX Change Log version (1.0-3) Thu, 22 Nov 2012 22:53:39 +0000
254
255 1. Conditional compilation used to limit registration of TIntegerField to
256 Lazarus versions less than 1.1
257
258 2. When a database connection is created, character set is now by default set
259 to UTF8 (Unix) or to the current Windows code page (Windows) if in the range
260 1250 to 1254.
261
262
263 IBX Change Log version (1.0-2) Tue, 09 Oct 2012 09:10:30 +0100
264
265 1. TBookmark change conditional compile changed to > 2.6.2 to match expected availability of change.
266
267
268 IBX Change Log version (1.0-1) Sun, 05 Aug 2012 20:00:04 +0100
269
270 1. In IBCustomDataset. Changed CurBookmark from string to TBookmark for compiler versions > 2.6.0
271 Necessary because of TBookmark type and TDataSet.Bookmark property change in fpc 2.7.1
272
273 2. IBX now registers TIntegerField as a "No Icon" component. This may be removed if the fpc DB
274 package is changed to do this (which it should do).
275
276 IBX Change Log version (1.0-0) Sat, 28 Apr 2012 16:43:00 +0100
277
278 1. Add "if active then active := false" to TIBCustomDataset destructor. (Avoid error on database close).
279
280 2. Make use of $STATIC conditional in IBSQLMonitor (Needed for FPC 2.6.0 compliance)
281
282 3. Database Property Editor: Character Set drop down box now uses "OnChange" rather than "OnCloseUp" to react to changes
283
284 4. Property editors should now correctly resize.
285
286 5. In IBDatabaseEdit.TestClick, the LoginPrompt is now set to the state of the LoginPrompt Checkbox
287 (restored original functionality)
288
289 6. Under OSX, if IBX fails to load libfbclient.dylib, it will now try and load the firebird
290 library using the absolute path /Library/Frameworks/Firebird.framework/Firebird.