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Revision 19 by tony, Mon Jul 7 13:00:15 2014 UTC vs.
Revision 29 by tony, Sat May 9 11:37:49 2015 UTC

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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

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