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Revision 47 by tony, Mon Jan 9 15:31:51 2017 UTC vs.
Revision 123 by tony, Mon Jan 22 14:22:04 2018 UTC

# Line 1 | Line 1
1 + IBX Change Log  version                                         (2.2-0) Sat, 20 Jan 2018 23:31:37 +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 +
87 + IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
88 +
89 + 1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf
90 +   changes.
91 +
92 + 2. IBCustomDataset: Fixed use of incorrect datasize in TIBStringField.SetAsString.
93 +   Bug could result in truncated multi-byte character set values.
94 +
95 + 3. Changes consequential on moving fbintf character set utility functions from
96 +   IFirebirdAPI to IAttachment.
97 +
98 + 4. Avoid "Object is nil" error when opening a database with DefaultSystemCodePage = true
99 +
100 + 5. IBLookupComboEditBox: avoid race condition when autocompleting text that occasionally
101 +   results in autocomplete ignoring prefix text.
102 +
103 + 6. IBLookupComboEditBox: Ensure that cursor is not reset to start of text when
104 +   entering a new name into the text box.
105 +
106 + 7. IBCustomDataset: ensure that TIBStringField uses the field size reported by
107 +   Firebird rather than recomputing it.
108 +
109 + 8. Property Editor positioning tidy up: All IBX Property editors should now be
110 +   screen centre. Previously some were "poDesigned" which may be inappropriate
111 +   for multi monitor desktops.
112 +
113 + 10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node.
114 +
115 + 11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending
116 +    a transaction and always reset the object.
117 +
118 + 12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows.
119 +
120 + 13. TIBXScript: Allow for override of database filename in Create Database statements.
121 +
122 + 14. IBLocaldb: Support initialisation of the database from an SQL script in addition
123 +    to a gbak format archive.
124 +
125 + 15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised.
126 +
127 + 16. IBLocaldb: Drop database if error creating an empty database.
128 +
129 + 17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset
130 +    unless selected node not in current dataset.
131 +
132 + 18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package)
133 +    to TIBCustomService, and IBlocalDB code tidy up.
134 +
135 + 19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable
136 +    behaviour due to uninitialised variable.
137 +
138 + 20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from
139 +    integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode.
140 +
141 + 21. IBSQL: When Database changed ensure that all resources are freed.
142 +
143 + 22. IBCustomDataset: When database changed ensure that queries an unprepared.
144 +
145 + 23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include:
146 +    * Line Wrap on SQL Token boundaries (on user command)
147 +    * auto-complete table names in drop down list of table names
148 +    * Double click on tablename or field name adds to SQL text
149 +
150 + 24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d).
151 +
152 + 25. IBTreeView: Call to FindNode: param type change from "array of Variant" to
153 +    TVariantArray. Seems to avoid memory corruption in Windows (probably a
154 +    workaround for a problem in fpc 3.0.4 win64).
155 +
156 + 26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open.
157 +
158 + 27. IBDatabaseInfo: Remove memory leak when accessing database operation counts.
159 +
160 + IBX Change Log  version                   (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000
161 +
162 + 1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to
163 +   include remote system name.
164 +
165 + 2. TIBExtract: No longer include comment header and COMMIT statement for empty
166 +   tables when data included in output.
167 +
168 + 3. Profiling: IBSQL now has conditional compilation flags to enable query performance
169 +   and timing information to be written to stdout. This may be used to locate
170 +   performance bottlenecks.
171 +
172 + 4. SQLParser: only call "OnChanging" event handler when value is different.
173 +
174 + 5. IBDynamicGrid: Update handling of navigation keys for a TDateEdit
175 +
176 + 6. IBCustomDataset: Set internalunprepared flag when transaction ends. This ensures
177 +   that BindFields is called when the query is next activated. Avoids FieldName
178 +   not found error.
179 +
180 + 7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general
181 +   purpose and allows the programmer to define any action they want for Update, Insert
182 +   or Delete. This may be complex SQL (similar to a Trigger), application specific
183 +   filtering of updates, or use of statements such as Grant or Revoke instead of
184 +   normal DML. See User Manual for more information.
185 +
186   IBX Change Log  version                  (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000
187  
188   1. TIBEvents: Fix uninitialised variable that could result in lost events.
# Line 46 | Line 231 | IBX Change Log  version
231  
232   IBX Change Log  version     (2.0-0) Tue, 06 Dec 2016 10:33:44 +0000
233  
234 < See also doc/readme.upgrade-4-x.to.2-0-0.xhtml for important information on
234 > See also doc/IBX4LazarusGuide.pdf for important information on
235   upgrading to IBX2.
236  
237   1. Size property of TIBStringField is now the width in characters of the field

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