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Revision 90 by tony, Mon Jan 1 11:31:34 2018 UTC vs.
Revision 139 by tony, Wed Jan 24 16:16:29 2018 UTC

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1	+	IBX Change Log  version                                             (2.2-0) Tue, 23 Jan 2018 11:23:09 +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	+	20. IBUpdate: Ignore non-data (e.g. calculated) fields when assembling list of input
89	+	parameters. This stops an exception being raised when the field cannot be
90	+	located in the record buffer.
91	+
92	+
93		IBX Change Log  version                            (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000
94
95		1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf

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