--- ibx/trunk/changelog 2018/01/18 14:37:35 106 +++ ibx/trunk/changelog 2018/01/22 16:21:31 126 @@ -1,32 +1,88 @@ -IBX Change Log version (2.1-1) Fri, 12 Jan 2018 10:13:29 +0000 +IBX Change Log version (2.2-0) Mon, 22 Jan 2018 14:21:12 +0000 -1. IBExtract: Identity columns - add addition check for null column for generator name. +1. IBExtract: Identity columns - add additional check for null column for generator name. 2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses. The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further - information). Values returned as a result of executing an Insert or Update statement - replace existing values in the current row for each corresponding column. + information). However, this is also a very useful mechanism for returning updated computed by + column values. Values returned as a result of executing an Insert or Update statement + replace existing values in the current row for each corresponding column. + + Previously, if a dataset's select query included read only (computed by) fields then + an automatic row refresh was performed after an insert or update query had been processed, + irrespective of the setting of the "ForcedUpdates" property. This has changed such + that an automatic refresh is no longer performed if an insert or update query contains + a returning clause that updates one or more fields on the current row. A full row + refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any + field values and the select query contains read only fields. Use of Insert/update + returning should be significantly more efficient than executing a refresh query. + + This behaviour change is intended to be backwards compatible and there should be no need to change + existing programs, other than to improve performance by using the new capability. + +3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as + they are called when the dataset row is being deleted, there is no value in + updating the current record from the query result. Instead, a new event handler + "OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and + an OnDeleteReturning event handler is provided then it is called with the IResults returned + by the query. The event handler can then interrogate the query results and + perform whatever action is necessary. For example to confirm, to the user, + the deletion of a row with the returned values. + +4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for + any Computed By or Identity Columns. The IBTables example has been updated to + illustrate the computation of the employee Full Name on update. -3. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List. +5. TIBTable: The GeneratorField property is now published. + +6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List. When InsertSQL is generated, the Identity columns are not included in the list of values to be inserted. A RETURNING clause is added to the insert statement to return the value of each Identity column after the insert is executed. -4. TIBGenerator: small performance improvement by not preparing query each time - a new number is generated. +7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause. + Similarly Insert Property Editor now generates Insert SQL with Computed By fields in + Insert..Returning clause. -5. TIBSQL: Free resources when transaction changed. +8. TIBGenerator: small performance improvement by not preparing query each time + a new value is generated. -6. Property editor will now sync table name to a System Table when "Include System - Tables" is selected and the query is for a System Table. +9. TIBSQL: Free resources when transaction changed - ensures new transaction is used. -7. Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause. - Similarly Insert Property Editor now generates Insert SQL with Computed By fields in - Insert..Returning clause. +10. Property editors will now sync table name to a System Table when "Include System + Tables" is selected and the query is for a System Table. + +11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field + values are no longer converted to milliseconds from TDateTime and then back again + to TDateTime (the conversion to milliseconds is the default TDataset approach). + +12. Property Editors handling of Stored Procedures. + * Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and + which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select + query). + * Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2). + +13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName + can be used to select a package. If non-empty, the stored procedure name is + expected to be a stored procedure defined in the specified package and the + generated SQL will be as required for a stored procedure located in a package. + +14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include + a "Package Name" drop down box to allow selection of a Firebird 3 Package from + which a stored procedure can be selected. With no package name selected, non-package + stored procedures are listed. + +15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting + for password on reconnect. + +16. IBDatabase: use IAttachment for connection default character set id, code page + and character set name. + +17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise + DB info lookups" + +18. IBExtract: now supports DDL Triggers. -8. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field - values are no longer converted to milliseconds from TDateTime and then back again - the TDateTime (the TDataset approach). IBX Change Log version (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000