--- ibx/trunk/changelog 2018/01/18 14:37:35 106 +++ ibx/trunk/changelog 2018/01/18 14:37:48 109 @@ -1,32 +1,71 @@ -IBX Change Log version (2.1-1) Fri, 12 Jan 2018 10:13:29 +0000 +IBX Change Log version (2.2-0) Tue, 16 Jan 2018 16:49:07 +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 excuting 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. 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. +4. TIBTable: The GeneratorField property is now published. + +5. 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. +6. 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. + +7. TIBGenerator: small performance improvement by not preparing query each time + a new value is generated. -5. TIBSQL: Free resources when transaction changed. +8. TIBSQL: Free resources when transaction changed - ensures new transaction is used. -6. Property editor will now sync table name to a System Table when "Include System +9. 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. -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. 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). + +11. 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). + +12. 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. + +13. 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. + +14. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting + for password on reconnect. -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