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IBX Change Log version (2.0.3) tba, 24 Feb 2017 12:17:53 +0000 |
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IBX Change Log version (2.2-0) Mon, 22 Jan 2018 14:21:12 +0000 |
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1. IBExtract: Identity columns - add additional check for null column for generator name. |
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2. IBCustomDataSet: Insert and Modify (Update) queries now recognise and process SQL RETURNING clauses. |
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The main use for this is for Firebird 3 Identity columns (see IBXDocumentation 6.6.8 for further |
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information). However, this is also a very useful mechanism for returning updated computed by |
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column values. Values returned as a result of executing an Insert or Update statement |
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replace existing values in the current row for each corresponding column. |
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Previously, if a dataset's select query included read only (computed by) fields then |
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an automatic row refresh was performed after an insert or update query had been processed, |
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irrespective of the setting of the "ForcedUpdates" property. This has changed such |
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that an automatic refresh is no longer performed if an insert or update query contains |
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a returning clause that updates one or more fields on the current row. A full row |
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refresh is only performed if (a) ForcedRefresh is true or (b) the query does not return any |
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field values and the select query contains read only fields. Use of Insert/update |
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returning should be significantly more efficient than executing a refresh query. |
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This behaviour change is intended to be backwards compatible and there should be no need to change |
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existing programs, other than to improve performance by using the new capability. |
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3. IBCustomDataSet: DELETE...RETURNING queries are now also recognised. However, as |
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they are called when the dataset row is being deleted, there is no value in |
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updating the current record from the query result. Instead, a new event handler |
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"OnDeleteReturning" is provided. If a DELETE...RETURNING query is execute and |
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an OnDeleteReturning event handler is provided then it is called with the IResults returned |
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by the query. The event handler can then interrogate the query results and |
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perform whatever action is necessary. For example to confirm, to the user, |
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the deletion of a row with the returned values. |
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4. TIBTable: generated Insert and Update SQL now include a RETURNING clause for |
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any Computed By or Identity Columns. The IBTables example has been updated to |
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illustrate the computation of the employee Full Name on update. |
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5. TIBTable: The GeneratorField property is now published. |
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6. The InsertSQL property editor now shows Firebird 3 Identity columns separate from the Field List. |
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When InsertSQL is generated, the Identity columns are not included in the list of values to |
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be inserted. A RETURNING clause is added to the insert statement to return the value of |
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each Identity column after the insert is executed. |
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7. The Modify Property Editor now generates Update SQL with Computed By fields in Update..Returning clause. |
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Similarly Insert Property Editor now generates Insert SQL with Computed By fields in |
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Insert..Returning clause. |
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8. TIBGenerator: small performance improvement by not preparing query each time |
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a new value is generated. |
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9. TIBSQL: Free resources when transaction changed - ensures new transaction is used. |
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10. Property editors will now sync table name to a System Table when "Include System |
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Tables" is selected and the query is for a System Table. |
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11. Minor Performance improvement to handling of Date/Time types in IBX datasets. Field |
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values are no longer converted to milliseconds from TDateTime and then back again |
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to TDateTime (the conversion to milliseconds is the default TDataset approach). |
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12. Property Editors handling of Stored Procedures. |
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* Select and Refresh: only show a list of stored procedures that return multiple rows (proc type 1) and |
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which have a non-empty list of output parameters (i.e. stored procedures that may be used in a select |
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query). |
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* Modify and Insert: only show a list of stored procedures that return at most a singleton row (proc type 2). |
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13. IBStoredProc: Now supports Firebird 3 Package Names. A new published property PackageName |
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can be used to select a package. If non-empty, the stored procedure name is |
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expected to be a stored procedure defined in the specified package and the |
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generated SQL will be as required for a stored procedure located in a package. |
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14. Select, Refresh, Insert, Modify, Delete and TIBSQL SQL Property Editors now include |
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a "Package Name" drop down box to allow selection of a Firebird 3 Package from |
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which a stored procedure can be selected. With no package name selected, non-package |
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stored procedures are listed. |
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15. TIBXScript: turn off database login prompt when reconnecting - this avoids prompting |
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for password on reconnect. |
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16. IBDatabase: use IAttachment for connection default character set id, code page |
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and character set name. |
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17. TIBDatabaseInfo: cache ODS Version information on first request in order to minimise |
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DB info lookups" |
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18. IBExtract: now supports DDL Triggers. |
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IBX Change Log version (2.1-0) Fri, 15 Dec 2017 12:20:11 +0000 |
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1. IBCustomDataset: Minor change of PChar to PByte for compatibility with fbintf |
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changes. |
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screen centre. Previously some were "poDesigned" which may be inappropriate |
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for multi monitor desktops. |
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10. TIBTreeView.FindNode: protect against error if zero length path or empty tree node. |
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11. TIBTransaction: On Force Disconnect do not raise an exception when problem ending |
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a transaction and always reset the object. |
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12. TIBQuery tidyup: remove unnecessary call to GetAffectedRows. |
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13. TIBXScript: Allow for override of database filename in Create Database statements. |
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14. IBLocaldb: Support initialisation of the database from an SQL script in addition |
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to a gbak format archive. |
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15. IBLocaldb: fix problem that stopped the OnSharedDataDir event from being recognised. |
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16. IBLocaldb: Drop database if error creating an empty database. |
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17. TIBTreeView: improve performance when selecting node - avoid refreshing dataset |
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unless selected node not in current dataset. |
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18. IBServices: SetDBParams method moved from TCustomIBLocalDBSupport (in IBLocalDB package) |
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to TIBCustomService, and IBlocalDB code tidy up. |
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19. IBTreeView: Initialise TIBTreeNode KeyValue to null to avoid unpredictable |
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behaviour due to uninitialised variable. |
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20. IBServices: Correct encoding of isc_spb_prp_write_mode in TIBConfigService from |
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integer to byte. Ditto isc_spb_prp_reserve_space and isc_spb_prp_access_mode. |
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21. IBSQL: When Database changed ensure that all resources are freed. |
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22. IBCustomDataset: When database changed ensure that queries an unprepared. |
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23. SQL Property Editors now use SynEdit with SQL Highlighter. New features include: |
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* Line Wrap on SQL Token boundaries (on user command) |
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* auto-complete table names in drop down list of table names |
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* Double click on tablename or field name adds to SQL text |
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24. IBDataOutput: print statistics using float (%f) format instead of decimal (%d). |
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25. IBTreeView: Call to FindNode: param type change from "array of Variant" to |
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TVariantArray. Seems to avoid memory corruption in Windows (probably a |
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workaround for a problem in fpc 3.0.4 win64). |
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26. IBDatabaseInfo: Code tidy up. Add check for database not assigned or not open. |
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27. IBDatabaseInfo: Remove memory leak when accessing database operation counts. |
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IBX Change Log version (2.0-2) Fri, 24 Feb 2017 12:17:53 +0000 |
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1. TIBDatabase.CreateDatabase: extract full DB Name from SQL using reg ex in order to |
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that BindFields is called when the query is next activated. Avoids FieldName |
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not found error. |
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7. IBUpdate: This is a new IBX component similar to TIBUpdateSQL. It is more general |
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purpose and allows the programmer to define any action they want for Update, Insert |
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or Delete. This may be complex SQL (similar to a Trigger), application specific |
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filtering of updates, or use of statements such as Grant or Revoke instead of |
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normal DML. See User Manual for more information. |
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IBX Change Log version (2.0-1) Mon, 09 Jan 2017 15:31:49 +0000 |
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1. TIBEvents: Fix uninitialised variable that could result in lost events. |
