--- ibx/trunk/changelog 2013/12/28 19:22:24 17 +++ ibx/trunk/changelog 2015/05/09 11:37:49 29 @@ -1,3 +1,241 @@ +IBX Change Log version (1.2-4) Sat, 09 May 2015 12:38:29 +0100 + +1. Firebird Services: avoid List Index error when opening a service with an + empty Params property. + +2. IBControls: Fix problem with new link mechanism introduced in 1.2.3. + Link now set up in Loaded method - avoids occasional failure to apply + SQL markup on initial open. + +3. "Employees" example performance improvements when scrolling. + +4. DBControlGrid: Correctly handle edit panel removal when panel is child control of a + TFrame. Force recaching of selected frame to avoid GTK race (results in a + random image cached). + +5. DBControlGrid: Should now react to changes in panel height at run time. + +6. IBDynamicGrid: Redraws rows below on panel editor hide - avoids blank space at end of grid + even when further rows exist. + +7. DBControlGrid: DefaultRowHeight is no longer a published property as it should + always be derived from panel height and setting this property can cause confusion. + Note for existing projects: to avoid a missing property error at run time, + each form using the DBControlGrid must be opened, updated and saved in the IDE + in order to remove the property value from the lfm. + + +IBX Change Log version (1.2-3) Tue, 14 Apr 2015 14:11:17 +0100 + +1. TIBStoredProc. Prepare now called by ParamByName to avoid need to always + call Prepare before setting parameter values. + +2. Error message on ParamByName (all cases) not found now includes name of missing parameter. + +3. Code tidyup and more robust handling of dsql information result vector. + +4. Support for centralised handling of transaction status changes. TIBTransaction + has been given additional events "AfterEdit", "AfterInsert", "AfterDelete", "AfterPost" + and "AfterExecQuery". The first three are called after the same event is called + for an IBCustomDataSet descendent using the Transaction. The fourth is called + after a call to TIBSQL.ExecQuery, again using this transaction. These new events + enable monitoring of transaction status changes for a given transaction to be + handled in a single place. For example, when a change to the dataset occurs + an indicator can be set that shows the user that in order to save changes, + the transaction should be committed. Rather than doing this per dataset, this + can now be done per transaction. + +5. TDataSet.CheckBrowseMode automatically posts changes to the current row when + the dataset is scrolled. However, any changes to the current row are, by default, + discarded when the dataset is closed. TIBDataSet, TIBQuery and TIBTable now + have a new property "DataSetCloseAction" that adds automatic posting of changes + on dataset close. If this property is set to dcDiscardChanges (default) then the + behaviour is unchanged from previous versions. if the value is set to dcSaveChanges + then IBX will attempt to post any unsaved changes before the dataset is closed + (and after the BeforeClose event handler is called). The exception is when the + dataset is being closed as a result of a transaction rollback. In this case, + no action is taken and any unsaved changes are discarded. This avoids both + unnecessary overhead and the risk that a validation error may occur in the Post + raising an exception and thereby preventing a rollback. + +6. String Field sizes and Display Widths should now be correct for multi-byte character sets. + In earlier versions, the Display Width was set to the maximum byte width rather than the character + width. Display Widths are now corrected by dividing by the max byte width per character. + For UTF8 character sets, the byte width is four and hence the Display Width will be + the byte width divided by 4. The byte width of each character set is determined + dynamically when the database connection is estabished from the RDB$CHARACTER_SETS + system table. (see also http://bugs.freepascal.org/view.php?id=27766). + +7. SQLParser will now correctly parse SQL Text which contains ':' within quoted string. + +8. IBLookupComboEditBox: List should now always be restored to full list when the + control loses focus. Default Key press default interval reduced to 200ms. + +9. DBControlGrid: Ensure that selection is changed to newly appended row, even + when dataset rows are less than visible rows. + +10. IBDynamicGrid: Editor Panel is not shown on indicator click if Datasource + does not exist or DataSet is empty. More responsive on dataset open. New event + OnRestorePosition. Column sort disabled if no header row. + +11. IBTreeView: improved handling of response to "Add Node". Avoid scrolling dataset + while dataset state is dsInsert. Avoids posting errors. + +12. IBControls: New mechanism for distributing UpdateSQL and UpdateParams events. This is to + avoid conflict with DisableControls/EnableControls with Master/Detail linked tables. + +13. IBLookupComboEditBox: Now avoids SQL Errors when combo box text contains single quotes. + +14. TIBDataSet and TIBQuery: new Event - OnValidatePost. This event has been introduced + to solve a specific problem. That is when the dataset cursor is moved (e.g. by + a grid mouse click and the current row is being edited or inserted. In this case, TDataset + always "posts" the current record regardless or whether or not it may be more appropriate + to cancel any changes; the post occurs before the "BeforeScroll" event fires due to the way the + "MoveBy" function is implemented by TDataSet. The OnValidatePost event is called + as the first action of the "Post" method and allows the handler to convert the Post + into a Cancel if that is the appropriate action on moving to a different row. This is + achieved by returning with "CancelPost" argument set to true. Note that an exception could be + raised here, but it may still be more appropriate to validate a post and signal + a problem in the "BeforePost" event handler. See readme.automaticposts.xhtml) + +15. On Unix derived systems, the Firebird library name can now be given as a colon + separated list. Each library name on the list is tried in turn, in left to right + order with the first found being used as the firebird library. By default, on Linux, + the library name list is 'libfbembed.so.2.5:libfbembed.so.2.1:libfbclient.so.2'. This can be + overidden by the FBLIB environment variable or the OnGetLibraryName function. + + Note: when using the libfbembed.so, if you prefix the database name with "localhost:" + then it will still attempt to access the database via the Firebird Server and will + require a username and password. If only the pathname is given, then the username + and password should be omitted and the unix file permissions are used to grant + access. + +IBX Change Log version (1.2-2) Sat, 14 Mar 2015 11:35:04 +0000 + +1. A new IBControl - TDBControlGrid has been added. TDBControlGrid a lookalike + rather than a clone for the Delphi TDBCrtlGrid. TDBControlGrid is a single column grid + that replicates a TWinControl - typically a TPanel or a TFrame in each row. Each row + corresponds to a row of the linked DataSource. Any data aware control on the + replicated (e.g.) TPanel will then appear to have the appropriate value for the row. + +2. As suggested by Julio Jiménez, a new property "SQLHourGlass" has been added to TIBDatabase. + When set to false (default true), the Hour Glass cursor is supcpressed and no cursor change + takes place during database access. This may be useful when there are performance issues with + the change of cursor. Setting the property to false suppresses the change of cursor. + +3. As suggested by Julio Jiménez, a new property "AutoCommit" has been added to TIBDataSet, TIBQuery + and TIBTable. When set to acCommitRetaining (Default: acDisabled), a call is made to + Transaction.CommitRetaining immediately after every Post or Delete. This has the effect of + making all changes permanent immediately rather than when the transaction is explicitly + committed. + +4. Experimental support for the Firebird 3 SQL_BOOLEAN type has been added while still + using the legacy Firebird API. Thanks to Gabor Boros for helping to test this feature. + +IBX Change Log version (1.2-1) Fri, 13 Mar 2015 11:14:15 +0000 + +Development version only. + +IBX Change Log version (1.2-0) Thu, 26 Feb 2015 10:34:04 +0000 + +1. An internal select SQL Parser is now available for TIBCustomDataset descendents. + This is typically used during an "OnBeforeOpen" event handler to manipulate the + "Where" and "Having" clauses to implement user specified filters of arbitrary + complexity. + +2. A new Component Palette entry "Firebird Data Controls" is now available. This has + three new data aware controls dependent on IBX and which make use of the SQL Parser. + These are: + + - TIBLookupComboEditBox + - TIBDynamicGrid + - TIBTreeview + + TIBLookupComboEditBox is a TDBLookupComboBox descendent that implements "autocomplete" + of typed in text and "autoinsert" of new entries. Autocomplete uses SQL manipulation + to revise the available list and restrict it to items that are prefixed by the + typed text (either case sensitive or case insensitive). Autoinsert allows a + newly typed entry to be added to the list dataset and included in the available + list items. + + TIBDynamicGrid is a TDBGrid descendent that provides for: + - automatic resizing of selected columns to fill the available row length + - automatic positioning and sizing of a "totals" control, typically at the + column footer, on a per column basis. + - DataSet resorting on header row click, sorting the dataset by the selected column. + A second click on the same header cell reversed the sort order. + - Support for a "Panel Editor". That is on clicking the indicator column, the row + is automatically expanded and a panel superimposed on it. The panel can have any + number of child controls, typically data aware controls with the same datasource + as the grid allowing for editing of additional fields and more complex editors. + - Reselection of the same row following resorting. + - A new cell editor that provides the same functionality as TIBLookupComboEditBox. + Its properties are specified on a per column basis and allows for one or more + columns to have their values selected from a list provided by a dataset. + Autocomplete and autoinsert are also available. The existing picklist editor + is unaffected by the extension. + + TIBTreeView is a data aware TCustomTreeView. + +3. When getting a field value using FieldByName.AsVariant, an SQL_INT64 with a + zero scale will no longer return an error. An Int64 will be returned instead. + +4. TIBTransaction now has events for Before and After Transaction End and a new function + "GetEndAction" allowing the EndAction to be accessed by these event handlers. + +5. TIBQuery can now handle correctly queries which contain the same keyword parameter + repeated multiple times. + +6. TIBUpdateSQL will no longer return an error when "RowsAffected" is <> 1. This error + check used to get in the way of using Stored Procedures, and "Update or Insert" + statements. + +7. Insert, Modify and Delete property Editors now support Query Generation from + Stored Procedures. + +8. Three new examples illustrate the use of the new IB Controls + + +IBX Change Log version (1.1-0) Mon, 07 Jul 2014 14:01:07 +0100 + +1. TIBXSQLVAR code clean up and optimisation to improve client side "prepare" and parameter + setting performance. See "readme.field+param.names in the doc folder.(Thanks to + Gabor Boros for reporting this problem and for testing the improvements). + +2. IBX can now support dialect 3 quoted column names that contain spaces and which differ only in their case. + See readme.field+param.names in the doc folder. + +3. IBX SQL Editors will now automatically add double quotes around column names when the database + dialect is "3" and the column name contains spaces or is a Firebird 2.5 SQL Reserved Word. + +4. Param Type LargeInt now supported in TIBQuery and TIBStoredProc + +5. TIBSQL.ExecQuery retry on failure removed to avoid problems with "at most once" + actions. + +6. TIBTransaction.SetDefaultDatabase uses SetObjectProp instead of mis-using SetOrdProp (with + thanks to Yuriy Kopnin for pointing this out). + +7. GenerateParamName is now a published property of TIBSQL, TIBQuery and TIBDataSet. + +8. varWord, varShortInt and varInt64 added to TIBXSQLVAR.SetAsVariant and hence now available as variant types + for both fields and parameter setting. + +9. Changes to the Select SQL in an IBCustomDataset descendent should now be + visible in the Fields Editor immediately afterwards - rather than only after cycling the "active" property. + +10. TIBSQL SQL editor will operate correctly and not report an SQL syntax error on SQL test, + when DSQL ('?') parameter placeholders are used and the TIBSQL.GenerateParamNames property is set to true. + +11. TIBTable now has a property editor for "MasterFields" + +12. SQL Property Editors now include a checkbox "Allow DSQL Placeholder". This corresponds to the + GenerateParamNames property and should be set when using DSQL (i.e. '?') style parameters. + +13. The IBTransaction editor now has a radio button ("Unspecified") which is set when the combination + of settings is unrecognised. Selecting this radio button has no effect on the settings. + + IBX Change Log version (1.0-5) Sat, 28 Dec 2013 19:22:23 +0000 1. TBookmark change conditional compile changed to >= 2.7.0 to match revised availability of change.