Add APIs to inform components of stale objects in DataProvider (#8271)
* Add DataProvider refreshItem for single item update
* Add 'id' concept for DataProviders
This patch also adds a simplified data provider that can replace items
based on their id. This can be used to simulate stale objects from an actual
backend.
* Add refresh logic to Grid SelectionModels
* Remove broken equals and hashCode
* Refresh KeyMapper, clean up some methods
* Fix UI.access in test
* Fix tests and Grid single selection model
* Do clean up before replacing data provider
* Check correct variable for null value
* Fix other selects, add generic tests
* Code style fixes, removed assert
* Merge remote-tracking branch 'origin/master' into 286_refresh_items
* Fix documentation for refreshing an item
* Improve introduction chapter, minor clarifications
* Merge remote-tracking branch 'origin/master' into 287_refresh_items
* Add missing parameters in unit tests
Allow distinct configurable filter and wrapped filter types (#8322)
* Allow distinct configurable filter and wrapped filter types
This enables implementing the use case that was already described
towards the end of datamodel-providers.asciidoc.
Also swaps the order of the callback type parameters to make all three
match the order of the ConfigurableFilterDataProvider type parameters.
Change BackEndDataProvider into an interface (#8268)
* Change BackEndDataProvider into an interface
BackEndDataProvider is now an interface with methods for setting
sorting options based on SortOrder instances.
AbstractBackEndDataProvider stores sorting options, combines them with
the sorting provided in the query and invokes its own abstract fetch and
size methods.
CallbackDataProvider implements a BackEndDataProvider based on two
lambdas.
This is one of many steps towards #8245
Replace old data binding chapters with updated ones
* Add documentation about Fields for the data binding chapter
* Add documentation about form binding for the data binding chapter
* Add documentation about data sources for the data binding chapter
Change-Id: I99297f2ebd3d874bd78569fd8d05bc649654c91d