Chapter 10. Package com.itmill.toolkit.data
Table of Contents
- Package Specification
- Validation
- Interface Buffered
- Exception Buffered.SourceException
- Interface BufferedValidatable
- Interface Container
- Interface Container.Editor
- Interface Container.Hierarchical
- Interface Container.Indexed
- Interface Container.ItemSetChangeEvent
- Interface Container.ItemSetChangeListener
- Interface Container.ItemSetChangeNotifier
- Interface Container.Ordered
- Interface Container.PropertySetChangeEvent
- Interface Container.PropertySetChangeListener
- Interface Container.PropertySetChangeNotifier
- Interface Container.Sortable
- Interface Container.Viewer
- Interface Item
- Interface Item.Editor
- Interface Item.PropertySetChangeEvent
- Interface Item.PropertySetChangeListener
- Interface Item.PropertySetChangeNotifier
- Interface Item.Viewer
- Interface Property
- Exception Property.ConversionException
- Interface Property.Editor
- Exception Property.ReadOnlyException
- Interface Property.ReadOnlyStatusChangeEvent
- Interface Property.ReadOnlyStatusChangeListener
- Interface Property.ReadOnlyStatusChangeNotifier
- Interface Property.ValueChangeEvent
- Interface Property.ValueChangeListener
- Interface Property.ValueChangeNotifier
- Interface Property.Viewer
- Interface Validatable
- Interface Validator
- Exception Validator.InvalidValueException
- Interface Validator.Suggestive
Provides interfaces for the data layer which contains classes
for typed data values, data collections, and handlers. A
Property
is a simple typed data
value; an
Item
is a collection of
Properties, each corresponding to a unique identifier; a
Container
is a collection of
identified Items with special constraints; a
Buffered
class is able to track
its changes and to commit or discard them later.
The package contains a three-tiered structure for typed data objects and collections of them:
-
The simplest of these is the
Propertywhich represents a single typed data value. A Property may be read-only in which case attempts to modify its contents will throw an exception. -
The second level of the data layer is represented by the
Itemwhich embodies a set of Properties . Each Property in an Item corresponds to a locally unique(that is, inside the Item) identifier. -
The third level is called the
Containerwhich can be visualized as a set of Items, each corresponding to a locally unique identifier. Note that the Container imposes a few restrictions on the data stored in it, see further documentation in the class specification .
Buffered
interface, which defines
the methods to make an object buffered, that is, track the changes to an
object and allow committing or discarding them at a later time.
Provides interfaces for the validation framework. The framework defines two interfaces; one for classes that need to support external validation, and another one for the validators themselves.