[This is preliminary documentation and subject to change.]
Updates framework
Introduction
The Updates framework is used to opitimize the transfer of data objects from the client to the server.
NamespaceDoc depends on this namespace. It is impossible to compare the modified and original graph of data objects to determine the deleted objects becuase the modified graph is not fully available. Therefore the data object contains a property Update that remembers its modifications. This updates are sent over the network instead of the partial graph.
Design diagram
Classes
| Class | Description |
|---|---|
| DataObjectUpdate | Represents all modifications made on a data object. |
| DogUpdate | The dog update represents the root data object of a DOG which should be stored. |
| ItemAdditionUpdate | Represents the addition of an item to an indexed property. |
| ItemInsertionUpdate | Represents the insertion of an item into an indexed property of a data object. |
| ItemRemovalAtUpdate | Represents the removal of an item at a specified index from an indexed property of a data object. |
| ItemRemovalUpdate | Represents the removal of an item from an indexed property of a data object. |
| ItemReplacementUpdate | Represents the replacement of an item of an indexed property with another item. |
| ItemUpdate | Base class for all data object updates where the value represents a data object. |
| ListClearingUpdate | Represents the clearing of an indexed property. |
| PrimitiveFieldUpdate | Represents the update of a single property which is not of type IDataObject. |
| SingleFieldUpdate | Represents the update of a single property of type IDataObject. |
Interfaces
| Interface | Description |
|---|---|
| IUpdate | Interface for all updates made on data objects. |