ContentAdapter¶
-
class
kanzi::connect
::
ContentAdapter
: public ContentAdapterManager, public enable_shared_from_this<ContentAdapter>, private ContentLoader::Observer¶ A class that acts as an adapter between Kanzi Connect database and Kanzi Data Objects.
It is able to utilize Kanzi Connect Content loaders and form Data Object tree according to given configuration.
Public Functions
Constructor.
- Parameters
serverName
: Identifies the server connection this content adapter belongs toconfig
: Configuration for this adapter that defines where to load data from.domain
: UI domain.context
: Gateway to Kanzi Connect server.dataSource
: The data source instance which owns this content adapter
-
~ContentAdapter
() override¶ Destructor.
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const ContentAdapterConfigurationSharedPtr
getConfig
() const¶ Retrieves current configuration of the adapter.
- Return
Current configuration.
-
DataObjectSharedPtr
getDataObject
() const¶ Retrieves current root of the data object hierarchy.
- Return
Data object that encapsulates all data loaded by this adapter.
-
DataObjectSharedPtr
getItemTemplate
() const¶ Retrieves a list template item of the data object hierarchy.
- Return
list item template. Empty if adapter is not list type.
-
ContentLoaderSharedPtr
getLoader
()¶
Initializes internal state of content adapter according the given configuration.
- Parameters
root
: Root of the data object tree.rootIsParent
: If false, adapter will take over the root object (if root is shared between multiple adapters, set this to true).
Initializes runtime data.
- Parameters
root
: the root object
-
bool
loadItems
(size_t first, size_t count)¶ Query items from loader.
- Return
Query was sent successfully
- Parameters
first
: Zero based index of first rowcount
: Row count
-
void
pauseP2P
()¶ Pause for P2P purposes.
Invalidate all previous content and reload everything to get rid of content that no longer exists.
- Parameters
root
: The root object of the data object tree used by kanzi data source
-
void
setParent
(ContentAdapterManager *manager)¶ Stored the parent object.
- Parameters
manager
: the parent object.
Starts operation of content adapter.
The adapter will connect to external data source and starts pushing changes to data objects.
- Parameters
contentLoader
: Content loader that is used to read external database.
-
void
stop
()¶ Stops operation of content adapter.
-
void
stopBecauseServiceVanished
()¶ Stops the operation of content adapter. to be called when bound service disappears.
Public Static Functions