The ContainerProvider Architecture

This section shows the relationship between the various interfaces and classes discussed in this chapter. The JSPProvider (see Chapter 4, Overview of the Leaf Providers for more information) and ContainerProviderAdapter classes extend ProfileProviderAdapter (see Chapter 2, Overview of the Provider API (PAPI) for more information).

The ContainerProvider interface defines the interface for implementing a container provider. A container provider is a provider that generates its views primarily by being a client of other provider objects.

The ContainerProviderAdapter provides default implementations of the following methods in the ContainerProvider: get/setSelectedChannels(), get/setAvailableChannels(), get/setWindowState(), and getSupportedWindowStates(). For more information on all the methods in this class, see the Javadocs.

The ContainerProviderContext extends ProviderContext and adds container functionality to the ProviderContext interface. The ContainerProviderAdapter uses the ContainerProviderContext object as the persistent store.

The JSPContainerProviderAdapter extends the JSPProvider (see Chapter 4, Overview of the Leaf Providers for more information) and provides implementations of methods in the ContainerProvider interface to facilitate the execution of JSPs.

The JSPTabContainerProvider extends the JSPContainerProviderAdapter and provides default implementation for methods in the TabContainer interface. The JSPSingleContainerProvider and the JSPTableContainerProvider also extend the JSPContainerProviderAdapter.

Figure 5–1 The ContainerProvider Architecture