Package com.tccc.kos.core.service.app

package com.tccc.kos.core.service.app

This package provides the core application framework for KOS, including application lifecycle management, dynamic loading capabilities, and messaging infrastructure.

Core Components

Application Foundation

The abstract Application class serves as the starting point for all KOS applications, providing:

• Access to core KOS services (MessageBroker, VFS, BeanContext)
• Configuration management and database migration support
• Lifecycle hooks for initialization and cleanup
• Browser intent handling and routing capabilities

The SystemApplication extends this foundation with additional methods to access the device, assembly, and region services.

Dynamic Application Management

The AppService provides comprehensive application lifecycle management:

• Dynamic loading and unloading of applications from KAB files
• Event notifications for application state changes

Applications are loaded using AppLoader implementations, with LoadableApp representing applications that can be dynamically managed by the system.

Event System

The package provides event-driven application management through:

• AppListener - Interface for receiving application lifecycle events
• AppStartedCallback - Callback for application startup completion
• Integration with the core message broker system

Messaging Infrastructure

The AppMessageBroker provides application-scoped messaging by automatically prefixing topics with the application ID, enabling isolated communication channels for each application while maintaining access to the global message broker.

Since:

1.0

Version:

2025-01-21

See Also:

• KosCore
• MessageBroker
• KabFile

Class	Description
AppBrowserIntent	A subclass of BrowserIntent that generates an intent that is targeted at a specific application.
Application<T extends BaseAppConfig>	Base class for all KOS applications.
Application.View
AppListener	Listener for Application-related events.
AppLoader	Class responsible for loading an application from the filesystem.
AppMessageBroker	Wrapper for the system message broker that prefixes the topics with the application id.
AppService	Service that manages applications within KOS.
AppStartedCallback	Callback for AppService.whenAppStarted().
BaseAppConfig	Base class for application configuration beans.
LoadableApp	Information about a manifest section that has a "kos.autostart." prefix.
SystemApplication<T extends BaseAppConfig>	Base class for system applications, which simply adds convenience methods to the base Application type.