application-context.md

Application Context

• Introduction
• Context Lifecycle
• Context Configuration
  • Annotation-Based Configuration
• Context Start

Introduction

The application context is the central interface for component injection.

Context Lifecycle

The application context has a lifecycle that determines what type of operation can be performed with the application context.

The lifecycle can be describe as the following steps:

1. the context configuration phase
2. the context start
3. the execution phase
4. the context stop

The context gets configured and, once started, becomes read-only.

Context Configuration

Not documented yet.

Annotation-Based Configuration

While an application context can be configured programmatically, the same result can be obtained declaratively.

This is achieved through the AnnotationConfigApplicationContext class.

Annotation-based configuration makes it possible to:

• declare components that need to be registered, via the @ComponentScan decorator
• declare other configurations that are dependencies, via the @Import decorator
• provide component instances via methods annotated with a @Component decorator

More information regarding annotation-based configuration can be found in the Annotation-based Configuration chapter.

Context Start

Not documented yet.

Context Stop

Not documented yet.