JBoss MicroKernel Configuration

The configuration is made up of a number of different layers.

• Kernel configuration - defines implementation classes and config of kernel services

• Profile - defines what Systems/Subsystems/POJOs are active.

• Deployment aspects - what processing is done for each deployment.

• POJO metadata - defines the POJO/Service (e.g. what configuration is required, default values, what the service provides, dependencies, etc.)

• POJO configuration - the real configuration (e.g. the attribute values, the dependents, etc.)

Kernel configuration

The kernel configuration is used by the initial bootstrap.

• Implementation classes, e.g. POJO vs AOP/JMX kernel

• Container configurations for kernel services and default container configurations for other services.

• Metadata for kernel services.

• Initial deployment aspects

• Initial VFS configuration

• Initial profile

Profile

Defines the POJOs to be activated.

• List of POJOs and required state.

• Location of configuration for each POJO.

Deployment aspects

• The aspects to process deployments.

POJO Metadata

• Similar to MBeanInfo but without dependency on JMX

• Additional Metadata for IOC/New Clustering implementation

POJO Configuration

• Similar to -service.xml

Design

• Definitions

• The core kernel

• The bootstrap

• Configuration

• Kernel aspects

• Deployment

• JBoss Server implications