Component Access Modes and Modifiers

The access attribute for a component controls how a component can be deployed. There are two modes, path and public. If access is set to path, then the component can only be referenced by other components in the same path and cannot be directly installed by the user. If access is set to public, then no such restrictions apply. A component can be referenced by any other component regardless of its path and it can be deployed directly by a user. The default access mode for a component is public.

The modifiers, abstract and final, for a component effect deployment options. If the modifier is set to abstract then the component may not be installed. It serves only as a base component for other components to extend. Only abstract components may declare abstract child elements. If the modifier is set to final then the component may not be extended by another component. If the modifier is omitted, then the component may be extended and installed.