Glossary

Access Control List (ACL)

Optional attribute of a package interface. If present, it specifies which client packages are granted access to the package interface.

Access Object

Identifies a set of packages (service) that is allowed to access objects in certain client interfaces. These client interfaces must be associated with that access object.

Client Interface

Interface a client of an access object can use to expose certain objects for use by that access object.

Component Object

Object relevant for the package check that appears as part of a composite object.

Composite Object

Object relevant for the package check that contains other objects that are relevant for the package check.

Dependency Control List (DCL)

A dependency control list is a set of packages or interfaces to which the current package has declared a usage. The dependency can be an inclusion or an exclusion. Moreover the dependency can be limited to one or more sub packages of the current package.

Encapsulation Level

The development objects that are added into one or more interface are the exposed objects.

Exposed Objects / Visible Elements

Package that is created by a generating application to contain the generated objects. It is attached to a target package and can access the same objects as the target package. Additionally, it has access to a generator-specific runtime environment that is not accessible by the target package.

Generation Append Package

Local generation append package: A generation append package that exists only locally in the system and cannot be transported. It replaces generating into $TMP.

Package Interface List

A list of package interfaces belonging to the same package. It is provided by the server package to facilitate the declaration of the client's dependency control list.

Package Interface

A list of exposed objects to be used by client packages. The exposed objects can originate from the same package or from another package interface whose contents is propagatable.

Usability

A development object is said to be usable to a surrounding package if the containing interface has not defined any usage restrictions to the surrounding package.

Usage Type

Attribute of the exposure of an object at a package interface or a client interface. It defines the most superior way in which the object can be used. A usage type maps to a set of usage operations.

Usage Operation

Technical identifiable way of using an object, for example using a protected section of a superclass. A Usage Operation may be contained in one or more usage types. Actual package checking is based on usage operations.

Visibility

A development object is said to be visible to the surrounding packages if it exposed in an interface of the package.