Class UML 2.3::LiteralNull
Description:
A literal null specifies the lack of a value.
Direct Superclasses: LiteralSpecificationDirect Subclasses: Class Precedence List: LiteralNull,
LiteralSpecification,
ValueSpecification,
PackageableElement,
ParameterableElement,
TypedElement,
NamedElement,
ElementProperties:
![](/se-interop/image/right-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
visibility :
VisibilityKind (1 1); -- source
PackageableElement Indicates that packageable elements must always have a visibility, i.e.,
visibility is not optional.
Redefines: NamedElement.visibility
Default value: PUBLIC
![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
owningTemplateParameter :
TemplateParameter (0 1); -- source
ParameterableElement![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
templateParameter :
TemplateParameter (0 1); -- source
ParameterableElement![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
type :
Type (0 1); -- source
TypedElement![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
clientDependency :
Dependency (0 *); -- source
NamedElement![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
name : String (0 1); -- source
NamedElement![](/se-interop/image/right-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
nameExpression :
StringExpression (0 1); -- source
NamedElement The string expression used to define the name of this named element.
{
composite}
Subsets: Element.ownedElement
![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
namespace :
Namespace (0 1); -- source
NamedElement![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
qualifiedName : String (0 1); -- source
NamedElement![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
ownedComment :
Comment (0 *); -- source
Element![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
ownedElement :
Element (0 *); -- source
Element![](/se-interop/image/down-arrow.png?hunchentoot-session=22663%3A12B556D65A42FE40A81D18B6D8E69820)
owner :
Element (0 1); -- source
ElementConstraints:
No additional constraints.
Operations:
Signature: isNull() : Boolean;
Description: The query isNull() returns true.
Expression: result = true
Signature: isComputable() : Boolean;
Description: The query isComputable() is redefined to be true.
Expression: result = true
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