ConnectionDefinition

ConnectionDefinition is defined in SysML specification on page 208. Excerpt from the machine readable specification:

A ConnectionDefinition is a PartDefinition that is also an AssociationStructure. The end Features of a ConnectionDefinition must be Usages.

The following diagram shows the inheritance hierarchy of ConnectionDefinition according to the specification:

The following table shows all attributes defined for ConnectionDefinition according to the specification together with the documentation from the machine readable specification. Note that in SysIDE API, we use snake case for attribute names instead of Pascal case used in the specification.

Attribute	Documentation from machine readable specification
Attributes defined in ConnectionDefinition:
connection_ends	The Usages that define the things related by the ConnectionDefinition.
Attributes defined in PartDefinition:
Attributes defined in AssociationStructure:
Attributes defined in ItemDefinition:
Attributes defined in Association:
association_ends	The features of the Association that identify the things that can be related by it. A concrete Association must have at least two associationEnds. When it has exactly two, the Association is called a binary Association.
related_types	The types of the associationEnds of the Association, which are the relatedElements of the Association considered as a Relationship.
source_type	The source relatedType for this Association. It is the first relatedType of the Association.
target_types	The target relatedTypes for this Association. This includes all the relatedTypes other than the sourceType.
Attributes defined in Structure:
Attributes defined in OccurrenceDefinition:
is_individual	Whether this OccurrenceDefinition is constrained to represent single individual.
life_class	If isIndividual is true, a LifeClass that specializes this OccurrenceDefinition, restricting it to represent an individual.
Attributes defined in Classifier:
owned_subclassifications	The ownedSpecializations of this Classifier that are Subclassifications, for which this Classifier is the subclassifier.
Attributes defined in Relationship:
is_implied	Whether this Relationship was generated by tooling to meet semantic rules, rather than being directly created by a modeler.
owned_related_elements	The relatedElements of this Relationship that are owned by the Relationship.
owning_related_element	The relatedElement of this Relationship that owns the Relationship, if any.
related_elements	The Elements that are related by this Relationship, derived as the union of the source and target Elements of the Relationship.
sources	The relatedElements from which this Relationship is considered to be directed.
targets	The relatedElements to which this Relationship is considered to be directed.
Attributes defined in Class:
Attributes defined in Definition:
directed_usages	The usages of this Definition that are directedFeatures.
is_variation	Whether this Definition is for a variation point or not. If true, then all the memberships of the Definition must be VariantMemberships.
owned_actions	The ActionUsages that are ownedUsages of this Definition.
owned_allocations	The AllocationUsages that are ownedUsages of this Definition.
owned_attributes	The AttributeUsages that are ownedUsages of this Definition.
owned_calculations	The CalculationUsages that are ownedUsages of this Definition.
owned_cases	The code>CaseUsages that are ownedUsages of this Definition.
owned_concerns	The ConcernUsages that are ownedUsages of this Definition.
owned_connections	The ConnectorAsUsages that are ownedUsages of this Definition. Note that this list includes BindingConnectorAsUsages, SuccessionAsUsages, and FlowConnectionUsages because these are ConnectorAsUsages even though they are not ConnectionUsages.
owned_constraints	The ConstraintUsages that are ownedUsages of this Definition.
owned_enumerations	The EnumerationUsages that are ownedUsages of this Definition.
owned_flows	The FlowConnectionUsages that are ownedUsages of this Definition.
owned_interfaces	The InterfaceUsages that are ownedUsages of this Definition.
owned_items	The ItemUsages that are ownedUsages of this Definition.
owned_metadata	The MetadataUsages that are ownedUsages of this Definition.
owned_occurrences	The OccurrenceUsages that are ownedUsages of this Definition.
owned_parts	The PartUsages that are ownedUsages of this Definition.
owned_ports	The PortUsages that are ownedUsages of this Definition.
owned_references	The ReferenceUsages that are ownedUsages of this Definition.
owned_renderings	The RenderingUsages that are ownedUsages of this Definition.
owned_states	The StateUsages that are ownedUsages of this Definition.
owned_transitions	The TransitionUsages that are ownedUsages of this Definition.
owned_usages	The Usages that are ownedFeatures of this Definition.
owned_use_cases	The UseCaseUsages that are ownedUsages of this Definition.
owned_verification_cases	The VerificationCaseUsages that are ownedUsages of this Definition.
owned_views	The ViewUsages that are ownedUsages of this Definition.
owned_viewpoints	The ViewpointUsages that are ownedUsages of this Definition.
usages	The Usages that are features of this Definition (not necessarily owned).
variants	The Usages which represent the variants of this Definition as a variation point Definition, if isVariation = true. If isVariation = false, the there must be no variants.
variant_memberships	The ownedMemberships of this Definition that are VariantMemberships. If isVariation = true, then this must be all ownedMemberships of the Definition. If isVariation = false, then variantMembershipmust be empty.
Attributes defined in Type:
differencing_types	The interpretations of a Type with differencingTypes are asserted to be those of the first of those Types, but not including those of the remaining Types. For example, a Classifier might be the difference of a Classifier for people and another for people of a particular nationality, leaving people who are not of that nationality. Similarly, a feature of people might be the difference between a feature for their children and a Classifier for people of a particular sex, identifying their children not of that sex (because the interpretations of the children Feature that identify those of that sex are also interpretations of the Classifier for that sex).
directed_features	The features of this Type that have a non-null direction.
end_features	All features of this Type with isEnd = true.
features	The ownedMemberFeatures of the featureMemberships of this Type.
feature_memberships	The FeatureMemberships for features of this Type, which include all ownedFeatureMemberships and those inheritedMemberships that are FeatureMemberships (but does not include any importedMemberships).
inherited_features	All the memberFeatures of the inheritedMemberships of this Type that are FeatureMemberships.
inherited_memberships	All Memberships inherited by this Type via Specialization or Conjugation. These are included in the derived union for the memberships of the Type.
inputs	All features related to this Type by FeatureMemberships that have direction in or inout.
intersecting_types	The interpretations of a Type with intersectingTypes are asserted to be those in common among the intersectingTypes, which are the Types derived from the intersectingType of the ownedIntersectings of this Type. For example, a Classifier might be an intersection of Classifiers for people of a particular sex and of a particular nationality. Similarly, a feature for people’s children of a particular sex might be the intersection of a Feature for their children and a Classifier for people of that sex (because the interpretations of the children Feature that identify those of that sex are also interpretations of the Classifier for that sex).
is_abstract	Indicates whether instances of this Type must also be instances of at least one of its specialized Types.
is_conjugated	Indicates whether this Type has an ownedConjugator.
is_sufficient	Whether all things that meet the classification conditions of this Type must be classified by the Type. (A Type gives conditions that must be met by whatever it classifies, but when isSufficient is false, things may meet those conditions but still not be classified by the Type. For example, a Type Car that is not sufficient could require everything it classifies to have four wheels, but not all four wheeled things would classify as cars. However, if the Type Car were sufficient, it would classify all four-wheeled things.)
multiplicity	An ownedMember of this Type that is a Multiplicity, which constraints the cardinality of the Type. If there is no such ownedMember, then the cardinality of this Type is constrained by all the Multiplicity constraints applicable to any direct supertypes.
outputs	All features related to this Type by FeatureMemberships that have direction out or inout.
owned_conjugator	A Conjugation owned by this Type for which the Type is the originalType.
owned_differencings	The ownedRelationships of this Type that are Differencings, having this Type as their typeDifferenced.
owned_disjoinings	The ownedRelationships of this Type that are Disjoinings, for which the Type is the typeDisjoined Type.
owned_end_features	All endFeatures of this Type that are ownedFeatures.
owned_features	The ownedMemberFeatures of the ownedFeatureMemberships of this Type.
owned_feature_memberships	The ownedMemberships of this Type that are FeatureMemberships, for which the Type is the owningType. Each such FeatureMembership identifies an ownedFeature of the Type.
owned_intersectings	The ownedRelationships of this Type that are Intersectings, have the Type as their typeIntersected.
owned_specializations	The ownedRelationships of this Type that are Specializations, for which the Type is the specific Type.
owned_unionings	The ownedRelationships of this Type that are Unionings, having the Type as their typeUnioned.
unioning_types	The interpretations of a Type with unioningTypes are asserted to be the same as those of all the unioningTypes together, which are the Types derived from the unioningType of the ownedUnionings of this Type. For example, a Classifier for people might be the union of Classifiers for all the sexes. Similarly, a feature for people’s children might be the union of features dividing them in the same ways as people in general.
Attributes defined in Element:
declared_name	The declared name of this Element.
declared_short_name	An optional alternative name for the Element that is intended to be shorter or in some way more succinct than its primary name. It may act as a modeler-specified identifier for the Element, though it is then the responsibility of the modeler to maintain the uniqueness of this identifier within a model or relative to some other context.
documentation	The Documentation owned by this Element.
element_id	The globally unique identifier for this Element. This is intended to be set by tooling, and it must not change during the lifetime of the Element.
is_implied_included	Whether all necessary implied Relationships have been included in the ownedRelationships of this Element. This property may be true, even if there are not actually any ownedRelationships with isImplied = true, meaning that no such Relationships are actually implied for this Element. However, if it is false, then ownedRelationships may not contain any implied Relationships. That is, either all required implied Relationships must be included, or none of them.
is_library_element	Whether this Element is contained in the ownership tree of a library model.
name	The name to be used for this Element during name resolution within its owningNamespace. This is derived using the effectiveName() operation. By default, it is the same as the declaredName, but this is overridden for certain kinds of Elements to compute a name even when the declaredName is null.
owned_annotations	The ownedRelationships of this Element that are Annotations, for which this Element is the annotatedElement.
owned_elements	The Elements owned by this Element, derived as the ownedRelatedElements of the ownedRelationships of this Element.
owned_relationships	The Relationships for which this Element is the owningRelatedElement.
owner	The owner of this Element, derived as the owningRelatedElement of the owningRelationship of this Element, if any.
owning_membership	The owningRelationship of this Element, if that Relationship is a Membership.
owning_namespace	The Namespace that owns this Element, which is the membershipOwningNamespace of the owningMembership of this Element, if any.
owning_relationship	The Relationship for which this Element is an ownedRelatedElement, if any.
qualified_name	The full ownership-qualified name of this Element, represented in a form that is valid according to the KerML textual concrete syntax for qualified names (including use of unrestricted name notation and escaped characters, as necessary). The qualifiedName is null if this Element has no owningNamespace or if there is not a complete ownership chain of named Namespaces from a root Namespace to this Element.
short_name	The short name to be used for this Element during name resolution within its owningNamespace. This is derived using the effectiveShortName() operation. By default, it is the same as the declaredShortName, but this is overridden for certain kinds of Elements to compute a shortName even when the declaredName is null.
textual_representations	The TextualRepresentations that annotate this Element.
Attributes defined in Namespace:
members	The set of all member Elements of this Namespace, which are the memberElements of all memberships of the Namespace.
memberships	All Memberships in this Namespace, including (at least) the union of ownedMemberships and importedMemberships.
owned_imports	The ownedRelationships of this Namespace that are Imports, for which the Namespace is the importOwningNamespace.
owned_members	The owned members of this Namespace, which are the ownedMemberElements of the ownedMemberships of the Namespace.
owned_memberships	The ownedRelationships of this Namespace that are Memberships, for which the Namespace is the membershipOwningNamespace.

The following table lists SysIDE specific attributes available for class ConnectionDefinition:

Python Attribute

STD

source

class ConnectionDefinition

__cpp_name__: str = 'syside::sysml::ConnectionDefinition'

STD: tuple[type[syside.ConnectionDefinition], ...] = ()

property connection_ends: syside.LazyIterator[syside.Usage]

property source: syside.Feature | None

property sources: list[syside.Feature]

property owning_related_element: None

property is_implied: bool

property related_elements: syside.LazyIterator[syside.Feature]

property targets: syside.LazyIterator[syside.Feature]

property owned_related_elements: syside.LazyIterator[syside.Feature]

property source_type: syside.Type | None

property related_types: syside.LazyIterator[syside.Type]

property target_types: syside.LazyIterator[syside.Type]

property association_ends: syside.LazyIterator[syside.Feature]