Icon class icon_class fas fa-quote-left icon_class_computed fas fa-quote-left Related content ItemFlow without and with itemProperty - and compatible ItemFlows WaterProcessingPlant - FlowProperty and ItemFlow example with Ports - type staging WaterProcessingPlant - FlowProperty and ItemFlow example with Ports (in BDD with structure) SysML-1.6: InterfaceBlock: OCL in constraint 2_no_part is missing FlowProperty check (for FlowProperty of a valid type other than ValueType). SysML-16: Taken literally the text and OCL of constraint 'Block::6_valueproperties_composite' imply that every FlowProperty typed by a ValueType should have AggregationKind 'composite' SysML-1.6: p.43: 8.3.1.2.1 Property types 'Four general categories of properties of blocks are recognized in SysML ...' does not cover FlowProperty SysML: Whether you use a Block, ValueType, or Signal to represent something that flows (and can be applied to an ItemFlow) depends on what you want to achieve. If you want to indicate something structured with value properties with Units use a Block. SysML: Flows: If you use a Signal to type the itemProperty of an ItemFlow on a Connector, care must be take in how you create the Property or you might get an unwanted signal Reception on the owning context Block. SysML+SysPhS: Flows: If you intend to use a Classifier to type the itemProperty of an ItemFlow on a Connector for a physical interaction you MUST use a Block (not a ValueType or Signal) so your can extend ConservedQuantityKind. Source OMG Systems Modeling Language (SysML) 1.6 Copyright information About Object Management Group copyright in text extracts quoted from OMG specifications for educational purposes Snippet kind CONSTRAINT UML keywords Signal SysML keywords FlowProperty ValueType Block Previous snippet Full quote 1_restricted_types A FlowProperty shall be typed by a ValueType, Block, or Signal. Block.allInstances().base_Class->includes(self.base_Property.type) or ValueType.allInstances().base_DataType->includes(self.base_Property.type) or self.base_Property.oclIsKindOf(UML::Signal) Next snippet Related snippets Related snippets (backlinks) InterfaceBlock::2_no_part Interface blocks composite properties are either ports, value properties or flow properties. Visit also Visit also (backlinks) Flags
