Figure 9-7: Usage example of proxy and full ports

Gallery
Tutorial
TRAIL: The SysML-1.6 Hybrid SUV sample and specification diagrams in MagicDraw/Cameo (with annotations) [UNDERGOING UPDATE to SysML1.7]
Section
Section: SysML-1.6 specification diagrams: 09 Ports and Flows
UML keywords
Port
SysML keywords
SysML specification figure
ProxyPort
FullPort
Slide kind
SysML Block Definition Diagram (BDD)
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SysML-1.6: 'Modelers can apply stereotypes for proxy and full ports at any stage of model development, or not all if the stereotype constraints are not needed.'
SysML-1.6: 'Figure 9-7 happens to use unstereotyped ports on a general block distributed to users, and stereotyped ports on its specializations for implementation, but the modelers might have not used stereotypes at all, if they did not care whether the model met ...'
SysML-1.6: 'Unstereotyped ports do not commit to whether they are proxy or full, and do not prevent or dictate future application of the stereotypes, except for ports that violate constraints of the stereotypes.'
SysML-1.6: 'For example, if the port types on the general block in Figure 9-7 had behaviors defined, then the proxy specialization would be invalid. If the general ports had binding connectors to internal parts, then the full specialization would be invalid. If the general ports had both behaviors and internal binding connectors, then both specializations would be invalid.'
SysML-1.6: 'Unstereotyped ports have the basic functionality of stereotyped ones, including flow properties and nested ports, so they can be used as long as the modeler is not concerned with the distinction between proxy and full, and the constraints they impose.'
Because:
Webel Best Practice: It is NOT true in SysML1.6+ that you "should" always use a SysML FullPort or a SysML ProxyPort instead of a "standard" Port, and it's not even always a good idea (and the spec states this very clearly in multiple places)!
Up next
Figure 9-8: Water Delivery association block
Notes
[ISSUE] SysML-1.6: does not leverage redefinition of 'sp:Surface' on 'Figure 9-7: Usage example of proxy and full ports' (earlier versions of the spec did). And does not show direction of flows.
[ASSERTION, WARNING] It is NOT true in SysML1.6+ that you "should" always use a SysML FullPort or a SysML ProxyPort instead of a "standard" Port, and it's not even always a good idea (and the spec states this very clearly in multiple places)!
Snippets (quotes/extracts)
  [SysML-1.6] Ports with types that have flow properties all in the same direction, either all in or all out, can have an arrow inside them indicating the direction of the properties with respect to the owning block.
  [SysML-1.6] Modelers can apply stereotypes for proxy and full ports at any stage of model development, or not all if the stereotype constraints are not needed.
  [SysML-1.6] Figure 9-7 happens to use unstereotyped ports on a general block distributed to users, and stereotyped ports on its specializations for implementation, but the modelers might have not used stereotypes at all, if they did not care whether the model met ...
  [SysML-1.6] Unstereotyped ports do not commit to whether they are proxy or full, and do not prevent or dictate future application of the stereotypes, except for ports that violate constraints of the stereotypes.
  [SysML-1.6] For example, if the port types on the general block in Figure 9-7 had behaviors defined, then the proxy specialization would be invalid. If the general ports had binding connectors to internal parts, then the full specialization would be invalid.
  [SysML-1.6] If the general ports had both behaviors and internal binding connectors, then both specializations would be invalid.
  [SysML-1.6] Unstereotyped ports have the basic functionality of stereotyped ones, including flow properties and nested ports, so they can be used as long as the modeler is not concerned with the distinction between proxy and full, and the constraints they impose.
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