| Previous | UML Classes | Table of Contents | UML Packages | Next |
ReadVariableAction is a variable action that retrieves the values of a variable.
•
VariableAction (from StructuredActions ) on page 302.
This action reads the values of a variable in order if the variable is ordered.
No additional attributes
• result : OutputPin [1..1] Gives the output pin on which the result is put. (Subsets Action::output)
[1] The type and ordering of the result output pin of a read-variable action are the same as the type and ordering of the
variable.
self.result.type =self.variable.typeand self.result.ordering = self.variable.ordering
[2] The multiplicity of the variable must be compatible with the multiplicity of the output pin.
self.variable.multiplicity.compatibleWith(self.result.multiplicity)
Issue 8036 - Clarify semantics of read actions; specify that the order of retrieved collections is preserved in the values
of the output pin.
The values of the variable are placed on the output pin of the action. The type and ordering of the output pin are the same
as the specified variable. The order of the retrieved values in the output pin is the same as the ordering of the values of
the variable. The multiplicity of the variable must be compatible with the multiplicity of the output pin. For example, the
modeler can set the multiplicity of this pin to support multiple values even when the variable only allows a single value.
This way the action model will be unaffected by changes in the multiplicity of the variable.
No specific notation
ReadVariableAction is introduced to retrieve the values of a variable.
ReadVariableAction is unchanged from UML 1.5.