Behavior : Activity Diagrams - Object Flows/Edges
8 important questions on Behavior : Activity Diagrams - Object Flows/Edges
Our previous examples have been concentrating on ...... Flows.
We need to explaint how to model ..... Flows to have the complete capability to describe or design software intensive systems.
We need to explaint how to model Data Flows to have the complete capability to describe or design software intensive systems.
Objects Flows have the capability to .... ?
Normally, control tokens on edge can determine when a behavior can be allowed to start, but most software-oriented behavior requires data to be passed to the behaviors.
An object node is depicted by a ....
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There are two different notations to show object edges / flows.
Which one?
Which format do we use in this diagram and when do you use this approach?![]()
This is also a type of object node best used to indicate the form and multiplicity for a PARAMETER.
What is the difference between control flows and object flows?
- delays
- multicast/copying of tokens
- ordering (e.g., FIFO, LIFO)
- selection of tokens by data value/conditions
- and transformations.
What is a Join?
- Control Node
- When all the input flows (along with their tokens) arrive at the Join, an output flow is emitted (with its token) on the output edge
- This eliminates all but one of the tokens arriving
- If not all of the edges have tokens, processing cannot continue and hangs at the Join
What is a Flow Final?
- Control Node
- Any token reaching the Flow Final is destroyed (i.e., consumed); however, if there are more active tokens in the diagram, execution is continued until they are also consumed
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