Stateflow

Connective Junctions

A connective junction represents a decision point between alternate transition paths taken for a single transition. See the following topics for more information on connective junctions:

• What Is a Junction? -- Defines a connective junction and describes some of the transition constructs it can be used to create.
• Flow Diagram Notation with Connective Junctions -- Introduces you to the concept of using connective junctions to create flow diagrams that create the logic of common code structures and provides extensive examples of their use.

What Is a Junction?

The connective junction enables representation of different possible transition paths for a single transition. Connective junctions are used to help represent the following:

• Variations of an if-then-else decision construct, by specifying conditions on some or all of the outgoing transitions from the connective junction
• A self-loop transition back to the source state if none of the outgoing transitions is valid
• Variations of a for loop construct, by having a self-loop transition from the connective junction back to itself
• Transitions from a common source to multiple destinations
• Transitions from multiple sources to a common destination
• Transitions from a source to a destination based on common events

Note    An event cannot trigger a transition from a connective junction to a destination state.

See Connective Junction Examples for a summary of the semantics of connective junctions.

Default Transition Examples

Flow Diagram Notation with Connective Junctions