Forms: Arc and Guard

In most Workflow models, Arcs simply pass Tokens from the Transition to an output Place, however dashed lines represent Arcs with Guards.

Output Arcs can implement "Guards". These are filter conditions which act to stop Tokens being added to Places if they evaluate to false.

Guards enable decision making in workflows based on the underlying data. Arcs simply pass Tokens from the Transition to an output Place, however dashed lines represent Arcs with Guards.

Guards can be given Expressions (these appear when the cursor hovers over the Arc). Guard Expressions are configured by the user and can use data available at the time the alarm was generated plus status information that is returned from the task.

Form: Arc and Guard Details

Field	Description
Input	The node the Arc originates from.
Output	The node the Arc terminates at.

The following fields are configured through separate tabs on the form:

Field	Description
Description	A description of the Arc.

Form Icons

The form provides the standard form icons.

See Also

Forms

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