Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved


Chapter 10 Palette Reference : Null

Null
Activity
The Null activity is an activity with no action performed. This activity has a name and a description specified on the Configuration tab, but there is no input or output for the activity.
This activity can be useful in error-handling routines if you wish to catch a fault but perform no action. This activity can also be useful to join multiple process flows.
Configuration
The Configuration tab has the following fields.
Join Condition
The Join Condition tab allows you to define an expression based on the values of the incoming transitions to the activity. If the expression evaluates to true, the activity is executed, if the expression evaluates to false, either the activity is bypassed or a fault is thrown. See Transitions and Join Conditions for more information about join conditions.
The Join Condition tab has the following fields.
Specifies what action to perform if the join expression evaluates to false. The following options are available:
Inherit setting — use the default action specified within the current scope. The current scope is either the current group containing the activity or the orchestration process if the activity is not within a group.
Bypass activity if false — skip the processing of the activity, set the outgoing transition conditions to false without evaluating them, and resume processing.
Throw fault if false — throw a joinFailure fault and switch control to an error-handling routine configured to catch all unhandled exceptions. If the exception is not caught, the fault is propagated to the calling environment.
The expression to evaluate to determine if the activity should be executed. The only data available to this expression is the value of any transitions into the activity. You can use the XPath Formula Builder to create the join expression.
 

Copyright © TIBCO Software Inc. All Rights Reserved
Copyright © TIBCO Software Inc. All Rights Reserved