Sources Tab

2.40 Sources Tab

Use to create a source link for synchronizing the execution of activities within a flow activity to ensure that certain activities only execute after other activities have completed.

For example, assume you have an invoke activity that is executed in parallel with other invoke activities when the flow activity begins. However, one target activity (scheduling a flight) only requires execution if a source activity (verifying that a flight is available) has executed. Therefore, you add a link between the two invoke activities. Links provide a level of dependency indicating that the activity that is the target of the link is only executed if the activity that is the source of the link has completed.

For more information about targets and sources, see the Business Process Execution Language for Web Services Specification (for BPEL 1.1) or the Web Services Business Process Execution Language Version 2.0 Specification at http://www.oasis-open.org.

Element	Description
Add icon	Click to create a source link name for this activity.
Delete	Click to delete a selected source link name.
Sources Table	Displays the source link names for this activity.
Link Name	When you click the Add icon, a field is displayed for entering a source link name.
Transition Condition	Click the row in this column to display a Browser icon for accessing the Expression Builder dialog. You must have already entered a link name for this icon to be displayed. This enables you to create an expression condition that acts as a safe guard for following the specified link. If this column is left blank, it is assumed to evaluate to true.