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Operations in Windows Workflow Foundation

Operations in Windows Workflow Foundation

This section contains the custom operations supported by the BAM WF interceptor.

The custom operations provided by the BAM WF interceptor can be categorized by the associated Windows Workflow Foundation track point type:

  • Activity

  • Workflow

  • User

The BAM WF interceptor uses the categories to assign a track point type to each OnEvent. It bases this assignment on the types of operations it sees in the OnEvent filter and the data extraction and manipulation sections. For example, if the OnEvent contains an Update element that uses the GetUserData operation, it is a user track point type because the activity and workflow events do not support this operation. For more information about track points, see System.Workflow.Runtime.Tracking at http://go.microsoft.com/fwlink/?LinkId=80242.

Bb226441.note(en-us,BTS.20).gifNote
Workflow track points cannot extract data from the workflow.

Operations must be compatible both within a filter expression and between the filter expression and the data extraction and manipulation sections within an OnEvent element. The following table shows which operations can be used in a filter expression for each track point type.

Filter expression operation Valid for activity track point? Valid for workflow track point? Valid for user track point?

Equals

Yes

Yes

Yes

And

Yes

Yes

Yes

Concatenate

No

No

No

Constant

Yes

Yes

Yes

GetActivityEvent

Yes

No

No

GetActivityName

Yes

No

Yes

GetActivityProperty

Yes

No

Yes

GetActivityType

Yes

No

Yes

GetContextProperty

No

No

No

GetUserData

No

No

No

GetUserDataType

No

No

Yes

GetUserKey

No

No

Yes

GetWorkflowEvent

No

Yes

No

GetWorkflowProperty

No

No

No

If you mix incompatible operations, you will receive an error when you deploy your interceptor configuration file. For example, if you use both the GetActivityEvent and GetWorkflowEvent within a filter, or in a filter and data extraction or manipulation event (like CorrelationID), you will receive an error.

The following table summarizes the operations that each activity type supports in data extraction or manipulation.

Data extraction or manipulation operation Valid for activity track point? Valid for workflow track point? Valid for user track point?

Equals

Yes

Yes

Yes

And

Yes

Yes

Yes

Concatenate

Yes

Yes

Yes

Constant

Yes

Yes

Yes

GetActivityEvent

Yes

No

No

GetActivityName

Yes

No

Yes

GetActivityProperty

Yes

No

Yes

GetActivityType

Yes

No

Yes

GetContextProperty

Yes

Yes

Yes

GetUserData

No

No

Yes

GetUserDataType

No

No

Yes

GetUserKey

No

No

Yes

GetWorkflowEvent

No

Yes

No

GetWorkflowProperty

Yes

No

Yes

Bb226441.note(en-us,BTS.20).gifNote
There is a one-to-one mapping between a single OnEvent and a single track point.

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