Atlas — Standard activities — Extension points

The activity names listed here, known as extension points, are by design implemented at the @baseclass, Assign- or Work- level and have an empty Steps tab. These are sometimes informally known as placeholders or callbacks; they allow your application to extend the processing provided by a standard rules that are marked as final.

In your application, you can override these stubs with an activity that applies to a work type (or work pool) to implement desired processing at the events indicated. Typically, the standard calling activities noted below are marked as final, and so they cannot be overridden.

In most cases, place the overriding activity in a more specific (lower level) Applies To class.

Extension points marked with a dot () are part of the Process Engine API. See Standard activities — Process Engine API.

Extension points in the Assign- class

As a best practice, override these activities using an Applies To key part that is a cover work type in your application.

Name

Purpose

Assign-.
NewDefaults

Called from Work-.NewAssign and Work-.NewAssignBasket on the assignment. Allows the developer to customize or extend the steps that are performed when a new assignment is created.

Assign-Service.
HandleInterrupt

For an asynchronous service call that is interrupted by a ticket, or by a service level event (such as from the ResumeFlow service level). Can send a message to the called external system to indicate that a flow has advanced beyond the connector call, for example because a ticket was activated.

Called by the RemoveAssignmentByTicket and Assign-.CompleteAssignment activities.

Extension points in the Work- class

As a best practice, override these activities using an Applies To key part that is a work type in your application.

Name	Purpose
Work- .AddCoveredDefaults	May be called by Work-.AddCoveredWork. Override to customize or extend the steps that are performed during post-processing of the addition of a covered work object using a flow action. Called by the post-processing activity of the Work-.AddCovered flow action.
Work- .NewCoveredDefaults	Called by Work-Cover-.ActionCreateCover, part of the AddCovered flow action. Override to customize or extend the steps performed before adding a covered object.
Work- .CloseDefaults	Called from Work-.Close. Override to include steps to occur when the work object form is closed, such as to clean up pages or properties set in Work-.OpenDefaults.
Work- .NewDefaults	Called from Work-.New and Work-.NewCovered. Override to customize or extend the steps that are performed while creating new work page for the New harness.
Work- .OpenDefaults	Called from Work-.Open, Work-.OpenCover, and Work-Cover-.OpenCover. Override to customize or extend the steps that are performed while opening a work object for display with a user form defined by a harness.
Work- .PerformDefaults	Called by the Work-.Perform activity. Override to customize or extend the steps that are performed while processing an assignment.
Work- PreClose	Called by the Work-.CloseWorkItem activity. Allows developers to control what appears when a user closes a user form, such as by clicking the close box. By default, the next display is the user's worklist, but your application can call the GetNextWork activity or present a different display.
Work-.ReassignDefaults	Called from Work-.Reassign. Override to customize or extend the steps that are performed while reassigning (transferring) an assignment to a different user's worklist.
Work-.ReassigntoWork BasketDefaults	Called from Work-.ReassignToWorkBasket. Override to customize or extend the steps that are performed while reassigning an assignment to a workbasket.
Work-.UpdateDefaults	Called by Work-.Update and Work-.UpdateCovered. Also called by Work-.Open, Work-.OpenCover, and Work-Cover-.OpenCover unless the work item is opened in read-only mode. Override to customize or extend the steps that are performed while opening a work item for update.

Extension points in the Work-Cover- class

As a best practice, override these activities using an Applies To key part that is a cover work type in your application.

Name	Purpose
Work-Cover- .AddToCoverDefaults	Called by Work-Cover-.AddToCover.
Work-Cover- .RemoveFromCoverDefaults	Called by Work-Cover-.RemoveFromCover.

Other extension point activities

These activities support various development and application processing.

Name	Purpose
@baseclass. CheckForCustomWarnings	For rule types that can have warnings, you can implement additional custom warning checks that apply when a rule of that type is saved. Override this activity with an activity where the Applies To key part is a rule type. Called by standard activities named Rule-ZZZZ.CheckForWarnings, where Rule-ZZZZ is a rule type. Call the standard function addWarning(), and override the standard decision tree Embed-Warning.ShowWarningonForm
Code-Security. ApplicationProfileSetup	Can perform application-specific setup after other log-on initialization is complete. Called by Code-Security.InitialProfileSetup activity.
Code-CachedSystemSettings. LoadApplicationDataSystemSettings	Creates the declarative page `Declare_CachedSystemSettings`. Called by the LoadDataSystemSettings activity. Override to load dynamic system settings values into this declarative page.
Data-Corr-.Send	Extended for each class derived from the Data-Corr- class.
Data-WorkAttach-File.CallVirusCheck	Allows your application to call an external routine to check a work item attachment for computer viruses before it is saved in the database. Called by standard activities for each attachment type.
Rule-.AddApprovalDependency	Supports customization of the rule check-in process when the rule management flow is used. Called by the Rule-.WBApproval_CheckIn activity.
Rule-.SetApprovalDependency	Allows customization of check-in processing.
Rule-.PreCheckIn	Called from the Rule-.WBCheckIn activity.
Rule-.PreCheckOut	Called from the Rule-.WBCheckOut activity. Allows customization of check-in processing.
@baseclass-.PostSaveAs	Called from @baseclass.WBSaveAs and Rule-.WBSaveAs activities. Allows customization of processing during the Save As operation for a form.
Rule-.OnRecover	Allows customization of processing performed by the Recover toolbar button ().
Rule-Obj-.Validate	Extended in classes derived from the Rule-Obj- class.

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