AddChangeAspect

Modifies a given property value.

Examples

The following example computes a new value for the property IsDraft from the Directory_User entity type. The new value is always true. The pointcuts define when the value change must happen.

<AddChangeAspect Identifier="Directory_UserRecord_AddChange_IsDraft" Binding="Workflow_Directory_User:Directory_User.IsDraft" ExpressionBinding="Workflow_Directory_User:Directory_User" Expression="C#:record:return true;">
    <PointCut Activity="Directory_User_NewInternal:PersistDraft" ActivityState="PersistOnlyResources-Invoked" Mode="Before" TemplateTransformation="NewInternalWorkflowIsReviewRequired" />
    <PointCut Activity="Directory_User_NewExternal:PersistDraft" ActivityState="PersistOnlyResources-Invoked" Mode="Before" TemplateTransformation="NewExternalWorkflowIsReviewRequired" />
</AddChangeAspect>

Accept Null Value

The following example computes a new value for the Card property in users' records, considering null as a value. Instead of being ignored, a null value returned by Expression will replace the old value.

<AddChangeAspect Identifier="AddChangeAspect_Self_PersonRecord_Card" Binding="Workflow_Person:Person.PersonRecords.Card" AcceptNullValueExpression="C#:record:return true;" ExpressionBinding="Workflow_Person:Person.PersonRecords" Expression="C#:record:
        if(!string.IsNullOrEmpty(record.Card))
        {
            return record.Card;
        }
        return null;" >
    <PointCut Activity="Self_DataUpdate:Request" ActivityState="Action-Executed" Mode="After" />
</AddChangeAspect>

Properties

Property	Details
Binding required	Type: String Description: Binding whose difference with ExpressionBinding defines the property to be changed.
Identifier required	Type: String Description: Unique identifier of the aspect.
AcceptNullValueExpression optional	Type: String Description: C# expression returning a boolean, true to consider null for the new value returned by Expression. By default, null values are ignored.
Expression optional	Type: String Description: C# expression returning a new value for the property to be changed. Note: this property can also be defined by a binding via ExpressionBinding.
ExpressionBinding optional	Type: String Description: Binding:- that defines the variable type used in the potential expressions specified in the aspect;- whose difference with Binding defines the property involved in the aspect.Note: required when handling the property of multi-valued objects, for example records, to make sure to modify the property in all records and not only in one.
IfExpression optional	Type: String Description: Expression that conditions the aspect execution. See more details on C# expressions.
Priority default value: 0	Type: Int32 Description: Execution priority among all aspects. At a given activity state, the aspect with the highest priority will be triggered first.Note: the priority can be a negative value.

Child Element: PointCut

A pointcut is a mechanism telling Identity Manager when to execute the linked aspect.

The position of the pointcut is specified by an activity state and a mode (before or after).

Property	Details
Activity required	Type Int64 Description Identifier of the activity whose specified state triggers the aspect.
ActivityState required	Type Enumeration Description Identifier of the activity state that triggers the aspect.
Mode default value: 0	Type PointCutMode Description Mode defining when exactly the aspect is triggered around the specified workflow's activity state. 0 - Before: the aspect will be executed on entry to the specified activity state, regardless of the transition used. 1 - After: the aspect will be executed on exit from the specified activity state, regardless of the transition used.