Field Values as Select Expressions

One way to get field data is based on a select expression applied to a businessobject or relationship. The select expression might return one or more values.

For example, to get data for a Current State field, you can use a select expression applied to the current business object. To get the value for the Find Number attribute, which is an attribute on a relationship, you can use a select expression applied to the relationship whose ID is passed to the form page. This graphic shows examples of these two fields on a form in View mode.



The fields would look like this when the web form administrative object is displayed on a form page in Edit mode.



To configure a field so the data is obtained from a select expression, use these parameters and settings:


  • Expression parameter--Enter the select expression to apply to a business object or relationship to get the field values.
  • Applies to--Choose what the expression should be applied to: Business Object or Relationship.
  • Field Type setting--When the expression is a business object basic or an attribute and the field is editable, you must include the Field Type setting. This lets the system correctly update the basic or attribute property.

The graphics below show how the Current State and Find Number fields shown previously are configured in the Business Modeler. In addition to the parameters that get the data using a select expression, the fields have settings that define the application associated with the field and that specify the administrative type so the value can be translated.

These dialog boxes show how to configure a field to get data from an expression applied to the current business object.



These dialog boxes show how to configure a field to get data from an expression applied to the current relationship.