You can assign subschemas to the Data Elements and Segment that are called in a Logical View -CE Lines and specify information about data transfer. You enter this information in a wizard.
To open this wizard, you can click More in the definition sections of the calls in the -CE Lines tab. You can also click the button that is available when you click the columns Subschemas, Transfer direction, Transfer operator, and Transfer area directly in the table of the tab.
With this wizard, you indicate the data transfers by mapping the elements that are called in the Logical View with the Data Elements that are called in Segments. To implement a selection service, data must be transferred from the Segments to the Logical View, after the accesses to the external resources. When a check and update service is implemented, data must be transferred from the Logical View to the Segments, after the accesses to the external resources for checking and before the access for updating.
The values that are used for the data transfer must be entered in the columns of the table in the More pane. To enter values, you must click Add. A new row is then created in the table so that you can enter and select the required values. You can move the lines in the table by clicking the direction buttons. You can click Remove to remove a row from the table.
Options | Comments |
---|---|
Both directions | Default value for an update service or a selection service. It is the required value for graphic applications. |
C: Client to Server | Client to Business Component: from the Logical View to the Segment for an update service. |
S: Server to Client | Business Component to client: from the Segment to the Logical View for a selection service. |
The transfer direction must also be indicated in the group Data Elements. The repeated Data Elements must have the same transfer direction. This direction can be indicated on the Data Elements that bounds the repeated data (Data Element with an R indicator). You enter the C or S value in this Data Element only if the Direction of transfer field in the Logical View Definition tab is both directions.