InvokeINCCA Operation

This operation receives data, sends it to the application, and returns data following application processing.

Create the InvokeINCCA Operation

1. From the Interface Mapper, click Operation > New.
2. In the Name field, type InvokeINCCA.
3. Under Select program/copybook, click INCCA.
   The Interface Mapper parses the code for candidate commareas from which to choose. This includes:

   • dfhcommarea - a commarea field specified on an EXEC CICS RETURN statement
   • fields that are sources or targets of COBOL move statements involving dfhcommarea
4. Click INCCA under both Select input data area and Select output data area.

   The INCCA program defines only dfhcommarea, and thus this is the only commarea shown. You can optionally expand and contract the code to see its contents.

5. Do not check Create Default Mappings. In this tutorial, we create the mappings manually.
6. Click OK to create the InvokeINCCA operation.

   The Interface Mapper shows the input and output commarea fields in the left panes.

Map Input Interface Fields

Web Service interfaces receive inbound data from a SOAP request. To receive the data and then pass it into our commarea, we must map the following commarea fields to the interface as input fields:

• int-fld
• dec-fld
• disp-fld
• string-fld

1. Drag int-fld from the Input Commarea pane to the Interface Fields pane.
   Note: Alternatively, you can create this mapping by right-clicking int-fld in the Input Commarea pane and selecting New Input Field from the context menu.
2. In the Interface Fields pane, double-click int_fld.
3. In the Name field, type InIntFld; then click OK to rename the field.
4. Drag the following fields from the Input Commarea pane to the Interface Fields pane and rename each as indicated:

   Input Commarea Field	Interface Field Name
   comp-fld	InCompFld
   dec-fld	InDecFld
   disp-fld	InDispFld
   string-fld	InStringFld

Map Interface Output Fields

Our sample application modifies the data in the commarea fields, and then the service interface passes the modified data back to the requester in a SOAP response. Therefore, we must map the same commarea fields, plus the grp-fld array, to the interface as output fields. The grp-fld array does not receive input from the SOAP request, but the application moves data into it as it processes the request. Therefore, we need to map an output interface field to the grp-fld array.

• Drag the following fields from the Output Commarea pane to the Interface Fields pane and rename each as indicated:

  Input Commarea Field	Interface Field Name
  int-fld	OutIntFld
  comp-fld	OutCompFld
  dec-fld	OutDecFld
  disp-fld	OutDispFld
  string-fld	OutStringFld
  grp-fld	OutGrpFld

Map a Work Field

Work fields store data that can be passed from one operation to another. This service interface requires a work field to pass the contents of the string-fld commarea field from the InvokeINCCA operation that we are defining now, to the InvokeSECCA operation that we define in the next phase of this tutorial. Therefore, we define the work field as part of the operation that executes first - this InvokeINCCA operation.

1. In the Work Fields pane, right-click; then select New Work Field from the context menu.
2. In the Name field, type WrkString, and type 80 into the Length field; then click OK.

Create a Field Assignment

To assign a value to the WrkString work field, we create a field assignment.

1. In the Assignments pane, right-click and select New Assignment from the context menu.
2. From the Assign to drop-down list, select WrkString.
3. From the Field/Operation1 drop-down list, select dfhcommarea.string-fld.
4. Click OK to save the assignment.
5. Click File > Save CICSCommareaWS.svi to save the completed InvokeINCCA Operation.