Importing a DDIC Structure

You can import the following DDIC structures into the Service Builder:

• Views
• Database tables
• Structures

To import a DDIC structure into a data model, proceed as follows:

1. Log onto the SAP NetWeaver Gateway system.
2. Open transaction SEGW.

   The SAP NetWeaver Gateway Service Builder opens.

3. Create a new project.
4. Right-click the Data Modelfolder in the open project and select  Import  DDIC Structure .

   The Wizard Step 1 of 3: Import from DDIC Structure—Create an Entity Type or Complex Type screen of the wizard opens.

5. Do the following in the Import from DDIC Structure window:
   1. Enter a name for the new entity type/complex Type in the Name field.
   2. Select either Entity Type (imports the selected structure into your data model as an entity type) or Complex Type (imports the selected structure into your data model as a complex type).
   3. In the ABAP Structure field, enter the ABAP structure name or use input help to get assistance.
      Note

      Input help (F4 Help) is not available for class/interface-based type structures.

   4. Select Create Default Entity Set to create an entity set for the entity created.
   5. Click Next to proceed. If any entry is incorrect, an error message is displayed.

      If the validation check is successful, the Wizard Step 2 of 3: Import from DDIC Structure-Select Parameter(s) screen of the wizard opens.

      Based on the selected ABAP structure name in the Wizard Step1 of 3, you can see a detailed display of the components of the structure as a tree.

      Following columns are editable in this window:

      • Data Source Parameter
      • Assign Structure
      • Import Search Help

      The column Search Help displays the search help associated with the fields.

6. Expand the Data Source Parameters and select the required structures, tables, and properties. You can also use (Select All) and (Deselect All) to perform a mass select and deselect.
   • On selecting the nested structure or table, the corresponding Assign Structure checkbox also gets selected by default. If you select individual property in nested structure or table Assign Structure checkbox should be selected manually.
   • If respective Assign Structure checkbox is not selected then all the selected properties will be created under one root as a flattened structure.
   • Complex Type are created if structures are imported and entity types are created if tables are imported. In addition, DDIC assignment will be retained for the newly created artifacts and DDIC structure is assigned if Assign Structure is selected.
7. The Import Search Help checkbox will be enabled if a search help is associated with the respective Data Source Parameter. The associated search help is displayed in Search Help column. You can import this search help by selecting respective checkbox.
   Note

   The imported search help will be created as a separate entity in Data Model. End of the note.

8. Click Next .

   The Wizard Step 3 of 3: Import from DDIC Structure-Modify Entity Type screen of the wizard opens.

   Based on the selection from Wizard Step 2 of 3, the Service Builder lists an overview of all fields in the structure you have selected to import as an entity type/complex type. From this list, select the key property.

9. The Modify Entity Type screen provides the following editable and non-editable information:

   Table 1: Modify Entity Type Screen Details

   Name	Description
   ISEntity	If the property belongs to the entity type, this check box is selected. If it is not selected, the property belongs to the complex type.	Non-Editable
   Complex/Entity Type Name	This is the name of the property. It can either be a complex type or entity type	Editable
   ABAP Name	This is the technical name. This will not be displayed in the metadata.	Non-Editable
   Is Key	Indicates whether the imported property is to be imported as a key of the entity type. Each entity type must define at least one key property.	Editable
   Type	Type of property.	Editable
   Name	Name of the property	Editable
   Label	Name of the property	Editable

   Note

   If Create Default Entity Set option in Wizard Step 1 of 3 is selected, then entity sets are created for all the entities and mapping proposal are created for Query and Read operations for the selected entities created from Search Help.

   Entity sets will be created with the suffix name set. For example, If Entity type name is E1 then the default entity set name will be E1Set. You can choose not to create entity sets and mapping proposal by deselecting this box.

10. Click Finish.

• The model contents are transformed from the wizard to the data model as a new entity type together with its properties and entity sets are also created.
• The selected ABAP Structure name is displayed in the ABAP Structure Type Name field of the imported entity type/complex type.
• Mapping proposal for query and read operation, for the entities created from Search Help, are created. This can be confirmed by expanding Service Implementation folder. Open the new entity sets created. Expand GetEntity (Read) and GetEntitySet (Query) operations. Double click the Mappingnode to open. It displays mapping proposal in the mass maintenance view.

There might be instances when some properties were not selected during an import of DDIC structure. In such cases, the Import properties function can be used to import more properties from the same data source. To import properties see Importing Properties section in Importing a Data Source (RFC/BOR Interface). For more information, see Importing a Data Source (RFC?BOR Interface)