Creating CMP entity beans from (Ipower web hosting) an imported data
Creating CMP entity beans from an imported data source 5 Now you can return to your entity bean, add new fields, and map those fields to the columns in the table you established a reference to. For example, here a new field named department_no has been added to the Employee bean. The inspector shows the new field being mapped to the DEPT_NO column in the DEPARTMENT table. Note You can also do multiple table mapping using the EJB Module DD editor. Select the entity bean in the structure pane when the EJB Module DD editor is visible and click the WebLogic Persistence tab to see the page where you select the multiple table mapping option. Click the Add button to display the Table Map editor. Note that a Field Groups box appears in a WebLogic entity bean inspector. A field- group element represents a subset of the container-managed persistence fields and the container-managed relationship fields of an entity bean. For more information about field groups and how they are used, consult your WebLogic documentation. Note Field groups are applicable to CMP 2.0 entity beans only. To add a field group, 1 Click the Add button. The Field Group editor appears: 2 Give the new group a name in the Field Group Name field. 3 Check the fields you want to be included in the group. 4 Click OK. Chapter 6: Creating entity beans with the EJB designer 51
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