Business components based on Oracle views

Question

I am trying to create business component objects in a master-detail relationship based on Oracle views rather than on the underlying tables. The wizard does not create associations or links since the views have no foreign keys. I created the associations and links myself, but I am unable to add them to the data model. I am using the beta v5.0, but I had the same problem in v3.23. Can anyone help?
Thanx in advance
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Answer 1

Here are the steps I just tried with JDevi 9i Beta:
[list]
[*]SQLPLUS SCOTT/TIGER
[*]CREATE VIEW DEPT_VIEW AS SELECT * FROM DEPT;
[*]CREATE VIEW EMP_VIEW AS SELECT * FROM EMP
[*]On my workspace: Right-mouse / New / Empty Project
[*]On my new project: Right-mouse / New Business Components...
[*]Next, to the connection panel
[*]Set the connection, and next
[*]Pick a package name and next
[*]Tick the [x] Views checkbox, and select EMP_VIEW and DEPT_VIEW
[*]Uncheck the "View Objects and View Links" box, since we don't want these created automatically.
[*]Click (Finish)
[*]In navigator, select my "DeptView" entity and edit it (the view is called "DeptViewView").
[*]Click on the "Attributes" tab
[*]Select "Rowid" in the attribute list
[*]Click the (Remove) button
[*]Select the "Attribute Settings" tab, and select the "Deptno" attribute.
[*]Check the [x] Primary Key checkbox for "Deptno"
[*]Click (Ok).
[*]Repeat steps above on "EmpView" entity to remove Rowid attribute and make "Empno" attribute the primary key. (NOTE: Since views don't have constraints, we couldn't detect the primary key constraint, so we default the ROWID to be the primary key in the wizard).
[*]In navigator, select my "DeptView" entity, and right-mouse / New Association...
[*]Using the wizard I create a association based on the "Deptno" attribute, and with a 1 to many cardinality.
[*]I right-mouse on "DeptView" entity and select New Default View Object... to create the "DeptViewView" view object.
[*]I right-mouse on "EmpView" entity and select New Default View Object... to create the "EmpViewView" view object.
[*]I right-mouse on the DeptViewView view object and select New View Link...
[*]I create a new view link between DeptViewView and EmpViewView
[*]On the "Source Attributes" panel, I select the "Dept2Emp" association I created above, and click the ">" to shuttle it to the selected list.
[*]Click next and notice that by selecting the association, it automatically picked the right attributes for both sides for the view link automatically.
[*]click next, then (Finish)
[*]I right-mouse on my package and select New Application Module...
[*]On the datamodel panel, I see a tree view of "Available View Objects like this:
+ Project 3
|
+---[-] Package3
|
+---[SQL] DeptViewView
| |
| +--[SQL] EmpViewView via MyViewLink
|
+---[SQL] EmpViewView[*]I select DeptViewView in the available list and click ">" to shuttle it to the selected list in my data model
[*]In the SELECTED list, I select the DeptViewView that I just added, to make it the current view in the selected list.
[*]Back in the available list, I select the "EmpViewView via MyViewLink" and shuttled it to the selected list as a detail of the current view in the selected list.
[*]I click finish
[*]I right-mouse on my AppModule and select "Test..." to build and test my appmodule.
[*]I click (Connect) on the tester start page
[*]In the tester, I right mouse on "MyViewLink" and select "Show".
[list]
After these steps, I see data correctly.
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