How to use a single page for create and update mode.

Question

Hi,
I need to develop a single page to be used for both create and update modes.
I am going to use a variable MODE
and i will set this in the emp summary page.
Based on the button clicked by the user i have to render the JSF page.
For tis if the user selects a perticular and cliks on update thn i will pass the empno to the next.
so there in the next i will appy a ViewCreiteria on my View Obj to fetch only that row so that only that emp will be displayed ion update mode.
This is working fione for me.
So now the issue is
when the user clicks on CreatEmp button.
i need to enable my VO for insert operations.
for this i wrote the code like this in the beforePhase event
FacesContext ctx = FacesContext.getCurrentInstance();
ValueBinding valBinding = ctx.getApplication().createValueBinding("#{data}");
BindingContext bContext = (BindingContext) valBinding.getValue(ctx);
DCDataControl dcControl = bContext.findDataControl("DataControl");
Application app = ctx.getApplication();
ApplicationModule am = (ApplicationModule) dcControl.getDataProvider();
System.out.println("After Appmodule initiation");
// get the VO reference and initiate the query
System.out.println("Before Page VO initiation");
PrismDmPageSectionViewImpl vo = (ViewImpl)am.findViewObject("View");
//ViewRowImpl row = (ViewRowImpl) vo.createRow();
/* TO CREATE AN EMPTY ROW*/
Row row=vo.createRow();
System.out.println("New Row is created");
//vo.createKey(row);
vo.insertRow(row);
vo.setCurrentRow(row);
By doing this a new empty page is rendered.
But when i fill up the values and click on ok.. i am getting the error like this..
JBO-27023: Failed to validate all rows in a transaction.
JBO-27027: Missing mandatory attributes for a row with key null of type View3
JBO-27014: Attribute Id in View3 is required
JBO-27014: Attribute PageeId in View3 is required
Please point me out where i am missing.
Thanks

Answer 1

Hi,
In my opinion you are over complicating things.
This is what I do for using the sme page as both create and update without all this code.
1) Create a browse page containing a an adf table with a select one component bound to your view object.
2) Create an additional edit page containing only an edit form containing fields of your view object that your users must enter in order to add or edit rows.
3) Link the pages in the JSF diagram with an "edit" navigation case from browse to edit page and a "return" navigation case from edit to browse (make sure that redirect option is NOT set on both cases)
4) Remove the submit button from the edit page and add two application module bindings for the commit and rollback operations as command buttons in the form footer facet. Make sure that both buttons has an action of return and that their disabled property is set to false. You will probably change their labels to ok and cancel respectively.
5) Drop a create action for your view object from the data control palette inside your page as a command button and set the action property to edit also.
3) Set the action property of the view button to edit
This should basically work without any code from your part. -- at least it does so for me -- if you like to make it a bit more funcy you may add am action listener inside your buttons and set a requeScope variable for example #{requestScope.editing} to true or false depending on the button clicked. Then add a title to your page with a value like #{requestScope.editing == true ? 'Editing record' : 'Adding a new record'}..
Hope that helps.
Thanassis