Ok, I have a bean that needs to populate a table so I was trying to
work with ListDataModel and I can get it to work fine but where I'm
running into 'best practice' difficulties is after doing an update to
an item in the table, I want a fresh population of the ListDataModel
to be used on the resulting JSP.
Here's the problem...
Say I have in my EmployeeListBean ...
private static ListDataModel model = new ListDataModel(
EmployeeService.getEmployees() );
public ListDataModel getEmployeesModel() {
return model;
}
I can use this on a jsp like...
<h:dataTable var="emp" value="#{employeesListBean.employeesModel}" >
However, now I click on a link to edit a row in the table and I pull
the row in a resulting action...
employee = (EmployeeVO)getEmployeesListBean().getEmployeesModel().getRowData();
I then edit this employee on a resulting editForm and then when I
submit that form, I want to repopulate the ListDataMode from the
database.
I could just add a method to the EmployeeListBean...
public void populateListDataModel() {
model = EmployeeService.getEmployees();
}
and I can call that after I do an update. The problem is I think this
is a really ugly solution. After doing an upate I shouldn't have to
remember to populate some other dataModel in some other class. The
EmployeeListBean should be able to stand by itself.
Ideally when I do...
<h:dataTable var="emp" value="#{employeesListBean.employeesModel}" >
I want a FRESH list of the employeesModel coming from my Service class
(backend call to populate the list),
If I alter the method getEmployeesModel() to look like:
public ListDataModel getEmployeesModel() {
model = EmployeeService.getEmployees();
}
that'll work fine for the list population on the JSP, but I'll of
course still need a method to get back the actually model that is on
the JSP for when I click on the row and need to get that actual model
that has the row I selected?
How do I set this object up so that I have a method that populates a
fresh list on my JSP and also has a handle to get the listModel so
that I can call it and get the rowData I need?
