selectmanyListBox : how to bind with resultlist

[armahdi]

Hello All!

I need some help with h:selectmanyListBox.

I need to create switchlists (Two lists and you port some elements of one list into other.) Im one list I am binding  it with a list in the entity it self, so I dont have any problems in that list, In the second list I want to list some text field of another entity in a resultlist.
forexample : I have a list of employees in one department (that would be my list 1) the second list will be retrieved from Database as list of employees and I want to list all the names and a user can add employees in the list of employees in the department (my list1) from the list of all employees(list2) and then ofcourse persist it.

this is what I hvae gotten so far:

<h:form id="form1">
         
            <h:selectManyListbox value="#{switchList.list1}" > 
                <f:selectItems value="#{department.employees}" /> //department has a list of Employees
            </h:selectManyListbox>
            <h:panelGroup id="buttonGroup" >
                <h:commandButton value="&gt;&gt;" actionListener="#{switchList.move1to2}"  />
                <h:commandButton value="&lt;&lt;" actionListener="#{switchList.move2to1}"  />
            </h:panelGroup>
            <h:selectManyListbox id="employeeList"  value="#{employeeQuery.resultList}" var="question">
                <f:selectItems value="#{employee.employeeName}"/>// ? this does not work
            </h:selectManyListbox>
            <br/>
                <h:commandButton value="reload" type="submit"/>
            <h:messages/>
        </h:form>

the first list renders fine but when I add the second list with employeeQuery.resultlist its throws an exception:
Expected a child component type of UISelectItem/UISelectItems for component type javax.faces.SelectMany(employeeList). Found null.

I would really appreciate some help. I am really not sure how to get the selectManyListBox to work with a entityQuery object witha  resultList.

Thanks
Syed.

[armahdi]

Note:
var=question is actually  var=employee

.. Does var work here?> its not giving me errors yet..



ok i did try one more thing, i accidentally gave a value=something.name



when something didnt really exist (there was no component with @Name with something as value) and it gave me the same exact error...

So i know that some how employeeQuery is null I think. how can be as employeeQuery is being used in its own CRUD page where I can add employees and delete employees as well. I was hoping that when you do @Name(employeeQuery)
, you should be able to access that component.. Is that not true??

[armahdi]

ok Sorry for one thing: The first selectManyListBox doesnt work either. Now i need to know how to fill them both. It wasnt coming actually i thought that it will when I fill it.

so my first list looks like this now:

 <h:selectManyListbox id="BTypelist" value="#{department.employees}" var ="employee">
                <f:selectItems  value="#{employees.name}" />
            </h:selectManyListbox>

I want to list all the employee names in that department. How can i accomplish that??

please help!!

Thanks

[armahdi]

Ok I did accomplish something:

I made a transient linkedhashmap in the department class and in the getter of this Map i filled it out with

employee.getName()as key , employee as value

and I attached Map with the list component:

<h:selectManyListbox id="BTypelist" value="#{switchList.list1}" >
                <f:selectItems  value="#{department.employeesNames}" />
            </h:selectManyListbox>

I Now i need to link EmployeeQuery.resultlist with the second List. Does any one know how to do that. Or if i need to make a Map where can i make it and then how to refer it.

Thanks.
Syed