Re: How to populate a map of lists in an action form?

[Daniel Lobo]

I'm still as you Rick. The only solution i've found, as I said in the 
first email, is create a new List class, child of ArrayList, with a 
getter and a setter to get the list itself. This is more or less make 
the list a bean. In your example you could access to an employee like this:

testForm.bigList[1].list[2].list[0].lastName
Wich is not very elegant at all.
Rick Reumann escribió:
Daniel's question still has me perplexed? I'm still stumped on how to 
write the inputs for html and the proper ActionForm methods that would 
accomodate a situation where you needed to update Maps or Lists that 
are nested deeply. I understand how to do it when you have access 
methods to the Lists that are nested with beans - for example you have 
Company bean that has getDepartments which returns a list of 
Department beans and each dept bean has getEmployees. I can handle the 
above fine and it's how I typically orgainize by data. I'm still 
confused though how you handle a situation where someone simply added 
Lists to other Lists and you need to update the contents of the nested 
information.

For exmaple:
List bigList = new ArrayList();
List companiesList = new ArrayList();
List employees = new ArrayList();
employees.add(new Employee(...));
employees.add(new Employee(...));
employees.add(new Employee(...));
companiesList.add( employees )
List employees2 = new ArrayList();
employees2.add(new Employee(...));
employees2.add(new Employee(...));
employees2.add(new Employee(...));
companiesList.add( employees2 )
//do above for another companiesList2
bigList.add( companiesList1 );
bigList.add( companiesList2 );
How do you set up an input box to handle updating an Employee in a 
Company in the masterList

testForm.bigList[1][2][0].lastName
//2nd company in bigList, 3rd list of employees, 1st employee
Daniel Lobo wrote the following on 5/3/2005 6:19 AM:
Hi,
I have an action form with a map that can be accessed with getters 
and setters. That map holds lists of elements. The problem is how to 
populate that lists from the html form . I've tried with:

<input name="elementsMap(0).[0]" value="foo">
and
<input name="elementsMap(0)[0]" value="foo">
but doesn't work.
However, i've implemented a new class child of ArrayList that adds 
this two methods:

   public List getList()
   {
       return this;
   }
     public void setList(List list)
   {
       clear();
       addAll(list);
   }
And using this class in the map I can do from javascript:
<input name="elementsMap(0).list[0]" value="foo">
And the population of the ActionForm works properly. ¿Does somebody 
know how to fix this problem without the use of this two "ugly" methods?

Thanks.
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    Daniel Lobo Fernández
SCADAS y Sistemas de Información
  E-mail: [EMAIL PROTECTED]
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