Problem with binding of a selectManyCheckbox inside a dataTable

Hi,
first i want to point out that my english is not the best. :)
A german version is followed at the end of the english text.
I have a class "MyClass" with few attributes like:
private long id;
private String text;
private Set<MyClass2> childs;
An a second class "MyClass2" wich also have some attributes:
private long id;
private String text;
Now i have a List with lots of objects from typ "MyClass":
List myList = new ArrayList();
// Sample Data!!
for (int i=0; i<100; i++)
MyClass1 m1 = new MyClass1();
m1.setId(i);
m1.setText("MyClass1 Line " + i);
// Now add some "childs":
for (int j=0; j<i*2; j++)
MyClass2 m2 = new MyClass2();
m2.setId( i );
m2.setText("Sample "+ i);
m1.getChilds().add(m2);
myList.add ( m1 );
So now i want to show the ID and text every Object of MyClass1 on my "test.jsp" (width JSF Tags).
The Collections inside this class should display as checkboxes (value = id, label = text).
Sample:
ID: +1+ TEXT: MyClass1 Line 1
CHECKBOXES:
[x] Sample 0
[x] Sample 1
ID: +2+ TEXT: MyClass1 Line 2
CHECKBOXES:
[x] Sample 0
[x] Sample 1
[x] Sample 2
[x] Sample 3
Okay i think you know what i mean. ;-)
I tryed it also with a dataTable to iterate in "myList" and use a selectOneMenu with selectItems to generate the checkboxes.
Here is the code:
<h:dataTable value="#{myBean.myList}" var="rowInstance" binding="#{myBean.dataTable}" id="dataTable">
<h:column>
<h:outputText value="ID: #{rowInstance.id}" />
<h:outputText value="TEXT: #{rowInstance.text}" />
</h:column>
<h:column>
<h:selectManyCheckbox id="cbox" styleClass="checkbox">
<f:selectItems value="#{myBean.childs}"/>
</h:selectManyCheckbox>
</h:column>
</h:dataTable>
Maybe you see the that i've used childs in the selectItems.
This is a methode like that:
public SelectItem[] getChilds()
MyClass1 mc1 = (MyClass1) dataTable.getRowData();
// now i iterate the childs and make for each a SelectItem()
Also you maybe see that i have no binding on selectManyCheckbox, because i have no idea how it works. :-)
I've tried to bind it to a String[] but and the end this String[] always contain the last low.
My Question is now:
When the user pressed the submit Button how can i figure out which Checkboxen the user clicked ?
Thank you a lot.
Now the german version (surley better explained):
Hallo nochmal,
ich habe versucht auf englisch mein Problem zu schildern.
Was mit sicherheit nicht zu 100% gelungen ist, deshalb hier noch mal eine deutschsprachige Version (maybe some germans out there).
Wie oben abgeblidet habe ich im Prinzip zwei Klassen.
Die erste Klasse "MyClass1" hat eine Collection die Objekte von der Klasse "MyClass2" enth�lt.
Nun m�chte ich auf meiner JSP Seite die JSF Tags benutzt eine Liste von Objekten (die vom Typ "MyClass1" sind) abbilden.
Die Collection innerhalb dieser Klasse soll als Checkboxen dargestellt werden.
Ich habe es ohne gro�e Probleme hinbekommen, dass er das so anzeigt wie ich das m�chte.
Nur habe ich z.Z. noch Probleme damit wie ich sp�ter herausfinde, welche der Checkboxen denn nun angew�hlt sind.
Normalerweise w�rde man ja ein binding machen, so k�nnte man alle ausgew�hlten Checkboxen (getSelectedValues()) ja bekommen.
Da aber die Anzahl der Objekte immer unterschiedlich ist kann ich nicht die entsprechenden Variablen anlegen.
Deshalb die Frage: Wie bekomme ich mit welche der Checkboxen ausgew�hlt wurden? Wie muss das binding aussehen?
Vielen Dank.
Greetings from Germany. :)

Just bind it to the row object.
JSF<h:dataTable value="#{myBean.myDataList}" var="myData">
    <h:column>
        <h:selectManyCheckbox value="#{myData.selectedItems}">
            <f:selectItems value="#{myData.selectItems}" />
        </h:selectManyCheckbox>
    </h:column>
</h:dataTable>MyDataprivate List<String> selectedItems; // + getter + setter
private List<SelectItem> selectItems; // + getter

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