Creating JSF Table Matrix with Pagination

Hi all
i faced an issue how to create a matrix with jsf and also to add pagination
i didn't found it in my goggle search so i am providing the solution here:

well what i wanted to achieve is a 2 dimension table , not item per row but ite, per row & column
the code in the jspx page is:

ice:dataTable id="dataTbl" var="item" value="#{bean.rowDataModel}" rows="2"
ice:columns id="columnDataModel" var="column"
value="#{bean.columnDataModel}"
ice:panelGroup
ice:selectBooleanCheckbox value="#{bean.cellValue.select}"
ice:panelGroup
ice:columns
ice:dataTable

so what we have here is list of 30 items as an example
each row has 3 items
each page has up to 2 rows
the rowDataModel is used in order get row data for jsf and its a list with size 7 for example so we will have 4 pages and each we will have 2 rows .
each row has a column with columnDataModel which is again a list size = 3

now to the backendBean code:
in my bean class i have 2 members-->
private DataModel columnDataModel ;
private DataModel rowDataModel ;

in my constracor i have :
dummyList.add(new Item(false)); -- creating some list with items that i want to show in the matrix i will do it 29 more times
rows = dummyList.size()/columns; -- calculate number of total rows for example 7
generateDataModels(); -- create model for each page

and 2 methods which are invoked from the contractor

private void generateDataModels() {
List columnList =new ArrayList();
List rowList = new ArrayList();

for (int i = 1; i <= rows; i++) {
rowList.add(i);
}
rowDataModel = new ListDataModel(rowList);

for (int j = 1; j <= columns; j++) {
columnList.add(j);
}
columnDataModel = new ListDataModel(columnList);
}

this method will create page model list with 3 columns for columnDataModel and 7 for rowDataModel

in order to get each cell item i am calling

public Item getCellValue() {
if (rowDataModel.isRowAvailable() && columnDataModel.isRowAvailable()){
int column = columnDataModel.getRowIndex();
int row = rowDataModel.getRowIndex();
return dummyList.get((row*columns)+column);
}
}
return null;

}

this method will return me from the dummy list which will have like 30 items
the item per page + per row and column

this is why in the jspx i can do

ice:selectBooleanCheckbox value="#{bean.cellValue.select}"

and to get the value of the specific cell

it may be complicated but it works so good :-)

now to add pagination all i added was

ice:dataPaginator for="dataTbl" paginator="true" paginatorMaxPages="2"
f:facet name="first"
ice:graphicImage id="graphicImageId_1" url="/images/First.png" style="border:none;" title="First Page"
f:facet
f:facet name="last"
ice:graphicImage id="graphicImageId_2" url="/images/Last.png" style="border:none; title="Last Page"
f:facet

and so on...

the result was a table like

1 2 (pagination)
[ cell 0/0 ] [cell 0/1] [cell 0/2]
[cell 1/0 ] [cell 1/1] [cell 1/2]

each cell is an item object that i can get its title or image or price ...

hope it help
Dori Waldman