Question

Its been quite some time since i have started developing web pages using JSF but i am still learning most of the stuff. Now I have an interesting question

When I have the values those to be displayed in a data table in the ArrayList and I am adding those ArrayList objects in another array list , so now how will i be able to display them in a data table.

I am doing this since , i need my table to be so dynamic so that i dont know how many columns will i be getting in the result set to be displayed in the page, hece i cannot have a Bean obj for storing my variable values. So i have decided to have something like

ArrayList<ArrayList<String>>

ArrayList<String> - Values for Each row

Does this have a solution that can be provided int he jsf page

Answer 1

Use either plain HTML with a nested <ui:repeat>

<table>
    <ui:repeat value="#{bean.rows}" var="row">
        <tr>
            <ui:repeat value="#{row}" var="column">
                <td>#{column}</td>
            </ui:repeat>
        </tr>
    </ui:repeat>
</table>

or grab a 3rd party component library which has sort of a <x:columns> tag like PrimeFaces with <p:columns> and Tomahawk with <t:columns>.

<p:dataTable value="#{bean.rows}" var="row">
    <p:columns value="#{row}" var="column">
        #{column}
    </p:columns>
</p:dataTable>

Either way, you can even keep the columns in a separate list.