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POPrimeFaces: DataTable multiple selection not working
 

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    <p>I don't seem to get multiple selection in PrimeFaces dataTables working.</p> <p>I'm trying to implement a list of clients (dataList) and show their respective bookings in nested dataTables with a possibility to select multiple bookings for billing:</p> <pre><code>&lt;p:dataList value="#{clientController.allClients}" var="client"&gt; &lt;p:column&gt; &lt;p:dataTable value='#{client.bookingsDataModel}' var='item' selection="#{client.bookingsToBill}"&gt; &lt;p:column selectionMode="multiple" /&gt; &lt;/p:dataTable&gt; &lt;/p:column&gt; &lt;/p:dataList&gt; </code></pre> <p>My controller and backing bean classes:</p> <pre><code>public class ClientController { public List&lt;Client&gt; getAllClients() { return clients; } } public class Client { private List&lt;Booking&gt; bookings; private Booking[] bookingsToBill; public LeistungDataModel getBookingsDataModel() { return new BookingsDataModel(bookings); } public Booking[] getBookingsToBill() { return bookingsToBill; } public void setBookingsToBill(Booking[] bookingsToBill) { this.bookingsToBill = bookingsToBill; } } </code></pre> <p>The data model class:</p> <pre><code>public class BookingsDataModel extends ListDataModel&lt;Booking&gt; implements SelectableDataModel&lt;Booking&gt; { public BookingsDataModel(List&lt;Booking&gt; data) { super(data); } @Override public Booking getRowData(String rowKey) { List&lt;Booking&gt; bookings = (List&lt;Booking&gt;) getWrappedData(); for(Booking booking : bookings) { if(("booking_"+booking.getId().toString()).equals(rowKey)) { return booking; } } return null; } @Override public Object getRowKey(Booking booking) { return "booking_"+booking.getId().toString(); } } </code></pre> <p>The browser posts the following data to the server, when I submit the form with my selections: </p> <pre><code>j_idt9%3Aj_idt13%3A0%3Aj_idt15_selection:booking_300,booking_301,booking_302 j_idt9%3Aj_idt13%3A1%3Aj_idt15_selection:booking_566,booking_567 j_idt9%3Aj_idt13%3A2%3Aj_idt15_selection: </code></pre> <p>Also, I found during debugging that the <code>getRowData</code> method of the <code>BookingsDataModel</code> returns the correct <code>Booking</code> objects (the selected ones).</p> <p>However, always empty arrays are passed to the <code>setBookingsToBill</code> of my <code>Client</code> objects. What could be going wrong here?</p> <hr> <p><strong>Update:</strong></p> <p>An empty array is only passed the first <code>Client</code> objects - it doesn't matter if a booking has been selected or not. All other <code>Client</code> objects' <code>setBookingsToBill</code> methods are called with a parameter value of <code>null</code>.</p>
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