I would recommend reviewing the javadocs for UIData.getValue().
You will need to provide a custom DataModel implementation for Sets.
On 12/25/2009 2:10 AM, webtier_at_javadesktop.org wrote:
> Hi,
>
> I wanna use the h:dataTable with a java.util.Set as list value like this:
>
> Bean:
>
> @ManagedBean
> @RequestScoped
> public class MyBean {
> private Set<MyDomain> myDomains;
> public MyBean() {
> myDomains = new LinkedHashSet<MyDomain>();
> myDomains.add(new MyDomain("1", "eins"));
> myDomains.add(new MyDomain("2", "zwei"));
> myDomains.add(new MyDomain("3", "drei"));
> myDomains.add(new MyDomain("4", "vier"));
> }
> public Set<MyDomain> getMyDomains() {
> return myDomains;
> }
> public void setMyDomains(Set<MyDomain> myDomains) {
> this.myDomains = myDomains;
> }
> }
>
> h:dataTable
>
> <h:dataTable value="#{myBean.myDomains}" var="i">
> <h:column>
> <h:outputText value="#{i.key}" />
> </h:column>
> <h:column>
> <h:outputText value="#{i.value}" />
> </h:column>
> </h:dataTable>
>
>
> I get the following exception:
> javax.el.PropertyNotFoundException: /index.xhtml @11,37 value="#{i.key}": Property 'key' not found on type java.util.LinkedHashSet
> at com.sun.faces.facelets.el.TagValueExpression.getValue(TagValueExpression.java:104)
> at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:190)
> at javax.faces.component.ComponentStateHelper.eval(ComponentStateHelper.java:178)
> at javax.faces.component.UIOutput.getValue(UIOutput.java:168)
>
> BTW with java.util.List everything works fine!
>
> Any ideas?
> Is that a bug (IMO it must be ;-))
>
> Alex
> [Message sent by forum member 'alexander_bell' (Alexander.Bell_at_j4fry.org)]
>
> http://forums.java.net/jive/thread.jspa?messageID=377473
>
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