Errors when trying to edit JSF admin pages with custom compo
I have successfully added an attribute to the user profile object, but I want to be able to pull a list from a database and display it back to the user so that they may select from it.
<h:selectOneMenu id="company" value="#{manager.uiUser.attribute.company}" required="#{metadataservice.company.required}">
<f:selectItems value="#{customerManager.customerNames}" />
</h:selectOneMenu>
Backing bean:
package com.mycompany.ui;
import java.util.ArrayList;
import java.util.List;
import javax.faces.model.SelectItem;
import com.mycompany.data.Customer;
import com.mycompany.service.CustomerManager;
public class CustomerBean {
private List<SelectItem> customerNames;
public void setCustomerNames(List<SelectItem> customerNames) {
this.customerNames = customerNames;
}
public List<SelectItem> getCustomerNames() {
if (customerNames == null) {
customerNames = initNames();
}
return customerNames;
}
private List<SelectItem> initNames() {
List<SelectItem> custNamesSelectItem = new ArrayList<SelectItem>();
try {
List<Customer> customerListFromDb = CustomerManager.getAllCustomers();
for (Customer c : customerListFromDb) {
custNamesSelectItem.add(new SelectItem(c.getId(), c.getName()));
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return custNamesSelectItem;
}
}
When I access the page, I get the following exception. What causes this, since I am returning a list of SelectItem objects?
Caused by: java.lang.IllegalArgumentException: Collection referenced by UISelectItems with binding '#{customerManager.customerNames}' and Component-Path : {Component-Path : [Class: javax.faces.component.UIViewRoot,ViewId: /WEB-INF/jsf/admin/editProfile.xhtml][Class: javax.faces.component.html.HtmlForm,Id: _id26jbpns_2fadmin_2fMembers_2fIdentityAdminPortletWindowsnpbj][Class: javax.faces.component.html.HtmlPanelGrid,Id: _id43jbpns_2fadmin_2fMembers_2fIdentityAdminPortletWindowsnpbj][Class: javax.faces.component.html.HtmlSelectOneMenu,Id: company][Class: javax.faces.component.UISelectItems,Id: _id85jbpns_2fadmin_2fMembers_2fIdentityAdminPortletWindowsnpbj]} does not contain Objects of type SelectItem
at org.apache.myfaces.shared_impl.util.SelectItemsIterator.next(SelectItemsIterator.java:184)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.internalGetSelectItemList(RendererUtils.java:451)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.getSelectItemList(RendererUtils.java:428)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.internalRenderSelect(HtmlRendererUtils.java:294)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlRendererUtils.renderMenu(HtmlRendererUtils.java:267)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlMenuRendererBase.encodeEnd(HtmlMenuRendererBase.java:59)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
at org.apache.myfaces.shared_impl.renderkit.RendererUtils.renderChild(RendererUtils.java:419)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.renderChildren(HtmlGridRendererBase.java:229)
at org.apache.myfaces.shared_impl.renderkit.html.HtmlGridRendererBase.encodeEnd(HtmlGridRendererBase.java:101)
at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:539)
at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:242)
at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
at com.sun.facelets.tag.jsf.ComponentSupport.encodeRecursive(ComponentSupport.java:239)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:540)
at org.apache.myfaces.lifecycle.RenderResponseExecutor.execute(RenderResponseExecutor.java:41)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:132)
at org.apache.myfaces.portlet.MyFacesGenericPortlet.facesRender(MyFacesGenericPortlet.java:498)
... 236 more