[jboss-user] [JBoss Seam] - selectManyCheckbox

[kgoedert]

Hi,

I´m trying to populate a selectManyCheckbox and I´m getting the following exception:
  | java.lang.IllegalArgumentException: Expected a child component type of UISelectItem/UISelectItems for component type javax.faces.SelectMany(j_id47).  Found null.
  | 	at com.sun.faces.renderkit.RenderKitUtils.getSelectItems(RenderKitUtils.java:357)
  | 	at com.sun.faces.renderkit.html_basic.SelectManyCheckboxListRenderer.encodeEnd(SelectManyCheckboxListRenderer.java:103)
  | 	at javax.faces.component.UIComponentBase.encodeEnd(UIComponentBase.java:836)
  | 	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:896)
  | 	at javax.faces.render.Renderer.encodeChildren(Renderer.java:137)
  | 	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
  | 	at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
  | 	at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
  | 	at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:199)
  | 	at org.richfaces.renderkit.html.PanelRenderer.doEncodeChildren(PanelRenderer.java:194)
  | 	at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
  | 	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
  | 	at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
  | 	at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
  | 	at org.richfaces.renderkit.TabRendererBase.encodeChildren(TabRendererBase.java:113)
  | 	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
  | 	at org.ajax4jsf.renderkit.RendererBase.renderChild(RendererBase.java:282)
  | 	at org.ajax4jsf.renderkit.RendererBase.renderChildren(RendererBase.java:262)
  | 	at org.richfaces.renderkit.html.TabPanelRenderer.doEncodeChildren(TabPanelRenderer.java:266)
  | 	at org.richfaces.renderkit.html.TabPanelRenderer.doEncodeChildren(TabPanelRenderer.java:261)
  | 	at org.ajax4jsf.renderkit.RendererBase.encodeChildren(RendererBase.java:121)
  | 	at javax.faces.component.UIComponentBase.encodeChildren(UIComponentBase.java:812)
  | 	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:886)
  | 	at javax.faces.component.UIComponent.encodeAll(UIComponent.java:892)
  | 	at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:577)
  | 	at org.ajax4jsf.application.ViewHandlerWrapper.renderView(ViewHandlerWrapper.java:108)
  | 	at org.ajax4jsf.application.AjaxViewHandler.renderView(AjaxViewHandler.java:216)
  | 	at com.sun.faces.lifecycle.RenderResponsePhase.execute(RenderResponsePhase.java:106)
  | 	at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
  | 	at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:144)
  | 	at javax.faces.webapp.FacesServlet.service(FacesServlet.java:245)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.jboss.seam.web.ExceptionFilter.doFilter(ExceptionFilter.java:64)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.jboss.seam.web.RedirectFilter.doFilter(RedirectFilter.java:44)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.ajax4jsf.webapp.BaseXMLFilter.doXmlFilter(BaseXMLFilter.java:141)
  | 	at org.ajax4jsf.webapp.BaseFilter.doFilter(BaseFilter.java:281)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
  | 	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
  | 	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
  | 	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
  | 	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
  | 	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
  | 	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
  | 	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
  | 	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
  | 	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
  | 	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
  | 	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:241)
  | 	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
  | 	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:580)
  | 	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
  | 	at java.lang.Thread.run(Unknown Source)
  | 
  | 

In my page I have:

  | <h:selectManyCheckbox value="#{company.category}" required="true">
  | 		    									<s:selectItems value="#{companyGeneralAction.categories}" var="cat" label="#{cat.name}"/>
  | 		    									<s:convertEntity/>
  | 		  									</h:selectManyCheckbox>
  | 
  | My "company" bean has an attribute like this:
  | 
  | 
  |   |     private Set<EntityCategory> category;
  |   | 
  | 
  | The EntityCategory is a entity bean like this:
  | 
  | 
  |   | @Name("entityCategory")
  |   | @Entity
  |   | 
  |   | public class EntityCategory implements Serializable {
  |   |     private static final long serialVersionUID = 1L;
  |   |     private Long id;
  |   |     private String name;
  |   |     private Set<Company> entity;
  |   | 
  | 
  | And in my session bean I have:
  | 
  | 
  |   | @Name("companyGeneralAction")
  |   | @Stateful
  |   | @Scope(ScopeType.SESSION)
  |   | public class CompanyAction implements ICompanyAction {
  |   |     @In(required = false)
  |   |     @DataModelSelection
  |   |     @Out(required = false)
  |   |     private Company company;
  |   |     @In(required = false)
  |   |     private RegistrationType registrationType;
  |   |     @Out(required = false)
  |   |     private List<EntityCategory> categories;
  |   |     @DataModel
  |   |     private List<Company> companyList = new ArrayList<Company>();
  |   |     @In
  |   |     private EntityManager entityManager;
  |   | 
  | 
  | What I want is to populate a select many checkbox with all the EntityCategory elements I have in the database. Where I´m going wrong here?
  | 
  | Thanks

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