Bug/Bad docs trying to bind SelectItem to bean property of type Collection

Question

Hi,
I've been trying for the best part of the morning to use a selectOneMenu tag and bind the selectItems value to a backing bean property.
The tutorial states that:
"The advantages of using the selectItems tag are as follows:
You can represent the items using different data structures, including Array, Map, List, and Collection. The data structure is composed of SelectItem instances or SelectItemGroup instances."
well I've used Map, and List (which are both covered by Collection anyway...) and they don't work. You go silently to the renderResponse phase.
In all cases the content of my Collection typed property were javax.faces.model.SelectItem instances.
I changed the backing bean property to be of type SelectItem[] instead and suddenly it works fine.
It's as if the binding mechanism isn't able to handle collections?
Is the tutorial wrong or does this just not work?
I'm using 1.0.
Neil

Answer 1

Hi
I have the same problem whereby my backing beans has implemented as a HashSet of attachments for a client. If this is changed to a type, List say ArrayList, everything works correctly with no errors.
client.attachments -> contains a HashSet of attachments
Page goes to display this list and if a Set is used then error below is thrown.
Has anyone experienced this problem and found a solution, it would very help
Thanks
Glenn
Exception :
com.sun.facelets.tag.TagAttributeException: /C:/development/42508/apmweb/pages/client/client_notes_list.xhtml @70,53 tes
t="${not empty note.attachments}" /C:/development/42508/apmweb/pages/client/client_notes_list.xhtml @70,53 test="${not e
mpty note.attachments}": Bean: org.hibernate.collection.PersistentSortedSet, property: 0
at com.sun.facelets.tag.TagAttribute.getObject(TagAttribute.java:235)
at com.sun.facelets.tag.TagAttribute.getBoolean(TagAttribute.java:79)
at com.sun.facelets.tag.jstl.core.IfHandler.apply(IfHandler.java:49)
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
at com.sun.facelets.tag.jstl.core.ForEachHandler.apply(ForEachHandler.java:168)
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:147)
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:147)
at com.sun.facelets.tag.jsf.ComponentHandler.apply(ComponentHandler.java:147)
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
at com.sun.facelets.tag.jsf.core.ViewHandler.apply(ViewHandler.java:94)
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
at com.sun.facelets.compiler.NamespaceHandler.apply(NamespaceHandler.java:49)
at com.sun.facelets.tag.CompositeFaceletHandler.apply(CompositeFaceletHandler.java:47)
at com.sun.facelets.impl.DefaultFacelet.apply(DefaultFacelet.java:95)
at com.sun.facelets.FaceletViewHandler.buildView(FaceletViewHandler.java:400)
at com.sun.facelets.FaceletViewHandler.renderView(FaceletViewHandler.java:434)
at org.apache.myfaces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:352)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:107)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:214)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:120)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:272)
at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at org.apache.myfaces.component.html.util.ExtensionsFilter.doFilter(ExtensionsFilter.java:122)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3020)
at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:121)
at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:1925)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:1848)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1288)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:207)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:179)
Caused by: javax.el.PropertyNotFoundException: /C:/development/42508/apmweb/pages/client/client_notes_list.xhtml @70,53
test="${not empty note.attachments}": Bean: org.hibernate.collection.PersistentSortedSet, property: 0
at com.sun.facelets.el.TagValueExpression.getValue(TagValueExpression.java:73)
at com.sun.facelets.tag.TagAttribute.getObject(TagAttribute.jav
Code :
<c:forEach items="#{WriteableClient.notes}" var="note">          
<c:if test="#{not empty note.attachments}">
</c:forEach >