6:10 p.m.
Hi,
I am having some problems with using a <f:selectItems> element
inside<h:selectOneMenu>.
To start off I created a Jbpm4Jsf tag/class that loads up a list of users, which I have
tried to put into a Map and now a List. I return this Map/List as the target inside the
page and then place the target as the SelectItems value.
Please see code below
| <ga:responseActions>
| <j4j:listAcademics target="#{academics}"/>
| </ga:responseActions>
|
| <jbpm:datacell>
| <f:facet name="header">
| <h:outputText value="Supervisor"/>
| </f:facet>
| <h:selectOneMenu
value="#{var['potentialsupervisor']}">
| <f:selectItems value="#{academics}"/>
| </h:selectOneMenu>
| <!-- <h:inputText
value="#{var['potentialsupervisor']}"/>-->
| </jbpm:datacell>
|
However, when I submit my form, it throws a bunch of exceptions
| javax.servlet.ServletException
| javax.faces.webapp.FacesServlet.service(FacesServlet.java:256)
| org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
|
|
| root cause
|
| java.lang.IllegalArgumentException
| javax.faces.component.SelectItemsIterator.next(SelectItemsIterator.java:166)
| javax.faces.component.SelectItemsIterator.next(SelectItemsIterator.java:49)
| javax.faces.component.UISelectOne.matchValue(UISelectOne.java:165)
| javax.faces.component.UISelectOne.validateValue(UISelectOne.java:137)
| javax.faces.component.UIInput.validate(UIInput.java:868)
| javax.faces.component.UIInput.executeValidate(UIInput.java:1071)
| javax.faces.component.UIInput.processValidators(UIInput.java:663)
| javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
| javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
| javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
| javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
| javax.faces.component.UIForm.processValidators(UIForm.java:229)
| javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
| javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
| javax.faces.component.UIComponentBase.processValidators(UIComponentBase.java:1021)
| javax.faces.component.UIViewRoot.processValidators(UIViewRoot.java:662)
|
com.sun.faces.lifecycle.ProcessValidationsPhase.execute(ProcessValidationsPhase.java:100)
| com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:248)
| com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
| javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
| org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
|
|
The tag/class I use to list all the academics is the following
| public final class ListAcademicsActionListener implements JbpmActionListener {
| private final ValueExpression targetExpression;
|
| public ListAcademicsActionListener(final ValueExpression targetExpression) {
| this.targetExpression = targetExpression;
| }
|
| public String getName() {
| return "listAcademics";
| }
|
| @SuppressWarnings ({"unchecked"})
| public void handleAction(JbpmJsfContext context, ActionEvent event) {
| try {
| final FacesContext facesContext = FacesContext.getCurrentInstance();
| final ELContext elContext = facesContext.getELContext();
| final Collection<SelectItem> academicsList = new
Vector<SelectItem>();
| ... //queries DB some academics names and their userID
|
| while(academics.next()){
| SelectItem academic = new SelectItem(lecturerLogin, lecturer);
| academicsList.add(academic);
| }
| targetExpression.setValue(elContext,
Collections.unmodifiableCollection(academicsList));
| context.selectOutcome("success");
| }
|
So far all the lecturer's names and logins come up fine, but the problem is when I
submit the form. I've searched around and there seems to be similar problems, but
never quite the same. Any help is appreciated.
Thanks
David
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