2 Replies Latest reply on Jun 3, 2010 5:03 AM by ajaykumar kadiyala

    java.lang.UnsupportedOperationException java.util.AbstractList.add(Unknown Source)     java.util.AbstractList.add(Unknown Source) less than 3.3.2, for a4j:support event=”onclick”

    ajaykumar kadiyala Novice

      Hi All,

      The code  I was tested and working fine with richfaces-demo-3.3.2.GA-tomcat6.

      The following code is.

       

      Stationx.xml

      <?xml version="1.0"?>

            <station name="RichRadioStation" type="stationName">

            <feed date="yesterday" type="date" >

                        <song time="09:00" type="time" key="administratorUserProfileNew" >      AAAAAAAAAAAA</song>

                        <song time="10:03" type="time" key="administratorUserProfileView">      BBBBBBBBBBBB</song>

                        <song time="10:03" type="time" key="administratorUserProfileModify">hhhhhhhhh</song>                

                  </feed>

                  <feed date="today" type="date" >

                        <song time="09:00" type="time" key="tadministratorUserProfileNew" >      FFFFFFF</song>

                        <song time="10:03" type="time" key="tadministratorUserProfileView">      dddddddddd</song>

                        <song time="10:03" type="time" key="tadministratorUserProfileModify">qqqqqqq</song>                

                  </feed>

            </station>

       

      Library.java
      public class Library {
      /**
        *
        */
      private static final long serialVersionUID = -3530085227471752526L;
      //private Map artists = null;
      private  List menus=null;

      private

       

      TreeNode treeData;

      private  Map selectedMenus=null;//A4j : suppoted selections
      public void takeMenuAccess()
      {

        FacesContext context = FacesContext.getCurrentInstance();
        String currentMenuItems = (String) context.getExternalContext()
          .getRequestParameterMap().get("m");
       
        System.out.println("----------"+currentMenuItems);

        String menu=(String)selectedMenus.get(currentMenuItems);
        if(menu==null){
        menus.add(currentMenuItems);

      // Here java.lang.UnsupportedOperationException java.util.AbstractList.add(Unknown Source)                java.util.AbstractList.add(Unknown Source)    selectedMenus.put(currentMenuItems, currentMenuItems); lessthan 3.3.2 ,
        }
        else
        {
         selectedMenus.remove(menu);


        public void myexpand (){
         menus=new ArrayList();
         Set s=selectedMenus.entrySet();
               Iterator it=s.iterator();

               while(it.hasNext())         {

                   Map.Entry m =(Map.Entry)it.next();
                   String value=(String)m.getValue();
                   menus.add(value);
               }

        ;
        }
       
      public Library()throws Exception {
        // songsList = new ArrayList<Song>();
        // songsList.addAll(getLibraryAsList());
        tempMenus=new ArrayList();
        menus=new ArrayList();
        newMode="newMode";
        selectedMenus=new HashMap();
        FacesContext context = FacesContext.getCurrentInstance();

         treeData =XmlTreeDataBuilder.build(new InputSource(getClass().getResourceAsStream("/Stations.xml")));
        
      }
      public TreeNode getTreeData() {
        return treeData;
      }
      public void setTreeData(TreeNode treeData) {
        this.treeData = treeData;
      }
      public List getMenus() {
        return menus;
      }
      public void setMenus(List menus) {
        this.menus = menus;
      }

      }

       

      <

      rich:tree id="treeXML" value="#{library.treeData}" var="vardata" nodeFace="#{vardata.attributes['type']}" switchType="client" nodeSelectListener="#{library.processSelection}" preserveDataInRequest="true"

       

      >

       

      <rich:treeNode type="stationName" nodeSelectListener="#{library.processSelection}">

       

      <h:outputText value="#{vardata.attributes['name']}" />

       

      </rich:treeNode>

       

      <rich:treeNode type="date" nodeSelectListener="#{library.processSelection}">

       

      <h:outputText value="#{vardata.attributes['date']}" />

       

      </rich:treeNode>

       

      <rich:treeNode type="time" nodeSelectListener="#{library.processSelection}">

       

      <h:selectManyCheckbox value="#{library.menus}" >

       

      <f:selectItem itemValue="#{vardata.attributes['key']}"/>

       

      <a4j:support event="onclick" action="#{library.takeMenuAccess}"> // Here is

       

      <f:param name="m" value="#{vardata.attributes['key']}"/>

       

      </a4j:support>

       

      </h:selectManyCheckbox>

       

       

       

      <h:outputText value="#{vardata.attributes['time']}" />

       

      </rich:treeNode>

       

      <a4j:support event="oncollapse" action="#{library.mycollapse}"></a4j:support>

       

       

       

      </rich:tree>

      After I putting into the same into my project throwing java.lang.UnsupportedOperationException java.util.AbstractList.add(Unknown Source)        java.util.AbstractList.add(Unknown Source)
         and also tried in richfaces-demo-3.1.3.GA-tomcat6 as well it’s throwing the same . Please help me.

       

      Please see the image to better understand the problem.

       

      Please do the needful help.Beacause of version,if so suggested to me.