Java Development Tools

Hi All,

I am using jdeveloper version 11.1.1.6.0.

I have popuplated tree table using Pojo Class. It does contains the Parent->Child in tree table. We need the value of the row of Child which is selected.

Please find the below code for the same:

JSPX Page :

        <af:treeTable rowBandingInterval="0" id="tt1"
                      value="#{pageFlowScope.ProgrammaticTreeTabBean.charatcerVal}" var="node"
                      rowSelection="single" initiallyExpanded="true"
                     
                      binding="#{pageFlowScope.ProgrammaticTreeTabBean.tblModelBind}">
                    <f:facet name="nodeStamp">
                        <af:column headerText="Node Stamp" id="c1" width="250">
                            <af:outputText value="#{node.name}" id="ot1" inlineStyle="font-weight:bold;"/>
                        </af:column>
                    </f:facet>
        </af:treeTable>

Java Code :

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;


import javax.faces.event.ActionEvent;


import javax.faces.event.PhaseEvent;


import oracle.adf.model.bean.DCDataRow;
import oracle.adf.view.rich.component.rich.data.RichTreeTable;


import oracle.adf.view.rich.context.AdfFacesContext;


import oracle.jbo.Row;
import oracle.jbo.uicli.binding.JUCtrlHierBinding;


import oracle.jbo.uicli.binding.JUCtrlHierNodeBinding;


import org.apache.myfaces.trinidad.event.SelectionEvent;
import org.apache.myfaces.trinidad.model.ChildPropertyTreeModel;
import org.apache.myfaces.trinidad.model.CollectionModel;
import org.apache.myfaces.trinidad.model.RowKeySet;


public class ProgrammaticTreeTabBean {
    List<Seasons> seasonList = new ArrayList<Seasons>();


    ChildPropertyTreeModel charatcerVal;
    private RichTreeTable tblModelBind;


    public ProgrammaticTreeTabBean() {
        super();
        // Creating tree for Seasons and Characters details
        // Adding Master Values (seasons)
        Seasons season1 = new Seasons("Game of Thrones");
       // Adding Detail Values (Child Node-Characters)
        Seasons character = new Seasons("Tywin Lannister");
        season1.addCharaters(character);
        character = new Seasons("Tyrion Lannister");
        season1.addCharaters(character);
        character = new Seasons("Jaime Lannister");
        season1.addCharaters(character);
        character = new Seasons("Cersie Lannister");
        season1.addCharaters(character);
        character = new Seasons("Ned Stark");
        season1.addCharaters(character);


        // Adding Master Values (seasons)
        Seasons season2 = new Seasons("Arrow");
        // Adding Detail Values (Child Node-Characters)
        character = new Seasons("Oliver Queen");
        season2.addCharaters(character);
        character = new Seasons("Moira Queen");
        season2.addCharaters(character);
        character = new Seasons("Laurel Lance");
        season2.addCharaters(character);
        character = new Seasons("Sara Lance");
        season2.addCharaters(character);


        // Adding Master Values (seasons)
        Seasons season3 = new Seasons("Vikings");
      // Adding Detail Values (Child Node-Characters)
        character = new Seasons("Ragnar Lothrak");
        season3.addCharaters(character);


        // Adding all list to topList
        seasonList.add(season1);
        seasonList.add(season2);
        seasonList.add(season3);
        // Filtering Child Data, ChildPropertyTreeModel creates a TreeModel from a List of beans, see
        // https://myfaces.apache.org/trinidad/trinidad-api/apidocs/org/apache/myfaces/trinidad/model/ChildPropertyTreeModel.html
        charatcerVal = new ChildPropertyTreeModel(seasonList, "characters");
    }


    public ChildPropertyTreeModel getCharatcerVal() {
        return charatcerVal;
    }


    public void rowSelectionListener(SelectionEvent selectionEvent) {

        
        //get selected nodes
           RowKeySet rowKeySet = selectionEvent.getAddedSet();
           Iterator<Object> rksIterator = (Iterator<Object>)rowKeySet.iterator();
           //for single select configurations,this only is called once
           while (rksIterator.hasNext()) {
               List<Object> key = (List<Object>)rksIterator.next();
               JUCtrlHierBinding treeBinding = null;
               CollectionModel collectionModel = (CollectionModel)tblModelBind.getValue();
               treeBinding = (JUCtrlHierBinding)collectionModel.getWrappedData();
               JUCtrlHierNodeBinding nodeBinding = null;
               nodeBinding = treeBinding.findNodeByKeyPath(key);
               Row rw = nodeBinding.getRow();
               //print first row attribute. Note that in a tree you have to
               //determine the node type if you want to select node attributes
               //by name and not index
               String rowType = rw.getStructureDef().getDefName();
       
            }
    }


    public void setTblModelBind(RichTreeTable tblModelBind) {
        this.tblModelBind = tblModelBind;
    }


    public RichTreeTable getTblModelBind() {
        return tblModelBind;
    }


    
}

At the line treeBinding = (JUCtrlHierBinding)collectionModel.getWrappedData();  in method rowSelectionListener it says Caused by: java.lang.ClassCastException: java.util.ArrayList cannot be cast to oracle.jbo.uicli.binding.JUCtrlHierBinding

Please suggest any way to get the selected child value.