Not able form Tree node with properties files
Hi ,
I am using Tree node example with properties file. but getting the exception in the code
java.lang.ClassCastException: org.richfaces.model.TreeNodeImpl
<<<< Java Code >>>>>
public class SimpleTreeBean {
private TreeNode rootNode = null;
private List selectedNodeChildren = new ArrayList();
private String nodeTitle;
private static final String DATA_PATH = "/WEB-INF/classes/simple-tree-data.properties";
private void addNodes(String path, TreeNode node, Properties properties) {
boolean end = false;
int counter = 1;
while (!end) {
String key = path != null ? path + '.' + counter : String.valueOf(counter);
System.out.println("key "+key);
String value = properties.getProperty(key);
System.out.println("value "+value);
if (value != null) {
TreeNode nodeImpl = new TreeNodeImpl();
nodeImpl.setData(value);
node.addChild(new Integer(counter), nodeImpl);
System.out.println("key, nodeImpl, properties "+key+" "+node.getParent()+" "+properties);
addNodes(key, nodeImpl, properties);
//addNodes(key, node, properties);
counter++;
} else {
end = true;
}
}
}
private void loadTree() {
FacesContext facesContext = FacesContext.getCurrentInstance();
ExternalContext externalContext = facesContext.getExternalContext();
InputStream dataStream = externalContext.getResourceAsStream(DATA_PATH);
System.out.println(" externalContext.getRequestContextPath() "+externalContext.getRequestContextPath());
System.out.println(" externalContext.getRequestPathInfo() "+externalContext.getRequestPathInfo());
try {
System.out.println("inside try method ");
Properties properties = new Properties();
properties.load(dataStream);
rootNode = new TreeNodeImpl();
addNodes(null, rootNode, properties);
} catch (IOException e) {
System.out.println("EXception occured >>>> "+e.toString());
throw new FacesException(e.getMessage(), e);
} finally {
if (dataStream != null) {
try {
dataStream.close();
} catch (IOException e) {
externalContext.log(e.getMessage(), e);
}
}
}
}
public void processSelection(NodeSelectedEvent event) {
HtmlTree tree = (HtmlTree) event.getComponent();
nodeTitle = (String) tree.getRowData();
selectedNodeChildren.clear();
TreeNode currentNode = tree.getModelTreeNode(tree.getRowKey());
if (currentNode.isLeaf()){
selectedNodeChildren.add((String)currentNode.getData());
}else
{
Iterator<Map.Entry<Object, TreeNode>> it = currentNode.getChildren();
while (it!=null &&it.hasNext()) {
Map.Entry<Object, TreeNode> entry = it.next();
selectedNodeChildren.add(entry.getValue().getData().toString());
}
}
}
public TreeNode getTreeNode() {
if (rootNode == null) {
loadTree();
}
return rootNode;
}
public String getNodeTitle() {
return nodeTitle;
}
public void setNodeTitle(String nodeTitle) {
this.nodeTitle = nodeTitle;
}
}
<<<<<<< END >>>>>>
<<<<<< JSF page START >>>>>
<ui:composition xmlns="http://www.w3.org/1999/xhtml"
xmlns:ui="http://java.sun.com/jsf/facelets"
xmlns:h="http://java.sun.com/jsf/html"
xmlns:f="http://java.sun.com/jsf/core"
xmlns:a4j="http://richfaces.org/a4j"
xmlns:rich="http://richfaces.org/rich">
.col, .col2 {
width:50%;
vertical-align:top;
}
<h:form>
<h:panelGrid columns="2" width="100%" columnClasses="col1,col2">
<rich:tree style="width:300px" nodeSelectListener="#{simpleTreeBean.processSelection}"
reRender="selectedNode" ajaxSubmitSelection="true" switchType="client"
value="#{simpleTreeBean.treeNode}" var="item">
</rich:tree>
<h:outputText escape="false" value="Selected Node: #{simpleTreeBean.nodeTitle}" id="selectedNode" />
</h:panelGrid>
</h:form>
</ui:composition>
Appreciate help...
<<<<<< JSF page END >>>>>
