JSF [Trinidad] treetable, How to define Initially Selected Rows?

[Majid Hussain]

Hi,

My project is build in JSF, Hibernate and Faclets. i m using trinidad
treetable tag to build a tree with multiselection nodes. Now i m facing a
problem to initially selection of the nodes when page is loaded at the first
time. i have tried alot to accomplish this task, but still unable to retain
it. There is an attribute of "selectedRowKeys" in TreeTable which takes the
object of "RowKeySet", but when i am building the tree in my bean, i don't
know the RowKeys generated, so how do i get my desired RowKeys to be
selected in the tree?

i am trying to provide the code below

myTree.xhtml

<tr:treeTable id="testTreeTable"
                                  value="#{RoleManageBean.tree}"
                                  var="node"
                                  rowSelection="multiple"
                                  initiallyExpanded="true"
                                  rowBandingInterval="1"
                                  horizontalGridVisible="true"
                                  verticalGridVisible="true"
                                  selectedRowKeys="#{
RoleManageBean.selectedRowKeys}">
                        <f:facet name="actions">
                            <tr:commandButton id="treeTableSelectButton"
text="Submit Sel." action="#{RoleManageBean.treeTableSelect}" />
                        </f:facet>
                        <f:facet name="nodeStamp">
                            <tr:column headerText="Name">
                                <tr:outputText value="#{node.name}"/>
                            </tr:column>
                        </f:facet>
                        <f:facet name="pathStamp">
                            <tr:outputText value="#{node.name}"/>
                        </f:facet>
                    </tr:treeTable>


MyBean.java

public class RoleManageBean implements Serializable {

    private TreeModel tree;
    private RowKeySet selectedRowKeys = null;

public TreeModel getTree() throws Exception {
        Application[] applications = dbops.getAllApplications();
        List<Node1> empty1 = Collections.emptyList();
        List<Node1> root1 = new ArrayList<Node1>();
        List<Node1> apps = new ArrayList<Node1>();
        for (Application application : applications) {
            Set<ApplicationPage> appPages =
application.getApplicationPage();
            List<Node1> pages = new ArrayList<Node1>();
            for (ApplicationPage applicationPage : appPages) {
                pages.add(new Node1(applicationPage.getPageName(),
String.valueOf(applicationPage.getPageID()), empty1));
            }
            apps.add(new Node1(application.getApplicationName(),
String.valueOf(application.getHomePage().getPageID()), pages));

        }
        root1.add(new Node1("Applications", "0", apps));
        tree = new ChildPropertyTreeModel(root1, "children");

        return tree;
    }

public RowKeySet getSelectedRowKeys() {
        selectedRowKeys = new RowKeySetImpl();
        selectedRowKeys.add(String.valueOf("1,0"));
        System.out.println("called");
        return selectedRowKeys;
    }

    public void setSelectedRowKeys(RowKeySet selectedRowKeys) {
        this.selectedRowKeys = selectedRowKeys;
    }


Any guideline will be appriciated. Thanks in Advance

Majid.