Add child nodes to tree

[tvbapat]

How do i add child nodes to tree ?
this.htmlTree = new HtmlTree();
htmlTree.setIconCollapsed("/images/btn_node_collapse.gif");
htmlTree.setIconExpanded("/images/btn_node_expand.gif");
htmlTree.setIconLeaf("/images/btn_node_circle.gif");
htmlTree.setSwitchType("CLIENT");
htmlTree.setRendered(true);
htmlTree.setShowConnectingLines(true);
htmlTree.setValue(parent.getOrgs());

parent.getOrgs() returns an object of Map with all child nodes.
Can anyone point out where i am getting wrong ?

public class ParentOrgDO implements TreeNode
{


// COH_ID
private int cohId;

private Map<Object,TreeNode> orgs = null;

// CD_ID
private int cdId;

// COH_TYPE
private int cohType;

// COH_PARENT_ORG_ID
private String cohParentOrgId;

// COH_PARENT_ORG_NAME
private String cohParentOrgName;

// COH_ORG_ID
private String cohOrgId;

// COH_ORG_NAME
private String cohOrgName;

// datagate Id
private int cohDatagateId;


/**
* @return the orgs
*/
public Map<Object, TreeNode> getOrgs()
{
if (this.orgs == null)
{
initData();
}
return this.orgs;
}

/**
* @param orgs the orgs to set
*/
public void setOrgs(Map<Object, TreeNode> orgs) {
this.orgs = orgs;
}

public void initData()
{
this.orgs = new HashMap<Object, TreeNode>();
ParentOrgDO parentOrgDO = new ParentOrgDO();
parentOrgDO.setCohId(1);
parentOrgDO.setCohType(1);
parentOrgDO.setCohOrgId("101");
parentOrgDO.setCohOrgName("Microsoft");
parentOrgDO.setCohParentOrgId("");
parentOrgDO.setCohParentOrgName("");
parentOrgDO.setCohDatagateId(1010101010);
this.orgs.put(parentOrgDO.getCohOrgName(),parentOrgDO);


ParentOrgDO parentOrgDO1 = new ParentOrgDO();
parentOrgDO1.setCohId(2);
parentOrgDO1.setCohType(1);
parentOrgDO1.setCohOrgId("102");
parentOrgDO1.setCohOrgName("Microsoft2");
parentOrgDO1.setCohParentOrgId("101");
parentOrgDO1.setCohParentOrgName("Microsoft");
parentOrgDO1.setCohDatagateId(1010101010);
this.orgs.put(parentOrgDO1.getCohOrgName(), parentOrgDO1);


ParentOrgDO parentOrgDO2 = new ParentOrgDO();
parentOrgDO2.setCohId(3);
parentOrgDO2.setCohType(1);
parentOrgDO2.setCohOrgId("103");
parentOrgDO2.setCohOrgName("Microsoft3");
parentOrgDO2.setCohParentOrgId("101");
parentOrgDO2.setCohParentOrgName("Microsoft");
parentOrgDO2.setCohDatagateId(1010101010);
this.orgs.put(parentOrgDO2.getCohOrgName(), parentOrgDO2);


ParentOrgDO parentOrgDO11 = new ParentOrgDO();
parentOrgDO11.setCohId(4);
parentOrgDO11.setCohType(1);
parentOrgDO11.setCohOrgId("104");
parentOrgDO11.setCohOrgName("Microsoft4");
parentOrgDO11.setCohParentOrgId("101");
parentOrgDO11.setCohParentOrgName("Microsoft");
parentOrgDO11.setCohDatagateId(1010101010);
this.orgs.put(parentOrgDO11.getCohOrgName(), parentOrgDO11);


ParentOrgDO parentOrgDO21 = new ParentOrgDO();
parentOrgDO21.setCohId(5);
parentOrgDO21.setCohType(1);
parentOrgDO21.setCohOrgId("105");
parentOrgDO21.setCohOrgName("Microsoft5");
parentOrgDO21.setCohParentOrgId("101");
parentOrgDO21.setCohParentOrgName("Microsoft");
parentOrgDO21.setCohDatagateId(1010101010);
this.orgs.put(parentOrgDO21.getCohOrgName(), parentOrgDO21);

}


/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#addChild(java.lang.Object, org.richfaces.component.TreeNode)
*/
public void addChild(Object arg0, TreeNode arg1)
{
orgs.put(arg0, arg1);
arg1.setParent(this);
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#getChild(java.lang.Object)
*/
public TreeNode getChild(Object arg0)
{
return (TreeNode)orgs.get(arg0);
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#getChildren()
*/
public Iterator getChildren()
{
return orgs.entrySet().iterator();
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#getData()
*/
public Object getData()
{
return this;
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#getParent()
*/
public TreeNode getParent()
{
return null;
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#isLeaf()
*/
public boolean isLeaf()
{
return orgs.isEmpty();
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#removeChild(java.lang.Object)
*/
public void removeChild(Object arg0)
{
orgs.remove(arg0);
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#setData(java.lang.Object)
*/
public void setData(Object arg0)
{
}

/* (non-Javadoc)
* @see org.richfaces.component.TreeNode#setParent(org.richfaces.component.TreeNode)
*/
public void setParent(TreeNode arg0)
{
}

public String getType()
{
return "metadata";
}

/**
* @return the cdId
*/
public int getCdId()
{
return cdId;
}

/**
* @param cdId the cdId to set
*/
public void setCdId(int cdId)
{
this.cdId = cdId;
}

/**
* @return the cohId
*/
public int getCohId()
{
return cohId;
}

/**
* @param cohId the cohId to set
*/
public void setCohId(int cohId)
{
this.cohId = cohId;
}

/**
* @return the cohOrgId
*/
public String getCohOrgId()
{
return cohOrgId;
}

/**
* @param cohOrgId the cohOrgId to set
*/
public void setCohOrgId(String cohOrgId)
{
this.cohOrgId = cohOrgId;
}

/**
* @return the cohOrgName
*/
public String getCohOrgName()
{
return cohOrgName;
}

/**
* @param cohOrgName the cohOrgName to set
*/
public void setCohOrgName(String cohOrgName)
{
this.cohOrgName = cohOrgName;
}

/**
* @return the cohParentOrgId
*/
public String getCohParentOrgId()
{
return cohParentOrgId;
}

/**
* @param cohParentOrgId the cohParentOrgId to set
*/
public void setCohParentOrgId(String cohParentOrgId)
{
this.cohParentOrgId = cohParentOrgId;
}

/**
* @return the cohParentOrgName
*/
public String getCohParentOrgName()
{
return cohParentOrgName;
}

/**
* @param cohParentOrgName the cohParentOrgName to set
*/
public void setCohParentOrgName(String cohParentOrgName)
{
this.cohParentOrgName = cohParentOrgName;
}

/**
* @return the cohType
*/
public int getCohType()
{
return cohType;
}

/**
* @param cohType the cohType to set
*/
public void setCohType(int cohType)
{
this.cohType = cohType;
}

/**
* @return the datagateId
*/
public int getCohDatagateId()
{
return cohDatagateId;
}

/**
* @param pcohDatagateId the datagateId to set
*/
public void setCohDatagateId(int pcohDatagateId)
{
this.cohDatagateId = pcohDatagateId;
}

/**
* @return the id
*/
public Integer getId() {
return id;
}

}