Need Help:How to port HashMap<String-ColmnName, ArayList-ClumnData> to Datatable for multiple colmns

[Pupun Moh]

Hi Folks,

I have a requirement in which I have to create a JSF Datatable which will fetch data from a HashMap<String, ArrayList> where the Key corresponds to the column name and the value will be an ArrayList of data for the column.

As of now I have two columns EmpName and EmpNo.

Here is the POJO/Bean Class:

public class Employee{
private String EmpNo;
private String EmpName;

public String getEmpNo() {
		return empNo;
	}
	public void setEmpNo(String empNo) {
		this.empNo = empNo;
	}
	public String getEmpName() {
		return empName;
	}
	public void setEmpName(String empName) {
		this.empName = empName;
	}


}

Here is the backing bean:

  

public class BackingBean{

        private Map<String, ArrayList<String>> empMap=null;
	private List empNoList=null; 
	private List empNameList=null;
	
	empNoList=new ArrayList();
	empNoList.add("1");
	empNoList.add("2");
	
	empNameList=new ArrayList();
	empNameList.add("ABC");
	empNameList.add("EFG");

       empMap=new HashMap();
       empMap.put("Emp No",empNoList);
       empMap.put("Emp Name", empNameList);

}

Now how do I go ahead and construct the dataTable so that it picks up the Key as column name and Arralist as the data in the column.

Please provide your suggestions and code snapshots.

Help is appreciated.

Regards,
Pupun