Display the combination of 2 fields in the Listbox

Question

Hi,
I have used the list box for displaying customer name from the database table(MySQL). I can assign one field as value field and one is display field in the listbox.
But I want to display the combination of both fields (Firstname and Lastname) in the listbox.
my code in Bean:
tbldoctorsRowSet2.setDataSourceName("java:comp/env/jdbc/CustDataSource");
        tblcustomersRowSet2.setCommand("SELECT CUST_ID, CONCAT(LAST_NAME, FIRST_NAME) AS FULLNAME  FROM  tblcustomers");
        tblcustomersRowSet2.setTableName("tblcustomers");
        tblcustomersDataProvider2.setCachedRowSet((javax.sql.rowset.CachedRowSet)getValue("#{AdminSettings.tblcustomersRowSet2}"));JSF Jsp file
<ui:listbox binding="#{AdminSettings.listbox}" converter="#{AdminSettings.listbox1Converter}" id="listbox"
                            items="#{AdminSettings.tblcustomersDataProvider2.options['tblcustomers.CUST_ID,FULLNAME']}"I got NullPointerException at the runtime.
Please tell me how do i display the combination of the fields in the list box.
thank you

Answer 1

Hi,
myself Tushar Parekh From Mumbai. I am also new to this tech but had faced same problems few days back so I am string to give u hint which will can u
tbldoctorsRowSet2.setDataSourceName("java:comp/env/jdbc/CustDataSource");
tblcustomersRowSet2.setCommand("SELECT CUST_ID,ONCAT(LAST_NAME, FIRST_NAME) AS FULLNAME FROM tblcustomers");
tblcustomersRowSet2.setTableName("tblcustomers"); tblcustomersDataProvider2.setCachedRowSet((javax.sql.rowset.CachedRowSet)getValue("#{AdminSettings.tblcustomersRowSet2}"));
***** WRITE THIS METHID IN Your Bean where u have written above code:
Start--------------------
public SelectItem[] getlistHashMap() {
HasMap ItemHashMap = new HashTable();
ItemsHashMap.put(new Integer(tblcustomers.CUST_ID,tblcustomers.FULLNALE));
}catch(Exception E) {
System.out.println("Exceptio occur while tring to fill combo is " + E);
this.getItemsHashMap().put(new Integer(1),"Exception In Fetching");
System.out.println("Exception in LAMaintainBean At Line 191");
End---------------------
and then In JSF Jsp file
<h:selectOneMenu id="listbox" value="#{AdminSettings.listbox}">
<f:selectItems value="#{AdminSettings..listHashMap}"/>
</h:selectOneMenu>
try this....
<ui:listbox binding="#{AdminSettings.listbox}" converter="#{AdminSettings.listbox1Converter}"
id="listbox" items="#{AdminSettings.tblcustomersDataProvider2.options['tblcustomers.CUST_ID,FULLNAME']}"