Hello,
your getUsers() method looks suspicious - it seems to create list of strings
(not Users). Particularly, you add Strings retrieved from the resultset into
the list.
retval.add(rs.getString(1));
Therefore the ListView component gets passed the list of Strings retrieved
from the first column of table.
Robert Novotny
eddmosphere wrote:
>
> Hi there! I'm realllyyyy getting confused..
>
> I'm trying to create a table with the resultSet from a mysql database (I
> tried DataView but gave up..too much for me) by using a ListView. The
> problem is that I keep getting an ClassCastException: java.lang.String.
> Wicket tells me this happens in the populateItem() method when I try to
> cast the ListItem to User (of course..). I have a simple User class with
> getters to retrieve: int userid, String name, String phone, etc...I don't
> know why this is happening so..could someone please help?
>
> Thanks in advance,
> Edd
>
>
> [CODE]
>
> ....
>
> /* create connection do mysql db and retrive a ResultSet */
> NewConnection myconn = new NewConnection();
> final ResultSet userTableData = myconn.queryTable("SELECT * FROM
> user");
>
> /* calling method that transforms my ResultSet (usersList) to a
> List */
> List usersList = getUsers(userTableData);
>
> ListView listView = new ListView("pageable", usersList)
> {
> protected void populateItem(ListItem listItem)
> {
> User user = (User)listItem.getModelObject(); //
> CLASSCASTEXCEPTION HEREEE
> listItem.add(new Label("userid",
> Integer.toString(user.getUserId())));
> listItem.add(new Label("name", user.getName()));
> listItem.add(new Label("phone", user.getPhone()));
> listItem.add(new Label("email", user.getEmail()));
> listItem.add(new Label("type", user.getType()));
> }
>
> };
> add(listView);
>
>
> .....
>
> /* method to convert ResultSet to List */
> public List getUsers(ResultSet rs) {
> List retval = new ArrayList();
> try {
> while(rs.next()) {
> retval.add(rs.getString(1));
> }
> } catch (SQLException ex) {
> ex.printStackTrace();
> }
> return retval;
> }
>
>
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