DataProvider unable to update records in table

Question

Hi guys,
as above, I have got this piece of code below.
What happen is I am unable to update the records in one of the dataprovider - "objectidsDataProvider" (used to keep track of no. of items in itemsDataProvider).
If I take away the objectidsDataProvider coding; I am able to update the itemsDataProvider.
Please kindly advice and let me know if any additional info needed. Thanks in advance.
CODE:
int newItemId = 0;
if (itemsDataProvider.canAppendRow()) {
  try {
    RowKey rowKey = itemsDataProvider.appendRow();
    itemsDataProvider.setCursorRow(rowKey);
    // put the new data in the data provider
    itemsDataProvider.setValue("ITEMS.ID", new Integer(0));
    itemsDataProvider.setValue("ITEMS.USERNAME", uname);
    itemsDataProvider.setValue("ITEMS.TITLE", title);
    newItemId = ((Integer)objectidsDataProvider.getValue("MAXITEMID")).intValue();
    objectidsDataProvider.setValue("OBJECTIDS.ID", new Integer(newItemId));
     objectidsDataProvider.commitChanges();
    // Navigate through rows with data provider
    if (itemsDataProvider.getRowCount() > 0) {
      itemsDataProvider.cursorFirst();
      do {
        if (itemsDataProvider.getValue("ITEMS.ID").equals(new Integer(0))) {
          itemsDataProvider.setValue("ITEMS.ID", new Integer(newItemId));   
      } while (itemsDataProvider.cursorNext());
    itemsDataProvider.commitChanges();
  } catch (Exception e) {
    log("Cannot add new DVD", e);
    error("Cannot add new DVD: " + e.getMessage());
  return "success";
} else {
  return "fail";
SELECT * FROM DVD.OBJECTIDS
TABLE_NAME        ID
items            28
SELECT * FROM DVD.ITEMS
ID    USERNAME    TITLE
1        John        300
...

Answer 1

RowKey rowKey = itemsDataProvider.appendRow();
itemsDataProvider.setCursorRow(rowKey);
// put the new data in the data provider
itemsDataProvider.setValue("ITEMS.ID", new Integer(0));
itemsDataProvider.setValue("ITEMS.USERNAME", uname);
itemsDataProvider.setValue("ITEMS.TITLE", title);try to use this :
RowKey rowKey = itemsDataProvider.appendRow();
    itemsDataProvider.setCursorRow(rowKey);
    // put the new data in the data provider
    itemsDataProvider.setValue("ITEMS.ID", rowKey ,new Integer(0));
    itemsDataProvider.setValue("ITEMS.USERNAME", rowKey ,uname);
    itemsDataProvider.setValue("ITEMS.TITLE",rowKey , title);and dont forget to end ur code with ,,, commiteChanges();
Hope this will help
Good luck
Mohammed