Error RichTable PPR after accessing getSortCriteria

Hello!
I have a page with panelTabbed and a table inside showDetailItem.
In fact I want to check if the table is sorted according to a field and toggle button.
When the user has set some field (asc or desc) and switch between tabs sort remains (despite support bean is recreated). But by pressing the sort browser refresh button disappears.
This is why I'm doing a logic in the setter of table:
public void setTDoc(RichTable tDoc) {
    this.tDoc = tDoc;
    List<SortCriterion> sortCrit = tDoc.getSortCriteria();
    if (sortCrit == null || sortCrit.size() < 1) {
     //there is no sorting
     dto.setSomeBtnEnabled(true);
    } else {
      SortCriterion sortField = sortCrit.get(0);
      if ("docNumber".equals(sortField.getProperty()))
        dto.setSomeBtnEnabled(true);
      else
        dto.setSomeBtnEnabled(false);
    }
}
After that, I get
ADF_FACES-60096:Server Exception during PPR, #1
javax.el.PropertyNotFoundException: Target Unreachable, identifier 'row' resolved to null
Only to the first loading of the page and go to the tab with this table. After switching between the tabs, error disappears and the table appears.
Debugging normally - goes as planned. I guess this strange error for the call to getSortCriteria() for the first time.
Very strange behavior. You have any ideas?

Looks like your page code?

Make this code in what appears to be the Set accessor for the binding to an instance of the component seems a bit odd as well - I would probably link the property disabled button to a bean method that returns true/false and do not do this type of logic in the setter.

John

Tags: Java

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