Bug 126061 [Viewers] Need to document that virtual tables and trees ignore sorters and filters
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
if (w != null) {
				updateItem(w, element);
			}
		}
	}
	/**
	 * Refresh all with virtual elements.
	 * 
	 * @since 3.1
	 */
	private void internalVirtualRefreshAll() {
		
		Object root = getRoot();
		IContentProvider contentProvider = getContentProvider();
		
		
		if(!(contentProvider instanceof ILazyContentProvider) 
				&& (contentProvider instanceof IStructuredContentProvider)) {
			
			if(root != null){
				virtualManager.cachedElements = 
					((IStructuredContentProvider) getContentProvider()).getElements(root);
				getTable().setItemCount(virtualManager.cachedElements.length);
			}
		}
		getTable().clearAll();
	}
	/**
	 * Refresh all of the elements of the table. update the
	 * labels if updatLabels is true;