Bug 174701 [Viewers] ViewerRow should be reused instead of connected to the Item
Currently we create a ViewerRow ver every Item we create this can degrade performance, we should cache the row and reuse it
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/AbstractTreeViewer.java
}
			}
		}
		for (int i = 0; i < min; ++i) {
			Item item = items[i];
			Object newElement = elementChildren[i];
			if (item.getData() == null) {
				
				associate(newElement, item);
				updatePlus(item, newElement);
				updateItem(item, newElement);
			} else {
				
				updatePlus(item, newElement);
				if (updateLabels) {
					updateItem(item, newElement);
				}
			}
		}
		
		
		
		
		
		
		for (int i = 0; i < min; ++i) {
			Item item = items[i];
			Object newElement = elementChildren[i];
			setExpanded(item, expanded.containsKey(newElement));
		}