/**
* Creates a clone of the {@link SelectItem} for use within a cloned
* {@link Query}.
*
* @param clonedQuery
* a new {@link Query} object that represents the clone-to-be of
* a query. It is expected that {@link FromItem}s have already
* been cloned in this {@link Query}.
* @return
*/
public SelectItem clone(Query clonedQuery)
{
SelectItem subQuerySelectItem = (_subQuerySelectItem == null ? null : _subQuerySelectItem.clone());
FromItem fromItem;
if (_fromItem == null)
{
fromItem = null;
}
else if (clonedQuery != null && _query != null)
{
int indexOfFromItem = _query.getFromClause().indexOf(_fromItem);
if (indexOfFromItem != -1)
{
fromItem = clonedQuery.getFromClause().getItem(indexOfFromItem);
}
else
{
fromItem = _fromItem.clone();
}
}
else
{
fromItem = _fromItem.clone();
}
SelectItem s = new SelectItem(_column, fromItem, _function, _functionParameters, _expression,
subQuerySelectItem, _alias, _functionApproximationAllowed);
return(s);
} // clone()
// @Override
public FilterItem clone()
{
NList <FilterItem> orItems;
if (_childItems == null)
{
orItems = null;
}
else
{
orItems = _childItems;
}
object operand;
if (_operand is SelectItem)
{
operand = ((SelectItem)_operand).clone();
}
else
{
operand = _operand;
}
SelectItem selectItem;
if (_selectItem == null)
{
selectItem = null;
}
else
{
selectItem = _selectItem.clone();
}
return(new FilterItem(selectItem, _operator, operand, orItems, _expression, _logicalOperator));
}