public bool isReferenced(Column column)
{
if (column != null)
{
if (_selectItem != null)
{
if (_selectItem.isReferenced(column))
{
return(true);
}
}
if (_operand != null && _operand is SelectItem)
{
if (((SelectItem)_operand).isReferenced(column))
{
return(true);
}
}
if (_childItems != null)
{
foreach (FilterItem item in _childItems)
{
if (item.isReferenced(column))
{
return(true);
}
}
}
}
return(false);
}
/**
* Investigates whether or not this SelectItem references a particular
* column. This will search for direct references and indirect references
* via subqueries.
*
* @param column
* @return a boolean that is true if the specified column is referenced by
* this SelectItem and false otherwise.
*/
public bool isReferenced(Column column)
{
if (column != null)
{
if (column.Equals(_column))
{
return(true);
}
if (_subQuerySelectItem != null)
{
return(_subQuerySelectItem.isReferenced(column));
}
}
return(false);
}
