/// <param name="e">
/// is the filter expression. </param>
/// <returns> e </returns>
public virtual object visit(FilterExpr e)
{
PrimaryExpr pe = (PrimaryExpr)e.primary().accept(this);
e.set_primary(pe);
printCollExprs(e.GetEnumerator());
return(e);
}
/// <summary>
/// Validate a filter expression.
/// </summary>
/// <param name="e">
/// is the expression. </param>
/// <returns> null. </returns>
public virtual object visit(FilterExpr e)
{
e.primary().accept(this);
visitCollExprs(e.GetEnumerator());
return(null);
}