Struct QueryIterProject 

pub struct QueryIterProject { /* private fields */ }

Project iterator - selects subset of variables

Implementations

impl QueryIterProject

pub fn new( upstream: Box<dyn BindingIterator>, vars: Vec<Var>, ) -> QueryIterProject

Create project iterator

Trait Implementations

impl BindingIterator for QueryIterProject

fn next_binding(&mut self) -> Result<Option<Binding>, IterError>

Get next binding

fn vars(&self) -> Vec<Var>

Get variables produced by this iterator

fn cancel(&mut self)

Cancel iteration

fn has_next(&self) -> bool

Check if there are more results (optional hint)

fn reset(&mut self) -> bool

Reset iterator to beginning (if supported)

impl Debug for QueryIterProject

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.