Struct NodeQueryResult 

pub struct NodeQueryResult {
    pub nodes: Vec<u64>,
}

Materialized query result: packed handles in document order. Mirrors the Bevy-flavored NodeQuery consumers the host types wrap.

Fields

nodes: Vec<u64>

Matched handles, document order.

Implementations

impl NodeQueryResult

pub fn len(&self) -> usize

Number of matches.

pub fn is_empty(&self) -> bool

Whether the result set is empty.

pub fn first(&self) -> Option<u64>

First match in document order (first()).

pub fn nth(&self, index: usize) -> Option<u64>

Match at index (nth(i)).

pub fn single(&self) -> Result<u64, String>

Exactly-one match (Bevy single()): the sole handle, else an error naming the count.

pub fn get_single(&self) -> Option<u64>

Fallible one-or-none form (get_single()): the sole handle, or None for zero or many.

pub fn collect(&self) -> Vec<u64>

All handles as a slice (iter() / collect()).

Trait Implementations

impl Clone for NodeQueryResult

fn clone(&self) -> NodeQueryResult

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NodeQueryResult

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

Formats the value using the given formatter.

impl Default for NodeQueryResult

fn default() -> NodeQueryResult

Returns the “default value” for a type.