Struct qualia::CachedMapping

pub struct CachedMapping<F, O> { /* private fields */ }

A set of results of querying a given query and mapping the results, as returned by [Store::cached_query()].

Objects are fetched ahead of time. To check if the cache is still valid, use CachedMapping::valid().

Implementations

impl<F, O> CachedMapping<F, O>where F: FnMut(Object, &Store) -> Result<O>,

pub fn refresh_if_needed(&mut self, store: &Store) -> Result<()>

pub fn valid(&self, store: &Store) -> Result<bool>

pub fn iter(&self) -> impl Iterator<Item = &O>

pub fn len(&self) -> usize

pub fn exists(&self) -> bool