Struct datafusion_execution::cache::cache_unit::DefaultListFilesCache

pub struct DefaultListFilesCache { /* private fields */ }

Collected files metadata for listing files. Cache will not invalided until user call remove or clear.

Trait Implementations

impl CacheAccessor<Path, Arc<Vec<ObjectMeta>>> for DefaultListFilesCache

type Extra = ObjectMeta

fn get(&self, k: &Path) -> Option<Arc<Vec<ObjectMeta>>>

Get value from cache.

fn get_with_extra( &self, _k: &Path, _e: &Self::Extra ) -> Option<Arc<Vec<ObjectMeta>>>

Get value from cache.

fn put( &self, key: &Path, value: Arc<Vec<ObjectMeta>> ) -> Option<Arc<Vec<ObjectMeta>>>

Put value into cache. Returns the old value associated with the key if there was one.

fn put_with_extra( &self, _key: &Path, _value: Arc<Vec<ObjectMeta>>, _e: &Self::Extra ) -> Option<Arc<Vec<ObjectMeta>>>

Put value into cache. Returns the old value associated with the key if there was one.

fn remove(&mut self, k: &Path) -> Option<Arc<Vec<ObjectMeta>>>

Remove an entry from the cache, returning value if they existed in the map.

fn contains_key(&self, k: &Path) -> bool

Check if the cache contains a specific key.

fn len(&self) -> usize

Fetch the total number of cache entries.

fn clear(&self)

Remove all entries from the cache.

fn name(&self) -> String

Return the cache name.

fn is_empty(&self) -> bool

Check if the Cache collection is empty or not.

impl Default for DefaultListFilesCache

fn default() -> DefaultListFilesCache

Returns the “default value” for a type.