Enum PurgeTarget 

pub enum PurgeTarget<'a> {
    Active(&'a CompactCacheKey),
    Exact(&'a CacheEntryKey),
}

The entry a Storage::purge call should remove.

Variants

Active(&'a CompactCacheKey)

Remove storage’s current entry for this logical cache key.

This targets one entry. Storage that retains multiple generations for a logical key does not need to remove inactive generations. Storage must not remove an entry with a different logical key. When storage retains multiple generations, it may select which identity to remove.

Exact(&'a CacheEntryKey)

Remove this exact cache entry.

Storage must match the complete identity, including any CacheEntryId.

Implementations

impl<'a> PurgeTarget<'a>

pub fn key(self) -> &'a CompactCacheKey

Return the target’s logical cache key.

pub fn removed_entry(self, id: Option<CacheEntryId>) -> CacheEntryKeyRef<'a>

Return a borrowed identity for the removed entry.

id supplies identity discovered while resolving a PurgeTarget::Active target. It is ignored for a PurgeTarget::Exact target, which already contains the complete identity; if supplied, it must match that identity.

Trait Implementations

impl<'a> Clone for PurgeTarget<'a>

fn clone(&self) -> PurgeTarget<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for PurgeTarget<'a>

impl<'a> Debug for PurgeTarget<'a>

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

Formats the value using the given formatter.

impl Display for PurgeTarget<'_>

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

Formats the value using the given formatter.

impl<'a> Eq for PurgeTarget<'a>

impl<'a> PartialEq for PurgeTarget<'a>

fn eq(&self, other: &PurgeTarget<'a>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<'a> StructuralPartialEq for PurgeTarget<'a>