Trait UnsizedCacheKey 

pub trait UnsizedCacheKey {
    type ValueType: 'static + ?Sized;

    // Required methods
    fn key(&self) -> Cow<'_, str>;
    fn type_name() -> &'static str;

    // Provided methods
    fn stable_type_id() -> &'static str { ... }
    fn schema() -> CacheKeySchema { ... }
    fn write_key(&self, builder: &mut KeyBuilder) { ... }
}

Like CacheKey but for unsized value types (e.g. dyn Trait).

The cache wraps values in an extra Arc layer internally; callers pass and receive Arc<T> where T: ?Sized.

Unsized cache entries are always in-memory only (no serialization codec). For serializable entries, use a sized CacheKey instead.

Required Associated Types

type ValueType: 'static + ?Sized

Required Methods

fn key(&self) -> Cow<'_, str>

fn type_name() -> &'static str

Short, stable string identifying this value type. See CacheKey::type_name for requirements.

Provided Methods

fn stable_type_id() -> &'static str

Stable identity included in the physical key.

fn schema() -> CacheKeySchema

Versioned schema for the logical key fields.

fn write_key(&self, builder: &mut KeyBuilder)

Stream the logical key fields into the canonical key builder.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors