Trait HostExternalStorage 

pub trait HostExternalStorage<Profile, Schema>:
    Send
    + Sync
    + 'static
where
    Profile: HostProfile,
    Schema: HostExternalSchema,
{
    type Payload: 'static;

    // Required methods
    fn store(
        stores: &Profile::ExternalStores,
    ) -> &HostExternalStore<Self::Payload>;
    fn source_equal(
        context: &HostExternalEquality<'_>,
        left: &Self::Payload,
        right: &Self::Payload,
    ) -> bool;
    fn source_hash(
        context: &HostExternalHashing<'_>,
        value: &Self::Payload,
    ) -> u64;
    fn inspect(
        context: &HostExternalInspection<'_>,
        value: &Self::Payload,
    ) -> EcoString;
}

Provider-owned storage and Gleam source semantics for one external schema.

Payloads are immutable after creation. Values that compare equal through HostExternalStorage::source_equal must return the same HostExternalStorage::source_hash. Hash collisions are allowed and are resolved through source equality. Source hashes are runtime indexes, not stable serialized values.

Required Associated Types

type Payload: 'static

Required Methods

fn store(stores: &Profile::ExternalStores) -> &HostExternalStore<Self::Payload>

Projects the typed payload store from the final profile’s external stores.

fn source_equal( context: &HostExternalEquality<'_>, left: &Self::Payload, right: &Self::Payload, ) -> bool

Compares two payloads using Gleam source equality.

fn source_hash(context: &HostExternalHashing<'_>, value: &Self::Payload) -> u64

Hashes a payload consistently with HostExternalStorage::source_equal.

fn inspect( context: &HostExternalInspection<'_>, value: &Self::Payload, ) -> EcoString

Produces the payload’s canonical source-oriented inspection.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors