Trait ParameterBackend 

pub trait ParameterBackend: NeuralBackend {
    type Parameter: 'static;
    type MaterializedWeight;
    type MaterializationContext: ?Sized;
    type Materialization;
    type ParameterError: Error + Send + Sync + 'static;

    // Required methods
    fn preflight_recipe(
        recipe: &DerivedWeightRecipe,
        source: &dyn CheckpointSource,
    ) -> Result<(), Self::ParameterError>;
    fn materialize(
        lease: CheckpointLease,
        context: &Self::MaterializationContext,
    ) -> Result<Self::Materialization, Self::ParameterError>;
    fn materialize_recipe(
        recipe: &DerivedWeightRecipe,
        source: &dyn CheckpointSource,
        context: &Self::MaterializationContext,
    ) -> Result<Self::Materialization, Self::ParameterError>;
    fn materialized_weight(
        materialization: &Self::Materialization,
    ) -> &Self::MaterializedWeight;
    fn finish_materialization(
        materialization: Self::Materialization,
    ) -> Result<Self::MaterializedWeight, Self::ParameterError>;
    fn share_materialized_weight(
        weight: &Self::MaterializedWeight,
    ) -> Result<Self::MaterializedWeight, Self::ParameterError>;
    fn validate_bind(
        parameter: &Self::Parameter,
        weight: &Self::MaterializedWeight,
    ) -> Result<(), Self::ParameterError>;
    fn bind(parameter: &mut Self::Parameter, weight: Self::MaterializedWeight);
}

Materializes and binds checkpoint data to backend-native parameter slots.

Required Associated Types

type Parameter: 'static

One backend-native parameter slot.

type MaterializedWeight

Materialized backend-native checkpoint weight.

type MaterializationContext: ?Sized

Backend context used only while realizing checkpoint parameters.

type Materialization

In-flight guard retaining encoded sources through exact realization completion.

type ParameterError: Error + Send + Sync + 'static

Backend-specific loading failure.

Required Methods

fn preflight_recipe( recipe: &DerivedWeightRecipe, source: &dyn CheckpointSource, ) -> Result<(), Self::ParameterError>

Validates that one neutral recipe can be represented by this backend.

This is a metadata-only selection gate. Implementations must not acquire payload leases, allocate native tensors, or submit backend work.

fn materialize( lease: CheckpointLease, context: &Self::MaterializationContext, ) -> Result<Self::Materialization, Self::ParameterError>

Lowers one format-preserving encoded lease into a native weight.

fn materialize_recipe( recipe: &DerivedWeightRecipe, source: &dyn CheckpointSource, context: &Self::MaterializationContext, ) -> Result<Self::Materialization, Self::ParameterError>

Lowers a validated neutral recipe directly into a native weight.

fn materialized_weight( materialization: &Self::Materialization, ) -> &Self::MaterializedWeight

Borrows the native weight retained by an in-flight materialization.

fn finish_materialization( materialization: Self::Materialization, ) -> Result<Self::MaterializedWeight, Self::ParameterError>

Waits for this exact realization and releases its encoded source lease.

fn share_materialized_weight( weight: &Self::MaterializedWeight, ) -> Result<Self::MaterializedWeight, Self::ParameterError>

Creates another native handle to identical materialized storage without rereading or rematerializing checkpoint data.

fn validate_bind( parameter: &Self::Parameter, weight: &Self::MaterializedWeight, ) -> Result<(), Self::ParameterError>

Validates destination shape/storage compatibility without publication.

fn bind(parameter: &mut Self::Parameter, weight: Self::MaterializedWeight)

Binds one materialized weight to its destination parameter.

This operation is infallible so orchestration can validate an entire atomic unit before publishing any destination.

Dyn Compatibility

This trait is not dyn compatible.

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

Implementors