Trait OnGovernedMappingChange

pub trait OnGovernedMappingChange<MaxKeyLength, MaxValueLength>
where
    MaxKeyLength: Get<u32>,
    MaxValueLength: Get<u32>,
{
    // Required method
    fn on_governed_mapping_change(
        key: BoundedString<MaxKeyLength>,
        new_value: Option<BoundedVec<u8, MaxValueLength>>,
        old_value: Option<BoundedVec<u8, MaxValueLength>>,
    );
}

Handler trait for runtime components which need to react to changes in the Governed Map.

Required Methods

fn on_governed_mapping_change( key: BoundedString<MaxKeyLength>, new_value: Option<BoundedVec<u8, MaxValueLength>>, old_value: Option<BoundedVec<u8, MaxValueLength>>, )

Processes a change to a single governed mapping.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl<MaxKeyLength, MaxValueLength> OnGovernedMappingChange<MaxKeyLength, MaxValueLength> for ()

where MaxKeyLength: Get<u32>, MaxValueLength: Get<u32>,

fn on_governed_mapping_change( _key: BoundedString<MaxKeyLength>, _new_value: Option<BoundedVec<u8, MaxValueLength>>, _old_value: Option<BoundedVec<u8, MaxValueLength>>, )

impl<MaxKeyLength, MaxValueLength, A, B> OnGovernedMappingChange<MaxKeyLength, MaxValueLength> for (A, B)

where MaxKeyLength: Get<u32>, MaxValueLength: Get<u32>, A: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, B: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>,

fn on_governed_mapping_change( key: BoundedString<MaxKeyLength>, new_value: Option<BoundedVec<u8, MaxValueLength>>, old_value: Option<BoundedVec<u8, MaxValueLength>>, )

impl<MaxKeyLength, MaxValueLength, A, B, C> OnGovernedMappingChange<MaxKeyLength, MaxValueLength> for (A, B, C)

where MaxKeyLength: Get<u32>, MaxValueLength: Get<u32>, A: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, B: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, C: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>,

fn on_governed_mapping_change( key: BoundedString<MaxKeyLength>, new_value: Option<BoundedVec<u8, MaxValueLength>>, old_value: Option<BoundedVec<u8, MaxValueLength>>, )

impl<MaxKeyLength, MaxValueLength, A, B, C, D> OnGovernedMappingChange<MaxKeyLength, MaxValueLength> for (A, B, C, D)

where MaxKeyLength: Get<u32>, MaxValueLength: Get<u32>, A: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, B: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, C: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, D: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>,

fn on_governed_mapping_change( key: BoundedString<MaxKeyLength>, new_value: Option<BoundedVec<u8, MaxValueLength>>, old_value: Option<BoundedVec<u8, MaxValueLength>>, )

impl<MaxKeyLength, MaxValueLength, A, B, C, D, E> OnGovernedMappingChange<MaxKeyLength, MaxValueLength> for (A, B, C, D, E)

where MaxKeyLength: Get<u32>, MaxValueLength: Get<u32>, A: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, B: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, C: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, D: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>, E: OnGovernedMappingChange<MaxKeyLength, MaxValueLength>,

fn on_governed_mapping_change( key: BoundedString<MaxKeyLength>, new_value: Option<BoundedVec<u8, MaxValueLength>>, old_value: Option<BoundedVec<u8, MaxValueLength>>, )

Implementors