Trait TxReadContext 

pub trait TxReadContext {
    type Error;

    // Required methods
    fn with_read_raw<T>(
        &self,
        key: RecordKey,
        f: impl FnOnce(&[u8]) -> T,
    ) -> Result<Option<T>, Self::Error>;
    fn for_each_record_key(
        &self,
        kind: RecordKind,
        f: &mut dyn FnMut(RecordKey),
    );
}

Read-only raw transaction capability used by typed convenience APIs.

Required Associated Types

type Error

Host error type.

Required Methods

fn with_read_raw<T>( &self, key: RecordKey, f: impl FnOnce(&[u8]) -> T, ) -> Result<Option<T>, Self::Error>

Reads a record by key.

fn for_each_record_key(&self, kind: RecordKind, f: &mut dyn FnMut(RecordKey))

Iterates record keys for one record kind.

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.

Implementors