Trait casper_execution_engine::storage::transaction_source::Readable[−][src]

pub trait Readable: Transaction {
    fn read(
        &self, 
        handle: Self::Handle, 
        key: &[u8]
    ) -> Result<Option<Bytes>, Self::Error>;
}
Expand description

A transaction with the capability to read from a given Handle.

Required methods

fn read(
    &self,
    handle: Self::Handle,
    key: &[u8]
) -> Result<Option<Bytes>, Self::Error>[src]

Returns the value from the corresponding key from a given Transaction::Handle.

Implementations on Foreign Types

impl<'a> Readable for RoTransaction<'a>[src]

fn read(
    &self,
    handle: Self::Handle,
    key: &[u8]
) -> Result<Option<Bytes>, Self::Error>[src]

impl<'a> Readable for RwTransaction<'a>[src]

fn read(
    &self,
    handle: Self::Handle,
    key: &[u8]
) -> Result<Option<Bytes>, Self::Error>[src]

Implementors

impl Readable for InMemoryReadTransaction[src]

fn read(
    &self,
    handle: Self::Handle,
    key: &[u8]
) -> Result<Option<Bytes>, Self::Error>[src]

impl<'a> Readable for InMemoryReadWriteTransaction<'a>[src]

fn read(
    &self,
    handle: Self::Handle,
    key: &[u8]
) -> Result<Option<Bytes>, Self::Error>[src]