Trait casper_execution_engine::storage::transaction_source::TransactionSource

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pub trait TransactionSource<'a> {
    type Error;
    type Handle;
    type ReadTransaction: Readable<Error = Self::Error, Handle = Self::Handle>;
    type ReadWriteTransaction: Readable<Error = Self::Error, Handle = Self::Handle> + Writable<Error = Self::Error, Handle = Self::Handle>;

    // Required methods
    fn create_read_txn(&'a self) -> Result<Self::ReadTransaction, Self::Error>;
    fn create_read_write_txn(
        &'a self
    ) -> Result<Self::ReadWriteTransaction, Self::Error>;
}
Expand description

A source of transactions e.g. values that implement Readable and/or Writable.

Required Associated Types§

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type Error

An error which can occur while creating a read or read-write transaction.

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type Handle

An entity which is being read from or written to during a transaction.

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type ReadTransaction: Readable<Error = Self::Error, Handle = Self::Handle>

Represents the type of read transactions.

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type ReadWriteTransaction: Readable<Error = Self::Error, Handle = Self::Handle> + Writable<Error = Self::Error, Handle = Self::Handle>

Represents the type of read-write transactions.

Required Methods§

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fn create_read_txn(&'a self) -> Result<Self::ReadTransaction, Self::Error>

Creates a read transaction.

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fn create_read_write_txn( &'a self ) -> Result<Self::ReadWriteTransaction, Self::Error>

Creates a read-write transaction.

Implementors§