Struct fuel_core_storage::transactional::InMemoryTransaction

pub struct InMemoryTransaction<S> { /* private fields */ }

In memory transaction accumulates Changes over the storage.

Trait Implementations

impl<Column, S> BatchOperations for InMemoryTransaction<S>

where Column: StorageColumn, S: KeyValueInspect<Column = Column>,

fn batch_write<I>(&mut self, column: Column, entries: I) -> StorageResult<()>

where I: Iterator<Item = (Vec<u8>, WriteOperation)>,

Writes the batch of the entries into the storage.

impl<S: Clone> Clone for InMemoryTransaction<S>

fn clone(&self) -> InMemoryTransaction<S>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<S: Debug> Debug for InMemoryTransaction<S>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<S: Default> Default for InMemoryTransaction<S>

fn default() -> InMemoryTransaction<S>

Returns the “default value” for a type.

impl<Column, S> KeyValueInspect for InMemoryTransaction<S>

where Column: StorageColumn, S: KeyValueInspect<Column = Column>,

type Column = Column

The type of the column.

fn exists(&self, key: &[u8], column: Self::Column) -> StorageResult<bool>

Checks if the value exists in the storage.

fn size_of_value( &self, key: &[u8], column: Self::Column, ) -> StorageResult<Option<usize>>

Returns the size of the value in the storage.

fn get(&self, key: &[u8], column: Self::Column) -> StorageResult<Option<Value>>

Returns the value from the storage.

fn read( &self, key: &[u8], column: Self::Column, buf: &mut [u8], ) -> StorageResult<Option<usize>>

Reads the value from the storage into the buf and returns the number of read bytes.

impl<Column, S> KeyValueMutate for InMemoryTransaction<S>

where Column: StorageColumn, S: KeyValueInspect<Column = Column>,

fn put( &mut self, key: &[u8], column: Self::Column, value: Value, ) -> StorageResult<()>

Inserts the Value into the storage.

fn replace( &mut self, key: &[u8], column: Self::Column, value: Value, ) -> StorageResult<Option<Value>>

Put the Value into the storage and return the old value.

fn write( &mut self, key: &[u8], column: Self::Column, buf: &[u8], ) -> StorageResult<usize>

Writes the buf into the storage and returns the number of written bytes.

fn take( &mut self, key: &[u8], column: Self::Column, ) -> StorageResult<Option<Value>>

Removes the value from the storage and returns it.

fn delete(&mut self, key: &[u8], column: Self::Column) -> StorageResult<()>

Removes the value from the storage.

impl<Storage> Modifiable for InMemoryTransaction<Storage>

fn commit_changes(&mut self, changes: Changes) -> StorageResult<()>

Commits the changes into the storage.