Struct MultiReadTransaction 

pub struct MultiReadTransaction { /* private fields */ }

Implementations

impl MultiReadTransaction

pub fn new( engine: MultiTransaction, version: Option<CommitVersion>, ) -> Result<Self>

pub fn new_with_lease( engine: MultiTransaction, lease: VersionLeaseGuard, ) -> Result<Self>

impl MultiReadTransaction

pub fn version(&self) -> CommitVersion

pub fn read_as_of_version_exclusive(&mut self, version: CommitVersion)

pub fn read_as_of_version_inclusive(&mut self, version: CommitVersion)

pub fn get<K: Into<TaggedKey> + Clone>( &self, key: &K, ) -> Result<Option<TransactionValue>>

pub fn get_many( &self, keys: &[EncodedKey], ) -> Result<HashMap<EncodedKey, MultiVersionRow>>

pub fn contains<K: Into<TaggedKey> + Clone>(&self, key: &K) -> Result<bool>

pub fn scan(&self) -> Result<MultiVersionBatch<TaggedKey>>

pub fn prefix( &self, prefix: &EncodedKey, ) -> Result<MultiVersionBatch<TaggedKey>>

pub fn prefix_rev( &self, prefix: &EncodedKey, ) -> Result<MultiVersionBatch<TaggedKey>>

pub fn range_encoded( &self, range: EncodedKeyRange, scope: RangeScope, batch_size: usize, ) -> Box<dyn Iterator<Item = Result<MultiVersionRow<TaggedKey>>> + Send + '_>

pub fn range_rev_encoded( &self, range: EncodedKeyRange, scope: RangeScope, batch_size: usize, ) -> Box<dyn Iterator<Item = Result<MultiVersionRow<TaggedKey>>> + Send + '_>

pub fn range( &self, range: TaggedKeyBoundRange, scope: RangeScope, batch_size: usize, ) -> Box<dyn Iterator<Item = Result<MultiVersionRow<TaggedKey>>> + Send + '_>

pub fn range_row( &self, storage: StorageId, start: Bound<StorageRowKey>, end: Bound<StorageRowKey>, scope: RangeScope, batch_size: usize, ) -> Box<dyn Iterator<Item = Result<MultiVersionRow<StorageRowKey>>> + Send + '_>

pub fn range_partitioned_row( &self, storage: StorageId, start: Bound<StoragePartitionedRowKey>, end: Bound<StoragePartitionedRowKey>, scope: RangeScope, batch_size: usize, ) -> Box<dyn Iterator<Item = Result<MultiVersionRow<StoragePartitionedRowKey>>> + Send + '_>

pub fn range_rev( &self, range: TaggedKeyBoundRange, scope: RangeScope, batch_size: usize, ) -> Box<dyn Iterator<Item = Result<MultiVersionRow<TaggedKey>>> + Send + '_>

Trait Implementations

impl Clone for MultiReadTransaction

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.