Struct Tree 

pub struct Tree<E> { /* private fields */ }

A flash-sympathetic persistent lock-free B+ tree.

Implementations

impl<E> Tree<E>

where E: Encryption,

pub fn get<K: AsRef<[u8]>>(&self, key: K) -> Result<Option<IVec>>

pub fn insert<K, V>(&self, key: K, value: V) -> Result<Option<IVec>>

where K: AsRef<[u8]>, V: Into<IVec>,

pub fn remove<K: AsRef<[u8]>>(&self, key: K) -> Result<Option<IVec>>

pub fn apply_batch(&self, batch: Batch) -> Result<()>

pub fn transaction<F, A, Error>(&self, f: F) -> TransactionResult<A, Error>

where F: Fn(&TransactionalTree<E>) -> ConflictableTransactionResult<A, Error>,

pub fn watch_prefix<P: AsRef<[u8]>>(&self, prefix: P) -> Result<Subscriber<E>>

pub fn compare_and_swap<K, OV, NV>( &self, key: K, old: Option<OV>, new: Option<NV>, ) -> Result<Result<(), CompareAndSwapError>>

where K: AsRef<[u8]>, OV: AsRef<[u8]>, NV: Into<IVec>,

pub fn update_and_fetch<K, V, F>(&self, key: K, f: F) -> Result<Option<IVec>>

where K: AsRef<[u8]>, F: FnMut(Option<IVec>) -> Option<V>, V: Into<IVec>,

pub fn fetch_and_update<K, V, F>(&self, key: K, f: F) -> Result<Option<IVec>>

where K: AsRef<[u8]>, F: FnMut(Option<IVec>) -> Option<V>, V: Into<IVec>,

pub fn flush(&self) -> Result<usize>

pub async fn flush_async(&self) -> Result<usize>

pub fn contains_key<K: AsRef<[u8]>>(&self, key: K) -> Result<bool>

pub fn get_lt<K>(&self, key: K) -> Result<Option<(IVec, IVec)>>

where K: AsRef<[u8]>,

pub fn get_gt<K>(&self, key: K) -> Result<Option<(IVec, IVec)>>

where K: AsRef<[u8]>,

pub fn first(&self) -> Result<Option<(IVec, IVec)>>

pub fn last(&self) -> Result<Option<(IVec, IVec)>>

pub fn pop_min(&self) -> Result<Option<(IVec, IVec)>>

pub fn pop_max(&self) -> Result<Option<(IVec, IVec)>>

pub fn iter(&self) -> Iter<E>

pub fn range<K, R>(&self, range: R) -> Result<Iter<E>>

where K: AsRef<[u8]>, R: RangeBounds<K>,

pub fn scan_prefix<P>(&self, prefix: P) -> Result<Iter<E>>

where P: AsRef<[u8]>,

pub fn len(&self) -> usize

pub fn is_empty(&self) -> bool

pub fn clear(&self) -> Result<()>

pub fn name(&self) -> Result<IVec>

pub fn checksum(&self) -> Result<u32>

impl<E> Tree<E>

where E: Encryption + 'static,

pub fn merge<K, V>(&self, key: K, value: V) -> Result<Option<IVec>>

where K: AsRef<[u8]>, V: AsRef<[u8]>,

pub fn set_merge_operator(&self, merge_operator: impl MergeOperator + 'static)

Trait Implementations

impl<E: Clone> Clone for Tree<E>

fn clone(&self) -> Tree<E>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<E: Debug> Debug for Tree<E>

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

Formats the value using the given formatter.