Enum kv::Cursor

pub enum Cursor<'a, K, V> {
    ReadOnly(RoCursor<'a>),
    ReadWrite(RwCursor<'a>),
    Phantom(Hidden<K, V>),
}

Iterable access to the database

Variants

ReadOnly(RoCursor<'a>)

Readonly access

ReadWrite(RwCursor<'a>)

Read-write access

Phantom(Hidden<K, V>)

Type information

Methods

impl<'a, K: Key, V: Value<'a>> Cursor<'a, K, V>

pub fn is_read_only(&self) -> bool

Returns true when the transaction is ReadOnly

pub fn iter(&mut self) -> Iter<'a, K, V>

Iterate over all key/value pairs

pub fn iter_from(&mut self, key: &'a K) -> Iter<'a, K, V>

Iterate over key/values pairs starting at key

pub fn set<V0: Into<V>>(&mut self, key: &'a K, value: V0) -> Result<(), Error>

Insert a value at the current position

pub fn del(&mut self) -> Result<(), Error>

Insert a value at the current position

pub fn get(
    &self,
    key: Option<&K>,
    op: CursorOp
) -> Result<(Option<K>, V), Error> where
    K: From<&'a [u8]>, 

Get a value from the cursor