Struct DbIter 

pub struct DbIter { /* private fields */ }

User-facing iterator over a consistent snapshot of the database.

Applies snapshot filtering, tombstone handling, and version merging across the active memtable, any in-progress flush memtable, and all SSTable files.

Obtain via Db::new_iterator. The iterator starts unpositioned; call seek_to_first, seek_to_last, or seek before reading keys or values. Supports both forward (next) and backward (prev) traversal; direction switches are handled transparently.

Implementations

impl DbIter

pub fn valid(&self) -> bool

Returns true if the iterator is positioned at a valid entry.

pub fn seek_to_first(&mut self)

Position at the first user-visible entry.

pub fn seek_to_last(&mut self)

Position at the last user-visible entry.

pub fn seek(&mut self, key: &[u8])

Position at the first user-visible entry with key >= target.

pub fn next(&mut self)

Advance to the next user-visible entry.

Panics

Panics (debug) if valid() is false.

pub fn prev(&mut self)

Move to the previous user-visible entry.

Panics

Panics (debug) if valid() is false.

pub fn key(&self) -> &[u8]

Current user key. Only valid when valid() is true.

pub fn value(&self) -> &[u8]

Current value. Only valid when valid() is true.

pub fn status(&self) -> Option<&Error>

Returns a sticky error if the iterator encountered corruption.