Trait lmdb_rs::core::IterateCursor
[−]
[src]
pub trait IterateCursor {
fn init_cursor<'a, 'b: 'a>(&'a self, cursor: &mut Cursor<'b>) -> bool;
fn move_to_next<'iter, 'cursor: 'iter>(
&'iter self,
cursor: &'cursor mut Cursor<'cursor>
) -> bool;
fn get_size_hint(&self, _cursor: &Cursor) -> (usize, Option<usize>) { ... }
}Allows the cration of custom cursor iteration behaviours.
Required Methods
fn init_cursor<'a, 'b: 'a>(&'a self, cursor: &mut Cursor<'b>) -> bool
Returns true if initialization successful, for example that the key exists.
fn move_to_next<'iter, 'cursor: 'iter>(
&'iter self,
cursor: &'cursor mut Cursor<'cursor>
) -> bool
&'iter self,
cursor: &'cursor mut Cursor<'cursor>
) -> bool
Returns true if there is still data and iterator is in correct range
Provided Methods
fn get_size_hint(&self, _cursor: &Cursor) -> (usize, Option<usize>)
Returns size hint considering current state of cursor
Implementors
impl<'iter> IterateCursor for CursorKeyRangeIter<'iter>impl<'iter> IterateCursor for CursorFromKeyIter<'iter>impl<'iter> IterateCursor for CursorToKeyIter<'iter>impl<'iter> IterateCursor for CursorIterimpl<'iter> IterateCursor for CursorItemIter<'iter>