Trait lmdb_rs_m::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`

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>
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impl<'iter> IterateCursor for CursorFromKeyIter<'iter>
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impl<'iter> IterateCursor for CursorToKeyIter<'iter>
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impl<'iter> IterateCursor for CursorIter
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impl<'iter> IterateCursor for CursorItemIter<'iter>
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