Trait mem_query::transaction::UndoLog

pub trait UndoLog<Root: ?Sized> {
    fn revert(self, root: &mut Root);
}

An action required to revert a failed transaction

Required methods

fn revert(self, root: &mut Root)

Implementations on Foreign Types

impl<Root: ?Sized> UndoLog<Root> for ()

The empty tuple is a No-op undo for everthing

fn revert(self, _: &mut Root)

impl<Root: ?Sized, A: UndoLog<Root>, B: UndoLog<Root>> UndoLog<Root> for (A, B)

A tuple of two logs (A,B) first reverts log A and then log B

fn revert(self, root: &mut Root)

impl<Root: ?Sized, T: UndoLog<Root>> UndoLog<Root> for Option<T>

fn revert(self, root: &mut Root)

impl<Root: ?Sized, A: UndoLog<Root>, B: UndoLog<Root>> UndoLog<Root> for Either<A, B>

fn revert(self, root: &mut Root)

impl<Root: ?Sized, T: UndoLog<Root>> UndoLog<Root> for Vec<T>

A vector of logs is reverted in reverse order: pushing operation logs onto the end of the vector as they are applied.

fn revert(self, root: &mut Root)

Implementors

impl<Root: ?Sized, AccessFn, Log, SubRoot> UndoLog<Root> for SubUndoLog<AccessFn, Log, SubRoot> where
    AccessFn: Accessor<Root, Dest = SubRoot>,
    Log: UndoLog<SubRoot>,
    SubRoot: ?Sized, 

fn revert(self, root: &mut Root)