Trait holochain_state::prelude::ReadManager

pub trait ReadManager<'e> {
    fn with_reader<E, R, F>(&'e mut self, f: F) -> Result<R, E>
    where
        E: From<DatabaseError>,
        F: 'e + FnOnce(Transaction<'_>) -> Result<R, E>;
    fn with_reader_test<R, F>(&'e mut self, f: F) -> R
    where
        F: 'e + FnOnce(Transaction<'_>) -> R;
}

Implementors are able to create a new read-only DB transaction

Required methods

fn with_reader<E, R, F>(&'e mut self, f: F) -> Result<R, E> where
    E: From<DatabaseError>,
    F: 'e + FnOnce(Transaction<'_>) -> Result<R, E>, 

Run a closure, passing in a new read-only transaction

fn with_reader_test<R, F>(&'e mut self, f: F) -> R where
    F: 'e + FnOnce(Transaction<'_>) -> R, 

Same as with_reader, but with no Results: everything gets unwrapped

Implementations on Foreign Types

impl<'e> ReadManager<'e> for PConn

pub fn with_reader<E, R, F>(&'e mut self, f: F) -> Result<R, E> where
    E: From<DatabaseError>,
    F: 'e + FnOnce(Transaction<'_>) -> Result<R, E>, 

pub fn with_reader_test<R, F>(&'e mut self, f: F) -> R where
    F: 'e + FnOnce(Transaction<'_>) -> R, 

Implementors