Trait git_odb::Find

pub trait Find {
    type Error: Error + 'static;
    fn contains(&self, id: impl AsRef<oid>) -> bool;
    fn try_find<'a>(
        &self, 
        id: impl AsRef<oid>, 
        buffer: &'a mut Vec<u8>
    ) -> Result<Option<Data<'a>>, Self::Error>;
}

Describe how object can be located in an object store.

Notes

Find effectively needs generic associated types to allow a trait for the returned object type. Until then, we will have to make due with explicit types and give them the potentially added features we want.

Associated Types

type Error: Error + 'static

The error returned by try_find()

Required methods

fn contains(&self, id: impl AsRef<oid>) -> bool

Returns true if the object exists in the database.

fn try_find<'a>(
    &self,
    id: impl AsRef<oid>,
    buffer: &'a mut Vec<u8>
) -> Result<Option<Data<'a>>, Self::Error>

Find an object matching id in the database while placing its raw, undecoded data into buffer.

Returns Some object if it was present in the database, or the error that occurred during lookup or object retrieval.

Implementations on Foreign Types

impl<T> Find for &T where
    T: Find, 

type Error = T::Error

fn contains(&self, id: impl AsRef<oid>) -> bool

fn try_find<'a>(
    &self,
    id: impl AsRef<oid>,
    buffer: &'a mut Vec<u8>
) -> Result<Option<Data<'a>>, Self::Error>

impl<T> Find for Rc<T> where
    T: Find, 

type Error = T::Error

fn contains(&self, id: impl AsRef<oid>) -> bool

fn try_find<'a>(
    &self,
    id: impl AsRef<oid>,
    buffer: &'a mut Vec<u8>
) -> Result<Option<Data<'a>>, Self::Error>

impl<T> Find for Arc<T> where
    T: Find, 

type Error = T::Error

fn contains(&self, id: impl AsRef<oid>) -> bool

fn try_find<'a>(
    &self,
    id: impl AsRef<oid>,
    buffer: &'a mut Vec<u8>
) -> Result<Option<Data<'a>>, Self::Error>

Implementors

impl<S> Find for Handle<S> where
    S: Deref<Target = Store> + Clone,
    Self: Find, 

type Error = <Self as Find>::Error

impl<S> Find for Cache<S> where
    S: Find, 

type Error = S::Error