Trait libpijul::changestore::ChangeStore

pub trait ChangeStore {
    type Error: Error + Debug + Send + Sync + From<Utf8Error> + From<ChangeError> + 'static;
    fn has_contents(&self, hash: Hash, change_id: Option<ChangeId>) -> bool;
    fn get_contents<F: Fn(ChangeId) -> Option<Hash>>(
        &self, 
        hash: F, 
        key: Vertex<ChangeId>, 
        buf: &mut Vec<u8>
    ) -> Result<usize, Self::Error>;
    fn get_contents_ext(
        &self, 
        key: Vertex<Option<Hash>>, 
        buf: &mut Vec<u8>
    ) -> Result<usize, Self::Error>;
    fn change_deletes_position<F: Fn(ChangeId) -> Option<Hash>>(
        &self, 
        hash: F, 
        change: ChangeId, 
        pos: Position<Option<Hash>>
    ) -> Result<Vec<Hash>, Self::Error>;
    fn save_change(&self, p: &Change) -> Result<Hash, Self::Error>;
    fn del_change(&self, h: &Hash) -> Result<bool, Self::Error>;
    fn get_change(&self, h: &Hash) -> Result<Change, Self::Error>;

    fn get_header(&self, h: &Hash) -> Result<ChangeHeader, Self::Error> { ... }
    fn get_dependencies(&self, hash: &Hash) -> Result<Vec<Hash>, Self::Error> { ... }
    fn get_extra_known(&self, hash: &Hash) -> Result<Vec<Hash>, Self::Error> { ... }
    fn get_changes(
        &self, 
        hash: &Hash
    ) -> Result<Vec<Hunk<Option<Hash>, Local>>, Self::Error> { ... }
    fn knows(&self, hash0: &Hash, hash1: &Hash) -> Result<bool, Self::Error> { ... }
    fn has_edge(
        &self, 
        change: Hash, 
        from: Position<Option<Hash>>, 
        to: Position<Option<Hash>>, 
        flags: EdgeFlags
    ) -> Result<bool, Self::Error> { ... }
    fn get_file_meta<'a, F: Fn(ChangeId) -> Option<Hash>>(
        &self, 
        hash: F, 
        vertex: Vertex<ChangeId>, 
        buf: &'a mut Vec<u8>
    ) -> Result<FileMetadata<'a>, Self::Error> { ... }
}

A trait for storing changes and reading from them.

Associated Types

type Error: Error + Debug + Send + Sync + From<Utf8Error> + From<ChangeError> + 'static

Required methods

fn has_contents(&self, hash: Hash, change_id: Option<ChangeId>) -> bool

fn get_contents<F: Fn(ChangeId) -> Option<Hash>>(
    &self,
    hash: F,
    key: Vertex<ChangeId>,
    buf: &mut Vec<u8>
) -> Result<usize, Self::Error>

fn get_contents_ext(
    &self,
    key: Vertex<Option<Hash>>,
    buf: &mut Vec<u8>
) -> Result<usize, Self::Error>

fn change_deletes_position<F: Fn(ChangeId) -> Option<Hash>>(
    &self,
    hash: F,
    change: ChangeId,
    pos: Position<Option<Hash>>
) -> Result<Vec<Hash>, Self::Error>

fn save_change(&self, p: &Change) -> Result<Hash, Self::Error>

fn del_change(&self, h: &Hash) -> Result<bool, Self::Error>

fn get_change(&self, h: &Hash) -> Result<Change, Self::Error>

Provided methods

fn get_header(&self, h: &Hash) -> Result<ChangeHeader, Self::Error>

fn get_dependencies(&self, hash: &Hash) -> Result<Vec<Hash>, Self::Error>

fn get_extra_known(&self, hash: &Hash) -> Result<Vec<Hash>, Self::Error>

fn get_changes(
    &self,
    hash: &Hash
) -> Result<Vec<Hunk<Option<Hash>, Local>>, Self::Error>

fn knows(&self, hash0: &Hash, hash1: &Hash) -> Result<bool, Self::Error>

fn has_edge(
    &self,
    change: Hash,
    from: Position<Option<Hash>>,
    to: Position<Option<Hash>>,
    flags: EdgeFlags
) -> Result<bool, Self::Error>

fn get_file_meta<'a, F: Fn(ChangeId) -> Option<Hash>>(
    &self,
    hash: F,
    vertex: Vertex<ChangeId>,
    buf: &'a mut Vec<u8>
) -> Result<FileMetadata<'a>, Self::Error>

Implementors

impl ChangeStore for FileSystem

impl ChangeStore for Memory