[][src]Trait sc_service::client::light::blockchain::AuxStore

pub trait AuxStore {
    fn insert_aux<'a, 'b, 'c, I, D>(
        &self,
        insert: I,
        delete: D
    ) -> Result<(), Error>
    where
        'b: 'a,
        'c: 'a,
        D: IntoIterator<Item = &'a &'b [u8]>,
        I: IntoIterator<Item = &'a (&'c [u8], &'c [u8])>
;
fn get_aux(&self, key: &[u8]) -> Result<Option<Vec<u8>>, Error>; }

Provides access to an auxiliary database.

Required methods

fn insert_aux<'a, 'b, 'c, I, D>(
    &self,
    insert: I,
    delete: D
) -> Result<(), Error> where
    'b: 'a,
    'c: 'a,
    D: IntoIterator<Item = &'a &'b [u8]>,
    I: IntoIterator<Item = &'a (&'c [u8], &'c [u8])>, 

Insert auxiliary data into key-value store.

Deletions occur after insertions.

fn get_aux(&self, key: &[u8]) -> Result<Option<Vec<u8>>, Error>

Query auxiliary data from key-value store.

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Implementations on Foreign Types

impl<Block> AuxStore for Backend<Block> where
    Block: Block
[src]

impl<Block> AuxStore for LightStorage<Block> where
    Block: Block
[src]

impl<Block> AuxStore for Blockchain<Block> where
    Block: Block
[src]

impl<Block> AuxStore for Backend<Block> where
    Block: Block,
    <Block as Block>::Hash: Ord
[src]

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Implementors

impl<'_, B, E, Block, RA> AuxStore for &'_ Client<B, E, Block, RA> where
    B: Backend<Block>,
    E: CallExecutor<Block>,
    Block: BlockT,
    Client<B, E, Block, RA>: ProvideRuntimeApi<Block>,
    <Client<B, E, Block, RA> as ProvideRuntimeApi<Block>>::Api: CoreApi<Block, Error = Error>, 
[src]

impl<B, E, Block, RA> AuxStore for Client<B, E, Block, RA> where
    B: Backend<Block>,
    E: CallExecutor<Block>,
    Block: BlockT,
    Self: ProvideRuntimeApi<Block>,
    Self::Api: CoreApi<Block, Error = Error>, 
[src]

fn insert_aux<'a, 'b: 'a, 'c: 'a, I: IntoIterator<Item = &'a (&'c [u8], &'c [u8])>, D: IntoIterator<Item = &'a &'b [u8]>>(
    &self,
    insert: I,
    delete: D
) -> Result<()>
[src]

Insert auxiliary data into key-value store.

fn get_aux(&self, key: &[u8]) -> Result<Option<Vec<u8>>>[src]

Query auxiliary data from key-value store.

impl<S: AuxStore, H: Hasher> AuxStore for sc_service::client::light::backend::Backend<S, H>[src]

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