Struct robt::db::Builder

pub struct Builder<K, V, D> { /* fields omitted */ }

Build an immutable read-only btree index from an iterator.

Refer to package documentation for typical work-flow.

Implementations

impl<K, V, D> Builder<K, V, D>

pub fn initial(config: Config, meta: Vec<u8>) -> Result<Self>

Build a fresh index, using configuration and snapshot specific meta-data.

pub fn incremental(
    config: Config,
    vlog: Option<OsString>,
    meta: Vec<u8>
) -> Result<Self>

Build an incremental index on top of an existing index. Note that the entire btree along with root-node, intermediate-nodes and leaf-nodes shall be built fresh from the iterator, but entries form the iterator can hold reference, as {fpos, length} to values and deltas within a value-log file. Instead of creating a fresh value-log file, incremental build will serialize values and deltas into supplied vlog file in append only fashion.

Trait Implementations

impl<K, V, D, B> BuildIndex<K, V, D, B> for Builder<K, V, D> where
    K: Clone + Hash + IntoCbor,
    V: Clone + IntoCbor,
    D: Clone + IntoCbor,
    B: Bloom, 

type Err = Error

fn build_index<I>(
    &mut self,
    iter: I,
    bitmap: B,
    seqno: Option<u64>
) -> Result<()> where
    I: Iterator<Item = Entry<K, V, D>>, 

Build an index form iterator. Optionally a bitmap can be specified to implement a bloom filter. If bitmap filter is not required, pass bitmap as NoBitmap. seqno can be supplied to set the snapshot’s seqno, if supplied as None, snapshot will take is latest-seqno as the high seqno found in the iterated entries.