Struct CatalogDelta 

pub struct CatalogDelta {
    pub from_epoch: u64,
    pub to_epoch: u64,
    pub table_specs: BTreeMap<Symbol, CatalogTableSpec>,
    pub rows_changed: BTreeMap<Symbol, BTreeMap<Symbol, CatalogSnapshotRow>>,
    pub rows_deleted: BTreeMap<Symbol, BTreeMap<Symbol, CatalogDeletedRow>>,
    pub sequence_changes: BTreeMap<Symbol, CatalogSequenceChange>,
}

The change set between two catalog epochs: table specs, changed and deleted rows, and sequence changes.

Produced by CatalogStore::delta_since and applied by CatalogStore::apply_delta. See the README section “Snapshots and deltas”.

Fields

from_epoch: u64

Epoch the delta starts from (exclusive, or 0 for a full delta).

to_epoch: u64

Epoch the delta brings the store to.

table_specs: BTreeMap<Symbol, CatalogTableSpec>

Table specs that must exist or match in the target store.

rows_changed: BTreeMap<Symbol, BTreeMap<Symbol, CatalogSnapshotRow>>

Rows inserted or replaced, by table and key.

rows_deleted: BTreeMap<Symbol, BTreeMap<Symbol, CatalogDeletedRow>>

Rows deleted, by table and key.

sequence_changes: BTreeMap<Symbol, CatalogSequenceChange>

Sequence advances, by sequence name.

Trait Implementations

impl Clone for CatalogDelta

fn clone(&self) -> CatalogDelta

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for CatalogDelta

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for CatalogDelta

impl PartialEq for CatalogDelta

fn eq(&self, other: &CatalogDelta) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for CatalogDelta