Enum RemovalRow 

pub enum RemovalRow {
    Absent {
        generation: u64,
    },
    Present {
        generation: u64,
        started: Timestamp,
        references: BTreeMap<ForeignKey, Reference>,
        deleted_circle: Option<Slot>,
    },
}

The row facts removal reads from merged state, never from prior removals.

Variants

Absent

An even generation, including zero for a row never inserted.

Fields

generation: u64

The row’s current even generation.

Present

An odd generation, whether or not a rule currently removes the row.

Fields

generation: u64

The row’s current odd generation.

started: Timestamp

The timestamp recorded for this generation in _coven_rows.

references: BTreeMap<ForeignKey, Reference>

Foreign-key names and their merged references.

deleted_circle: Option<Slot>

The slot deleting this row’s circle, if any.

Implementations

impl RemovalRow

pub fn generation(&self) -> u64

The generation in merged state, independent of removal rules.

pub fn present(&self) -> bool

Whether the row exists before the removal rules run.

Trait Implementations

impl Clone for RemovalRow

fn clone(&self) -> RemovalRow

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RemovalRow

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

Formats the value using the given formatter.

impl PartialEq for RemovalRow

fn eq(&self, other: &RemovalRow) -> 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 Eq for RemovalRow

impl StructuralPartialEq for RemovalRow