Enum Leaf 

pub enum Leaf {
    Creation {
        row: RowId,
        generation: u64,
        creator: Option<ChangeId>,
    },
    Cell {
        row: RowId,
        generation: u64,
        kind: CellKind,
        column: String,
        value: ColumnValue<Value>,
    },
    Deletion {
        row: RowId,
        generation: u64,
    },
    Step {
        row: RowId,
        step: Step,
    },
}

One authenticated original fact of a part (D11).

Variants

Creation

An insert’s creation marker, with the original creation it copies. It carries no values, so it stays openable after every one changes.

Fields

row: RowId

The inserted row.

generation: u64

The generation before the insert.

creator: Option<ChangeId>

The copied row’s original creation, for an audience copy.

Cell

One column an insert or update set.

Fields

row: RowId

The changed row.

generation: u64

The generation before the change.

kind: CellKind

Insert or update.

column: String

The column.

value: ColumnValue<Value>

Its value and recorded parents.

Deletion

A delete’s marker.

Fields

row: RowId

The deleted row.

generation: u64

The generation before the delete.

Step

One SQL operation on the row, in execution order.

Fields

row: RowId

The row the operation changed.

step: Step

The operation.

Implementations

impl Leaf

pub fn encode(&self) -> Result<Vec<u8>, Error>

The leaf’s canonical bytes, the input of its keyed hash.

pub fn decode(bytes: &[u8]) -> Result<Self, Error>

Decode exactly one leaf.

pub fn row(&self) -> &RowId

The row the leaf describes.

Trait Implementations

impl Clone for Leaf

fn clone(&self) -> Leaf

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Leaf

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

Formats the value using the given formatter.

impl PartialEq for Leaf

fn eq(&self, other: &Leaf) -> 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 Leaf

impl StructuralPartialEq for Leaf