Enum KeptRecord 

pub enum KeptRecord {
    Change(KeptChange),
    Execution {
        row: RowId,
        steps: u32,
    },
}

One row’s record of an accepted write part, as a device keeps it once the write is judged (D7.3): what later writes are judged against and what reopens the part’s leaves, without the values it replaced, the sources it built on or its SQL operations.

Variants

Change(KeptChange)

A net change.

Execution

Operations with no net change: only their count, the leaves they take.

Fields

row: RowId

The row.

steps: u32

How many operations the record listed, at least one.

Implementations

impl KeptRecord

pub fn keep( record: PartRecord<'_>, reference: impl Fn(&str) -> bool, ) -> Result<Self, Error>

The kept record of record, whose reference says which of its columns were references under its write’s schema.

pub fn conforms(&self, reference: impl Fn(&str) -> bool) -> bool

Whether this record keeps in full exactly the columns reference names, as KeptRecord::keep would.

pub fn row(&self) -> &RowId

The changed row.

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

The record’s bytes as a device keeps them.

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

Read back kept bytes, checking them again.

Trait Implementations

impl Clone for KeptRecord

fn clone(&self) -> KeptRecord

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeptRecord

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

Formats the value using the given formatter.

impl PartialEq for KeptRecord

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

impl StructuralPartialEq for KeptRecord