Enum KeptValue 

pub enum KeptValue {
    Value(Value),
    Digest([u8; 32]),
}

A value an accepted change wrote, as its kept record holds it (D7.3): in full when the column was a reference under the change’s schema, since a later write’s foreign-key actions read it and the parents it named; else only its digest, which tells whether a later delete shows the same value.

Variants

Value(Value)

The value itself.

Digest([u8; 32])

coven_crypto::kept_value_digest of the value’s encoding.

Implementations

impl KeptValue

pub fn digest(value: &Value) -> Result<[u8; 32], Error>

The digest a kept record holds for value.

pub fn matches(&self, value: &Value) -> Result<bool, Error>

Whether value is the value this one keeps.

Trait Implementations

impl Clone for KeptValue

fn clone(&self) -> KeptValue

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for KeptValue

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

Formats the value using the given formatter.

impl PartialEq for KeptValue

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

impl StructuralPartialEq for KeptValue