Struct PlannedChange 

pub struct PlannedChange {
    pub coll: String,
    pub id: String,
    pub kind: ChangeKind,
    pub base: Option<Value>,
    pub value: Option<Value>,
    pub source_hash: String,
}

One document the merge would write, and the evidence for writing it.

base rides along so a plan can be reviewed without re-deriving it: an operator reading a plan wants to see what the branch changed FROM, not just what it changed to.

Fields

coll: String

id: String

kind: ChangeKind

base: Option<Value>

value: Option<Value>

The value to write. None is a delete.

source_hash: String

The branch write that causes this replay.

Carried through the plan so execute can point the destination node back at what caused it. A merge that replayed anonymously could not have the edge added later: nothing downstream would know which destination write came from which branch write, and the answer is not derivable from the values.

PHASE 5B: becomes a qualified crate::cause::Cause once the branch lives in its own store and a bare hash stops being unambiguous.

Trait Implementations

impl Clone for PlannedChange

fn clone(&self) -> PlannedChange

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PlannedChange

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PlannedChange

fn deserialize<__D>( __deserializer: __D, ) -> Result<PlannedChange, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for PlannedChange

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for PlannedChange

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for PlannedChange