Struct RetractActivity 

pub struct RetractActivity {
    pub schema_version: u16,
    pub activity: ActivityId,
}

Retract an existing Activity — tombstones its record and removes it from the (actor, verb, target.key()) idempotency index (E-act-4).

Fields

schema_version: u16

Wire-level schema version tag.

activity: ActivityId

Target Activity handle.

Trait Implementations

impl ActionCompute for RetractActivity

fn compute(&self, ctx: &ActionContext<'_>) -> Vec<Op>

Translate this action into a list of Ops the kernel will then authorize, dispatch, and apply. Must be pure — A11 SOCIAL-CONTRACT until the subset-Rust checker promotes it to MACHINE-CHECKED.

impl ActionCompute for RetractActivity

fn compute<'i>(&self, _ctx: &mut ActionContext<'i>) -> Result<(), ActionError>

Run the compute body. Emit events via ctx.emit_event, derive new ids via ctx.next_id, and return Err(ActionError::...) to reject.

impl ActionDeriv for RetractActivity

const TYPE_CODE: TypeCode

Stable dispatch identifier. Set via #[arkhe(type_code = N, ...)].

const SCHEMA_VERSION: u32

Version tag for canonical bytes. Bumping invalidates older serialized bodies.

impl ArkheAction for RetractActivity

const TYPE_CODE: u32 = 66562u32

Runtime TypeCode registry pin.

const SCHEMA_VERSION: u16 = 1u16

Monotone schema version — bump rules identical to ArkheComponent.

const BAND: Band = 1u8

Determinism band — 1 (Core) / 2 (Projection) / 3 (Protocol).

const IDEMPOTENT: bool = false

Opt-in idempotency flag. true iff the deriving struct carries an idempotency_key: Option<[u8; 16]> field (validated at derive time). false by default — non-idempotent Actions are still legal.

fn type_code() -> TypeCode

Convenience TypeCode accessor.

impl Clone for RetractActivity

fn clone(&self) -> RetractActivity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RetractActivity

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RetractActivity

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for RetractActivity

fn eq(&self, other: &RetractActivity) -> 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 Serialize for RetractActivity

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for RetractActivity

impl Sealed for RetractActivity

impl StructuralPartialEq for RetractActivity