Enum NoAction 

pub enum NoAction {}

The edits of a resource whose document holds nothing. An app whose data lives entirely outside any document — credentials in this device’s encrypted vault, a device’s hardware — publishes that data as live rows and effects, and its resource is only the door they are published on. No value exists, so nothing is ever applied, undone or synced.

Trait Implementations

impl Action for NoAction

fn apply(&self, _doc: &mut AutoCommit) -> Result<(), ActionError>

Apply this action’s mutation to doc. See the trait contract.

fn locus(&self) -> ExecutionLocus

Where this action prefers to run. Defaults to ExecutionLocus::ClientLocal.

fn risk(&self) -> RiskLevel

The consequence class of this particular value — what it would do, not what its type can do. A generic edit action classifies each value (deleting a clip is Destructive, trimming one is not), and the host asks for the same confirmation a declared destructive action gets whenever requires_confirmation holds. Must be a pure function of self. Defaults to Low.

fn inverse_before(&self, doc: &AutoCommit) -> Option<Self>

where Self: Sized,

The document action that undoes this one when apply records an outside consequence in the document (an outbox entry, a filesystem op queue). Computed against the document before this action runs, so a delete can still read the row it removes.

fn inverse_encoded(&self, doc: &AutoCommit) -> Option<EncodedAction>

inverse_before as an encoded action, so the door can undo through apply after the concrete type has been erased.

fn change_kind(&self) -> ChangeKind

Whether this value changes the document’s content or is housekeeping about it (a read marker, a reading position). The executor writes it into the change’s ActionContext, where a workspace activity feed reads it. Must be a pure function of self. Defaults to Content.

fn action_kind(&self) -> ActionKind

What kind of action this value is: whether it only changes the document or also reaches outside it. Must be a pure function of self. An action that records an outside consequence in the document (an outbox entry) is Outside; the default is Undoable.

fn incoming_message(&self) -> bool

Whether this value records a message someone received (a chat post, a delivered mail). The executor marks its change with INCOMING_MESSAGE_FACET. Must be a pure function of self.

fn describe(&self, doc: &AutoCommit) -> Option<Described>

What this value does and to which item, as history records it: a field edit with its values before and after, a verb with its plain arguments, or a group of those. Read from doc as it is before the value applies, on the origin only; replicas replay it with the change. None lets the executor describe the value as the verb its encoded form names (crate::Described::from_encoded).

impl Clone for NoAction

fn clone(&self) -> NoAction

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NoAction

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for NoAction

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for NoAction

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 Copy for NoAction