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PatternContinuation

nodedb_cluster::distributed_graph::pattern_match

Struct PatternContinuation

pub struct PatternContinuation {
    pub target_shard: u32,
    pub source_shard: u32,
    pub bindings: HashMap<String, String>,
    pub next_triple_idx: usize,
    pub start_node: String,
    pub start_binding: String,
}

Expand description

A partial MATCH result that needs continuation on another shard.

Contains the current variable bindings and the index of the next triple to execute in the pattern chain. The target shard resumes from next_triple_idx using the provided bindings.

Fields§

§target_shard: u32

Target shard that should continue execution.

§source_shard: u32

Source shard that generated this continuation.

§bindings: HashMap<String, String>

Current variable bindings (node_name → value).

§next_triple_idx: usize

Index of the next triple to execute in the chain.

§start_node: String

The ghost node name that the target shard should start from.

§start_binding: String

The binding variable name for the start node.

Implementations§

impl PatternContinuation

pub fn from_resolved(args: ResolvedContinuationArgs) -> Self

Construct a continuation from its raw routing-resolved fields.

The Control Plane resolves target_shard (the owning vShard of the frontier node) and source_shard (the vShard that emitted the frontier entry) via its routing table, then assembles the continuation here. The routing classification itself stays in the CP layer — nodedb-cluster has no access to the routing table — but the field assembly lives with the type so the shape cannot drift from the struct definition.

Trait Implementations§

impl Clone for PatternContinuation

fn clone(&self) -> PatternContinuation

Returns a duplicate of the value. Read more

1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more

impl Debug for PatternContinuation

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

Formats the value using the given formatter. Read more

impl<'de> Deserialize<'de> for PatternContinuation

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more

impl<'__msgpack_de> FromMessagePack<'__msgpack_de> for PatternContinuation

fn read<R: Read<'__msgpack_de>>(reader: &mut R) -> Result<Self, Error>
where Self: Sized,

Reads the MessagePack representation of this value from the provided reader.

impl Serialize for PatternContinuation

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer,

Serialize this value into the given Serde serializer. Read more

impl ToMessagePack for PatternContinuation

fn write<W: Write>(&self, writer: &mut W) -> Result<(), Error>

Writes the MessagePack representation of this value into the provided writer.

Auto Trait Implementations§

impl Freeze for PatternContinuation

impl RefUnwindSafe for PatternContinuation

impl Send for PatternContinuation

impl Sync for PatternContinuation

impl Unpin for PatternContinuation

impl UnsafeUnpin for PatternContinuation

impl UnwindSafe for PatternContinuation

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)

Performs copy-assignment from self to dest. Read more

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