Struct ColumnStore 

pub struct ColumnStore { /* private fields */ }

Per-field typed columns. Homogeneous Int/Float/Bool/Str use a dense vec plus presence bitmap; mixed-type fields and lists spill to a HashMap (slow path).

On-disk (V6) shape is still HashMap<String, HashMap<u32, Value>>.

Implementations

impl ColumnStore

pub fn new() -> Self

pub fn set(&mut self, node: u32, field: &str, value: Value)

pub fn get(&self, node: u32, field: &str) -> Option<&Value>

pub fn column(&self, field: &str) -> ColumnHandle<'_>

Return a pre-resolved column handle for field.

Hashes the field name once so that repeated ColumnHandle::get calls pay only the inner node-id lookup cost, not the outer string hash. Returns a handle that always returns None when the field is absent.

pub fn fields(&self) -> impl Iterator<Item = &str>

pub fn remove(&mut self, node: u32, field: &str) -> Option<Value>

Remove the value stored at (node, field) and return it, or None if absent. Prunes the column’s inner map entry when it becomes empty.

pub fn remove_all(&mut self, node: u32)

Drop every field stored for node. Idempotent: a node with no remaining props (or an id that was never written) is a no-op. Used by DeleteNode after rule retraction and user-edge sweep. Field iteration order is not observable — the resulting store is identical regardless of HashMap order.

Trait Implementations

impl Clone for ColumnStore

fn clone(&self) -> ColumnStore

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColumnStore

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

Formats the value using the given formatter.

impl Default for ColumnStore

fn default() -> ColumnStore

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ColumnStore

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

Deserialize this value from the given Serde deserializer.

impl Serialize for ColumnStore

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

Serialize this value into the given Serde serializer.