Struct Entity 

pub struct Entity {
    pub id: EntityId,
    pub label: String,
    pub properties: HashMap<String, Value>,
}

A node in the knowledge graph.

Fields

id: EntityId

Unique identifier.

label: String

Human-readable label (e.g. “Person”, “Concept”).

properties: HashMap<String, Value>

Arbitrary key-value properties.

Implementations

impl Entity

pub fn new(id: impl Into<String>, label: impl Into<String>) -> Self

Construct a new entity with no properties.

pub fn with_properties( id: impl Into<String>, label: impl Into<String>, properties: HashMap<String, Value>, ) -> Self

Construct a new entity with the given properties.

pub fn with_property(self, key: impl Into<String>, value: Value) -> Self

Add a single key-value property, consuming and returning self.

Allows fluent builder-style construction:

let e = Entity::new("alice", "Person")
    .with_property("age", 30.into())
    .with_property("role", "engineer".into());

pub fn has_property(&self, key: &str) -> bool

Return true if the entity has a property with the given key.

pub fn property_value(&self, key: &str) -> Option<&Value>

Return a reference to the property value for key, or None if absent.

Trait Implementations

impl Clone for Entity

fn clone(&self) -> Entity

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Entity

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Entity

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Entity

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

where __S: Serializer,

Serialize this value into the given Serde serializer.