Struct Node 

pub struct Node {
    pub id: NodeId,
    pub version: u64,
    pub labels: HashSet<Label>,
    pub properties: HashMap<String, PropertyValue>,
    pub created_at: i64,
    pub updated_at: i64,
}

A node in the property graph

Nodes can have:

• A unique ID
• Multiple labels (REQ-GRAPH-006)
• Properties (key-value pairs)
• Creation and update timestamps

Fields

id: NodeId

Unique identifier for this node

version: u64

Version for MVCC

labels: HashSet<Label>

Set of labels for this node (supports multiple labels)

properties: HashMap<String, PropertyValue>

Properties associated with this node

created_at: i64

Creation timestamp (Unix milliseconds)

updated_at: i64

Last update timestamp (Unix milliseconds)

Implementations

impl Node

pub fn new(id: NodeId, label: impl Into<Label>) -> Node

Create a new node with a single label

pub fn new_with_labels(id: NodeId, labels: Vec<Label>) -> Node

Create a new node with multiple labels (REQ-GRAPH-006)

pub fn new_with_properties( id: NodeId, labels: Vec<Label>, properties: HashMap<String, PropertyValue>, ) -> Node

Create a new node with labels and properties

pub fn add_label(&mut self, label: impl Into<Label>)

Add a label to this node

pub fn remove_label(&mut self, label: &Label) -> bool

Remove a label from this node

pub fn has_label(&self, label: &Label) -> bool

Check if node has a specific label

pub fn get_labels(&self) -> Vec<&Label>

Get all labels

pub fn set_property( &mut self, key: impl Into<String>, value: impl Into<PropertyValue>, ) -> Option<PropertyValue>

Set a property value

pub fn get_property(&self, key: &str) -> Option<&PropertyValue>

Get a property value

pub fn remove_property(&mut self, key: &str) -> Option<PropertyValue>

Remove a property

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

Check if property exists

pub fn property_count(&self) -> usize

Get number of properties

pub fn label_count(&self) -> usize

Get number of labels

Trait Implementations

impl Clone for Node

fn clone(&self) -> Node

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Node

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Node

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Node

fn hash<H>(&self, state: &mut H)

where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Node

fn eq(&self, other: &Node) -> 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 Node

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 Eq for Node