Struct RelationshipPattern 

pub struct RelationshipPattern {
    pub variable: Option<String>,
    pub types: Vec<String>,
    pub direction: RelationshipDirection,
    pub properties: HashMap<String, PropertyValue>,
    pub length: Option<LengthRange>,
}

A relationship pattern

Fields

variable: Option<String>

Variable name for the relationship (e.g., ‘r’ in [r:KNOWS])

types: Vec<String>

Relationship types (e.g., [‘KNOWS’, ‘FRIEND_OF’])

direction: RelationshipDirection

Direction of the relationship

properties: HashMap<String, PropertyValue>

Property constraints on the relationship

length: Option<LengthRange>

Length constraints (for variable-length paths)

Implementations

impl RelationshipPattern

pub fn new(direction: RelationshipDirection) -> Self

Create a new relationship pattern

pub fn with_variable<S: Into<String>>(self, variable: S) -> Self

Set the variable name for the relationship

pub fn with_type<S: Into<String>>(self, rel_type: S) -> Self

Add a type to the relationship pattern

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

Add a property constraint to the relationship pattern

Trait Implementations

impl Clone for RelationshipPattern

fn clone(&self) -> RelationshipPattern

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for RelationshipPattern

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for RelationshipPattern

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for RelationshipPattern

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

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for RelationshipPattern