Struct GraphConfig 

pub struct GraphConfig {
    pub default_node_id_field: String,
    pub default_relationship_type_field: String,
    /* private fields */
}

Configuration for mapping Lance datasets to property graphs

Node labels and relationship types are case-insensitive: the mappings are keyed by their lowercase form. Build a config with GraphConfigBuilder, which normalizes keys, and read it through the lookup and iterator accessors. Deserialization goes through the builder too, so a deserialized config is validated like a built one.

Fields

default_node_id_field: String

Default node ID field if not specified in mappings

default_relationship_type_field: String

Default relationship type field if not specified in mappings

Implementations

impl GraphConfig

pub fn builder() -> GraphConfigBuilder

Create a new builder for GraphConfig

pub fn get_node_mapping(&self, label: &str) -> Option<&NodeMapping>

Get node mapping for a given label (case-insensitive)

Looks up the node mapping using case-insensitive comparison. For example, “Person”, “PERSON”, and “person” all refer to the same label.

pub fn get_relationship_mapping( &self, rel_type: &str, ) -> Option<&RelationshipMapping>

Get relationship mapping for a given type (case-insensitive)

Looks up the relationship mapping using case-insensitive comparison. For example, “FOLLOWS”, “follows”, and “Follows” all refer to the same type.

pub fn iter_node_mappings( &self, ) -> impl ExactSizeIterator<Item = (&String, &NodeMapping)>

Iterate over normalized node labels and their mappings without allowing mutation.

pub fn iter_relationship_mappings( &self, ) -> impl ExactSizeIterator<Item = (&String, &RelationshipMapping)>

Iterate over normalized relationship types and their mappings without allowing mutation.

pub fn validate(&self) -> Result<()>

Validate the configuration

Checks for:

• Empty ID fields
• Non-normalized keys (must be lowercase)
• Case-insensitive duplicates

Trait Implementations

impl Clone for GraphConfig

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GraphConfig

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

Formats the value using the given formatter.

impl Default for GraphConfig

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for GraphConfig

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for GraphConfig

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<GraphConfigBuilder> for GraphConfig

type Error = GraphError

The type returned in the event of a conversion error.

fn try_from(builder: GraphConfigBuilder) -> Result<Self>

Performs the conversion.