Struct ProvenanceChain 

pub struct ProvenanceChain { /* private fields */ }

A collection of provenance nodes forming one or more chains.

Implementations

impl ProvenanceChain

pub fn new() -> Self

Create an empty provenance chain.

pub fn add_node( &mut self, claim: &str, evidence: Evidence, producer: &str, parent_id: Option<&str>, ) -> &ProvenanceNode

Add a new provenance node and return a reference to it.

Node IDs are auto-generated using a monotonic counter (prov-1, prov-2, …).

pub fn trace_to_root(&self, node_id: &str) -> Vec<&ProvenanceNode>

Trace from a node back to the root, returning nodes in leaf-to-root order.

pub fn get_depth(&self, node_id: &str) -> usize

Return the depth of a node (root = 0).

pub fn get_roots(&self) -> Vec<&ProvenanceNode>

Return all root nodes (nodes with no parent).

pub fn get_leaves(&self) -> Vec<&ProvenanceNode>

Return all leaf nodes (nodes that are not referenced as a parent by any other node).

pub fn weakest_link(&self, node_id: &str) -> EvidenceClass

Return the weakest EvidenceClass along the chain from a node to root.

pub fn chain_confidence(&self, node_id: &str) -> f64

Compute the product of confidence values along the chain from a node to root.

Returns 0.0 if the node is not found.

Trait Implementations

impl Clone for ProvenanceChain

fn clone(&self) -> ProvenanceChain

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ProvenanceChain

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

Formats the value using the given formatter.

impl Default for ProvenanceChain

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for ProvenanceChain

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ProvenanceChain

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

where __S: Serializer,

Serialize this value into the given Serde serializer.