Struct BlankNodeManager 

pub struct BlankNodeManager {
    pub mapping: HashMap<String, String>,
    /* private fields */
}

Converts blank-node identifiers (_:…) into stable, unique IRIs.

Fields

mapping: HashMap<String, String>

Maps a blank-node id such as "_:b0" to the minted IRI.

Implementations

impl BlankNodeManager

pub fn new(base_iri: impl Into<String>) -> Self

Create a new manager. Every minted IRI will start with base_iri.

pub fn mint(&mut self, blank_id: &str) -> String

Mint a fresh IRI for blank_id and remember the mapping.

If the same blank_id has already been minted, the existing IRI is returned without incrementing the counter.

pub fn resolve(&mut self, s: &str) -> String

If s is a blank-node identifier return (or create) its minted IRI; otherwise return s unchanged.

pub fn is_blank(s: &str) -> bool

Return true when s starts with the conventional _: prefix.

pub fn mapping_count(&self) -> usize

Total number of unique blank nodes minted so far.

pub fn get_minted(&self, blank_id: &str) -> Option<&str>

Look up a previously minted IRI without mutating state.