Struct IdentifierIssuer 

pub struct IdentifierIssuer { /* private fields */ }

Issues monotonically increasing canonical blank node identifiers.

Each call to IdentifierIssuer::issue either returns the previously assigned identifier for a blank node or mints a fresh one with the format _:c14n<N>. The internal counter starts at 0.

Implementations

impl IdentifierIssuer

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

Create a new issuer using prefix as the canonical identifier prefix.

pub fn issue(&mut self, original: &str) -> String

Return the canonical identifier that has been (or will be) assigned to original. If this is the first call for original, a new identifier is minted.

pub fn get(&self, original: &str) -> Option<&str>

Return the canonical identifier for original if it has already been issued, without minting a new one.

pub fn has_issued(&self, original: &str) -> bool

Return true if a canonical identifier has already been issued for original.

pub fn issued_pairs(&self) -> impl Iterator<Item = (&str, &str)>

Return an iterator over (original, canonical) pairs in issue order.

pub fn as_map(&self) -> &HashMap<String, String>

Return the mapping as a HashMap<String, String> for N-Quads serialization.

Trait Implementations

impl Clone for IdentifierIssuer

fn clone(&self) -> IdentifierIssuer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IdentifierIssuer

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

Formats the value using the given formatter.