Struct NamespaceMapper 

pub struct NamespaceMapper { /* private fields */ }

Bidirectional registry of namespace prefixes and their IRIs.

Implementations

impl NamespaceMapper

pub fn new() -> Self

Create an empty mapper.

pub fn with_defaults() -> Self

Create a mapper pre-loaded with the most common RDF standard prefixes.

pub fn add( &mut self, prefix: impl Into<String>, namespace: impl Into<String>, ) -> Result<(), NamespaceError>

Register a prefix mapping.

Returns Err(DuplicatePrefix) if the prefix is already registered. Returns Err(InvalidPrefix) if the prefix string is empty or contains : (only the bare name should be supplied; the trailing : is added automatically during serialization). Returns Err(InvalidNamespace) if the namespace is empty.

pub fn remove(&mut self, prefix: &str) -> bool

Remove a prefix mapping. Returns true if the mapping existed.

pub fn get_namespace(&self, prefix: &str) -> Option<&str>

Look up the namespace for a given prefix.

pub fn get_prefix(&self, namespace: &str) -> Option<&str>

Reverse-lookup: find a prefix for a given namespace IRI.

pub fn len(&self) -> usize

Number of registered mappings.

pub fn is_empty(&self) -> bool

Return true when no mappings are registered.

pub fn prefix_names(&self) -> Vec<&str>

Return all registered prefix names.

pub fn all_mappings(&self) -> Vec<(&str, &str)>

Return all (prefix, namespace) pairs.

pub fn abbreviate(&self, iri: &str) -> Option<String>

Try to abbreviate a full IRI to a CURIE (prefix:local).

Iterates all registered namespaces and returns the first match, choosing the longest matching namespace for determinism.

pub fn expand(&self, curie: &str) -> Option<String>

Expand a CURIE (prefix:local) to a full IRI.

Returns None if the prefix is not registered.

pub fn to_turtle_declarations(&self) -> String

Produce Turtle @prefix declarations for all registered mappings.

pub fn to_sparql_declarations(&self) -> String

Produce SPARQL PREFIX declarations for all registered mappings.

pub fn merge(&mut self, other: &NamespaceMapper)

Merge all mappings from other into this mapper.

Silently skips any prefix that is already registered (no error).

Trait Implementations

impl Clone for NamespaceMapper

fn clone(&self) -> NamespaceMapper

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NamespaceMapper

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

Formats the value using the given formatter.

impl Default for NamespaceMapper

fn default() -> NamespaceMapper

Returns the “default value” for a type.