RdfNamespaceMappings class

A class that provides access to RDF namespace mappings with support for custom mappings.

This immutable class provides RDF namespace prefix-to-URI mappings for common RDF vocabularies. It can be extended with custom mappings and supports the spread operator via the asMap method.

To use with the spread operator:

final mappings = {
  ...RdfNamespaceMappings().asMap(),
  'custom': 'http://example.org/custom#'
};

To create custom mappings:

final customMappings = RdfNamespaceMappings.custom({
  'ex': 'http://example.org/',
  'custom': 'http://example.org/custom#'
});

// Access a namespace URI by prefix
final exUri = customMappings['ex']; // http://example.org/

Constructors

RdfNamespaceMappings()

Creates a new RdfNamespaceMappings instance with standard mappings.

const

RdfNamespaceMappings.custom(Map<String, String> customMappings, {dynamic useDefaults = true})

Creates a new RdfNamespaceMappings instance with custom mappings.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

length → int

Returns the number of mappings in this instance.

no setter

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

asMap() → Map<String, String>

Creates an unmodifiable view of the underlying mappings.

containsKey(String prefix) → bool

Checks if the mappings contain a specific prefix.

getOrGeneratePrefix(String namespace, {Map<String, String> customMappings = const {}}) → (String, bool)

Returns the Prefix for a given namespace URI, generating a new one if not found.

getPrefix(String namespace, {Map<String, String> customMappings = const {}}) → String?

Returns the prefix for a given namespace URI.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

operator [](Object? key) → String?

Operator for retrieving a namespace URI by its prefix.

Static Methods

extractNamespaceAndLocalPart(String iri, {bool allowNumericLocalNames = true}) → (String, String)

Extracts the namespace and local part from an IRI

isValidLocalPart(String localPart, {bool allowNumericLocalNames = true}) → bool