Struct Identifier 

pub struct Identifier {
    pub property_id: String,
    pub value: String,
}

External identifier for a thing, modelled on schema.org/PropertyValue.

Two Identifier values are equal iff both their property_id and their value are equal. Equality is structural — no per-scheme canonicalisation is performed.

property_id is the issuer or vocabulary that names the identifier, such as "wikidata", "isbn", "doi", "gtin", or a fully-qualified URL. value is the identifier string itself.

Example

use thing_matcher::Identifier;

let a = Identifier::new("wikidata", "Q243").unwrap();
let b = Identifier::new("wikidata", " Q243 ").unwrap();
assert_eq!(a, b, "values are trimmed at construction");
assert!(Identifier::new("wikidata", "").is_none());

Fields

property_id: String

Issuer or vocabulary that scopes the identifier, e.g. "wikidata", "isbn", "doi", "gtin", or a URL.

value: String

The identifier value, trimmed of surrounding whitespace.

Implementations

impl Identifier

pub fn new( property_id: impl Into<String>, value: impl Into<String>, ) -> Option<Self>

Construct an Identifier, trimming the value and property id of surrounding whitespace. Returns None if either trimmed component is empty.

No further normalisation is applied — different vocabularies have different rules and the crate makes no assumptions.

Example

use thing_matcher::Identifier;

let id = Identifier::new("wikidata", "  Q243  ").unwrap();
assert_eq!(id.value, "Q243");
assert_eq!(id.property_id, "wikidata");

assert!(Identifier::new("wikidata", "   ").is_none());
assert!(Identifier::new("   ", "Q243").is_none());

Trait Implementations

impl Clone for Identifier

fn clone(&self) -> Identifier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Identifier

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Identifier

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for Identifier

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Identifier

fn eq(&self, other: &Identifier) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Identifier

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Identifier

impl StructuralPartialEq for Identifier