Struct JsonLdHeader 

pub struct JsonLdHeader {
    pub context: Option<JsonLdContext>,
    pub id: Option<String>,
    pub type_: Option<TypeOrVec>,
}

Represents the JSON-LD document header, containing context, id, and type definitions. This structure is used as the envelope for JSON-LD documents and nodes.

The fields correspond to the standard JSON-LD keywords:

• @context: Describes the term definitions and mapping information; can be an IRI, an object, or an array of contexts.
• @id: The node identifier, usually as an IRI string.
• @type: The semantic type(s) of the node as a string or array of strings.

Fields

context: Option<JsonLdContext>

id: Option<String>

type_: Option<TypeOrVec>

Implementations

impl JsonLdHeader

pub fn add_term(&mut self, name: &str, term: TermDef)

Add a new term definition to the context, creating the context object if not present.

Arguments

• name - The key/term to be added to the @context
• term - The associated mapping (simple IRI, detailed mapping, or null)

pub fn update_term(&mut self, name: &str, term: TermDef)

Insert or replace a term definition in the context.

pub fn remove_term(&mut self, name: &str) -> bool

Remove a term from the context. Returns true if the term existed and was removed.

pub fn add_import(&mut self, import_url: impl Into<String>)

Add an @import field as required by JSON-LD 1.1. If @import already exists, merges multiple contexts into an array.

Arguments

• import_url - The URL (IRI) to include with @import.

Trait Implementations

impl Clone for JsonLdHeader

fn clone(&self) -> JsonLdHeader

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for JsonLdHeader

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

Formats the value using the given formatter.

impl Default for JsonLdHeader

fn default() -> JsonLdHeader

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for JsonLdHeader

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for JsonLdHeader

fn eq(&self, other: &JsonLdHeader) -> 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 JsonLdHeader

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 JsonLdHeader

impl StructuralPartialEq for JsonLdHeader