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JsonLdExtractor

schemaorg_rs::extraction

Struct JsonLdExtractor

pub struct JsonLdExtractor;

Expand description

Extracts Schema.org structured data from JSON-LD <script> tags.

§Examples

use schemaorg_rs::extraction::{Extractor, JsonLdExtractor};

let html = r#"<html><head>
<script type="application/ld+json">{
"@context": "https://schema.org",
"@type": "Product",
"name": "Widget"
}</script>
</head></html>"#;

let output = JsonLdExtractor.extract(html).unwrap();
assert_eq!(output.nodes[0].types, vec!["Product"]);

Implementations§

impl JsonLdExtractor

pub fn extract_from_document( &self, document: &Html, html: &str, ) -> Result<ExtractionOutput, ExtractionError>

Extracts from an already-parsed document.

The raw html string is needed for source-location computation (finding byte offsets of <script> tags).

§Errors

Returns ExtractionError if a fatal error prevents extraction. JSON parse failures are captured as warnings, not errors.

§Panics

Panics if the internal CSS selector constant fails to parse. This is a compile-time-verified string and will never fail.

Trait Implementations§

impl Extractor for JsonLdExtractor

fn extract(&self, html: &str) -> Result<ExtractionOutput, ExtractionError>

Extracts structured data nodes from an HTML document. Read more

Auto Trait Implementations§

impl Freeze for JsonLdExtractor

impl RefUnwindSafe for JsonLdExtractor

impl Send for JsonLdExtractor

impl Sync for JsonLdExtractor

impl Unpin for JsonLdExtractor

impl UnsafeUnpin for JsonLdExtractor

impl UnwindSafe for JsonLdExtractor

Blanket Implementations§

impl<T> Any for T
where T: 'static + ?Sized,

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

impl<T> Borrow<T> for T
where T: ?Sized,

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

impl<T> BorrowMut<T> for T
where T: ?Sized,

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> From<T> for T

fn from(t: T) -> T

Returns the argument unchanged.

impl<T, U> Into<U> for T
where U: From<T>,

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<T, U> TryFrom<U> for T
where U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

impl<S, T> Upcast<T> for S
where T: UpcastFrom<S> + ?Sized, S: ?Sized,

fn upcast(&self) -> &T
where Self: ErasableGeneric, T: ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider ref type within the Wasm bindgen generics type system. Read more

fn upcast_into(self) -> T
where Self: Sized + ErasableGeneric, T: ErasableGeneric<Repr = Self::Repr>,

Perform a zero-cost type-safe upcast to a wider type within the Wasm bindgen generics type system. Read more