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Reference

Struct Reference 

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pub struct Reference {
    pub path: String,
    pub type_info: Option<TypeInfo>,
}
Expand description

A reference to a value at another path.

References are the foundation of HATEOAS in StructFS. Instead of embedding full values or documenting path construction rules, stores return references that clients can follow.

§Examples

use structfs_core_store::Reference;

// Minimal reference
let r = Reference::new("handles/0");

// Reference with type hint
let r = Reference::with_type("handles/0", "handle");

// Reference to an action
let r = Reference::with_type("meta/open", "action");

Fields§

§path: String

The path to the referenced value.

§type_info: Option<TypeInfo>

Optional type information.

Implementations§

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impl Reference

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pub fn new(path: impl Into<String>) -> Self

Create a minimal reference with just a path.

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pub fn with_type(path: impl Into<String>, type_name: impl Into<String>) -> Self

Create a reference with a type name.

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pub fn to_value(&self) -> Value

Convert to a Value::Map representation.

This produces the canonical reference format:

{"path": "handles/0", "type": {"name": "handle"}}
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pub fn from_value(value: &Value) -> Option<Self>

Try to parse a Reference from a Value.

A value is a reference if it’s a map containing a path key whose value is a string.

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pub fn is_reference(value: &Value) -> bool

Check if a Value is a reference.

A value is a reference if it’s a map containing a path key whose value is a string.

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impl Clone for Reference

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fn clone(&self) -> Reference

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Debug for Reference

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

Formats the value using the given formatter. Read more
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impl Eq for Reference

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impl PartialEq for Reference

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for Reference

Auto Trait Implementations§

Blanket Implementations§

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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

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fn into(self) -> U

Calls U::from(self).

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

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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = !

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, !>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.