Struct AttributeKey 

pub struct AttributeKey(/* private fields */);

Validated name of one inode attribute.

A key is 1 to 128 UTF-8 bytes and carries no Unicode control character, which is also what rejects NUL. Keys are compared exactly: nothing case-folds or normalizes them, so two spellings that differ in any byte name two different attributes.

The loonfs. prefix is reserved for system-owned attributes. This type accepts a reserved key, because a durable row has to be able to carry a system attribute. The write operation is where a caller’s attempt to write a reserved key is rejected.

Implementations

impl AttributeKey

pub fn parse( value: impl AsRef<str>, ) -> Result<Self, AttributeKeyValidationError>

Parses and validates the id from its serialized form.

pub fn as_str(&self) -> &str

Returns the serialized id.

impl AttributeKey

pub fn is_reserved(&self) -> bool

Reports whether this key names a system-owned attribute.

Trait Implementations

impl AsRef<str> for AttributeKey

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<str> for AttributeKey

fn borrow(&self) -> &str

Immutably borrows from an owned value.

impl Clone for AttributeKey

fn clone(&self) -> AttributeKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for AttributeKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for AttributeKey

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for AttributeKey

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

Formats the value using the given formatter.

impl Eq for AttributeKey

impl FromStr for AttributeKey

type Err = AttributeKeyValidationError

The associated error which can be returned from parsing.

fn from_str(value: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl Hash for AttributeKey

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 Ord for AttributeKey

fn cmp(&self, other: &AttributeKey) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for AttributeKey

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

Equality operator ==.

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

Inequality operator !=.

impl PartialOrd for AttributeKey

fn partial_cmp(&self, other: &AttributeKey) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for AttributeKey

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>

where S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for AttributeKey

impl TryFrom<&str> for AttributeKey

type Error = AttributeKeyValidationError

The type returned in the event of a conversion error.

fn try_from(value: &str) -> Result<Self, Self::Error>

Performs the conversion.

impl TryFrom<String> for AttributeKey

type Error = AttributeKeyValidationError

The type returned in the event of a conversion error.

fn try_from(value: String) -> Result<Self, Self::Error>

Performs the conversion.