Struct FieldKey 

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

Field key matching pattern [a-z_]+.

Implementations

impl FieldKey

pub fn new(value: impl Into<String>) -> Result<Self, AadError>

Creates a new FieldKey.

Errors

• EmptyFieldKey if empty
• InvalidFieldKey if contains characters outside [a-z_]

pub fn as_str(&self) -> &str

Returns the validated key. Guaranteed non-empty, [a-z_] only.

pub fn is_reserved(&self) -> bool

True if the key matches any reserved field name (v, tenant, resource, purpose, ts).

pub fn validate_as_extension(&self) -> Result<(), AadError>

Validates that this key is a valid extension key (x_<app>_<field>).

Pattern: ^x_[a-z]+_[a-z_]+$

• must start with x_
• app segment: one or more lowercase letters
• field segment: one or more lowercase letters or underscores

Errors

Returns InvalidExtensionKeyFormat if the key doesn’t match the pattern.

Trait Implementations

impl Clone for FieldKey

fn clone(&self) -> FieldKey

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FieldKey

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for FieldKey

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

where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for FieldKey

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

Formats the value using the given formatter.

impl Hash for FieldKey

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 FieldKey

fn cmp(&self, other: &FieldKey) -> 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 FieldKey

fn eq(&self, other: &FieldKey) -> 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 PartialOrd for FieldKey

fn partial_cmp(&self, other: &FieldKey) -> 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 FieldKey

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

where S: Serializer,

Serialize this value into the given Serde serializer.

impl TryFrom<&str> for FieldKey

type Error = AadError

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 FieldKey

type Error = AadError

The type returned in the event of a conversion error.

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

Performs the conversion.

impl Eq for FieldKey

impl StructuralPartialEq for FieldKey