Enum Condition 

#[non_exhaustive]
pub enum Condition {
    Equal {
        key: String,
        value: Value,
    },
    NotEqual {
        key: String,
        value: Value,
    },
    Less {
        key: String,
        value: Value,
    },
    LessEqual {
        key: String,
        value: Value,
    },
    Greater {
        key: String,
        value: Value,
    },
    GreaterEqual {
        key: String,
        value: Value,
    },
    In {
        key: String,
        values: Vec<Value>,
    },
    NotIn {
        key: String,
        values: Vec<Value>,
    },
    Exists {
        key: String,
    },
    NotExists {
        key: String,
    },
}

A single comparison operator applied to one metadata key.

Equality, range, and membership conditions require a concrete stored value. An absent key or Value::Unset produces an unknown outcome that remains unknown under logical negation and therefore fails closed when matching. Existence conditions define presence in terms of a concrete value.

Examples

use qubit_metadata::Condition;

let condition = Condition::Equal {
    key: "tenant".to_owned(),
    value: "acme".into(),
};
assert!(matches!(condition, Condition::Equal { .. }));

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Equal

Key equals value.

Fields

key: String

The metadata key.

value: Value

The expected value.

NotEqual

Key does not equal value.

Fields

key: String

The metadata key.

value: Value

The value to compare against.

Less

Key is less than value.

Fields

key: String

The metadata key.

value: Value

The upper bound (exclusive).

LessEqual

Key is less than or equal to value.

Fields

key: String

The metadata key.

value: Value

The upper bound (inclusive).

Greater

Key is greater than value.

Fields

key: String

The metadata key.

value: Value

The lower bound (exclusive).

GreaterEqual

Key is greater than or equal to value.

Fields

key: String

The metadata key.

value: Value

The lower bound (inclusive).

In

The stored value is one of the listed candidates.

Fields

key: String

The metadata key.

values: Vec<Value>

The set of acceptable values.

NotIn

The stored value is not any of the listed candidates.

Fields

key: String

The metadata key.

values: Vec<Value>

The set of excluded values.

Exists

The key stores a concrete value.

An absent key or a key storing Value::Unset does not exist for filter matching.

Fields

key: String

The metadata key.

NotExists

The key does not store a concrete value.

An absent key or a key storing Value::Unset satisfies this condition.

Fields

key: String

The metadata key.

Trait Implementations

impl Clone for Condition

fn clone(&self) -> Condition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Condition

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

Writes the strict-policy diagnostic representation.

impl PartialEq for Condition

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

Equality operator ==.

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

Inequality operator !=.

impl Redact for Condition

fn write_redacted(&self, writer: &mut RedactionWriter<'_>)

Writes a diagnostic condition representation under the active policy.

The condition node is entered before its discriminant is inspected. The synthetic operator label is derived from that discriminant and does not consume a field node. The source key and optional operand fields are admitted in source order. Accessors are invoked only after admission; operand access is skipped for opaque masking but remains available to a disabled policy that intentionally restores source values. A node-budget rejection adds one structural truncation field and terminates the branch without touching the rejected field.

Parameters

• writer - Structured destination carrying the active policy and cumulative domain budgets.

impl StructuralPartialEq for Condition