Enum FilterExpressionView 

#[non_exhaustive]
pub enum FilterExpressionView<'a> {
    Condition(&'a Condition),
    And(&'a [FilterExpression]),
    Or(&'a [FilterExpression]),
    Not(&'a FilterExpression),
    True,
    False,
}

A borrowed, read-only view of one FilterExpression node.

This enum preserves the complete Boolean structure without allowing callers to construct or mutate the filter’s private representation.

Examples

use qubit_metadata::{FilterExpression, FilterExpressionView};

let expression = FilterExpression::builder().eq("tenant", "acme").build()?;
assert!(matches!(expression.view(), FilterExpressionView::Condition(_)));

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.

Condition(&'a Condition)

A leaf condition.

Tuple Fields

0: &'a Condition

Borrowed comparison predicate.

And(&'a [FilterExpression])

A logical AND over child expressions.

Tuple Fields

0: &'a [FilterExpression]

Borrowed child expressions.

Or(&'a [FilterExpression])

A logical OR over child expressions.

Tuple Fields

0: &'a [FilterExpression]

Borrowed child expressions.

Not(&'a FilterExpression)

A logical NOT around one expression.

Tuple Fields

0: &'a FilterExpression

Borrowed expression whose outcome is negated.

True

A constant true expression.

False

A constant false expression.

Trait Implementations

impl<'a> Clone for FilterExpressionView<'a>

fn clone(&self) -> FilterExpressionView<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Copy for FilterExpressionView<'a>

impl<'a> Debug for FilterExpressionView<'a>

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

Formats the value using the given formatter.

impl<'a> PartialEq for FilterExpressionView<'a>

fn eq(&self, other: &FilterExpressionView<'a>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<'a> StructuralPartialEq for FilterExpressionView<'a>