Struct MetadataFilterBuilder 

pub struct MetadataFilterBuilder { /* private fields */ }

Builder for the non-logical configuration of a MetadataFilter.

The expression is mandatory. Repeated property calls are intentional and use last-write-wins semantics.

Examples

use qubit_metadata::{FilterExpression, Metadata, MetadataFilter};

let expression = FilterExpression::builder().eq("tenant", "acme").build()?;
let filter = MetadataFilter::builder().expression(expression).build()?;
let metadata = Metadata::new().with("tenant", "acme");
assert!(filter.matches(&metadata));

Implementations

impl MetadataFilterBuilder

pub fn expression(self, expression: FilterExpression) -> Self

Sets the required root expression.

Parameters

• expression - Filter expression stored by the filter.

pub fn options(self, options: FilterMatchOptions) -> Self

Sets the match options.

Parameters

• options - Options used when matching.

pub fn limits(self, limits: FilterLimits) -> Self

Sets the resource limits.

Parameters

• limits - Resource limits applied by this operation.

pub fn build(self) -> MetadataResult<MetadataFilter>

Builds a filter after validating its expression against its limits.

Errors

Returns MetadataError::MissingFilterExpression if no expression was supplied, or MetadataError::FilterLimitExceeded if it exceeds the configured limits.

Returns

A filter containing the validated expression, match options, and limits.

pub fn build_checked( self, schema: &MetadataSchema, ) -> MetadataValidationResult<MetadataFilter>

Builds and validates a filter against schema.

Parameters

• schema - Schema against which the filter expression is validated.

Errors

Returns construction errors or aggregate schema-validation errors.

Returns

The filter after successful expression and schema validation.

Trait Implementations

impl Clone for MetadataFilterBuilder

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MetadataFilterBuilder

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

Formats the value using the given formatter.

impl Default for MetadataFilterBuilder

fn default() -> Self

Returns a builder with default options and library hard limits.

impl PartialEq for MetadataFilterBuilder

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for MetadataFilterBuilder