query.private.Predicate

struct query.private.Predicate

structoverload [source] ¶

structoverload [source] ¶

struct query.private.Predicate

One opaque predicate passed to generated candidate dispatch.

Downstream code can inspect only the stable field name and call the typed matching or validation helpers.

The crate::query::Filterable example executes every scalar helper through a hand-written generated-code expansion.

Members

• field method Return the stable field name used by generated dispatch.
• matches_bool method Match a boolean candidate with this boolean predicate.
• matches_enum method Match a custom enum candidate's stable filter string.
• matches_many method Match this relation predicate against already-loaded related values.
• matches_one method Match this relation predicate against one already-loaded value.
• matches_signed method Match a signed candidate widened without loss to i128.
• matches_text method Match a strict UTF-8 candidate with this text predicate.
• matches_unsigned method Match an unsigned candidate widened without loss to u128.
• validate_bool method Validate that this predicate is a well-formed boolean predicate.
• validate_enum method Validate this predicate against a custom enum's stable variants.
• validate_integer method Validate this predicate for one fixed-width integer kind.
• validate_many method Validate this predicate as a to-many relation over U.
• validate_one method Validate this predicate as a to-one relation over U.
• validate_text method Validate that this predicate is a well-formed text predicate.