Struct ParsedIndexAttribute 

pub struct ParsedIndexAttribute {
    pub fields: Vec<String>,
    pub using: Option<String>,
    pub opclass: Option<String>,
    pub where_predicate: Option<String>,
}

The parsed shape of an @@index([...], using: ..., opclass: "...", where: "...") attribute.

using/opclass/where are carried through verbatim — not validated against a closed list of Postgres access methods/operator classes/predicate grammar. Per docs/design/extensions.md §2/§6, the framework deliberately avoids hardcoding pgvector’s own index types as the only supported similarity-search backend, so any syntactically valid identifier (or, for where, any quoted text) is accepted here and left for Postgres itself to accept or reject at CREATE INDEX time.

Fields

fields: Vec<String>

Local field names, in declaration order — the index’s column order.

using: Option<String>

using: <method> — e.g. ivfflat, hnsw, gin. None means no access method was named, which renders as a plain CREATE INDEX with Postgres’s own default (btree) left implicit.

opclass: Option<String>

opclass: "<name>" — applied to every column listed in fields. None leaves each column’s default operator class in place.

where_predicate: Option<String>

where: "<sql predicate>" (cratestack#742) — a partial-index condition, carried verbatim into a trailing WHERE <predicate> on the emitted CREATE INDEX. None means the index covers every row, which renders byte-identical DDL to before this field existed.

Trait Implementations

impl Clone for ParsedIndexAttribute

fn clone(&self) -> ParsedIndexAttribute

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ParsedIndexAttribute

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

Formats the value using the given formatter.

impl Eq for ParsedIndexAttribute

impl PartialEq for ParsedIndexAttribute

fn eq(&self, other: &ParsedIndexAttribute) -> 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 StructuralPartialEq for ParsedIndexAttribute