Struct MetadataFieldSpec 

pub struct MetadataFieldSpec {
    pub name: String,
    pub field_type: FieldType,
    pub indexed: bool,
}

Metadata field specification.

Defines the schema for a single metadata field that can be attached to vectors. Field names must be unique within a collection.

Indexing

When indexed is true, a MetadataIndex inverted index is maintained for this field, enabling efficient filtering during hybrid queries (e.g., “find similar vectors where category=‘shoes’”).

Non-indexed fields are stored in VectorMeta but cannot be used in filter predicates efficiently—they require scanning all candidate vectors.

Fields

name: String

Field name (must be unique within collection).

field_type: FieldType

Data type for this field’s values.

indexed: bool

Whether this field has a MetadataIndex for filtering.

Implementations

impl MetadataFieldSpec

pub fn new( name: impl Into<String>, field_type: FieldType, indexed: bool, ) -> Self

Trait Implementations

impl Clone for MetadataFieldSpec

fn clone(&self) -> MetadataFieldSpec

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MetadataFieldSpec

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

Formats the value using the given formatter.

impl Decode for MetadataFieldSpec

fn decode(buf: &mut &[u8]) -> Result<Self, EncodingError>

impl Encode for MetadataFieldSpec

fn encode(&self, buf: &mut BytesMut)

impl PartialEq for MetadataFieldSpec

fn eq(&self, other: &MetadataFieldSpec) -> 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 Eq for MetadataFieldSpec

impl StructuralPartialEq for MetadataFieldSpec