Enum ScalarType 

pub enum ScalarType {
    Int,
    BigInt,
    Float,
    Decimal,
    String,
    Boolean,
    DateTime,
    Date,
    Time,
    Json,
    Bytes,
    Uuid,
    Cuid,
    Cuid2,
    NanoId,
    Ulid,
    Vector(Option<u32>),
    HalfVector(Option<u32>),
    SparseVector(Option<u32>),
    Bit(Option<u32>),
}

Scalar types supported by Prax.

Variants

Int

Integer type (maps to INT/INTEGER).

BigInt

Big integer type (maps to BIGINT).

Float

Floating point type (maps to FLOAT/REAL).

Decimal

Decimal type for precise calculations (maps to DECIMAL/NUMERIC).

String

String type (maps to VARCHAR/TEXT).

Boolean

Boolean type.

DateTime

Date and time type.

Date

Date only type.

Time

Time only type.

Json

JSON type.

Bytes

Binary/Bytes type.

Uuid

UUID type (128-bit universally unique identifier).

Cuid

CUID type (collision-resistant unique identifier).

Cuid2

CUID2 type (next generation collision-resistant unique identifier).

NanoId

NanoID type (URL-friendly unique identifier).

Ulid

ULID type (Universally Unique Lexicographically Sortable Identifier).

Vector(Option<u32>)

Vector type for AI/ML embeddings (requires vector extension). Stores dense vectors of float4 values. Usage: embedding Vector(1536) for OpenAI embeddings.

HalfVector(Option<u32>)

Half-precision vector type (requires vector extension). Stores dense vectors of float2 values, using half the storage of Vector. Usage: embedding HalfVector(1536) for memory-efficient embeddings.

SparseVector(Option<u32>)

Sparse vector type (requires vector extension). Stores sparse vectors with explicit indices and values. Usage: features SparseVector(10000) for high-dimensional sparse data.

Bit(Option<u32>)

Bit vector type (requires vector extension). Stores binary vectors for binary quantization. Usage: hash Bit(256) for binary hash storage.

Implementations

impl ScalarType

pub fn from_str(s: &str) -> Option<ScalarType>

Parse a scalar type from a string. For parameterized types like Vector(1536), use parse_with_param.

pub fn parse_with_param(name: &str, param: Option<u32>) -> Option<ScalarType>

Parse a scalar type with an optional dimension parameter. Handles types like Vector(1536), HalfVector(768), etc.

pub fn as_str(&self) -> &'static str

Get the type name as a string.

pub fn is_id_type(&self) -> bool

Check if this type is an identifier type (UUID, CUID, etc.).

pub fn requires_vector_extension(&self) -> bool

Check if this type requires the vector PostgreSQL extension.

pub fn dimension(&self) -> Option<u32>

Get the dimension for vector types, if specified.

pub fn postgres_type(&self) -> String

Get the PostgreSQL type name for this scalar type.

Trait Implementations

impl Clone for ScalarType

fn clone(&self) -> ScalarType

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScalarType

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ScalarType

fn deserialize<__D>( __deserializer: __D, ) -> Result<ScalarType, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for ScalarType

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

Formats the value using the given formatter.

impl PartialEq for ScalarType

fn eq(&self, other: &ScalarType) -> 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 Serialize for ScalarType

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for ScalarType

impl StructuralPartialEq for ScalarType