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¶
Overview ¶
Package store provides SQLite-backed storage primitives for Stroma indexes.
Index ¶
- Constants
- func CheckSQLiteReady() error
- func CheckSQLiteReadyContext(ctx context.Context) error
- func CosineScoreFromDistance(distance float64) float64
- func DecodeVectorBlob(blob []byte) ([]float64, error)
- func DecodeVectorBlobInt8(blob []byte) ([]float64, error)
- func EncodeVectorBlob(vector []float64) ([]byte, error)
- func EncodeVectorBlobInt8(vector []float64) ([]byte, error)
- func IsMissingIndex(err error) bool
- func MissingIndexPath(err error) string
- func OpenReadOnly(path string) (*sql.DB, error)
- func OpenReadOnlyContext(ctx context.Context, path string) (*sql.DB, error)
- func OpenReadWrite(path string) (*sql.DB, error)
- func OpenReadWriteContext(ctx context.Context, path string) (*sql.DB, error)
- type MissingIndexError
Constants ¶
const ( // QuantizationFloat32 is the default float32 vector quantization. QuantizationFloat32 = "float32" // QuantizationInt8 uses signed 8-bit scalar quantization. QuantizationInt8 = "int8" )
Variables ¶
This section is empty.
Functions ¶
func CheckSQLiteReady ¶
func CheckSQLiteReady() error
CheckSQLiteReady validates that the SQLite driver and sqlite-vec extension are usable.
func CheckSQLiteReadyContext ¶
CheckSQLiteReadyContext validates that the SQLite driver and sqlite-vec extension are usable.
func CosineScoreFromDistance ¶
CosineScoreFromDistance converts sqlite-vec cosine distance into a clamped score.
func DecodeVectorBlob ¶
DecodeVectorBlob decodes a sqlite-vec float32 blob into float64 values.
func DecodeVectorBlobInt8 ¶ added in v0.2.0
DecodeVectorBlobInt8 decodes a sqlite-vec int8 vector blob back to float64.
func EncodeVectorBlob ¶
EncodeVectorBlob encodes float64 embeddings into the sqlite-vec blob format.
func EncodeVectorBlobInt8 ¶ added in v0.2.0
EncodeVectorBlobInt8 L2-normalizes the input vector and then quantizes it to signed 8-bit integers for sqlite-vec int8 vector columns. Normalizing before quantization ensures any embedder output is mapped into [-1, 1] without silent clamping or hidden preconditions.
func IsMissingIndex ¶
IsMissingIndex reports whether err wraps a missing-index failure.
func MissingIndexPath ¶
MissingIndexPath returns the configured path for a missing-index failure.
func OpenReadOnly ¶
OpenReadOnly opens a fresh read-only SQLite handle.
func OpenReadOnlyContext ¶
OpenReadOnlyContext opens a fresh read-only SQLite handle.
func OpenReadWrite ¶
OpenReadWrite opens a read-write SQLite handle.
Types ¶
type MissingIndexError ¶
type MissingIndexError struct {
Path string
}
MissingIndexError reports that the requested index file does not exist yet.
func (*MissingIndexError) Error ¶
func (e *MissingIndexError) Error() string
Source Files