Crate lora_store 

Storage layer: graph value types, the trait surface every backend implements, and the in-memory reference backend.

Public surface is laid out here so the full export of the crate is readable in one place.

Re-exports

pub use types::bbox_contains;

pub use types::bbox_x_ranges;

pub use types::cartesian_distance;

pub use types::cosine_similarity_bounded;

pub use types::cosine_similarity_raw;

pub use types::days_in_month;

pub use types::dot_product;

pub use types::euclidean_distance;

pub use types::euclidean_distance_squared;

pub use types::euclidean_norm;

pub use types::euclidean_similarity;

pub use types::hamming_distance;

pub use types::haversine_distance;

pub use types::is_leap_year;

pub use types::manhattan_distance;

pub use types::manhattan_norm;

pub use types::parse_string_values;

pub use types::point_distance;

pub use types::resolve_srid;

pub use types::resolve_srid_checked;

pub use types::srid_from_crs_name;

pub use types::srid_is_3d;

pub use types::srid_is_geographic;

pub use types::srid_is_supported;

pub use types::ExpandedRelationship;

pub use types::Labels;

pub use types::LocalOffset;

pub use types::LoraBinary;

pub use types::LoraDate;

pub use types::LoraDateTime;

pub use types::LoraDuration;

pub use types::LoraLocalDateTime;

pub use types::LoraLocalTime;

pub use types::LoraPoint;

pub use types::LoraTime;

pub use types::LoraVector;

pub use types::Name;

pub use types::NamedPointCoordinates;

pub use types::NodeId;

pub use types::NodeRecord;

pub use types::ParseVectorCoordinateTypeError;

pub use types::PointKeyFamily;

pub use types::Properties;

pub use types::PropertyMap;

pub use types::PropertyValue;

pub use types::RawCoordinate;

pub use types::RelationshipId;

pub use types::RelationshipRecord;

pub use types::SridResolveError;

pub use types::VectorBuildError;

pub use types::VectorCoordinateType;

pub use types::VectorValues;

pub use types::ZoneId;

pub use types::CRS_CARTESIAN;

pub use types::CRS_CARTESIAN_3D;

pub use types::CRS_WGS84_2D;

pub use types::CRS_WGS84_3D;

pub use types::MAX_VECTOR_DIMENSION;

pub use types::SRID_CARTESIAN;

pub use types::SRID_CARTESIAN_3D;

pub use types::SRID_WGS84;

pub use types::SRID_WGS84_3D;

pub use types::LabelsRef;

pub use types::NodeRef;

pub use types::OtherValue;

pub use types::PropsIter;

pub use types::PropsRef;

pub use types::RelRef;

pub use types::ValueRef;

pub use intern::intern;

pub use intern::intern_owned;

Modules

codec

Dependency-free binary codecs for store-owned values that must cross crate boundaries.

intern

Process-wide property-key intern table.

types

Storage-layer value types — the vocabulary every backend speaks.

Structs

ClosureRecorder

Convenience adapter that turns any Fn(MutationEvent) + Send + Sync into a MutationRecorder — useful in tests and for quick wiring.

ConstraintCatalog

ConstraintDefinition

ConstraintRequest

GraphStats

Snapshot of graph cardinality. Populated by the storage backend (see [super::InMemoryGraph::stats]).

InMemoryGraph

IndexCatalog

IndexDefinition

IndexRequest

What a caller asks the catalog to create. The explicit_name is None when the user did not name the index at the call site — the catalog will mint a deterministic one.

ListElementStats

List elements in one RANGE index scope (see GraphStats::node_list_elements).

MemoryReport

Aggregated retained-heap breakdown of an [InMemoryGraph].

NodeBatch

Nodes encoded off the builder’s thread, for SnapshotGraphBuilder::push_nodes. Fill with SnapshotEncoder::push_node.

PlanSignature

Builds a GraphStats::plan_signature: a hash of every input the planner reads from the stats, with cardinalities coarsened to power-of-two buckets. Backends feed it the same items GraphStats holds, in a deterministic order, without building the maps.

PropertyIndexKeyUsage

One active hash property index key in a MemoryReport.

RelationshipBatch

Relationships encoded off the builder’s thread, for SnapshotGraphBuilder::push_relationships.

SnapshotCatalogs

The parts of a snapshot that are not records: the id counters and the declared catalogs. Small next to the graph.

SnapshotEncoder

Encodes snapshot records into a graph’s stored form on any thread, for the SnapshotGraphBuilder that primed it. Cheap to clone.

SnapshotGraphBuilder

Builds an InMemoryGraph from snapshot records one at a time.

SnapshotMeta

Metadata reported by snapshot encode / decode entry points. Kept small and stable so callers can log / diff it without reflecting on the payload.

SnapshotNames

The dictionaries a graph numbers its records with, in number order. A snapshot writer names records by these numbers, and a SnapshotGraphBuilder primed with them (SnapshotGraphBuilder::prime) encodes records on any thread.

SnapshotNode

A stored node as a snapshot writer reads it: names by number in SnapshotNames, values borrowed.

SnapshotPayload

Portable representation of an entire store state.

SnapshotRelationship

A stored relationship as a snapshot writer reads it.

StoredPropertyType

Stored representation of a property-type constraint’s target type. Mirrors the AST PropertyTypeExpr but lives in the store layer so the catalog has no AST dependency.

ValueDictionary

A graph’s value dictionary as a snapshot carries it, so a restarted graph stores the values it numbered by number again. Only a hint: a graph without it reads every value the same, and stores more bytes.

VectorIndexSnapshot

Snapshot of one vector index, carried through the snapshot pipeline. Only HNSW backends are persisted today (see [VectorIndexRegistry::to_snapshots]); the enum is open for a future Flat arm if pre-built flat backends become expensive to rebuild for some workload.

Enums

ConstraintBacking

What a uniqueness or key constraint’s backing index keeps.

ConstraintViolation

Why a mutation was rejected by a constraint check. The codes match the GQLSTATUS-style shapes:

CreateConstraintError

CreateConstraintOutcome

CreateIndexError

CreateIndexOutcome

DropConstraintError

DropConstraintOutcome

DropIndexError

DropIndexOutcome

IndexConfigValue

MutationEvent

A durable, replayable mutation against a graph store.

SnapshotError

Errors a backend may surface while building or restoring a snapshot payload. Codec-level errors live in [lora-snapshot]; these are the store-side payload-shaped failures.

StoredConstraintKind

StoredIndexEntity

StoredIndexKind

StoredIndexState

StoredPropertyTypeTerm

StoredScalarType

StoredVectorCoordType

ValueKeyState

How a key’s short string values are stored, once judged.

VectorBackendSnapshot

Traits

DeletedRecordSink

Observer for records a delete is about to drop.

GraphCatalog

GraphStorage

GraphStorageMut

MutationRecorder

Observer that receives every successful mutation in the order the store applied it.

Functions

property_value_heap_bytes

Bytes beyond the embedded discriminant of a PropertyValue. The embedded discriminant itself is counted by the caller (it sits inside whatever container owns the value).

Type Aliases

DistinctValues

(label or relationship type, property key) → estimated distinct values.