Crate oxgraph_property 

Arrow-backed named property layers for OxGraph topology views.

oxgraph-property is a higher layer than topology. It stores named typed Arrow arrays keyed by topology ID family and adapts selected total primitive layers into topology weight capabilities. Foundation crates do not depend on this crate, Arrow, or named properties.

Module layout

The crate is split into focused modules and re-exports its full public API from this facade:

Module	Responsibility
width	Index/metadata width contracts, axis markers, section-kind constants
model	Layer data model, error type, identity records
weights	Dense/sparse topology weight adapters and layer partitions
rekey	Descriptor uniqueness checks and canonical-to-local rekeying
snapshot	Snapshot encode/validate/decode and wire records

Snapshot section kinds

Constant family	Description
PROPERTY_DESCRIPTORS_*	Per-layer descriptor records (header + records + string table)
PROPERTY_DATA_*	Concatenated Arrow IPC value and sparse-default streams

The _U16 / _U32 / _U64 suffix selects the descriptor metadata word width. The payload format is owned by this crate and remains an OxGraph-internal ABI candidate while snapshot v1 bytes are not stable. All section-kind constants are perf: unspecified — compile-time u32 tags.

Re-exports

pub use model::IdFamily;

pub use model::IdentityMapMode;

pub use model::IdentityModeRecord;

pub use model::IdentityModeSummary;

pub use model::IdentitySnapshotSummary;

pub use model::LayerId;

pub use model::LayerName;

pub use model::LayerRole;

pub use model::MissingPolicy;

pub use model::PropertyError;

pub use model::PropertyLayer;

pub use model::PropertyLayerData;

pub use model::PropertyLayerDescriptor;

pub use model::StorageMode;

pub use rekey::rekey_layer_to_local;

pub use rekey::validate_unique_layer_ids;

pub use rekey::validate_unique_names;

pub use snapshot::DecodedPropertyData;

pub use snapshot::DecodedPropertyLayer;

pub use snapshot::EncodedPropertySnapshot;

pub use snapshot::PropertySnapshotRecord;

pub use snapshot::PropertySnapshotSummary;

pub use snapshot::encode_graph_property_snapshot;

pub use snapshot::encode_hyper_property_snapshot;

pub use snapshot::encode_property_snapshot;

pub use snapshot::validate_identity_snapshot;

pub use snapshot::validate_property_sections;

pub use snapshot::validate_property_snapshot;

pub use weights::DenseWeights;

pub use weights::GraphPropertyLayers;

pub use weights::HyperPropertyLayers;

pub use weights::SparseWeights;

pub use width::AxisIndex;

pub use width::ElementAxis;

pub use width::IncidenceAxis;

pub use width::PropertyAxis;

pub use width::PropertyIndex;

pub use width::PropertySnapshotMetaWord;

pub use width::RelationAxis;

pub use width::SNAPSHOT_KIND_ELEMENT_IDENTITY_MAP_U16;

pub use width::SNAPSHOT_KIND_ELEMENT_IDENTITY_MAP_U32;

pub use width::SNAPSHOT_KIND_ELEMENT_IDENTITY_MAP_U64;

pub use width::SNAPSHOT_KIND_IDENTITY_MODES_U16;

pub use width::SNAPSHOT_KIND_IDENTITY_MODES_U32;

pub use width::SNAPSHOT_KIND_IDENTITY_MODES_U64;

pub use width::SNAPSHOT_KIND_INCIDENCE_IDENTITY_MAP_U16;

pub use width::SNAPSHOT_KIND_INCIDENCE_IDENTITY_MAP_U32;

pub use width::SNAPSHOT_KIND_INCIDENCE_IDENTITY_MAP_U64;

pub use width::SNAPSHOT_KIND_PROPERTY_DATA_U16;

pub use width::SNAPSHOT_KIND_PROPERTY_DATA_U32;

pub use width::SNAPSHOT_KIND_PROPERTY_DATA_U64;

pub use width::SNAPSHOT_KIND_PROPERTY_DESCRIPTORS_U16;

pub use width::SNAPSHOT_KIND_PROPERTY_DESCRIPTORS_U32;

pub use width::SNAPSHOT_KIND_PROPERTY_DESCRIPTORS_U64;

pub use width::SNAPSHOT_KIND_RELATION_IDENTITY_MAP_U16;

pub use width::SNAPSHOT_KIND_RELATION_IDENTITY_MAP_U32;

pub use width::SNAPSHOT_KIND_RELATION_IDENTITY_MAP_U64;

pub use width::SNAPSHOT_PROPERTY_VERSION;

Modules

model

Core property-layer data model, error type, and shared validation helpers.

rekey

Descriptor-set uniqueness checks and canonical-to-local layer rekeying.

snapshot

Property and identity snapshot encoding, validation, and decoding.

weights

Topology weight adapters over selected primitive property layers.

width

Property index width contracts, per-axis markers, and metadata-word codecs.