Grok proposed crate: lance-graph-owl-simd lib.rs (invariant layer impl)

Author: AdaWorldAPI

.grok/proposed-crate-lance-graph-owl-simd/lib.rs

@@ -0,0 +1,172 @@
+//! lance-graph-owl-simd — The Invariant Layer
+//!
+//! This crate implements the SIMD-validated invariant layer for the lance-graph stack.
+//! It sits between the storage substrate (Lance, DataFusion, SPO triple store) and the
+//! thinking layer (MUL meta-witness, NARS, Pearl, polyglot planner).
+//!
+//! Its job: enforce schema-level guarantees (OWL property characteristics + DOLCE upper
+//! ontology distinctions) that the thinking layer can take for granted, validated at
+//! memory-bandwidth speeds via AVX-512 / JITSON kernels.
+//!
+//! The layer Bardioc/HIRO does not have and structurally cannot retrofit.
+//! It makes the regulated-industry pitch defensible without footnotes.
+//!
+//! See INVARIANT_LAYER.txt for full architectural framing.
+
+use arrow::record_batch::RecordBatch;
+use std::sync::Arc;
+
+/// The packed binary representation of an OGIT schema enriched with
+/// OWL property characteristics (functional, inverse-functional, transitive, symmetric,
+/// asymmetric, reflexive, irreflexive — 7 bits) and DOLCE upper-category annotations
+/// (endurant vs perdurant — 1 bit).
+///
+/// Layout is designed to be small (~50 KiB for full OGIT: 513 entity types, 856 attrs,
+/// 375 verbs) and L1-cache-resident. Every active validation kernel holds the entire
+/// schema in L1, eliminating memory-traffic costs.
+///
+/// The format uses bitmap-encoded class hierarchies, disjointness pairs, etc.
+/// Schema hash invalidates JITSON kernel cache on change.
+/// Lance append-only commit log preserves historical schema versions for time-travel.
+#[derive(Clone, Debug)]
+pub struct PackedSchema {
+    /// Unique hash of the schema for JIT cache key and invalidation.
+    pub schema_hash: u64,
+    /// Packed bitmaps and tables for fast lookup.
+    /// (In real impl: Vec<u8> or aligned arrays for SIMD loads)
+    pub data: Vec<u8>,
+    /// Number of entity types, properties, etc. for bounds checks.
+    pub num_classes: u32,
+    pub num_properties: u32,
+    // ... other metadata for DOLCE markers, OWL bits per PropertySpec
+}
+
+/// Result of validation. Either OK or detailed violations for diagnostics.
+/// Violations are returned to OntologyRegistry, planner, MUL gate etc.
+#[derive(Clone, Debug)]
+pub enum ValidationResult {
+    /// Batch is structurally valid against the schema invariants.
+    Ok,
+    /// One or more structural violations found.
+    Violations {
+        /// Human and machine readable descriptions.
+        messages: Vec<String>,
+        /// Indices of offending rows in the RecordBatch (for Arrow filtering).
+        row_indices: Vec<usize>,
+        /// Classification of violation (domain, range, cardinality, disjointness, dolce, etc.)
+        kinds: Vec<ViolationKind>,
+    },
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum ViolationKind {
+    /// Property domain or range violation (bitmap intersection failed)
+    DomainRange,
+    /// Cardinality (functional property had >1 value, or required missing)
+    Cardinality,
+    /// Disjoint classes had overlapping instances (bitmap AND + popcount)
+    Disjointness,
+    /// DOLCE category mismatch (endurant operation on perdurant or vice-versa)
+    DolceCategory,
+    /// Subclass / type hierarchy violation
+    Subclass,
+    /// Other schema invariant (e.g. irreflexive self-loop)
+    Other,
+}
+
+/// The main entry point exposed to downstream consumers.
+/// 
+/// Accepts a packed-schema reference (L1-resident) and an Arrow RecordBatch
+/// (from Lance scan, DataFusion, or ingest path).
+///
+/// Returns ValidationResult in nanoseconds for single triple, or memory-bandwidth
+/// for large batches (billions of triples/sec per core on modern AVX-512).
+///
+/// This is the stable boundary. Internal kernel changes do not affect callers.
+pub fn validate(packed: &PackedSchema, batch: &RecordBatch) -> ValidationResult {
+    // In production: 
+    // 1. JITSON lookup or cold-compile kernel specialized to this schema_hash
+    // 2. Dispatch to AVX-512 kernels (VPOPCNTDQ, VNNI, VPTERNLOG, BITALG)
+    //    for the hot loops:
+    //    - subclass tests against bitmap-encoded class hierarchies
+    //    - property-domain checks against bitmap intersection
+    //    - cardinality bounds against vectorized counts
+    //    - disjointness checks against bitmap AND-and-popcount
+    //    - DOLCE-category coherence checks against single-bit comparisons
+    //
+    // The kernels are simple, cache-friendly, and integrated with JITSON's
+    // cold-compile-then-warm-cache discipline (hundreds of µs cold, sub-µs warm).
+    //
+    // For scaffolding we return a stub OK. Real implementation fills in the kernels.
+    if batch.num_rows() == 0 {
+        return ValidationResult::Ok;
+    }
+    // Placeholder: in real code, run the vectorized checks here or via compiled kernel.
+    // If any violation, populate messages, row_indices, kinds.
+    ValidationResult::Ok
+}
+
+/// Helper to hydrate a PackedSchema from OGIT TTL via lance-graph-ontology.
+/// Called by OntologyRegistry on schema commit / evolution path.
+/// The resulting PackedSchema is small, versioned, and cacheable.
+pub fn pack_schema_from_ontology(ontology: &lance_graph_ontology::OntologyRegistry) -> PackedSchema {
+    // Real impl: walk PropertySpec + SemanticType + DOLCE/OWL annotations,
+    // emit compact binary with bitmaps, property char bits, endurant/perdurant flags.
+    // Schema hash = blake3 or similar of the packed bytes.
+    PackedSchema {
+        schema_hash: 0xdeadbeef_cafebabe, // placeholder, compute from content
+        data: vec![0u8; 50 * 1024], // ~50KiB example
+        num_classes: 513,
+        num_properties: 856,
+    }
+}
+
+/// Extension trait or methods on PropertySpec (from lance-graph-contract or ontology)
+/// to expose the OWL bits and DOLCE marker as first-class metadata for planner/MUL.
+/// 
+/// Example: 
+///   if property_spec.is_functional() { /* free prior for MUL gate */ }
+///   if property_spec.is_transitive() { /* path-collapse optimization for planner */ }
+///   if entity_spec.is_endurant() { /* only allow state-changing ops */ } else { /* append-only */ }
+pub trait InvariantMetadata {
+    fn is_functional(&self) -> bool;
+    fn is_inverse_functional(&self) -> bool;
+    fn is_transitive(&self) -> bool;
+    fn is_symmetric(&self) -> bool;
+    fn is_asymmetric(&self) -> bool;
+    fn is_reflexive(&self) -> bool;
+    fn is_irreflexive(&self) -> bool;
+    fn dolce_category(&self) -> DolceCategory;
+}
+
+#[derive(Clone, Copy, Debug, PartialEq, Eq)]
+pub enum DolceCategory {
+    Endurant,   // persists, accumulates properties, state can change (Customer, Queue, Person, Document)
+    Perdurant,  // happens at instants, immutable record (RoutingDecision, MailIntent, TicketResolved)
+    Unknown,
+}
+
+// The synergies (documented in INVARIANT_LAYER.txt):
+// 1. Fast structural rejection before expensive reasoning (nanoseconds, no planner/MUL touch)
+// 2. Schema-derived MUL priors (functional => exactly one match or hard-veto)
+// 3. DOLCE-aligned causality (Pearl interventions only on Endurants; counterfactuals typed differently)
+// 4. Boring-reliable contract for regulated industries (W3C OWL + DOLCE stable 2026-2046)
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use arrow::array::Int32Array;
+    use arrow::datatypes::{DataType, Field, Schema};
+    use arrow::record_batch::RecordBatch;
+    use std::sync::Arc;
+
+    #[test]
+    fn validate_empty_batch_is_ok() {
+        let schema = Arc::new(Schema::new(vec![Field::new("id", DataType::Int32, false)]));
+        let batch = RecordBatch::try_new(schema, vec![Arc::new(Int32Array::from(vec![] as Vec<i32>))]).unwrap();
+        let packed = PackedSchema { schema_hash: 1, data: vec![], num_classes: 0, num_properties: 0 };
+        assert!(matches!(validate(&packed, &batch), ValidationResult::Ok));
+    }
+
+    // More tests would exercise kernel paths, violation kinds, DOLCE checks etc.
+}