# Changelog

All notable changes to the `tensorlogic-adapters` crate will be documented in this file.

The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).

## [0.1.0-rc.1] - 2026-01-28

### Added
- First beta release with all alpha.2 features stabilized
- Production-ready status
- 490 tests passing (100% pass rate)

## [0.1.0-alpha.2] - 2025-11-17

### Added

#### Advanced Features
- **Incremental Validation System** (`incremental_validation.rs` - 937 lines)
  - `ChangeTracker` for recording schema modifications
  - `IncrementalValidator` with 10-100x speedup for large schemas
  - `ValidationCache` for caching validation results
  - `DependencyGraph` for tracking component relationships
  - Batch operation support for atomic updates
  - Change statistics and affected component analysis

- **Query Planning & Optimization** (`query_planner.rs` - 779 lines)
  - `QueryPlanner` with cost-based optimization
  - Multiple index strategies (hash, range, composite, inverted)
  - Rich query language (by name, arity, signature, pattern, domain)
  - `PredicatePattern` with wildcard matching
  - Query AND/OR combinators
  - Plan caching for repeated queries
  - Query statistics tracking (execution count, selectivity, timing)

- **Schema Evolution & Migration** (`evolution.rs` - 822 lines)
  - `EvolutionAnalyzer` for detecting changes between schema versions
  - Breaking change detection with severity categorization
  - `MigrationPlan` generation with rollback support
  - Compatibility analysis (backward/forward)
  - Semantic versioning recommendations (`VersionBump`)
  - Change impact assessment
  - Migration hints and suggestions

- **Product Domains** (`product.rs` - 497 lines)
  - Cartesian product types for cross-domain reasoning
  - Binary/ternary product constructors
  - Automatic cardinality computation
  - Projection and slicing operations
  - Integration with symbol table

- **Computed Domains** (`computed.rs` - 732 lines)
  - Virtual domains derived from operations
  - Filter, union, intersection, difference, product operations
  - Lazy evaluation with caching
  - Automatic cardinality bound computation
  - Dependency tracking via `ComputedDomainRegistry`

- **Lazy Loading** (`lazy.rs` - 600 lines)
  - `LazySymbolTable` for on-demand schema loading
  - Pluggable `SchemaLoader` trait
  - Built-in `FileSchemaLoader`
  - Load strategies: Eager, OnDemand, Predictive, Batched
  - LRU caching with statistics
  - Support for huge schemas (millions of components)

#### Testing Infrastructure
- **Property-Based Tests** (+14 tests in `proptest_validation.rs`)
  - Schema evolution property tests (5 tests)
    - Reflexivity, backward compatibility, breaking change detection
    - Migration plan generation verification
  - Query planner property tests (5 tests)
    - Query correctness, determinism
    - Cache effectiveness validation
  - Evolution module never panics tests
  - Query planner robustness tests

- **CLI Integration Tests** (+4 tests in `integration_tests.rs`)
  - `test_cli_validate_valid_schema` - Schema validation tool
  - `test_cli_migrate_convert` - JSON↔YAML conversion
  - `test_cli_migrate_diff` - Schema diff functionality
  - `test_cli_migrate_merge` - Schema merging
  - All tests use proper temporary file handling

#### Documentation
- **Benchmark Documentation** (`benches/README.md`)
  - Comprehensive benchmark guide (300+ lines)
  - Performance guidelines for small/medium/large schemas
  - Optimization checklist
  - Performance targets and goals
  - CI integration instructions

- **Enhanced Examples** (13 total examples)
  - `13_advanced_integration.rs` - All advanced features combined
  - Updated all example documentation

### Changed
- Updated README with accurate statistics
  - Test count: 223 tests (100% passing)
  - Lines of code: 11,875 (production code)
  - 13 comprehensive examples
  - 4 benchmark suites

### Performance
- Incremental validation: **10-100x speedup** for large schemas
- Query cache hits: **<100ns** (near-instant)
- Schema diff (small): **<20µs**
- Cache hit rate: **90%+** for typical workflows

### Quality
- **Zero compiler warnings**
- **Zero clippy warnings**
- **223/223 tests passing** (100% success rate)
- Comprehensive property-based testing
- Full CLI integration test coverage

## [0.1.0-alpha.1] - 2025-11-03

### Added

#### Core Features
- **Symbol Table System** (`symbol_table.rs`)
  - Central registry for domains, predicates, and variables
  - Efficient lookups with IndexMap (O(1))
  - JSON/YAML serialization support
  - Clone and merge operations

- **Domain Management** (`domain.rs`)
  - Domain definitions with cardinality
  - Element enumeration support
  - Element index lookup
  - Metadata attachment

- **Predicate System** (`predicate.rs`)
  - Predicate metadata with arity tracking
  - Argument domain specifications
  - Constraint attachment
  - Arity validation

- **Domain Hierarchy** (`hierarchy.rs`)
  - Subtype relationships
  - Transitive closure computation
  - Cycle detection
  - Least common supertype finding

- **Predicate Constraints** (`constraint.rs`)
  - Logical properties (symmetric, transitive, reflexive, etc.)
  - Value range constraints
  - Functional dependencies

- **Parametric Types** (`parametric.rs`)
  - Generic domains (List<T>, Option<T>, Pair<A,B>, Map<K,V>)
  - Nested parametric types
  - Type bounds and constraints
  - Type substitution

- **Predicate Composition** (`composition.rs`)
  - Composite predicate definitions
  - Macro expansion with parameter substitution
  - Predicate templates
  - Composition operators (AND, OR, NOT)

- **Rich Metadata** (`metadata.rs`)
  - Provenance tracking
  - Version history
  - Documentation with examples
  - Tagging system with categories
  - Custom attributes

- **Schema Validation** (`validation.rs`)
  - Completeness checks
  - Consistency validation
  - Semantic analysis
  - Detailed validation reports

- **Schema Analysis** (`schema_analysis.rs`)
  - Comprehensive statistics
  - Complexity scoring
  - Usage pattern detection
  - Recommendations engine

- **Performance Optimizations** (`performance.rs`)
  - String interning
  - LRU lookup caching
  - Memory usage tracking

- **Compact Representation** (`compact.rs`)
  - Binary serialization with compression
  - String deduplication
  - Compression statistics

- **Signature Matching** (`signature_matcher.rs`)
  - O(1) predicate lookups by arity/signature
  - Statistics tracking

- **Schema Diff** (`diff.rs`)
  - Schema comparison
  - Modification tracking (domains, predicates, variables)
  - Compatibility checking
  - Merge operations

- **Compiler Integration** (`compiler_integration.rs`)
  - Export/import for compiler context
  - Signature registry building
  - Bundle validation

- **Schema Builder** (`builder.rs`)
  - Fluent API for schema construction
  - Type-safe building
  - Validation during construction

#### CLI Tools
- **schema_validate** (`src/bin/schema_validate.rs`)
  - Schema validation with detailed reports
  - Analysis mode for recommendations
  - Statistics output
  - JSON/YAML support

- **schema_migrate** (`src/bin/schema_migrate.rs`)
  - Format conversion (JSON↔YAML)
  - Schema merging
  - Diff computation
  - Compatibility checking

#### Examples (13 total)
1. `01_symbol_table_basics.rs` - Basic symbol table usage
2. `02_domain_hierarchy.rs` - Type hierarchies
3. `03_parametric_types.rs` - Generic types
4. `04_predicate_composition.rs` - Composite predicates
5. `05_metadata_provenance.rs` - Metadata and tracking
6. `06_signature_matching.rs` - Fast lookups
7. `07_schema_analysis.rs` - Analysis and recommendations
8. `08_schema_builder.rs` - Fluent API
9. `09_product_domains.rs` - Cartesian products
10. `10_computed_domains.rs` - Virtual domains
11. `11_lazy_loading.rs` - On-demand loading
12. `12_comprehensive_integration.rs` - Integration patterns
13. `13_advanced_integration.rs` - Advanced features

#### Benchmarks (4 suites)
1. `symbol_table_benchmarks.rs` - Core operations
2. `incremental_validation_benchmarks.rs` - Validation performance
3. `query_planner_benchmarks.rs` - Query optimization
4. `schema_evolution_benchmarks.rs` - Evolution analysis

#### Testing
- 209 unit tests (100% passing)
- Integration tests for real-world scenarios
- Property-based tests with proptest
- Comprehensive test coverage

### Documentation
- Comprehensive README (550+ lines)
- API documentation with examples
- CLI usage guides
- Architecture overview

## [Unreleased]

### Planned Features
- [ ] SIMD-accelerated validation
- [ ] Parallel schema diff computation
- [ ] Streaming serialization for large schemas
- [ ] Custom memory allocators
- [ ] Zero-copy deserialization
- [ ] GraphQL schema import
- [ ] OpenAPI/Swagger integration
- [ ] Advanced caching strategies
- [ ] Distributed schema management

---

**Versioning**: Following Semantic Versioning 2.0.0
**Repository**: https://github.com/cool-japan/tensorlogic
**License**: Apache-2.0
