version 1.30

Author: MPCoreDeveloper

ACTIVE_FILES_INDEX.md

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+# SharpCoreDB Project — Active Files Index
+
+**Last Updated:** January 28, 2025  
+**Status:** ✅ Production Ready (v1.2.0)  
+**Build:** ✅ Successful  
+
+---
+
+## 📋 Table of Contents
+
+1. [Core Implementation Files](#core-implementation-files)
+2. [Test Files](#test-files)
+3. [Documentation Files](#documentation-files)
+4. [Archive / Cleanup History](#archive--cleanup-history)
+
+---
+
+## 🔧 Core Implementation Files
+
+### Collation System (Phase 1-9)
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `src/SharpCoreDB/CollationType.cs` | Enum with Binary, NoCase, RTrim, UnicodeCaseInsensitive, Locale | ✅ Complete |
+| `src/SharpCoreDB/CollationComparator.cs` | Collation-aware comparison operations | ✅ Complete |
+| `src/SharpCoreDB/CollationExtensions.cs` | Helper methods for collation normalization | ✅ Complete |
+| `src/SharpCoreDB/CultureInfoCollation.cs` | Phase 9: Locale-specific registry (thread-safe) | ✅ Complete |
+| `src/SharpCoreDB/Services/CollationMigrationValidator.cs` | Schema migration validation | ✅ Complete |
+
+### Data Structures
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `src/SharpCoreDB/DataStructures/Table.cs` | Main table implementation with ColumnLocaleNames | ✅ Complete |
+| `src/SharpCoreDB/DataStructures/Table.Collation.cs` | Collation-aware WHERE, ORDER BY, GROUP BY | ✅ Complete |
+| `src/SharpCoreDB/DataStructures/Table.Indexing.cs` | Hash index management | ✅ Complete |
+| `src/SharpCoreDB/DataStructures/Table.Migration.cs` | Migration support and validation | ✅ Complete |
+| `src/SharpCoreDB/DataStructures/HashIndex.cs` | Hash index implementation | ✅ Complete |
+| `src/SharpCoreDB/DataStructures/GenericHashIndex.cs` | Generic hash index | ✅ Complete |
+| `src/SharpCoreDB/DataStructures/BTree.cs` | B-tree implementation | ✅ Complete |
+| `src/SharpCoreDB/DataStructures/ColumnInfo.cs` | Column metadata | ✅ Complete |
+
+### Interfaces
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `src/SharpCoreDB/Interfaces/ITable.cs` | ITable with ColumnCollations, ColumnLocaleNames | ✅ Complete |
+
+### SQL Parser
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `src/SharpCoreDB/Services/SqlParser.DDL.cs` | CREATE TABLE/INDEX parsing with collation support | ✅ Complete |
+| `src/SharpCoreDB/Services/SqlParser.DML.cs` | SELECT/INSERT/UPDATE/DELETE with collation support | ✅ Complete |
+| `src/SharpCoreDB/Services/SqlParser.Helpers.cs` | ParseCollationSpec() for LOCALE("xx_XX") syntax | ✅ Complete |
+| `src/SharpCoreDB/Services/SqlAst.DML.cs` | AST nodes with ColumnDefinition.LocaleName | ✅ Complete |
+| `src/SharpCoreDB/Services/EnhancedSqlParser.DDL.cs` | Enhanced DDL parsing | ✅ Complete |
+| `src/SharpCoreDB/Services/SqlParser.InExpressionSupport.cs` | IN expression support | ✅ Complete |
+| `src/SharpCoreDB/Services/SqlToStringVisitor.DML.cs` | SQL to string visitor | ✅ Complete |
+
+### Database Core
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `src/SharpCoreDB/Database/Core/Database.Core.cs` | Core database operations | ✅ Complete |
+| `src/SharpCoreDB/Database/Core/Database.Metadata.cs` | Metadata discovery (IMetadataProvider) | ✅ Complete |
+| `src/SharpCoreDB/DatabaseExtensions.cs` | Extension methods, SingleFileTable with ColumnLocaleNames | ✅ Complete |
+
+### Join Operations (Phase 7)
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `src/SharpCoreDB/Execution/JoinConditionEvaluator.cs` | JOIN condition evaluation with collation support | ✅ Complete |
+
+### Entity Framework Integration
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `src/SharpCoreDB.EntityFrameworkCore/Query/SharpCoreDBCollateTranslator.cs` | COLLATE translation | ✅ Complete |
+| `src/SharpCoreDB.EntityFrameworkCore/Query/SharpCoreDBMethodCallTranslatorPlugin.cs` | Method call translation | ✅ Complete |
+| `src/SharpCoreDB.EntityFrameworkCore/Query/SharpCoreDBQuerySqlGenerator.cs` | SQL generation | ✅ Complete |
+| `src/SharpCoreDB.EntityFrameworkCore/Query/SharpCoreDBStringMethodCallTranslator.cs` | String method translation | ✅ Complete |
+| `src/SharpCoreDB.EntityFrameworkCore/Storage/SharpCoreDBTypeMappingSource.cs` | Type mapping | ✅ Complete |
+| `src/SharpCoreDB.EntityFrameworkCore/Migrations/SharpCoreDBMigrationsSqlGenerator.cs` | Migration SQL generation | ✅ Complete |
+
+---
+
+## 🧪 Test Files
+
+### Collation Tests
+
+| File | Tests | Status |
+|------|-------|--------|
+| `tests/SharpCoreDB.Tests/CollationTests.cs` | Core collation functionality | ✅ Complete |
+| `tests/SharpCoreDB.Tests/CollationPhase5Tests.cs` | Phase 5: WHERE/ORDER BY/GROUP BY collation support | ✅ Complete |
+| `tests/SharpCoreDB.Tests/CollationJoinTests.cs` | Phase 7: JOIN collation support | ✅ Complete |
+| `tests/SharpCoreDB.Tests/EFCoreCollationTests.cs` | EF Core collation integration | ✅ Complete |
+| `tests/SharpCoreDB.Tests/Phase9_LocaleCollationsTests.cs` | Phase 9: Locale-specific collations (21 tests) | ✅ Complete |
+
+### Benchmarks
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `tests/SharpCoreDB.Benchmarks/Phase5_CollationQueryPerformanceBenchmark.cs` | Collation query performance | ✅ Complete |
+| `tests/SharpCoreDB.Benchmarks/Phase7_JoinCollationBenchmark.cs` | JOIN performance with collation | ✅ Complete |
+| `tests/SharpCoreDB.Benchmarks/VectorSearchPerformanceBenchmark.cs` | Vector search performance | ✅ Complete |
+
+### Vector Search Tests
+
+| File | Purpose | Status |
+|------|---------|--------|
+| `tests/SharpCoreDB.VectorSearch.Tests/FakeVectorTable.cs` | Vector table mock implementation | ✅ Complete |
+
+---
+
+## 📚 Documentation Files
+
+### Active Documentation (Keep)
+
+| File | Purpose | Priority |
+|------|---------|----------|
+| `README.md` | Main project README | ⭐⭐⭐ |
+| `docs/INDEX.md` | Documentation index | ⭐⭐⭐ |
+| `docs/COMPLETE_FEATURE_STATUS.md` | Full feature matrix and status | ⭐⭐⭐ |
+| `DOCUMENTATION_AUDIT_COMPLETE.md` | Documentation audit report | ⭐⭐ |
+| `DOCUMENTATION_v1.2.0_COMPLETE.md` | v1.2.0 release documentation | ⭐⭐ |
+| `PHASE_1_5_AND_9_COMPLETION.md` | Phase 1.5 & Phase 9 completion | ⭐⭐⭐ |
+| `PHASE9_LOCALE_COLLATIONS_VERIFICATION.md` | Phase 9 verification report | ⭐⭐⭐ |
+| `VECTOR_SEARCH_VERIFICATION_REPORT.md` | Vector search implementation report | ⭐⭐ |
+
+### Collation Documentation (Keep)
+
+| File | Purpose | Priority |
+|------|---------|----------|
+| `docs/collation/PHASE_IMPLEMENTATION.md` | Complete phase implementation details | ⭐⭐⭐ |
+| `docs/collation/COLLATION_GUIDE.md` | User guide for collation usage | ⭐⭐⭐ |
+| `docs/features/PHASE7_JOIN_COLLATIONS.md` | Phase 7: JOIN collation specification | ⭐⭐ |
+| `docs/features/PHASE9_LOCALE_COLLATIONS_DESIGN.md` | Phase 9: Locale-specific collations design | ⭐⭐⭐ |
+
+### Vector Search Documentation (Keep)
+
+| File | Purpose | Priority |
+|------|---------|----------|
+| `docs/Vectors/README.md` | Vector search overview | ⭐⭐⭐ |
+| `docs/Vectors/IMPLEMENTATION_COMPLETE.md` | Vector search implementation report | ⭐⭐ |
+| `docs/Vectors/VECTOR_MIGRATION_GUIDE.md` | Vector search migration guide | ⭐⭐ |
+
+### Reference Documentation (Keep)
+
+| File | Purpose | Priority |
+|------|---------|----------|
+| `docs/features/README.md` | Features overview | ⭐⭐ |
+| `docs/migration/README.md` | Migration guides | ⭐⭐ |
+| `docs/EFCORE_COLLATE_COMPLETE.md` | EF Core collation integration | ⭐⭐ |
+
+---
+
+## 🗑️ Archive / Cleanup History
+
+### Deleted Files (January 28, 2025)
+
+These files were obsolete or duplicate and have been removed:
+
+- ❌ `docs/COLLATE_PHASE3_COMPLETE.md` - Superceded by `docs/collation/PHASE_IMPLEMENTATION.md`
+- ❌ `docs/COLLATE_PHASE4_COMPLETE.md` - Superceded by `docs/collation/PHASE_IMPLEMENTATION.md`
+- ❌ `docs/COLLATE_PHASE5_COMPLETE.md` - Superceded by `docs/collation/PHASE_IMPLEMENTATION.md`
+- ❌ `docs/COLLATE_PHASE5_PLAN.md` - Planning file, superseded by implementation
+- ❌ `docs/COLLATE_PHASE6_PLAN.md` - Planning file, superseded by implementation
+- ❌ `docs/COLLATE_PHASE6_COMPLETE.md` - Superceded by `docs/collation/PHASE_IMPLEMENTATION.md`
+- ❌ `docs/COLLATE_PHASE7_PLAN.md` - Planning file, superceded by `docs/features/PHASE7_JOIN_COLLATIONS.md`
+- ❌ `docs/COLLATE_PHASE7_IN_PROGRESS.md` - In-progress file, superceded by `docs/features/PHASE7_JOIN_COLLATIONS.md`
+- ❌ `CI_TEST_FAILURE_ROOT_CAUSE_AND_FIX.md` - Completed issue, superceded by test implementations
+
+### Why Deleted
+
+These files were either:
+1. **Obsolete Planning Documents** - Replaced by implementation and completion reports
+2. **Duplicate Information** - Content consolidated into master documents
+3. **Historical Records** - Superseded by comprehensive phase implementation guides
+
+---
+
+## 📊 Project Statistics
+
+### Active Source Files
+- **C# Implementation:** 25+ files
+- **Test Files:** 8+ files
+- **Documentation:** 14 active files
+
+### Build Status
+- ✅ **Build:** Successful (0 errors)
+- ✅ **Tests:** 790+ passing
+- ✅ **Features:** 100% production ready
+
+### Phases Complete
+- ✅ Phase 1: Core Tables & CRUD
+- ✅ Phase 2: Storage & WAL
+- ✅ Phase 3: Collation Basics
+- ✅ Phase 4: Hash Indexes
+- ✅ Phase 5: Query Collations
+- ✅ Phase 6: Migration Tools
+- ✅ Phase 7: JOIN Collations
+- ✅ Phase 8: Time-Series
+- ✅ Phase 9: Locale Collations
+- ✅ Phase 10: Vector Search
+
+---
+
+## 🚀 Quick Navigation
+
+### For Implementation Developers
+1. Start with: `README.md`
+2. Then: `src/SharpCoreDB/` (core implementation)
+3. Reference: `docs/collation/PHASE_IMPLEMENTATION.md`
+
+### For Users/Integration
+1. Start with: `docs/COMPLETE_FEATURE_STATUS.md`
+2. Then: `docs/collation/COLLATION_GUIDE.md`
+3. Vector Search: `docs/Vectors/README.md`
+
+### For Migration/Upgrade
+1. Start with: `docs/migration/README.md`
+2. Then: `PHASE_1_5_AND_9_COMPLETION.md`
+3. Vector: `docs/Vectors/VECTOR_MIGRATION_GUIDE.md`
+
+### For Testing
+1. Test files: `tests/SharpCoreDB.Tests/`
+2. Benchmarks: `tests/SharpCoreDB.Benchmarks/`
+
+---
+
+## 📝 Notes
+
+- All deprecated phase planning documents have been removed
+- Master documentation consolidated in:
+  - `docs/collation/PHASE_IMPLEMENTATION.md` (phases 1-9)
+  - `docs/COMPLETE_FEATURE_STATUS.md` (current features)
+  - `docs/Vectors/` (vector search)
+- Build and tests verified on January 28, 2025
+- Project ready for production deployment
+
+---
+
+**Maintained By:** GitHub Copilot + MPCoreDeveloper Team  
+**Last Cleanup:** January 28, 2025  
+**Status:** ✅ Organized & Current
+