Refactor tests to use _All_True model types throughout
Replaced all usages of legacy test model types (e.g., TestOrder, TestOrderItem, SharedTag, etc.) with new, feature-complete _All_True variants across SignalR test infrastructure, data sources, and service handlers. Updated all generic constraints, method signatures, and test data to use the new types. Added SharedTestBaseModels.cs and SharedTestOrderModels.cs to define abstract bases and concrete _All_True models with full serialization attributes. This enables more thorough and realistic serialization/deserialization testing and future extensibility.
Adds robust IId<T>-based reference deduplication to both serialization and deserialization. Objects with the same type and Id are now treated as the same reference, reducing output size and ensuring correct reference identity in complex graphs.
Key changes:
- TypeMetadataBase: Adds IdAccessorType, typed Id getters, and precomputed property arrays for zero-boxing and fast access.
- AcSerializerCommon: Introduces IIdReferenceTracker for efficient (Type, Id) → object mapping.
- SerializationReferenceTracker: Now supports both ReferenceEquals and IId-based tracking for scanning and writing.
- AcBinarySerializer: Reference scan uses IId-aware deduplication, skipping types that don't need tracking.
- AcBinaryDeserializer: Adds per-context IId caches to ensure reference identity on deserialization.
- PropertyAccessorBase: Adds IsComplexType for fast scan decisions.
- Populate/Chain: Integrated with new IId cache for correct deduplication.
- Tests: Adds/updates tests for IId identity, cross-type safety, and diagnostics.
- Benchmarks: Adds WithRef/NoRef and AcJson vs System.Text.Json.
- Documentation: Includes detailed implementation plan and rationale.
No breaking changes for types that do not use IId. Zero-boxing for int/long/Guid Ids. Reference identity is now preserved for all IId objects.
Major overhaul of serialization/deserialization infrastructure:
- Introduced unified Chain API for binary/JSON, enabling multi-deserialization/population with strong IId reference identity (critical for Blazor/DXGrid).
- Added base classes for property accessors/setters and centralized type metadata.
- Implemented ChainReferenceTracker and shared IIdCollectionMergeHelper for reference tracking and collection merging.
- Refactored property access logic to use typed delegates for primitives/enums.
- Updated extension methods and replaced legacy chain/populate interfaces.
- Improved error handling and diagnostics.
- Added comprehensive tests for chain API and reference preservation.
- Minor fixes and performance optimizations throughout.
Loretta