developer-delphi-language-rtti

To map JSON to Delphi objects dynamically, you use RTTI to inspect type information at runtime and populate object properties from JSON data without hardcoding field assignments. This enables automated JSON↔object mapping.

Delphi RTTI handles attribute-based dependency injection by reading TCustomAttribute metadata applied to classes or fields at runtime, allowing the framework to resolve and inject dependencies automatically without manual wiring.

The best way to enumerate class properties in Delphi at runtime is using TRttiContext to obtain a TRttiType instance, which provides access to TRttiProperty collections for iterating through all published fields and properties dynamically.

You use TValue in Delphi reflection to safely store, retrieve, and convert runtime type values during dynamic property manipulation. TValue ensures type-safe value handling when reading or writing fields via RTTI without direct pointer casting.

You need explicit RTTI access in Delphi when building dynamic systems like metadata-driven JSON mapping, runtime property inspection, or dynamic method invocation. It allows your code to adapt to type structures unknown at compile time.

Yes, you can invoke methods dynamically in Delphi using TRttiMethod instances retrieved via RTTI. This allows you to call methods on objects by name at runtime, passing arguments wrapped in TValue for type-safe execution.