Field Definition

FieldDefinition in stapi.ai's Core represents an essential component in defining fields within a ComplexStructureType, directly assisting in the process of declarative Domain-Driven Design (DDD) business logic modeling.

FHIR Connection and Domain-Driven Design

Each complex type in FHIR contains numerous fields that embody specific values. Analogously, FieldDefinition outlines these fields within the context of a ComplexStructureType in stapi.ai's Core. As an encapsulation of the FHIR ElementDefinition (opens in a new tab) type, each FieldDefinition characterizes a field's type, cardinality, and other attributes.

In the realm of DDD, FieldDefinition delineates the attributes of Value Objects and Entities. Together with complex and primitive types in the schema, it forms the structural backbone of a domain model.

Role in Declarative Programming

In declarative programming with stapi.ai Core, FieldDefinition is pivotal in prescribing the structure of data within complex types. This clear definition of 'what' a system needs to handle empowers the underlying layers to focus on the 'how'—the specific mechanics of data management and processing.

As FieldDefinition echoes the field concepts within FHIR's complex types, it facilitates the structuring and modeling of data, regardless of the application domain. This standardization simplifies system implementation and promotes enhanced interoperability.

Consider FieldDefinition as a vital piece of the broader StructureSchema system. For a comprehensive understanding of the whole, also explore the PrimitiveStructureType and ComplexStructureType components.