walker

Documentation

Overview

Package walker provides a generic resource walker for traversing FHIR resources, Bundle entries, and contained resources with a unified interface.

Index

• type ResourceContext
• type ResourceVisitor
• type Walker
  • func New(reg *registry.Registry) *Walker
  • func (w *Walker) Walk(data map[string]any, rootType, rootPath string, visitor ResourceVisitor)
  • func (w *Walker) WalkWithProfiles(data map[string]any, rootType, rootPath string, visitor ResourceVisitor)

Types

type ResourceContext

type ResourceContext struct {
	// Data is the parsed resource data.
	Data map[string]any

	// ResourceType is the FHIR resource type (e.g., "Patient", "Observation").
	ResourceType string

	// FHIRPath is the path to this resource (e.g., "Bundle.entry[0].resource").
	FHIRPath string

	// SD is the StructureDefinition for validation (may be profile or base type).
	SD *registry.StructureDefinition

	// Profiles contains the URLs from meta.profile (if any).
	Profiles []string

	// IsContained indicates if this is a contained resource.
	IsContained bool

	// IsBundleEntry indicates if this is a Bundle entry resource.
	IsBundleEntry bool

	// ParentPath is the path to the parent resource (if any).
	ParentPath string
}

ResourceContext contains information about a resource being visited.

type ResourceVisitor

type ResourceVisitor func(ctx *ResourceContext) bool

ResourceVisitor is called for each resource found during walking. Return false to stop walking.

type Walker

type Walker struct {
	// contains filtered or unexported fields
}

Walker traverses FHIR resources, including Bundle entries and contained resources.

func New

func New(reg *registry.Registry) *Walker

New creates a new Walker.

func (*Walker) Walk

func (w *Walker) Walk(data map[string]any, rootType, rootPath string, visitor ResourceVisitor)

Walk traverses a resource and all its nested resources (contained, Bundle entries). The visitor is called for each resource, starting with the root.

func (*Walker) WalkWithProfiles

func (w *Walker) WalkWithProfiles(data map[string]any, rootType, rootPath string, visitor ResourceVisitor)

WalkWithProfiles traverses a resource, visiting once per declared profile. For resources with meta.profile, the visitor is called once per profile. For resources without profiles, it's called once with the base SD.