ATLNavigationExpression

struct ATLNavigationExpression

Overview

Navigation expressions provide access to object properties and references, enabling traversal of model structures according to metamodel specifications. They support both single-valued and multi-valued property access with automatic collection handling.

Overview

Navigation expressions handle several navigation patterns:

• Attribute access: Simple property value retrieval

• Reference navigation: Traversal of object relationships

• Collection navigation: Access to multi-valued properties

• Opposite navigation: Reverse reference traversal

• Meta-property access: Reflection-based property queries

Example Usage

// Navigate to firstName property
let firstNameExpr = ATLNavigationExpression(
    source: ATLVariableExpression(name: "member"),
    property: "firstName"
)

// Navigate to family reference
let familyExpr = ATLNavigationExpression(
    source: ATLVariableExpression(name: "member"),
    property: "family"
)