在运行时查找CoreData模型的实体

import CoreData

// 获取CoreData模型文件的URL
guard let modelURL = Bundle.main.url(forResource: "DataModel", withExtension: "momd") else {
    fatalError("Failed to find data model file")
}

// 加载CoreData模型
guard let managedObjectModel = NSManagedObjectModel(contentsOf: modelURL) else {
    fatalError("Failed to load managed object model")
}

// 获取实体的描述信息
guard let entityDescription = managedObjectModel.entitiesByName["EntityName"] else {
    fatalError("Failed to find entity")
}

// 输出实体的名称
print(entityDescription.name)

// 输出实体的属性
for property in entityDescription.properties {
    print(property.name)
}

// 输出实体的关系
for relationship in entityDescription.relationships {
    print(relationship.name)
}