public static void Run()
{
var parent = new Person {
Name = "Adam"
};
var child1 = new Person {
Name = "Abel"
};
var child2 = new Person {
Name = "Cain"
};
var relationships = new Relationships();
relationships.AddParentAndChild(parent, child1);
relationships.AddParentAndChild(parent, child2);
// consumer has no direct access to the data in relationships
// but is aware that this data is accessible via interface
var children = relationships.FindAllChildrenOf("Adam");
foreach (var child in children)
{
Console.WriteLine($"Adam has a child named {child.Name}");
}
}
public IEnumerable <Person> FindAllChildrenOf(Person parent)
{
// find all Ana's children
// 1. metod 1
// expose private _relationships._relations as public, wich is baaaad
// ...
// 2. method 2
return(_relationships.FindAllChildrenOf(parent.Name));
}
