public static Schema Create()
{
var repository = new CharacterRepository();
var services = new Dictionary <Type, object>();
services[typeof(CharacterRepository)] = repository;
services[typeof(Query)] = new Query(repository);
services[typeof(Mutation)] = new Mutation();
var serviceResolver = new Func <Type, object>(
t =>
{
if (services.TryGetValue(t, out object s))
{
return(s);
}
return(null);
});
var serviceProvider = new Mock <IServiceProvider>(MockBehavior.Strict);
serviceProvider.Setup(t => t.GetService(It.IsAny <Type>()))
.Returns(serviceResolver);
return(Schema.Create(c =>
{
c.RegisterServiceProvider(serviceProvider.Object);
c.RegisterQueryType <QueryType>();
c.RegisterMutationType <MutationType>();
c.RegisterType <HumanType>();
c.RegisterType <DroidType>();
c.RegisterType <EpisodeType>();
}));
}
public static IEnumerable <ICharacter> GetCharacter(
IResolverContext context)
{
ICharacter character = context.Parent <ICharacter>();
CharacterRepository repository = context.Service <CharacterRepository>();
foreach (string friendId in character.Friends)
{
ICharacter friend = repository.GetCharacter(friendId);
if (friend != null)
{
yield return(friend);
}
}
}
public Query(CharacterRepository repository)
{
_repository = repository
?? throw new System.ArgumentNullException(nameof(repository));
}