public BookQuery(BookQueryHandler queryHandler)
{
Field <BookType>(
"book",
arguments: new QueryArguments(
new QueryArgument <IdGraphType> {
Name = "id", Description = "The ID of the book."
}),
resolve: context =>
{
var id = context.GetArgument <int>("id");
var query = new GetBookByIdQuery {
Id = id
};
var book = queryHandler.Handle(query);
return(book);
});
Field <ListGraphType <BookType> >(
"books",
resolve: context =>
{
var query = new GetBooksQuery();
var books = queryHandler.Handle(query);
return(books);
});
}
public async Task <IActionResult> Get(Guid id)
{
var query = new GetBookByIdQuery(id);
var result = await _mediator.Send(query);
return(result != null ? (IActionResult)Ok(result) : NotFound());
}
public async Task <Book> Handle(GetBookByIdQuery query)
{
return(await _libraryContext.Set <Book>()
.Include(e => e.Author)
.Include(e => e.Category)
.Include(e => e.Country)
.Include(e => e.Language)
.Include(e => e.Publisher)
.SingleOrDefaultAsync(e => e.Id == query.Id));
}
public async Task <IActionResult> GetBookById(int libraryId, int bookId, CancellationToken token)
{
var request = new GetBookByIdQuery(libraryId, bookId, _userHelper.Account?.Id);
var book = await _queryProcessor.ExecuteAsync(request, cancellationToken : token);
if (book != null)
{
return(new OkObjectResult(_bookRenderer.Render(book, libraryId)));
}
return(new NotFoundResult());
}
public Book Get(GetBookByIdQuery query)
{
// Process query... & return
}