public PagingBooksSchema(IServiceProvider resolver, PagingBooksQuery booksQuery, PagingBooksMutation booksMutation) : base(resolver)
{
Query = booksQuery;
Mutation = booksMutation;
}
public static void AddBookAuthorsOutputQueries(this PagingBooksQuery booksQuery, QueryBuilderFactory queryBuilderFactory)
{
queryBuilderFactory.Create <BookAuthorsOutput>(booksQuery, "getBookAuthorsByCategory")
.WithPaging()
.WithCache(TimeSpan.FromSeconds(10))
.WithParameterBuilder()
// We need to get all book-authors by book category. In order to perform this, we need to get all books with the category first.
.BeginWithProperty <Book>(x => x.Category, ctx =>
{
// Temporary store books in storage.
ctx.Items["books"] = ctx.GetQueryResults <Book>();
})
// Then, we can get all book authors what has the book ids.
.ThenWithProperty <BookAuthors>(x => x.BookId, ctx => ctx.GetItems <Book>("books").Select(y => (object)y.Id).ToList(), ctx =>
{
// Map initial result.
var bookAuthors = ctx.GetQueryResults <BookAuthors>();
var books = ctx.GetItems <Book>("books");
ctx.SetResults(bookAuthors.Select(ba => new BookAuthorsOutput
{
Id = ba.Id,
Book = books.Single(o => o.Id == ba.BookId),
AuthorIdList = ba.AuthorIdList,
BookId = ba.BookId,
RoyaltyType = ba.RoyaltyType
}).ToList());
})
// Lastly, we can get all the authors for all the found books.
.ThenWithProperty <Author>(x => x.Id, ctx =>
{
var list = new List <string>();
ctx.GetResults <BookAuthorsOutput>().ForEach(y => list.AddRange(y.AuthorIdList));
return(list.Distinct().Select(y => (object)y).ToList());
}, ctx =>
{
// Map authors to result.
var authors = ctx.GetQueryResults <Author>();
// Only include authors who are in the AuthorIdList in each individual book author.
ctx.GetResults <BookAuthorsOutput>().ForEach(ba => ba.Authors = authors.Where(x => ba.AuthorIdList.Contains(x.Id)).ToList());
})
.BuildQuery()
.AssertWithClaimsPrincipal(cp => cp.IsInRole("Eklee.User.Read"))
.BuildWithListResult();
queryBuilderFactory.Create <BookAuthorsOutput>(booksQuery, "getBookAuthorsById")
.WithPaging()
.WithCache(TimeSpan.FromSeconds(10))
.WithParameterBuilder()
.BeginWithProperty <BookAuthors>(x => x.Id, ctx =>
{
ctx.SetResults(ctx.GetQueryResults <BookAuthors>().Select(ba => new BookAuthorsOutput
{
Id = ba.Id,
AuthorIdList = ba.AuthorIdList,
BookId = ba.BookId,
RoyaltyType = ba.RoyaltyType
}).ToList());
})
.ThenWithProperty <Author>(x => x.Id, ctx =>
{
var list = new List <string>();
ctx.GetResults <BookAuthorsOutput>().ForEach(y => list.AddRange(y.AuthorIdList));
return(list.Distinct().Select(y => (object)y).ToList());
}, ctx =>
{
// Map authors to result.
var authors = ctx.GetQueryResults <Author>();
// Only include authors who are in the AuthorIdList in each individual book author.
ctx.GetResults <BookAuthorsOutput>().ForEach(ba => ba.Authors = authors.Where(x => ba.AuthorIdList.Contains(x.Id)).ToList());
})
.BuildQuery()
.BuildWithSingleResult();
queryBuilderFactory.Create <BookAuthorsOutput>(booksQuery, "getBookAuthorsByRoyaltyType")
.WithPaging()
.WithCache(TimeSpan.FromSeconds(10))
.WithParameterBuilder()
.BeginWithProperty <BookAuthors>(x => x.RoyaltyType, ctx =>
{
ctx.SetResults(ctx.GetQueryResults <BookAuthors>().Select(ba => new BookAuthorsOutput
{
Id = ba.Id,
AuthorIdList = ba.AuthorIdList,
BookId = ba.BookId,
RoyaltyType = ba.RoyaltyType
}).ToList());
})
.ThenWithProperty <Author>(x => x.Id, ctx =>
{
var list = new List <string>();
ctx.GetResults <BookAuthorsOutput>().ForEach(y => list.AddRange(y.AuthorIdList));
return(list.Distinct().Select(y => (object)y).ToList());
}, ctx =>
{
// Map authors to result.
var authors = ctx.GetQueryResults <Author>();
// Only include authors who are in the AuthorIdList in each individual book author.
ctx.GetResults <BookAuthorsOutput>().ForEach(ba => ba.Authors = authors.Where(x => ba.AuthorIdList.Contains(x.Id)).ToList());
})
.BuildQuery()
.BuildWithListResult();
}