How to convert an IQueryable<T> to an IRavenQueryable<T> ?

[Justin A]

Hi :)

I usually do linq filters to make my code a bit readble. This returns an IQueryably<T> .. so when I wish to do something like an .Include .. it doesn't work because of unable to implicit covnert.

Is there a trick I'm missing?

for example:

(pseduo codeish)

    public static class InviteFilters

    {

        public static IQueryable<Invite> WithToken(this IQueryable<Invite> value,

                                                   string token)

        {

            token.ShouldNotBeNullOrWhiteSpace();

            return value.Where(x => x.Token == token);

        }

    }

...

var invite = session.Query<Invite>()

                    .WithToken(someToken)

                    .Include(x => x.CreatedByUserId)

                    .SingleAsync();

So here, you can see i'm trying to load an Invite based upon a Token and then include the user who made this invite. Ok, sweet. But I can't because Include expects an IRavenQueryable while my filter returns a normal IQueryable.

Thoughts please?

-me-

[Oren Eini (Ayende Rahien)]

You can cast it, or change you method to accept and return IRavenQueryable

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Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

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[Justin A]

do you mean with an explicit cast =>((IRavenQueryable)myQueryable).Include.... ?

[Oren Eini (Ayende Rahien)]

        public static IRavenQueryable<Invite> WithToken(this IRavenQueryable<<Invite> value,

Hibernating Rhinos Ltd  

Oren Eini l CEO l Mobile: + 972-52-548-6969

Office: +972-4-622-7811 l Fax: +972-153-4-622-7811

 

On Mon, May 16, 2016 at 9:04 AM, Justin A <jus...@adler.com.au> wrote:

do you mean with an explicit cast =>((IRavenQueryable)myQueryable).Include.... ?

--

[Justin A]

Ah - soz. I forgot to mention, I don't want to change the filter because that would mean the filters take a dependency on RavenDb.Client, etc.

[Daniel Häfele]

But in that use-case you already have a dependency on RavenDB, right?

Maybe you want a RavenDB queryable wrapper extension method for your original one?

public static class InviteRavenFilters
{
    public static IRavenQueryable<Invite> WithToken(this IRavenQueryable<Invite> value, string token)
    {
        return (IRavenQueryable<Invite>)value.WithToken(token);
    }
}