DA PCL Async Problem

Relativity Server
1

Hi,

Recently started using DA.Net for cross platform projects.

I’m using the Portable Class Library w/ DA LINQ, and everything needs to be Async.

My problem is that when i try to run a Query, the NeedsLogin kicks in but since the login is ALSO async, the query always fails with “Session not found”. Been searching for a sample but no luck.

Any ideas!!..please advice.

Regards.

2

Hello.

Thank you for the report. We are investigating this problem at the moment. We will inform you when we find a solution.

Thanks

3

Hello.

To solve the problem please handle client’s channel OnLoginNeeded event as follows:

    void fClientChannel_OnLoginNeeded(object sender, LoginNeededEventArgs e)
    {
        var res = LogOnAsync(user, password).Result;
        e.Retry = res;
        e.LoginSuccessful = res;
    }

In this async version for logon will be as follows:

    public Task<Boolean> LogOnAsync(String userId, String password)
    {
        return (new RemObjects.DataAbstract.Server.BaseLoginService_AsyncProxy(this.fMessage, this.fClientChannel, "LoginService")).LoginExAsync(String.Format(DataModule.ConnectionString, userId, password));
    }

After these changes client will log in before get data.

Thanks

4

Hi,

Thanks for the reply. I tried this approach but i am getting the following error:

Error CS1061: Type RemObjects.DataAbstract.Server.BaseLoginService_AsyncProxy' does not contain a definition forLoginExAsync’ and no extension method LoginExAsync' of typeRemObjects.DataAbstract.Server.BaseLoginService_AsyncProxy’ could be found.

Regards,

5

Hello.

Please add RemObjects.DataAbstract to uses. This namespace is needed to allow compiler to resolve the extension method LoginExAsync.

Thanks

6

Hi,

I am using it. Here is my entire using block:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using RemObjects.SDK;
using RemObjects.DataAbstract;
using RemObjects.DataAbstract.Linq;

7

Hello.

Please check RemObjects.DataAbstract.Async assembly in the references. Add it manually if it is not placed here. This assembly contains LoginExAsync extension method implementation.

Thanks

8

Hi,

I do not have that dll.

I’m runing “RemObjects+Data+Abstract+for+.NET±+7.0.75.1117”.

Btw, i am using Xamarin but anyway i don’t see that ‘RemObjects.DataAbstract.Async.dll’ in my installation, not in the PortableClassLibrary forlder or the .NET Folder or any of the Mono(xxx) folders.

Regards,

9

Hello.

Sorry for the misunderstanding you. This extension method was added after Spring 2014 release. Please add the next LoginExAsync implementation into your code

    public Task<Boolean> LogOnAsync(String userId, String password)
    {
        return this.LoginExAsync(String.Format(DataModule.ConnectionString, userId, password));
    }

    public Task<Boolean> LoginExAsync(String loginString)
    {
        RemObjects.DataAbstract.Server.IBaseLoginService_Async lAsyncService
            = (new RemObjects.DataAbstract.Server.BaseLoginService_AsyncProxy(this.fMessage, this.fClientChannel, "LoginService"));
        return Task<Boolean>.Factory.FromAsync<String>(lAsyncService.BeginLoginEx, lAsyncService.EndLoginEx, loginString, null);
    }

Thanks