Unable to inject schema when using more than one schema in Dependecy Injection.

[myteam-vishnu]

Hi all,

Here, i am having a problem with Ischema, When i am using ISchema i need to define type of that but problem occurs when need to use multiple schema as we can define one schema type only at a time.

Here, i am sharing code with you.

private ISimpleContainer BuildContainer()
{
var container = new SimpleContainer();
container.Singleton(new DocumentExecuter());
container.Singleton(new DocumentWriter(true));

        container.Singleton(new StarWarsData());
        container.Register<StarWarsQuery>();
        container.Register<StarWarsMutation>();
        container.Register<HumanType>();
        container.Register<HumanInputType>();
        container.Register<DroidType>();
        container.Register<CharacterInterface>();

      /*As here i am adding ISchema as type so this is calling properly but ..*/
        container.Singleton<ISchema>(new StarWarsSchema(new FuncDependencyResolver(type => 
        container.Get(type))));

    /*When need to add another one then it is not calling let alone get executed...*/
        container.Singleton<ISchema>(new EpisodeSchema(new FuncDependencyResolver(type => 
        container.Get(type))));
   // following is the error, i am getting while executing this code...
 // Dictionary can not add multiple instnace of ISchema.



        return container;
    }

thanks

[Joe McBride]

If you need more than one Schema, then you can’t use a singleton. A singleton means there is only a single instance of that type. I suggest to read the documentation of the container you’re using and reach out to that project to know how to structure your classes with that container.