/// <summary>
/// Resolves the value the current selection node.
/// </summary>
/// <param name="context">The <see cref="T:Dora.GraphQL.GraphTypes.ResolverContext" /> in which the field value is resoved.</param>
/// <returns>
/// The resolved field's value.
/// </returns>
public async ValueTask <object> ResolveAsync(ResolverContext context)
{
var arguments = new object[_operation.Parameters.Count];
var index = 0;
foreach (var parameter in _operation.Parameters.Values)
{
var bindingContext = new ArgumentBinderContext(parameter, context);
var result = await _binder.BindAsync(bindingContext);
var value = result.IsArgumentBound
? result.Value
: parameter.ParameterInfo.DefaultValue;
arguments[index++] = value;
}
var serviceProvider = context.GraphContext.RequestServices;
var service = ActivatorUtilities.CreateInstance(serviceProvider, _operation.Service.ServiceType);
var returnType = _executor.MethodInfo.ReturnType;
if (typeof(Task).IsAssignableFrom(returnType) || (returnType.IsGenericType && returnType.GetGenericTypeDefinition() == typeof(ValueTask <>)))
{
return(await _executor.ExecuteAsync(service, arguments));
}
return(_executor.Execute(service, arguments));
}
public ValueTask <ArgumentBindingResult> BindAsync(ArgumentBinderContext context)
{
if (context.Parameter.ParameterInfo.ParameterType == typeof(HttpContext))
{
var httpContext = _httpContextAccessor.HttpContext;
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Success(httpContext)));
}
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Failed()));
}
public ValueTask <ArgumentBindingResult> BindAsync(ArgumentBinderContext context)
{
if (context.Parameter.ParameterInfo.ParameterType == typeof(CancellationToken))
{
var requestAborted = _httpContextAccessor.HttpContext.RequestAborted;
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Success(requestAborted)));
}
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Failed()));
}
public ValueTask <ArgumentBindingResult> BindAsync(ArgumentBinderContext context)
{
if (context.Parameter.ParameterInfo.ParameterType == typeof(GraphContext))
{
var graphContext = _httpContextAccessor.HttpContext.Features.Get <IGraphContextFeature>().GraphContext;
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Success(graphContext)));
}
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Failed()));
}
public ValueTask <ArgumentBindingResult> BindAsync(ArgumentBinderContext context)
{
var serviceProvider = context.ResolverContext.GraphContext.RequestServices;
var type = context.Parameter.ParameterInfo.ParameterType;
var argumentValue = serviceProvider.GetService(type);
if (null != argumentValue)
{
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Success(argumentValue)));
}
return(new ValueTask <ArgumentBindingResult>(ArgumentBindingResult.Failed()));
}
