public static Task <T> InvokeAsync <T>(
this IGraphQLQueryResolver resolver,
IResolveFieldContext <object> context,
string methodName)
{
var type = resolver.GetType();
var method = type.GetMethod(methodName);
var values = new List <object>();
foreach (var p in method.GetParameters())
{
values.Add(context.GetArgument(p.ParameterType, p.Name));
}
return((Task <T>)method.Invoke(resolver, values.ToArray()));
}
public static void AddFieldToQuery <TFrom, TTo>(
this IGraphQLQueryResolver resolver,
IObjectGraphType query,
string name,
string methodName)
where TFrom : ObjectGraphType <TTo>
{
(query as ObjectGraphType)
.FieldAsync <ListGraphType <TFrom> >(
name,
arguments: resolver.GetQueryArguments(methodName),
resolve: async context =>
{
return(await resolver.InvokeAsync <IEnumerable <TTo> >(context, methodName));
});
}
public static QueryArguments GetQueryArguments(
this IGraphQLQueryResolver resolver,
string methodName)
{
var type = resolver.GetType();
var method = type.GetMethod(methodName);
var arguments = new QueryArguments();
foreach (var p in method.GetParameters())
{
arguments.Add(new QueryArgument(GetGraphQLType(p.ParameterType))
{
Name = p.Name
});
}
return(arguments);
}