public static ISchemaBuilder AddResolver <TResult>(
this ISchemaBuilder builder,
NameString typeName,
NameString fieldName,
Func <IResolverContext, Task <TResult> > resolver)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (resolver == null)
{
throw new ArgumentNullException(nameof(resolver));
}
return(builder.AddResolver(typeName, fieldName,
async ctx =>
{
Task <TResult> resolverTask = resolver(ctx);
if (resolverTask == null)
{
return default;
}
return await resolverTask.ConfigureAwait(false);
}));
}
private static ISchemaBuilder AddResolverInternal(
ISchemaBuilder builder,
NameString typeName,
NameString fieldName,
FieldResolverDelegate resolver)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
return(builder.AddResolver(
new FieldResolver(typeName, fieldName, resolver)));
}
public static ISchemaBuilder AddResolver <TSchema>(
this ISchemaBuilder builder,
NameString typeName,
NameString fieldName,
FieldResolverDelegate resolver)
where TSchema : ISchema
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
return(builder.AddResolver(
new FieldResolver(typeName, fieldName, resolver)));
}
public static ISchemaBuilder AddResolver <TResult>(
this ISchemaBuilder builder,
NameString typeName,
NameString fieldName,
Func <IResolverContext, TResult> resolver)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (resolver == null)
{
throw new ArgumentNullException(nameof(resolver));
}
return(builder.AddResolver(typeName, fieldName,
ctx => Task.FromResult <object>(resolver(ctx))));
}
public static ISchemaBuilder AddResolver(
this ISchemaBuilder builder,
NameString typeName,
NameString fieldName,
Func <Task <object> > resolver)
{
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
if (resolver == null)
{
throw new ArgumentNullException(nameof(resolver));
}
return(builder.AddResolver(typeName, fieldName,
ctx => resolver()));
}
