private void CompleteFieldResolverBindungs(
ResolverCollectionBindingInfo resolverCollectionBinding,
ObjectTypeBinding typeBinding,
IEnumerable <FieldResolverBindungInfo> fieldResolverBindings)
{
foreach (FieldResolverBindungInfo binding in
fieldResolverBindings)
{
if (binding.FieldMember == null && binding.FieldName == null)
{
binding.FieldMember = binding.ResolverMember;
}
if (binding.FieldMember == null && typeBinding != null &&
typeBinding.Fields.TryGetValue(
binding.FieldName, out FieldBinding fieldBinding))
{
binding.FieldMember = fieldBinding.Member;
}
if (binding.FieldName == null && typeBinding != null)
{
fieldBinding = typeBinding.Fields.Values
.FirstOrDefault(t => t.Member == binding.FieldMember);
binding.FieldName = fieldBinding?.Name;
}
// todo : error handling
if (binding.FieldName == null)
{
binding.FieldName = binding.FieldMember.GetGraphQLName();
}
}
}
internal BindFieldResolver(
ResolverCollectionBindingInfo bindingInfo,
FieldResolverBindungInfo fieldBindingInfo)
{
_bindingInfo = bindingInfo
?? throw new ArgumentNullException(nameof(bindingInfo));
_fieldBindingInfo = fieldBindingInfo
?? throw new ArgumentNullException(nameof(fieldBindingInfo));
}
internal BoundResolver(ResolverCollectionBindingInfo bindingInfo)
{
if (bindingInfo == null)
{
throw new ArgumentNullException(nameof(bindingInfo));
}
_bindingInfo = bindingInfo;
}
public IBindResolver <TResolver> BindResolver <TResolver>(
BindingBehavior bindingBehavior)
where TResolver : class
{
var bindingInfo =
new ResolverCollectionBindingInfo
{
Behavior = bindingBehavior,
ResolverType = typeof(TResolver)
};
_resolverBindings.Add(bindingInfo);
return(new BindResolver <TResolver>(bindingInfo));
}
private List <IFieldResolverDescriptor> CollectPossibleDescriptors(
ITypeRegistry typeRegistry,
ResolverCollectionBindingInfo resolverBinding)
{
var descriptors = new List <IFieldResolverDescriptor>();
// if implicit resolver discovery is on get all possible
// resolver members from the resolver type.
if (resolverBinding.Behavior == BindingBehavior.Implicit)
{
descriptors.AddRange(FieldResolverDiscoverer.DiscoverResolvers(
resolverBinding.ResolverType,
resolverBinding.ObjectType,
resolverBinding.ObjectTypeName,
m => LookupFieldName(typeRegistry, m)));
}
if (resolverBinding.Fields.Count > 0)
{
ILookup <string, IFieldResolverDescriptor> descriptorLookup =
descriptors.ToLookup(t => t.Field.FieldName);
IEnumerable <FieldMember> selectedResolvers =
resolverBinding.Fields.Select(
t => new FieldMember(
resolverBinding.ObjectTypeName,
t.FieldName, t.ResolverMember)).ToArray();
foreach (IFieldResolverDescriptor explicitDescriptor in
FieldResolverDiscoverer.CreateResolverDescriptors(
resolverBinding.ResolverType,
resolverBinding.ObjectType,
selectedResolvers))
{
// remove implicit declared descriptos for the
// explcitly declared ones.
RemoveDescriptors(descriptors,
descriptorLookup[explicitDescriptor.Field.FieldName]);
// add the explicitly declared descriptor
descriptors.Add(explicitDescriptor);
}
}
return(descriptors);
}
public BindResolver(ResolverCollectionBindingInfo bindingInfo)
{
_bindingInfo = bindingInfo
?? throw new ArgumentNullException(nameof(bindingInfo));
}