internal static FieldType CreateFieldType <TResolvedType>(LiteralGraphTypeMemberInfo member)
where TResolvedType : IGraphType, new()
{
return(new FieldType
{
Name = member.Name,
Type = typeof(TResolvedType),
Resolver = CreateFieldResolverFor(member)
});
}
internal static FieldTypeResolver MakeFieldTypeResolverForMember(LiteralGraphTypeMemberInfo member, FieldTypeResolver complexFieldTypeResolver)
{
var type = member.Type;
if (type == LiteralGraphTypeMemberInfoType.Complex)
{
return(complexFieldTypeResolver);
}
LiteralGraphTypeMemberInfoFieldTypeResolverMappings.TryGetValue(type, out var resolver);
return(resolver);
}
internal static FieldTypeResolver GetFieldTypeResolverForMember(LiteralGraphTypeMemberInfo member, FieldTypeResolver complexFieldTypeResolver)
{
var memberFieldTypeResolverMapKey = MakeMemberFieldTypeResolverMapKey(member);
// If we don't already know the fieldtype resolver for this member, we need to figure it out
if (!MemberFieldTypeResolverMappings.TryGetValue(memberFieldTypeResolverMapKey, out var fieldTypeResolver) || fieldTypeResolver == null)
{
// Try to create a new field type resolver
fieldTypeResolver = MakeFieldTypeResolverForMember(member, complexFieldTypeResolver);
if (fieldTypeResolver == null)
{
return(null);
}
// Save the resolver
MemberFieldTypeResolverMappings.AddOrUpdate(memberFieldTypeResolverMapKey, fieldTypeResolver, (m, old) => fieldTypeResolver);
}
return(fieldTypeResolver);
}
internal static FieldType GetFieldTypeForMember(LiteralGraphTypeMemberInfo member, FieldTypeResolver complexFieldTypeResolver)
{
var memberFieldTypeMapKey = MakeMemberFieldTypeMapKey(member);
// Try to find an existing FieldType for this member
if (!MemberFieldTypeMappings.TryGetValue(memberFieldTypeMapKey, out var fieldType))
{
// Throw a new FieldType in to indicate we're in the middle of resolving a FieldType
fieldType = new FieldType();
MemberFieldTypeMappings.AddOrUpdate(memberFieldTypeMapKey, fieldType, (m, old) => fieldType);
// Get the fieldtype resolver
var fieldTypeResolver = GetFieldTypeResolverForMember(member, complexFieldTypeResolver);
// Execute the resolver
var actualFieldType = fieldTypeResolver(member);
// Copy over fields
PatchFieldType(fieldType, actualFieldType);
}
return(fieldType);
}
internal static IFieldResolver CreateFieldResolverFor(LiteralGraphTypeMemberInfo member)
{
return(new FuncFieldResolver <object>(ctx => member.GetValueFn(ctx)));
}
private static string MakeMemberFieldTypeMapKey(LiteralGraphTypeMemberInfo member) => $"{member.DeclaringTypeName}.{member.Name}";
internal static string MakeMemberFieldTypeResolverMapKey(LiteralGraphTypeMemberInfo member) => $"{member.DeclaringTypeName}.{member.Name}";
