public void GetFieldDependencies()
{
// arrange
ISchema schema = Schema.Create(
FileResource.Open("Stitching.graphql"),
c =>
{
c.RegisterType <DateTimeType>();
c.RegisterDirective <DelegateDirectiveType>();
c.Use(next => context => Task.CompletedTask);
});
DocumentNode query = Utf8GraphQLParser.Parse(
FileResource.Open("StitchingQuery.graphql"));
FieldNode selection = query.Definitions
.OfType <OperationDefinitionNode>().Single()
.SelectionSet.Selections
.OfType <FieldNode>().Single();
// act
var fieldDependencyResolver = new FieldDependencyResolver(schema);
ISet <FieldDependency> dependencies = fieldDependencyResolver
.GetFieldDependencies(
query,
selection,
schema.GetType <ObjectType>("Customer"));
// assert
Snapshot.Match(dependencies);
}
public ExtractFieldQuerySyntaxRewriter(
ISchema schema,
IEnumerable <IQueryDelegationRewriter> rewriters)
{
_schema = schema ?? throw new ArgumentNullException(nameof(schema));
_dependencyResolver = new FieldDependencyResolver(schema);
_rewriters = rewriters.ToArray();
}