/// <summary>
/// Initializes a new instance of the <see cref="ResolveFieldContext"/> class.
/// </summary>
/// <param name="fieldName">Name of the field.</param>
/// <param name="fieldAst">The field ast.</param>
/// <param name="fieldDefinition">The field definition.</param>
/// <param name="returnType">Type of the return.</param>
/// <param name="parentType">Type of the parent.</param>
/// <param name="arguments">The arguments.</param>
/// <param name="rootValue">The root value.</param>
/// <param name="source">The source.</param>
/// <param name="schema">The schema.</param>
/// <param name="operation">The operation.</param>
/// <param name="fragments">The fragments.</param>
/// <param name="variables">The variables.</param>
/// <param name="cancellationToken">The cancellation token.</param>
/// <param name="userContext">The user context.</param>
public ResolveFieldContext(
string fieldName,
Field fieldAst,
FieldType fieldDefinition,
GraphType returnType,
ObjectGraphType parentType,
IReadOnlyDictionary<string, object> arguments,
object rootValue,
object source,
ISchema schema,
Operation operation,
IEnumerable<IFragment> fragments,
IEnumerable<Variable> variables,
CancellationToken cancellationToken,
object userContext)
{
FieldName = fieldName;
FieldAst = fieldAst;
FieldDefinition = fieldDefinition;
ReturnType = returnType;
ParentType = parentType;
Arguments = arguments;
RootValue = rootValue;
Source = source;
Schema = schema;
Operation = operation;
Fragments = fragments;
Variables = variables;
CancellationToken = cancellationToken;
UserContext = userContext;
}
public static void Field(
this IObjectGraphType obj,
string name,
IGraphType type,
string description = null,
QueryArguments arguments = null,
Func <ResolveFieldContext, object> resolve = null)
{
var field = new GraphQLFieldType();
field.Name = name;
field.Description = description;
field.Arguments = arguments;
field.ResolvedType = type;
field.Resolver = resolve != null ? new FuncFieldResolver <object>(resolve) : null;
obj.AddField(field);
}
public async Task resolve_should_work_with_properties_and_methods(string name, object expected, bool throws = false)
{
var person = new Person
{
Age = 20,
Name = "Anyone"
};
var services = new ServiceCollection();
services.AddSingleton(new Class1());
Func <ValueTask <object> > result = () => NameFieldResolver.Instance.ResolveAsync(
new ResolveFieldContext
{
Source = person,
FieldDefinition = new GraphQL.Types.FieldType {
Name = name
},
FieldAst = new GraphQLField {
Name = name == null ? default : new GraphQLName(name)
},
public string PrintArgs(FieldType field)
{
if (field.Arguments == null || !field.Arguments.Any())
{
return string.Empty;
}
return "({0})".ToFormat(string.Join(", ", field.Arguments.Select(PrintInputValue)));
}
public string PrintInputValue(FieldType argument)
{
var argumentType = Schema.FindType(argument.Type);
var desc = "{0}: {1}".ToFormat(argument.Name, ResolveName(argumentType));
if (argument.DefaultValue != null)
{
desc += " = ".ToFormat(FormatDefaultValue(argument.DefaultValue));
}
return desc;
}
public static void Field(
this IObjectGraphType obj,
string name,
IGraphType type,
string description = null,
QueryArguments arguments = null,
Func<ResolveFieldContext, object> resolve = null)
{
var field = new FieldType();
field.Name = name;
field.Description = description;
field.Arguments = arguments;
field.ResolvedType = type;
field.Resolver = resolve != null ? new FuncFieldResolver<object>(resolve) : null;
obj.AddField(field);
}
private void BuildGraphField(Field field)
{
Type graphQLType;
var f = _entityService.GetTypes().FirstOrDefault(x => x.TypeName == field.Type);
if (f?.GraphType == FieldGraphType.Relation)
{
var collectionName = field.Options["Collection"].Value <string>();
var fieldType = _query.Fields.FirstOrDefault(x => x.Name == collectionName);
if (fieldType == null)
{
//Add related collection not registred on schema
var relatedObject = _entityService.GetCollectionSchemas().FirstOrDefault(x => x.CollectionName == collectionName);
var type = new JObjectRawType(_query, _graphQLService, relatedObject, _entityService);
var listType = new ListGraphType(type);
fieldType = new FieldType
{
Name = collectionName,
Type = listType.GetType(),
ResolvedType = listType,
Resolver = new JObjectFieldResolver(_graphQLService, _entityService),
Arguments = new QueryArguments(
type.TableArgs
)
};
_query.AddField(fieldType);
}
var subType = fieldType.GetType();
var subresolvedType = fieldType.ResolvedType;
//if (!field.Options["Multiple"].Value<bool>())
//{
// var relatedObject = _entityService.GetCollectionSchemas().FirstOrDefault(x => x.CollectionName == collectionName);
// subresolvedType = new JObjectRawType(_query, _graphQLService, relatedObject, _entityService);
// subType = subresolvedType.GetType();
//}
var subField = new FieldType
{
Name = fieldType.Name,
Type = subType,
ResolvedType = subresolvedType,
Resolver = new NameFieldResolver(),
Arguments = fieldType.Arguments
};
AddField(subField);
foreach (var arg in fieldType.Arguments.Where(x => !(new string[] { "pageNumber", "pageSize", "rawQuery", "_id" }.Contains(x.Name))).ToList())
{
arg.Name = $"{collectionName}_{arg.Name}";
TableArgs.Add(arg);
}
}
else
{
//graphQLType = (ResolveFieldMetaType(field.BaseType)).GetGraphTypeFromType(!field.Required);
graphQLType = (ResolveFieldMetaType(f?.GraphType ?? FieldGraphType.String)).GetGraphTypeFromType(true);
FieldType columnField = Field(
graphQLType,
field.Name);
columnField.Resolver = new NameFieldResolver();
FillArgs(field.Name, graphQLType);
}
}
private void HandleField(IComplexGraphType parentType, FieldType field, TypeCollectionContext context, bool applyNameConverter)
{
// applyNameConverter will be false while processing the three root introspection query fields: __schema, __type, and __typename
//
// During processing of those three root fields, the NameConverter will be set to the schema's selected NameConverter,
// and the field names must not be processed by the NameConverter
//
// For other introspection types and fields, the NameConverter will be set to CamelCaseNameConverter at the time this
// code executes, and applyNameConverter will be true
//
// For any other fields, the NameConverter will be set to the schema's selected NameConverter at the time this code
// executes, and applyNameConverter will be true
if (applyNameConverter)
{
field.Name = _nameConverter.NameForField(field.Name, parentType);
NameValidator.ValidateNameOnSchemaInitialize(field.Name, NamedElement.Field);
}
if (field.ResolvedType == null)
{
if (field.Type == null)
{
throw new InvalidOperationException($"Both ResolvedType and Type properties on field '{parentType?.Name}.{field.Name}' are null.");
}
object typeOrError = RebuildType(field.Type, parentType is IInputObjectGraphType, context.TypeMappings);
if (typeOrError is string error)
{
throw new InvalidOperationException($"The GraphQL type for field '{parentType.Name}.{field.Name}' could not be derived implicitly. " + error);
}
field.Type = (Type)typeOrError;
AddTypeIfNotRegistered(field.Type, context);
field.ResolvedType = BuildNamedType(field.Type, context.ResolveType);
}
else
{
AddTypeIfNotRegistered(field.ResolvedType, context);
}
if (field.Arguments?.Count > 0)
{
foreach (var arg in field.Arguments.List)
{
if (applyNameConverter)
{
arg.Name = _nameConverter.NameForArgument(arg.Name, parentType, field);
NameValidator.ValidateNameOnSchemaInitialize(arg.Name, NamedElement.Argument);
}
if (arg.ResolvedType != null)
{
AddTypeIfNotRegistered(arg.ResolvedType, context);
continue;
}
AddTypeIfNotRegistered(arg.Type, context);
arg.ResolvedType = BuildNamedType(arg.Type, context.ResolveType);
}
}
}
