public static IReadOnlyDictionary <string, object> CoerceArgumentValues(
ISchema schema,
ObjectType objectType,
GraphQLFieldSelection field,
IReadOnlyDictionary <string, object> coercedVariableValues)
{
var coercedValues = new Dictionary <string, object>();
var argumentValues = field.Arguments?.ToList() ?? new List <GraphQLArgument>();
var fieldName = field.Name.Value;
var argumentDefinitions = schema.GetField(objectType.Name, fieldName).Arguments;
if (argumentDefinitions == null)
{
return(coercedValues);
}
foreach (var argumentDefinitionPair in argumentDefinitions)
{
var argumentDefinition = argumentDefinitionPair.Value;
var argumentName = argumentDefinitionPair.Key;
var argument = argumentValues.SingleOrDefault(a => a.Name.Value == argumentName);
coercedValues[argumentName] = CoerceArgumentValue(
schema,
coercedVariableValues,
argumentName,
argumentDefinition,
argument);
}
return(coercedValues);
}
public void GetField()
{
/* Given */
var namedTypeName = Schema.Query.Name;
/* When */
var field = Schema.GetField(namedTypeName, "name");
/* Then */
Assert.NotNull(field);
Assert.Same(ScalarType.String, field.Type);
}
public TypeTracker(ISchema schema)
{
EnterOperationDefinition = node =>
{
var root = node.Operation switch
{
OperationType.Query => schema.Query,
OperationType.Mutation => schema.Mutation,
OperationType.Subscription => schema.Subscription,
_ => throw new ArgumentOutOfRangeException()
};
Types.Push(root);
};
LeaveOperationDefinition = node => { Types.TryPop(out _); };
EnterSelectionSet = node => { ParentTypes.Push(CurrentType); };
LeaveSelectionSet = node => { ParentTypes.TryPop(out _); };
EnterFieldSelection = node =>
{
if (ParentType is not null)
{
var fieldDefinition = schema.GetField(ParentType.Name, node.Name);
FieldDefinitions.Push(fieldDefinition ?? null);
if (fieldDefinition?.Type is not null)
{
var fieldTypeDefinition = Ast.UnwrapAndResolveType(schema, fieldDefinition.Type);
if (fieldTypeDefinition is not null && TypeIs.IsOutputType(fieldTypeDefinition))
{
Types.Push(fieldTypeDefinition);
}
else
{
Types.Push(null);
}
}
else
{
Types.Push(null);
}
}
private IRecord GetRecordFromTableRow(IRecordType recordType, object[] row, ISchema schema)
{
IRecord record = new Record(recordType);
foreach (var field in recordType.Fields)
{
var column = schema.GetField(field.Name);
if (column != null && column.Type == field.Type.UnterlyingDotNetType)
{
int fieldPosition = schema.GetFieldPosition(field.Name);
IValue value = new TypedValue(field.Type, row[fieldPosition]);
record.SetFieldValue(field.Name, value);
}
}
return(record);
}
public static Dictionary <string, object> CoerceArgumentValues(
ISchema schema,
ObjectType objectType,
GraphQLFieldSelection field,
Dictionary <string, object> coercedVariableValues)
{
var coercedValues = new Dictionary <string, object>();
var argumentValues = field.Arguments?.ToList() ?? new List <GraphQLArgument>();
var fieldName = field.Name.Value;
var argumentDefinitions = schema.GetField(objectType.Name, fieldName).Arguments;
if (argumentDefinitions == null)
{
return(coercedValues);
}
foreach (var argumentDefinitionPair in argumentDefinitions)
{
var argumentDefinition = argumentDefinitionPair.Value;
var argumentName = argumentDefinitionPair.Key;
var argumentType = argumentDefinition.Type;
var defaultValue = argumentDefinition.DefaultValue;
var argument = argumentValues.SingleOrDefault(a => a.Name.Value == argumentName);
var argumentValue = argument?.Value;
var hasValue = argumentValue != null;
object value = null;
if (argumentValue is GraphQLVariable variable)
{
var variableName = variable.Name.Value;
hasValue = coercedVariableValues.ContainsKey(variableName);
if (hasValue)
{
value = coercedVariableValues[variableName];
}
}
else
{
value = argumentValue;
}
if (!hasValue)
{
coercedValues[argumentName] = defaultValue;
}
if (argumentType is NonNull && (!hasValue || value == null))
{
throw new ValueCoercionException(
$"Argument {argumentName} is non-null but no value could be coerced",
null,
argumentType);
}
if (hasValue)
{
if (value == null)
{
coercedValues[argumentName] = null;
}
else if (argumentValue is GraphQLVariable)
{
coercedValues[argumentName] = value;
}
else
{
var coercedValue = Values.CoerceValue(
schema.GetInputFields,
value,
argumentType);
coercedValues[argumentName] = coercedValue;
}
}
}
return(coercedValues);
}
public static FieldDefinition GetRequiredField(this ISchema schema, string type, string fieldName)
{
return(schema.GetField(type, fieldName) ??
throw new ArgumentOutOfRangeException(nameof(fieldName),
$"Schema does not contain a field '{type}.{fieldName}'."));
}