public static void SetArrayItemNodes(ExecutionContext context, ArrayExecutionNode parent)
{
var listType = (ListGraphType)parent.GraphType;
var itemType = listType.ResolvedType;
if (itemType is NonNullGraphType nonNullGraphType)
{
itemType = nonNullGraphType.ResolvedType;
}
if (!(parent.Result is IEnumerable data))
{
var error = new ExecutionError("User error: expected an IEnumerable list though did not find one.");
throw error;
}
var index = 0;
var arrayItems = (data is ICollection collection)
? new List <ExecutionNode>(collection.Count)
: new List <ExecutionNode>();
foreach (var d in data)
{
var path = AppendPath(parent.Path, (index++).ToString());
if (d != null)
{
var node = BuildExecutionNode(parent, itemType, parent.Field, parent.FieldDefinition, path);
node.Result = d;
if (node is ObjectExecutionNode objectNode)
{
SetSubFieldNodes(context, objectNode);
}
arrayItems.Add(node);
}
else
{
var valueExecutionNode = new ValueExecutionNode(parent, itemType, parent.Field, parent.FieldDefinition, path)
{
Result = null
};
arrayItems.Add(valueExecutionNode);
}
}
parent.Items = arrayItems;
}
public static void SetArrayItemNodes(ExecutionContext context, ArrayExecutionNode parent)
{
var listType = (ListGraphType)parent.GraphType;
var itemType = listType.ResolvedType;
if (itemType is NonNullGraphType nonNullGraphType)
{
itemType = nonNullGraphType.ResolvedType;
}
if (!(parent.Result is IEnumerable data))
{
var error = new ExecutionError("User error: expected an IEnumerable list though did not find one.");
throw error;
}
var index = 0;
var arrayItems = (data is ICollection collection)
? new List <ExecutionNode>(collection.Count)
: new List <ExecutionNode>();
foreach (var d in data)
{
if (d != null)
{
var node = BuildExecutionNode(parent, itemType, parent.Field, parent.FieldDefinition, index++);
node.Result = d;
if (node is ObjectExecutionNode objectNode)
{
SetSubFieldNodes(context, objectNode);
}
else if (node is ArrayExecutionNode arrayNode)
{
SetArrayItemNodes(context, arrayNode);
}
arrayItems.Add(node);
}
else
{
if (listType.ResolvedType is NonNullGraphType)
{
var error = new ExecutionError(
"Cannot return null for non-null type."
+ $" Field: {parent.Name}, Type: {parent.FieldDefinition.ResolvedType}.");
error.AddLocation(parent.Field, context.Document);
error.Path = parent.Path.Append(index);
context.Errors.Add(error);
return;
}
var valueExecutionNode = new ValueExecutionNode(parent, itemType, parent.Field, parent.FieldDefinition, index++)
{
Result = null
};
arrayItems.Add(valueExecutionNode);
}
}
parent.Items = arrayItems;
}