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QueryResultBuilder.cs
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QueryResultBuilder.cs
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using System;
using System.Collections.Generic;
using System.Threading.Tasks;
#nullable enable
namespace HotChocolate.Execution;
public class QueryResultBuilder : IQueryResultBuilder
{
private IReadOnlyDictionary<string, object?>? _data;
private IReadOnlyList<object?>? _items;
private List<IError>? _errors;
private ExtensionData? _extensionData;
private ExtensionData? _contextData;
private List<IQueryResult>? _incremental;
private string? _label;
private Path? _path;
private bool? _hasNext;
private Func<ValueTask>[] _cleanupTasks = Array.Empty<Func<ValueTask>>();
public IQueryResultBuilder SetData(IReadOnlyDictionary<string, object?>? data)
{
_data = data;
_items = null;
return this;
}
public IQueryResultBuilder SetItems(IReadOnlyList<object?>? items)
{
_items = items;
if (items is not null)
{
_data = null;
}
return this;
}
public IQueryResultBuilder AddError(IError error)
{
if (error is null)
{
throw new ArgumentNullException(nameof(error));
}
_errors ??= new List<IError>();
_errors.Add(error);
return this;
}
public IQueryResultBuilder AddErrors(IEnumerable<IError> errors)
{
if (errors is null)
{
throw new ArgumentNullException(nameof(errors));
}
_errors ??= new List<IError>();
_errors.AddRange(errors);
return this;
}
public IQueryResultBuilder AddExtension(string key, object? data)
{
_extensionData ??= new ExtensionData();
_extensionData.Add(key, data);
return this;
}
public IQueryResultBuilder SetExtension(string key, object? data)
{
_extensionData ??= new ExtensionData();
_extensionData[key] = data;
return this;
}
public IQueryResultBuilder SetExtensions(IReadOnlyDictionary<string, object?>? extensions)
{
if (extensions is ExtensionData extensionData)
{
_extensionData = extensionData;
}
else if (extensions is not null)
{
_extensionData = new ExtensionData(extensions);
}
else
{
_extensionData = null;
}
return this;
}
public IQueryResultBuilder AddContextData(string key, object? data)
{
_contextData ??= new ExtensionData();
_contextData.Add(key, data);
return this;
}
public IQueryResultBuilder SetContextData(string key, object? data)
{
_contextData ??= new ExtensionData();
_contextData[key] = data;
return this;
}
public IQueryResultBuilder SetContextData(IReadOnlyDictionary<string, object?>? contextData)
{
if (contextData is ExtensionData extensionData)
{
_contextData = extensionData;
}
else if (contextData is not null)
{
_contextData = new ExtensionData(contextData);
}
else
{
_contextData = null;
}
return this;
}
public IQueryResultBuilder AddPatch(IQueryResult patch)
{
if (patch is null)
{
throw new ArgumentNullException(nameof(patch));
}
_incremental ??= new List<IQueryResult>();
_incremental.Add(patch);
return this;
}
public IQueryResultBuilder SetLabel(string? label)
{
_label = label;
return this;
}
public IQueryResultBuilder SetPath(Path? path)
{
_path = path;
return this;
}
public IQueryResultBuilder SetHasNext(bool? hasNext)
{
_hasNext = hasNext;
return this;
}
public IQueryResultBuilder RegisterForCleanup(Func<ValueTask> clean)
{
if (clean is null)
{
throw new ArgumentNullException(nameof(clean));
}
var index = _cleanupTasks.Length;
Array.Resize(ref _cleanupTasks, index + 1);
_cleanupTasks[index] = clean;
return this;
}
public IQueryResult Create()
=> new QueryResult(
_data,
_errors?.Count > 0 ? _errors : null,
_extensionData?.Count > 0 ? _extensionData : null,
_contextData?.Count > 0 ? _contextData : null,
_items,
_incremental,
_label,
_path,
_hasNext,
_cleanupTasks);
public static QueryResultBuilder New() => new();
public static QueryResultBuilder FromResult(IQueryResult result)
{
var builder = new QueryResultBuilder { _data = result.Data };
if (result.Errors is not null)
{
builder._errors = new List<IError>(result.Errors);
}
if (result.Extensions is ExtensionData d)
{
builder._extensionData = new ExtensionData(d);
}
else if (result.Extensions is not null)
{
builder._extensionData = new ExtensionData(result.Extensions);
}
if (result.ContextData is ExtensionData cd)
{
builder._contextData = new ExtensionData(cd);
}
else if (result.ContextData is not null)
{
builder._contextData = new ExtensionData(result.ContextData);
}
return builder;
}
public static IQueryResult CreateError(
IError error,
IReadOnlyDictionary<string, object?>? contextData = null)
=> error is AggregateError aggregateError
? CreateError(aggregateError.Errors, contextData)
: new QueryResult(null, new List<IError> { error }, contextData: contextData);
public static IQueryResult CreateError(
IReadOnlyList<IError> errors,
IReadOnlyDictionary<string, object?>? contextData = null)
=> new QueryResult(null, errors, contextData: contextData);
}