EllanJiang/GameFramework · error · GameFrameworkException

Owner is invalid.

Error message

Owner is invalid.

What it means

DataProviderCreator.Create<T>() throws GameFrameworkException('Owner is invalid.') when the owner argument passed to create a new DataProvider<T> is null. The owner is the object the data provider will belong to, and a null owner would make the provider unusable, so the factory rejects it eagerly. This is a fail-fast argument validation at the very start of Create.

Solutions

1. Pass a non-null owner instance to Create<T>, e.g. the game object/component that will own the data provider
2. Check the owner for null before calling Create and initialize it (in Awake/Start or constructor) if it is lazily assigned
3. Verify any lookup used to obtain the owner (GetComponent, table, service locator) actually succeeded instead of returning null

Example fix

// before
IDataProvider<Player> provider = DataProviderCreator.Create<Player>(null, resourceManager, helper);
// after
if (player == null) { throw new InvalidOperationException("Player owner not initialized"); }
IDataProvider<Player> provider = DataProviderCreator.Create<Player>(player, resourceManager, helper);

if (owner == null) throw new ArgumentNullException(nameof(owner));
DataProviderCreator.Create<T>(owner, resourceManager, helper);

bool IsValidOwner<T>(T owner) => owner != null;

try
{
    var provider = DataProviderCreator.Create<T>(owner, resourceManager, helper);
}
catch (GameFrameworkException ex) when (ex.Message == "Owner is invalid.")
{
    // log and fail fast: owner must be initialized before creating a provider
}

When it happens

Trigger: Calling GameFramework.DataProvider.DataProviderCreator.Create<T>(owner, resourceManager, dataProviderHelper) with owner == null. Typically happens when the caller's own owner field/reference has not been assigned yet (e.g. a component property accessed before initialization) or a static owner variable is still null.

Common situations: Calling Create from a script whose MonoBehaviour/owner reference is not yet wired in Awake; passing the result of a lookup (GetComponent, dictionary) that returned null; refactoring changed initialization order so Create runs before the owner is assigned.

Related errors

• Data provider helper is invalid.
• Resource manager is invalid.
• Type is invalid.
• Event is invalid.
• Data row type is invalid.

AI-assisted analysis of EllanJiang/GameFramework@d0c010b051 (2026-09-15). Data as JSON: /api/errors/baff0e94f3c474af. Report an issue: GitHub.

Appendix: source

Thrown at GameFramework/Base/DataProvider/DataProviderCreator.cs:58

        /// <typeparam name="T">数据提供者的持有者的类型。</typeparam>
        public static void FreeCachedBytes<T>()
        {
            DataProvider<T>.FreeCachedBytes();
        }

        /// <summary>
        /// 创建数据提供者。
        /// </summary>
        /// <typeparam name="T">数据提供者的持有者的类型。</typeparam>
        /// <param name="owner">数据提供者的持有者。</param>
        /// <param name="resourceManager">资源管理器。</param>
        /// <param name="dataProviderHelper">数据提供者辅助器。</param>
        /// <returns>创建的数据提供者。</returns>
        public static IDataProvider<T> Create<T>(T owner, IResourceManager resourceManager, IDataProviderHelper<T> dataProviderHelper)
        {
            if (owner == null)
            {
                throw new GameFrameworkException("Owner is invalid.");
            }

            if (resourceManager == null)
            {
                throw new GameFrameworkException("Resource manager is invalid.");
            }

            if (dataProviderHelper == null)
            {
                throw new GameFrameworkException("Data provider helper is invalid.");
            }

            DataProvider<T> dataProvider = new DataProvider<T>(owner);
            dataProvider.SetResourceManager(resourceManager);
            dataProvider.SetDataProviderHelper(dataProviderHelper);
            return dataProvider;
        }
    }

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