Yaojian, Thanks! I am still confused though. When I make a call to QueryForObject and reset the IsLoading flag to false, that only sets it false for the root object. All complex property collections that are loaded at the same time will not be reset. Am I missing something obvious?
________________________________ > Date: Fri, 29 May 2009 03:52:58 +0800 > Subject: Re: Dirty Tracking Issue > From: [email protected] > To: [email protected] > > If the non-root object is loaded from the database, it should be created with > the new object factory. > otherwise, it is irrelavant with 'dirty'. > > Bellow is my code for using IObjectFactory, I use a custom IObjectFactory for > attaching each object to a context variable. > > > > DomSqlMapBuilder builder = CreateDomSqlMapBuilder(); > > //Use SqmObjectFactory for attaching objects to the current IObjectContext > IObjectFactory originalFactory = new ObjectFactory(true); > > SqmObjectFactory contextableFactory = new SqmObjectFactory(originalFactory); > builder.ObjectFactory = contextableFactory; > > ISqlMapper sqlMapper = builder.Configure(m_SqlMapDocument); > > > -------------------------------------------------------------------------------------------------------------------------------------------------- > > /// Represents the factory of MDA persistent object used by IBatis.NET. > > /// attaches an > /// to each objects created with this factory. > public class SqmObjectFactory : IObjectFactory, IEntityContextBindable > > { > /// Creates an instance. > /// The original . > public SqmObjectFactory(IObjectFactory objectFactoryImpl) > > { > if (objectFactoryImpl == null) throw new > ArgumentNullException("objectFactoryImpl"); > m_ObjectFactoryImpl = objectFactoryImpl; > } > > private readonly IObjectFactory m_ObjectFactoryImpl; > > > private IEntityContext m_EntityContext; > > public IEntityContext EntityContext > { > get { return m_EntityContext; } > set { m_EntityContext = value; } > } > > > /// . > public IFactory CreateFactory(Type typeToCreate, Type[] types) > { > IFactory result = m_ObjectFactoryImpl.CreateFactory(typeToCreate, types); > > if (typeof(IEntityContextBindable).IsAssignableFrom(typeToCreate)) > { > return new SqmFactory(this, result); > } > return result; > } > > private class SqmFactory : IFactory > > { > public SqmFactory(IEntityContextBindable objectContextable, IFactory factory) > { > if (objectContextable == null) throw new > ArgumentNullException("objectContextable"); > > if (factory == null) throw new ArgumentNullException("factory"); > > m_ObjectContextable = objectContextable; > m_Factory = factory; > } > > private readonly IEntityContextBindable m_ObjectContextable; > > > private readonly IFactory m_Factory; > > public object CreateInstance(object[] parameters) > { > Object result = m_Factory.CreateInstance(parameters); > ((IEntityContextBindable)result).EntityContext = > m_ObjectContextable.EntityContext; > > return result; > } > } > } > > > On Fri, May 29, 2009 at 3:45 AM, Sal Bass> wrote: > > > > Yes, I explored that. But how will that work for the complex properties? Only > the root object would know it's in a loading state. > > > > > > ________________________________ > >> Date: Fri, 29 May 2009 02:22:33 +0800 > >> Subject: Re: Dirty Tracking Issue > >> From: [email protected] > >> To: [email protected] > >> > >> We can bypass to set 'dirty' if the AOP generation mechanism can know an >> object is in 'loading' state. > >> > >> We can use a custom IBatisNet.Common.Utilities.IObjectFactory to mark an >> object 'loading'. > >> > >> And we can use a wrapped ISqlMapper to clean the 'loading' flag as: > >> > >> public object QueryForObject(string statementName, object parameterObject) { > >> Object result = originalSqlMapper.QueryForObject(...); > >> > >> result.IsLoading = false; > >> return result; > >> } > >> > >> > >> Yaojian > >> > >> On Fri, May 29, 2009 at 1:55 AM, Sal Bass> wrote: > >> > >> > >> > >> I am having a dilema with implementing dirty tracking on my entities. I am >> using AOP to mark an entity as "dirty" when a property is set. The problem >> occurs when I load the entities using Ibatis because it sets the properties >> during mapping which makes the entity dirty (no, I can't use constructor >> mapping here). So, I use a RowDelegate to mark the entity clean before >> returning it. Works great....except for when I am loading a root object with >> several complex properties (ILists of other entities). The RowDelegate is >> obviously not fired for each complex property, so they are returned as dirty. > > >> > >> > >> > >> > >> Any idea of how I can get at all of the complex properties to mark them >> clean before returning the entity? > >> > >> > >> > >> > >> > >> > >> > >> _________________________________________________________________ > >> > >> Hotmail® goes with you. > >> > >> http://windowslive.com/Tutorial/Hotmail/Mobile?ocid=TXT_TAGLM_WL_HM_Tutorial_Mobile1_052009 > > >> > >> > > _________________________________________________________________ > > Windows Live™: Keep your life in sync. > > http://windowslive.com/explore?ocid=TXT_TAGLM_BR_life_in_synch_052009 > _________________________________________________________________ Insert movie times and more without leaving Hotmail®. http://windowslive.com/Tutorial/Hotmail/QuickAdd?ocid=TXT_TAGLM_WL_HM_Tutorial_QuickAdd1_052009
