Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Map / Update / Internal / ExtractedStateEntry.cs / 1305376 / ExtractedStateEntry.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Data.Common.CommandTrees; using System.Data.Metadata.Edm; using System.Diagnostics; using System.Linq; namespace System.Data.Mapping.Update.Internal { ////// Represents the data contained in a StateEntry using internal data structures /// of the UpdatePipeline. /// internal struct ExtractedStateEntry { internal readonly EntityState State; internal readonly PropagatorResult Original; internal readonly PropagatorResult Current; internal readonly IEntityStateEntry Source; internal ExtractedStateEntry(UpdateTranslator translator, IEntityStateEntry stateEntry) { Debug.Assert(null != stateEntry, "stateEntry must not be null"); this.State = stateEntry.State; this.Source = stateEntry; switch (stateEntry.State) { case EntityState.Deleted: this.Original = translator.RecordConverter.ConvertOriginalValuesToPropagatorResult( stateEntry, ModifiedPropertiesBehavior.AllModified); this.Current = null; break; case EntityState.Unchanged: this.Original = translator.RecordConverter.ConvertOriginalValuesToPropagatorResult( stateEntry, ModifiedPropertiesBehavior.NoneModified); this.Current = translator.RecordConverter.ConvertCurrentValuesToPropagatorResult( stateEntry, ModifiedPropertiesBehavior.NoneModified); break; case EntityState.Modified: this.Original = translator.RecordConverter.ConvertOriginalValuesToPropagatorResult( stateEntry, ModifiedPropertiesBehavior.SomeModified); this.Current = translator.RecordConverter.ConvertCurrentValuesToPropagatorResult( stateEntry, ModifiedPropertiesBehavior.SomeModified); break; case EntityState.Added: this.Original = null; this.Current = translator.RecordConverter.ConvertCurrentValuesToPropagatorResult( stateEntry, ModifiedPropertiesBehavior.AllModified); break; default: Debug.Fail("unexpected IEntityStateEntry.State for entity " + stateEntry.State); this.Original = null; this.Current = null; break; } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
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