Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Objects / Internal / EntityWithChangeTrackerStrategy.cs / 1305376 / EntityWithChangeTrackerStrategy.cs
using System; using System.Collections.Generic; using System.Text; using System.Data.Objects.DataClasses; using System.Diagnostics; namespace System.Data.Objects.Internal { ////// Implementation of the change tracking strategy for entities that support change trackers. /// These are typically entities that implement IEntityWithChangeTracker. /// internal sealed class EntityWithChangeTrackerStrategy : IChangeTrackingStrategy { private IEntityWithChangeTracker _entity; ////// Constructs a strategy object that will cause the change tracker to be set onto the /// given object. /// /// The object onto which a change tracker will be set public EntityWithChangeTrackerStrategy(IEntityWithChangeTracker entity) { _entity = entity; } // See IChangeTrackingStrategy documentation public void SetChangeTracker(IEntityChangeTracker changeTracker) { _entity.SetChangeTracker(changeTracker); } // See IChangeTrackingStrategy documentation public void TakeSnapshot(EntityEntry entry) { if (entry != null && entry.WrappedEntity.RequiresComplexChangeTracking) { entry.TakeSnapshot(true); } } // See IChangeTrackingStrategy documentation public void SetCurrentValue(EntityEntry entry, StateManagerMemberMetadata member, int ordinal, object target, object value) { member.SetValue(target, value); } // See IChangeTrackingStrategy documentation public void UpdateCurrentValueRecord(object value, EntityEntry entry) { // Has change tracker, but may or may not be a proxy bool isProxy = entry.WrappedEntity.IdentityType != _entity.GetType(); entry.UpdateRecordWithoutSetModified(value, entry.CurrentValues); if (isProxy) { entry.DetectChangesInProperties(true); // detect only complex property changes } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. // Copyright (c) Microsoft Corporation. All rights reserved.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- PeerNameRecord.cs
- RSAPKCS1KeyExchangeFormatter.cs
- Profiler.cs
- MenuBindingsEditorForm.cs
- COM2IDispatchConverter.cs
- QilValidationVisitor.cs
- BinaryExpressionHelper.cs
- Parser.cs
- BufferedGraphicsContext.cs
- DataControlFieldsEditor.cs
- NoClickablePointException.cs
- ContentHostHelper.cs
- PerspectiveCamera.cs
- MimeXmlReflector.cs
- CodeTypeDelegate.cs
- webeventbuffer.cs
- SqlVisitor.cs
- OdbcPermission.cs
- RelatedView.cs
- Repeater.cs
- ArrayWithOffset.cs
- RelationshipDetailsRow.cs
- FormsAuthentication.cs
- StringHelper.cs
- WindowInteropHelper.cs
- SurrogateSelector.cs
- OuterGlowBitmapEffect.cs
- FileCodeGroup.cs
- SessionParameter.cs
- ServiceModelInstallComponent.cs
- RegexCompilationInfo.cs
- _BasicClient.cs
- ScriptReference.cs
- Point3DAnimationBase.cs
- DataGridViewToolTip.cs
- UITypeEditor.cs
- Buffer.cs
- TogglePattern.cs
- DrawTreeNodeEventArgs.cs
- DBAsyncResult.cs
- SerializationHelper.cs
- XamlToRtfParser.cs
- HtmlMeta.cs
- DecodeHelper.cs
- WebBrowserNavigatingEventHandler.cs
- InputMethodStateChangeEventArgs.cs
- RepeatBehaviorConverter.cs
- ListBindingConverter.cs
- EncoderParameters.cs
- UriTemplateMatchException.cs
- StringUtil.cs
- PasswordTextNavigator.cs
- JsonStringDataContract.cs
- FontStretchConverter.cs
- SerializationSectionGroup.cs
- DesignerCatalogPartChrome.cs
- Misc.cs
- DataViewListener.cs
- SpellerHighlightLayer.cs
- SafeNativeMethods.cs
- SoapSchemaImporter.cs
- Evaluator.cs
- Component.cs
- QilSortKey.cs
- Attributes.cs
- Timer.cs
- BidPrivateBase.cs
- VirtualDirectoryMappingCollection.cs
- HMACSHA1.cs
- FormViewInsertEventArgs.cs
- AsymmetricKeyExchangeDeformatter.cs
- DbReferenceCollection.cs
- X509Certificate2Collection.cs
- AmbientLight.cs
- XhtmlBasicLiteralTextAdapter.cs
- UriExt.cs
- Type.cs
- SiteMap.cs
- util.cs
- QueryFunctions.cs
- LineUtil.cs
- CatalogPartCollection.cs
- ConnectionConsumerAttribute.cs
- DetailsViewRowCollection.cs
- DesignerOptionService.cs
- BindingNavigator.cs
- UnsafeMethods.cs
- DesignTimeParseData.cs
- EventsTab.cs
- DataGridViewRowHeightInfoNeededEventArgs.cs
- BuilderInfo.cs
- CheckPair.cs
- TypeUsage.cs
- ItemCollection.cs
- Clause.cs
- InputBindingCollection.cs
- Point3DCollection.cs
- NumericUpDown.cs
- DtdParser.cs
- HtmlForm.cs