Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Map / Update / Internal / ChangeNode.cs / 1305376 / ChangeNode.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Data.Metadata.Edm; using System.Collections.Generic; using System.Text; using System.Globalization; namespace System.Data.Mapping.Update.Internal { ////// This class encapsulates changes propagated to a node in an update mapping view. /// It contains lists of deleted and inserted rows. Key intersections betweens rows /// in the two sets are treated as updates in the store. /// ////// internal class ChangeNode { #region Constructors ////// Additional tags indicating the roles of particular values (e.g., concurrency, undefined, /// etc.) are stored within each row: where appropriate, constants appearing /// within a row are associated with a ///through the . /// /// The 'leaves' of an update mapping view (UMV) are extent expressions. A change node /// associated with an extent expression is simply the list of changes to the C-Space /// requested by a caller. As changes propagate 'up' the UMV expression tree, we recursively /// apply transformations such that the change node associated with the root of the UMV /// represents changes to apply in the S-Space. /// ////// Constructs a change node containing changes belonging to the specified collection /// schema definition. /// /// Setsproperty. internal ChangeNode(TypeUsage elementType) { m_elementType = elementType; } #endregion #region Fields private TypeUsage m_elementType; private List m_inserted = new List (); private List m_deleted = new List (); private PropagatorResult m_placeholder; #endregion #region Properties /// /// Gets the type of the rows contained in this node. This type corresponds (not coincidentally) /// to the type of an expression in an update mapping view. /// internal TypeUsage ElementType { get { return m_elementType; } } ////// Gets a list of rows to be inserted. /// internal ListInserted { get { return m_inserted; } } /// /// Gets a list of rows to be deleted. /// internal ListDeleted { get { return m_deleted; } } /// /// Gets or sets a version of a record at this node with default record. The record has the type /// of the node we are visiting. /// internal PropagatorResult Placeholder { get { return m_placeholder; } set { m_placeholder = value; } } #endregion #if DEBUG public override string ToString() { StringBuilder builder = new StringBuilder(); builder.AppendLine("{"); builder.AppendFormat(CultureInfo.InvariantCulture, " ElementType = {0}", ElementType).AppendLine(); builder.AppendLine(" Inserted = {"); foreach (PropagatorResult insert in Inserted) { builder.Append(" ").AppendLine(insert.ToString()); } builder.AppendLine(" }"); builder.AppendLine(" Deleted = {"); foreach (PropagatorResult delete in Deleted) { builder.Append(" ").AppendLine(delete.ToString()); } builder.AppendLine(" }"); builder.AppendFormat(CultureInfo.InvariantCulture, " PlaceHolder = {0}", Placeholder).AppendLine(); builder.Append("}"); return builder.ToString(); } #endif } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Data.Metadata.Edm; using System.Collections.Generic; using System.Text; using System.Globalization; namespace System.Data.Mapping.Update.Internal { ////// This class encapsulates changes propagated to a node in an update mapping view. /// It contains lists of deleted and inserted rows. Key intersections betweens rows /// in the two sets are treated as updates in the store. /// ////// internal class ChangeNode { #region Constructors ////// Additional tags indicating the roles of particular values (e.g., concurrency, undefined, /// etc.) are stored within each row: where appropriate, constants appearing /// within a row are associated with a ///through the . /// /// The 'leaves' of an update mapping view (UMV) are extent expressions. A change node /// associated with an extent expression is simply the list of changes to the C-Space /// requested by a caller. As changes propagate 'up' the UMV expression tree, we recursively /// apply transformations such that the change node associated with the root of the UMV /// represents changes to apply in the S-Space. /// ////// Constructs a change node containing changes belonging to the specified collection /// schema definition. /// /// Setsproperty. internal ChangeNode(TypeUsage elementType) { m_elementType = elementType; } #endregion #region Fields private TypeUsage m_elementType; private List m_inserted = new List (); private List m_deleted = new List (); private PropagatorResult m_placeholder; #endregion #region Properties /// /// Gets the type of the rows contained in this node. This type corresponds (not coincidentally) /// to the type of an expression in an update mapping view. /// internal TypeUsage ElementType { get { return m_elementType; } } ////// Gets a list of rows to be inserted. /// internal ListInserted { get { return m_inserted; } } /// /// Gets a list of rows to be deleted. /// internal ListDeleted { get { return m_deleted; } } /// /// Gets or sets a version of a record at this node with default record. The record has the type /// of the node we are visiting. /// internal PropagatorResult Placeholder { get { return m_placeholder; } set { m_placeholder = value; } } #endregion #if DEBUG public override string ToString() { StringBuilder builder = new StringBuilder(); builder.AppendLine("{"); builder.AppendFormat(CultureInfo.InvariantCulture, " ElementType = {0}", ElementType).AppendLine(); builder.AppendLine(" Inserted = {"); foreach (PropagatorResult insert in Inserted) { builder.Append(" ").AppendLine(insert.ToString()); } builder.AppendLine(" }"); builder.AppendLine(" Deleted = {"); foreach (PropagatorResult delete in Deleted) { builder.Append(" ").AppendLine(delete.ToString()); } builder.AppendLine(" }"); builder.AppendFormat(CultureInfo.InvariantCulture, " PlaceHolder = {0}", Placeholder).AppendLine(); builder.Append("}"); return builder.ToString(); } #endif } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- XmlSyndicationContent.cs
- TextUtf8RawTextWriter.cs
- FrameworkTemplate.cs
- AspCompat.cs
- __Filters.cs
- GrabHandleGlyph.cs
- WorkerRequest.cs
- HotSpot.cs
- DataColumnCollection.cs
- ApplicationSecurityInfo.cs
- XPathDocument.cs
- AsyncWaitHandle.cs
- PageBuildProvider.cs
- TypeResolver.cs
- PropertyItem.cs
- Icon.cs
- ProcessManager.cs
- FixUpCollection.cs
- CorrelationInitializer.cs
- KnownBoxes.cs
- XmlIncludeAttribute.cs
- __Filters.cs
- CodeAttachEventStatement.cs
- ControlCollection.cs
- ErrorHandler.cs
- OptimizedTemplateContentHelper.cs
- ApplicationServicesHostFactory.cs
- DBCommand.cs
- ListViewItemSelectionChangedEvent.cs
- ScriptResourceHandler.cs
- Crypto.cs
- RSAOAEPKeyExchangeFormatter.cs
- DrawToolTipEventArgs.cs
- ByteStorage.cs
- PenContexts.cs
- ValidationErrorEventArgs.cs
- TextPatternIdentifiers.cs
- SqlServer2KCompatibilityAnnotation.cs
- XDRSchema.cs
- TableHeaderCell.cs
- TypeExtensionConverter.cs
- SizeLimitedCache.cs
- StaticExtension.cs
- ExceptionHelpers.cs
- IpcManager.cs
- RightsManagementLicense.cs
- ClaimTypeElementCollection.cs
- GenericEnumConverter.cs
- TdsParserStateObject.cs
- Event.cs
- MemoryRecordBuffer.cs
- ShapeTypeface.cs
- StorageEntityTypeMapping.cs
- Random.cs
- WindowsAuthenticationModule.cs
- FilePrompt.cs
- Storyboard.cs
- PackageDocument.cs
- BaseCollection.cs
- TextFragmentEngine.cs
- EqualityArray.cs
- GetReadStreamResult.cs
- PropertyChangingEventArgs.cs
- CodeNamespace.cs
- TickBar.cs
- CatalogPartCollection.cs
- EncryptedKey.cs
- AccessDataSource.cs
- PropertyMapper.cs
- InternalConfigHost.cs
- EndEvent.cs
- FileUtil.cs
- InvokeSchedule.cs
- DictionaryBase.cs
- CultureNotFoundException.cs
- Switch.cs
- ObjectQuery.cs
- ParsedAttributeCollection.cs
- XpsS0ValidatingLoader.cs
- VSDExceptions.cs
- ImageMetadata.cs
- ListControl.cs
- loginstatus.cs
- HtmlTable.cs
- MyContact.cs
- DelegateTypeInfo.cs
- InheritanceRules.cs
- ServiceManager.cs
- _NetworkingPerfCounters.cs
- DataGridViewTextBoxEditingControl.cs
- Directory.cs
- CheckableControlBaseAdapter.cs
- TreeNodeCollection.cs
- Point3DAnimationUsingKeyFrames.cs
- ComboBoxRenderer.cs
- ResourcePermissionBaseEntry.cs
- LOSFormatter.cs
- Size3D.cs
- XmlKeywords.cs
- ToolStripOverflow.cs