Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Map / Update / Internal / SourceInterpreter.cs / 1305376 / SourceInterpreter.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Collections.ObjectModel; using System.Diagnostics; using System.Data.Objects; using System.Data.Metadata.Edm; namespace System.Data.Mapping.Update.Internal { ////// This class determines the state entries contributing to an expression /// propagated through an update mapping view (values in propagated expressions /// remember where they come from) /// internal class SourceInterpreter { private SourceInterpreter(UpdateTranslator translator, EntitySet sourceTable) { m_stateEntries = new List(); m_translator = translator; m_sourceTable = sourceTable; } private readonly List m_stateEntries; private readonly UpdateTranslator m_translator; private readonly EntitySet m_sourceTable; /// /// Finds all markup associated with the given source. /// /// Source expression. Must not be null. /// Translator containing session information. /// Table from which the exception was thrown (must not be null). ///Markup. internal static ReadOnlyCollectionGetAllStateEntries(PropagatorResult source, UpdateTranslator translator, EntitySet sourceTable) { Debug.Assert(null != source); Debug.Assert(null != translator); Debug.Assert(null != sourceTable); SourceInterpreter interpreter = new SourceInterpreter(translator, sourceTable); interpreter.RetrieveResultMarkup(source); return new ReadOnlyCollection (interpreter.m_stateEntries); } private void RetrieveResultMarkup(PropagatorResult source) { Debug.Assert(null != source); if (source.Identifier != PropagatorResult.NullIdentifier) { // state entries travel with identifiers. several state entries may be merged // into a single identifier result via joins in the update mapping view do { if (null != source.StateEntry) { m_stateEntries.Add(source.StateEntry); if (source.Identifier != PropagatorResult.NullIdentifier) { // if this is an identifier, it may also be registered with an "owner". // Return the owner as well if the owner is also mapped to this table. PropagatorResult owner; if (m_translator.KeyManager.TryGetIdentifierOwner(source.Identifier, out owner) && null != owner.StateEntry && ExtentInScope(owner.StateEntry.EntitySet)) { m_stateEntries.Add(owner.StateEntry); } // Check if are any referential constraints. If so, the entity key // implies that the dependent relationship instance is also being // handled in this result. foreach (IEntityStateEntry stateEntry in m_translator.KeyManager.GetDependentStateEntries(source.Identifier)) { m_stateEntries.Add(stateEntry); } } } source = source.Next; } while (null != source); } else if (!source.IsSimple && !source.IsNull) { // walk children foreach (PropagatorResult child in source.GetMemberValues()) { RetrieveResultMarkup(child); } } } // Determines whether the given table is in scope for the current source: if the source // table does not map to the source table for this interpreter, it is not in scope // for exceptions thrown from this table. private bool ExtentInScope(EntitySetBase extent) { if (null == extent) { return false; } // determine if the extent is mapped to this table return m_translator.ViewLoader.GetAffectedTables(extent, m_translator.MetadataWorkspace).Contains(m_sourceTable); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- // // Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Collections.ObjectModel; using System.Diagnostics; using System.Data.Objects; using System.Data.Metadata.Edm; namespace System.Data.Mapping.Update.Internal { ////// This class determines the state entries contributing to an expression /// propagated through an update mapping view (values in propagated expressions /// remember where they come from) /// internal class SourceInterpreter { private SourceInterpreter(UpdateTranslator translator, EntitySet sourceTable) { m_stateEntries = new List(); m_translator = translator; m_sourceTable = sourceTable; } private readonly List m_stateEntries; private readonly UpdateTranslator m_translator; private readonly EntitySet m_sourceTable; /// /// Finds all markup associated with the given source. /// /// Source expression. Must not be null. /// Translator containing session information. /// Table from which the exception was thrown (must not be null). ///Markup. internal static ReadOnlyCollectionGetAllStateEntries(PropagatorResult source, UpdateTranslator translator, EntitySet sourceTable) { Debug.Assert(null != source); Debug.Assert(null != translator); Debug.Assert(null != sourceTable); SourceInterpreter interpreter = new SourceInterpreter(translator, sourceTable); interpreter.RetrieveResultMarkup(source); return new ReadOnlyCollection (interpreter.m_stateEntries); } private void RetrieveResultMarkup(PropagatorResult source) { Debug.Assert(null != source); if (source.Identifier != PropagatorResult.NullIdentifier) { // state entries travel with identifiers. several state entries may be merged // into a single identifier result via joins in the update mapping view do { if (null != source.StateEntry) { m_stateEntries.Add(source.StateEntry); if (source.Identifier != PropagatorResult.NullIdentifier) { // if this is an identifier, it may also be registered with an "owner". // Return the owner as well if the owner is also mapped to this table. PropagatorResult owner; if (m_translator.KeyManager.TryGetIdentifierOwner(source.Identifier, out owner) && null != owner.StateEntry && ExtentInScope(owner.StateEntry.EntitySet)) { m_stateEntries.Add(owner.StateEntry); } // Check if are any referential constraints. If so, the entity key // implies that the dependent relationship instance is also being // handled in this result. foreach (IEntityStateEntry stateEntry in m_translator.KeyManager.GetDependentStateEntries(source.Identifier)) { m_stateEntries.Add(stateEntry); } } } source = source.Next; } while (null != source); } else if (!source.IsSimple && !source.IsNull) { // walk children foreach (PropagatorResult child in source.GetMemberValues()) { RetrieveResultMarkup(child); } } } // Determines whether the given table is in scope for the current source: if the source // table does not map to the source table for this interpreter, it is not in scope // for exceptions thrown from this table. private bool ExtentInScope(EntitySetBase extent) { if (null == extent) { return false; } // determine if the extent is mapped to this table return m_translator.ViewLoader.GetAffectedTables(extent, m_translator.MetadataWorkspace).Contains(m_sourceTable); } } } // 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
- SmiContextFactory.cs
- MenuItem.cs
- QilInvokeLateBound.cs
- BindingWorker.cs
- SQLBytes.cs
- DiagnosticStrings.cs
- SingleStorage.cs
- CodePageEncoding.cs
- MetaChildrenColumn.cs
- MetaModel.cs
- VisualTreeHelper.cs
- InvokeProviderWrapper.cs
- Stack.cs
- TextEffectCollection.cs
- NotifyInputEventArgs.cs
- CollectionBuilder.cs
- AdornerHitTestResult.cs
- TaskFormBase.cs
- DbDeleteCommandTree.cs
- LoadedOrUnloadedOperation.cs
- OdbcEnvironmentHandle.cs
- AdRotator.cs
- SelectionProcessor.cs
- DbParameterCollectionHelper.cs
- TypeValidationEventArgs.cs
- _TransmitFileOverlappedAsyncResult.cs
- ConfigDefinitionUpdates.cs
- HtmlLinkAdapter.cs
- IconHelper.cs
- XmlSecureResolver.cs
- DelegateHelpers.cs
- Context.cs
- MediaTimeline.cs
- Viewport3DAutomationPeer.cs
- ConnectionsZone.cs
- ChildTable.cs
- NavigationHelper.cs
- ResourceDictionary.cs
- ServiceInfo.cs
- DbException.cs
- MemoryMappedViewAccessor.cs
- ChildDocumentBlock.cs
- AttachmentService.cs
- FormViewDesigner.cs
- SafeSerializationManager.cs
- FormView.cs
- HttpProfileBase.cs
- ProviderMetadata.cs
- PopupEventArgs.cs
- Transform.cs
- StorageMappingItemCollection.cs
- SingleAnimationBase.cs
- SingleAnimationBase.cs
- BindingWorker.cs
- ToolboxItem.cs
- Accessible.cs
- _LocalDataStore.cs
- ZipIOLocalFileBlock.cs
- DynamicResourceExtension.cs
- Material.cs
- ShutDownListener.cs
- XmlReturnWriter.cs
- Identity.cs
- UntrustedRecipientException.cs
- LocationReferenceValue.cs
- XpsFilter.cs
- KeySpline.cs
- ServiceKnownTypeAttribute.cs
- DbProviderFactoriesConfigurationHandler.cs
- BitmapPalette.cs
- KernelTypeValidation.cs
- SchemaTypeEmitter.cs
- RbTree.cs
- VirtualizingPanel.cs
- AmbiguousMatchException.cs
- InstanceKeyCollisionException.cs
- DelegateHelpers.Generated.cs
- TaskCanceledException.cs
- FileNotFoundException.cs
- SourceFileInfo.cs
- DataGridViewColumnDividerDoubleClickEventArgs.cs
- securitycriticaldataformultiplegetandset.cs
- InsufficientMemoryException.cs
- SymbolType.cs
- AudioDeviceOut.cs
- VsPropertyGrid.cs
- UpdateProgress.cs
- _BufferOffsetSize.cs
- HMACSHA1.cs
- StorageRoot.cs
- TemplatePartAttribute.cs
- ClientTarget.cs
- EntityContainerAssociationSetEnd.cs
- XamlSerializerUtil.cs
- Menu.cs
- CustomExpression.cs
- TextServicesHost.cs
- XComponentModel.cs
- TryCatch.cs
- SystemFonts.cs