Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / ndp / fx / src / DataEntity / System / Data / Map / Update / Internal / SourceInterpreter.cs / 3 / 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 != 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 (null != source.StateEntry) { m_stateEntries.Add(source.StateEntry); } long identifier = source.Identifier; if (PropagatorResult.NullIdentifier != identifier) { // 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(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(identifier)) { m_stateEntries.Add(stateEntry); } } 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).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 != 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 (null != source.StateEntry) { m_stateEntries.Add(source.StateEntry); } long identifier = source.Identifier; if (PropagatorResult.NullIdentifier != identifier) { // 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(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(identifier)) { m_stateEntries.Add(stateEntry); } } 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).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
- Permission.cs
- File.cs
- UserControl.cs
- WorkflowInstance.cs
- AnnotationResource.cs
- SoapObjectReader.cs
- HotCommands.cs
- NullEntityWrapper.cs
- XslVisitor.cs
- CheckBoxDesigner.cs
- EdmSchemaAttribute.cs
- WebPartEventArgs.cs
- ACL.cs
- MainMenu.cs
- CodeSnippetStatement.cs
- SubpageParaClient.cs
- AuthorizationBehavior.cs
- MessagePropertyFilter.cs
- HtmlControlPersistable.cs
- Panel.cs
- SiteMapDesignerDataSourceView.cs
- SaveFileDialog.cs
- DataGridState.cs
- configsystem.cs
- Preprocessor.cs
- FileLogRecord.cs
- Common.cs
- HashAlgorithm.cs
- ResolveCriteria.cs
- InputScope.cs
- ProgressBar.cs
- IPCCacheManager.cs
- XmlWrappingWriter.cs
- NonClientArea.cs
- _SSPISessionCache.cs
- DocumentPageTextView.cs
- XmlLinkedNode.cs
- DataColumnPropertyDescriptor.cs
- Tablet.cs
- HtmlControlDesigner.cs
- CharKeyFrameCollection.cs
- XsltException.cs
- SecureUICommand.cs
- SerializableAuthorizationContext.cs
- XAMLParseException.cs
- SubstitutionList.cs
- TableStyle.cs
- TempFiles.cs
- RelatedPropertyManager.cs
- ValidatingReaderNodeData.cs
- PackWebResponse.cs
- SqlBooleanMismatchVisitor.cs
- SynchronizingStream.cs
- PeerPresenceInfo.cs
- ParsedAttributeCollection.cs
- ListSourceHelper.cs
- PropertySourceInfo.cs
- DocumentPageHost.cs
- TemplateBindingExpressionConverter.cs
- ZoneIdentityPermission.cs
- FileDialog_Vista.cs
- RelationshipDetailsCollection.cs
- MetadataItemSerializer.cs
- WebPartZoneAutoFormat.cs
- HttpRuntime.cs
- OutputScope.cs
- ErasingStroke.cs
- EventSource.cs
- ConnectionModeReader.cs
- ProxyElement.cs
- Pair.cs
- FlagsAttribute.cs
- TextureBrush.cs
- CalendarBlackoutDatesCollection.cs
- PreviewPageInfo.cs
- SplashScreen.cs
- CodeTypeMemberCollection.cs
- DefaultParameterValueAttribute.cs
- EventArgs.cs
- UInt16.cs
- MimeTypePropertyAttribute.cs
- WebEventCodes.cs
- Deflater.cs
- TimeStampChecker.cs
- NullExtension.cs
- JoinGraph.cs
- TextureBrush.cs
- MobileContainerDesigner.cs
- UniqueConstraint.cs
- QueryableDataSource.cs
- ObjectToIdCache.cs
- XmlnsDefinitionAttribute.cs
- Encoder.cs
- TimelineGroup.cs
- TraceData.cs
- UpdateProgress.cs
- CodeTypeReference.cs
- DNS.cs
- DateTimeUtil.cs
- UdpChannelListener.cs