Code:
/ 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / DataEntity / System / Data / Metadata / ObjectLayer / AssemblyCache.cs / 1305376 / AssemblyCache.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] // @backupOwner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Data.Common.Utils; using System.Diagnostics; using System.Reflection; namespace System.Data.Metadata.Edm { internal static class AssemblyCache { // Global Assembly Cache private readonly static Dictionarys_globalAssemblyCache = new Dictionary (); private static object _assemblyCacheLock = new object(); //List of assemblies having view gen attribute. We cache these things if we discover //these assemblies while looking for O-space metadata. private static IList s_viewGenAssemblies = new ThreadSafeList (); internal static LockedAssemblyCache AquireLockedAssemblyCache() { return new LockedAssemblyCache(_assemblyCacheLock, s_globalAssemblyCache); } internal static void LoadAssembly(Assembly assembly, bool loadReferencedAssemblies, KnownAssembliesSet knownAssemblies, out Dictionary typesInLoading, out List errors) { object loaderCookie = null; LoadAssembly(assembly, loadReferencedAssemblies, knownAssemblies, null, null, ref loaderCookie, out typesInLoading, out errors); } internal static void LoadAssembly(Assembly assembly, bool loadReferencedAssemblies, KnownAssembliesSet knownAssemblies, EdmItemCollection edmItemCollection, Action logLoadMessage, ref object loaderCookie, out Dictionary typesInLoading, out List errors) { Debug.Assert(loaderCookie == null || loaderCookie is Func , "This is a bad loader cookie"); typesInLoading = null; errors = null; using (LockedAssemblyCache lockedAssemblyCache = AssemblyCache.AquireLockedAssemblyCache()) { ObjectItemLoadingSessionData loadingData = new ObjectItemLoadingSessionData(knownAssemblies, lockedAssemblyCache, edmItemCollection, logLoadMessage, loaderCookie); LoadAssembly(assembly, loadReferencedAssemblies, loadingData); loaderCookie = loadingData.LoaderCookie; // resolve references to top level types (base types, navigation properties returns and associations, and complex type properties) loadingData.CompleteSession(); if (loadingData.EdmItemErrors.Count == 0) { // do the validation for the all the new types // Now, perform validation on all the new types EdmValidator validator = new EdmValidator(); validator.SkipReadOnlyItems = true; validator.Validate(loadingData.TypesInLoading.Values, loadingData.EdmItemErrors); // Update the global cache if there are no errors if (loadingData.EdmItemErrors.Count == 0) { if (ObjectItemAssemblyLoader.IsAttributeLoader(loadingData.ObjectItemAssemblyLoaderFactory)) { // we only cache items from the attribute loader globally, the // items loaded by convention will change depending on the cspace // provided. cspace will have a cache of it's own for assemblies UpdateCache(lockedAssemblyCache, loadingData.AssembliesLoaded); } else if (loadingData.EdmItemCollection != null && ObjectItemAssemblyLoader.IsConventionLoader(loadingData.ObjectItemAssemblyLoaderFactory)) { UpdateCache(loadingData.EdmItemCollection, loadingData.AssembliesLoaded); } } } if (loadingData.TypesInLoading.Count > 0) { foreach (EdmType edmType in loadingData.TypesInLoading.Values) { edmType.SetReadOnly(); } } // Update the out parameters once you are done with loading typesInLoading = loadingData.TypesInLoading; errors = loadingData.EdmItemErrors; } } private static void LoadAssembly(Assembly assembly, bool loadReferencedAssemblies, ObjectItemLoadingSessionData loadingData) { // Check if the assembly is already loaded KnownAssemblyEntry entry; bool shouldLoadReferences = false; if (loadingData.KnownAssemblies.TryGetKnownAssembly(assembly, loadingData.ObjectItemAssemblyLoaderFactory, loadingData.EdmItemCollection, out entry)) { shouldLoadReferences = !entry.ReferencedAssembliesAreLoaded && loadReferencedAssemblies; } else { ObjectItemAssemblyLoader loader = ObjectItemAssemblyLoader.CreateLoader(assembly, loadingData); loader.Load(); shouldLoadReferences = loadReferencedAssemblies; } if (shouldLoadReferences) { if (entry == null && loadingData.KnownAssemblies.TryGetKnownAssembly(assembly, loadingData.ObjectItemAssemblyLoaderFactory, loadingData.EdmItemCollection, out entry) || entry != null) { entry.ReferencedAssembliesAreLoaded = true; } Debug.Assert(entry != null, "we should always have an entry, why don't we?"); // We will traverse through all the statically linked assemblies and their dependencies. // Only assemblies with the EdmSchemaAttribute will be loaded and rest will be ignored // Even if the schema attribute is missing, we should still check all the dependent assemblies // any of the dependent assemblies can have the schema attribute // After the given assembly has been loaded, check on the flag in _knownAssemblies to see if it has already // been recursively loaded. The flag can be true if it was already loaded before this function was called foreach (Assembly referencedAssembly in MetadataAssemblyHelper.GetNonSystemReferencedAssemblies(assembly)) { // filter out "known" assemblies to prevent unnecessary loading EntityBid.Trace(" loadededAssembly='%ls'\n", referencedAssembly.FullName); // recursive call LoadAssembly(referencedAssembly, loadReferencedAssemblies, loadingData); } } } private static void UpdateCache(EdmItemCollection edmItemCollection, Dictionary assemblies) { foreach (var entry in assemblies) { edmItemCollection.ConventionalOcCache.AddAssemblyToOcCacheFromAssemblyCache( entry.Key, new ImmutableAssemblyCacheEntry(entry.Value)); } } private static void UpdateCache(LockedAssemblyCache lockedAssemblyCache, Dictionary assemblies) { foreach (KeyValuePair entry in assemblies) { // Add all the assemblies from the loading context to the global cache lockedAssemblyCache.Add(entry.Key, new ImmutableAssemblyCacheEntry(entry.Value)); } } internal static IList ViewGenerationAssemblies { get { return s_viewGenAssemblies; } } } } // 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
- SplineQuaternionKeyFrame.cs
- FormatStringEditor.cs
- TableColumn.cs
- PropertyDescriptorCollection.cs
- SafeUserTokenHandle.cs
- InvalidCommandTreeException.cs
- AnnotationService.cs
- ListViewTableCell.cs
- MimeBasePart.cs
- SelectionWordBreaker.cs
- SafeHandle.cs
- ContainerParagraph.cs
- StaticExtensionConverter.cs
- TaskForm.cs
- DataServiceQueryProvider.cs
- StringUtil.cs
- EmptyEnumerator.cs
- CodeLabeledStatement.cs
- RulePatternOps.cs
- LazyTextWriterCreator.cs
- RC2.cs
- TextFormatterContext.cs
- SoapReflectionImporter.cs
- DataControlFieldTypeEditor.cs
- StringFreezingAttribute.cs
- oledbconnectionstring.cs
- ControlFilterExpression.cs
- ReversePositionQuery.cs
- SessionSwitchEventArgs.cs
- HMACSHA1.cs
- FormViewInsertEventArgs.cs
- MarkerProperties.cs
- DynamicPropertyReader.cs
- SQLMembershipProvider.cs
- BamlLocalizerErrorNotifyEventArgs.cs
- ListItem.cs
- EntryPointNotFoundException.cs
- TextParagraphView.cs
- ProcessHostFactoryHelper.cs
- InboundActivityHelper.cs
- ResourceContainerWrapper.cs
- XmlSchemaSequence.cs
- OptimizerPatterns.cs
- SqlDependencyListener.cs
- Expander.cs
- IRCollection.cs
- ArgumentOutOfRangeException.cs
- ConvertersCollection.cs
- XPathDocumentIterator.cs
- ClientSettings.cs
- Highlights.cs
- ActivityBindForm.Designer.cs
- HtmlElementCollection.cs
- XmlChildEnumerator.cs
- PrinterUnitConvert.cs
- CrossAppDomainChannel.cs
- XmlSchemas.cs
- ConnectionStringsSection.cs
- ListChangedEventArgs.cs
- XmlSchemaComplexContent.cs
- WinFormsUtils.cs
- ItemCollection.cs
- ChildrenQuery.cs
- ByteAnimationUsingKeyFrames.cs
- StringTraceRecord.cs
- Double.cs
- UnsafeNativeMethods.cs
- BaseAppDomainProtocolHandler.cs
- ValueConversionAttribute.cs
- NativeMethods.cs
- BrowserCapabilitiesFactory.cs
- ListBoxAutomationPeer.cs
- HttpPostProtocolReflector.cs
- ControlParameter.cs
- HtmlControl.cs
- SystemResourceKey.cs
- TypeConverterHelper.cs
- ProxyFragment.cs
- SafeCertificateStore.cs
- RewritingSimplifier.cs
- SizeConverter.cs
- WebDisplayNameAttribute.cs
- TaiwanCalendar.cs
- HotSpotCollection.cs
- LabelLiteral.cs
- NativeMethods.cs
- PaintValueEventArgs.cs
- Crypto.cs
- ResourceReferenceExpression.cs
- TrackPoint.cs
- WorkflowPrinting.cs
- XmlTextWriter.cs
- DesignColumn.cs
- PeerNearMe.cs
- Compiler.cs
- DockProviderWrapper.cs
- Matrix3DConverter.cs
- MemoryStream.cs
- WindowsContainer.cs
- XmlCompatibilityReader.cs