Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / Orcas / NetFXw7 / ndp / fx / src / DataEntity / System / Data / Metadata / Edm / MetadataPropertyCollection.cs / 1 / MetadataPropertyCollection.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....],[....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Data.Common; using System.Diagnostics; using System.Reflection; using System.Data.Common.Utils; namespace System.Data.Metadata.Edm { ////// Metadata collection class supporting delay-loading of system item attributes and /// extended attributes. /// internal sealed class MetadataPropertyCollection : MetadataCollection{ /// /// Constructor taking item. /// /// Item with which the collection is associated. internal MetadataPropertyCollection(MetadataItem item) : base(GetSystemMetadataProperties(item)) { } private readonly static Memoizers_itemTypeMemoizer = new Memoizer (clrType => new ItemTypeInformation(clrType), null); // Given an item, returns all system type attributes for the item. private static IEnumerable GetSystemMetadataProperties(MetadataItem item) { EntityUtil.CheckArgumentNull(item, "item"); Type type = item.GetType(); ItemTypeInformation itemTypeInformation = GetItemTypeInformation(type); return itemTypeInformation.GetItemAttributes(item); } // Retrieves metadata for type. private static ItemTypeInformation GetItemTypeInformation(Type clrType) { return s_itemTypeMemoizer.Evaluate(clrType); } /// /// Encapsulates information about system item attributes for a particular item type. /// private class ItemTypeInformation { ////// Retrieves system attribute information for the given type. /// Requires: type must derive from MetadataItem /// /// Type internal ItemTypeInformation(Type clrType) { Debug.Assert(null != clrType); _itemProperties = GetItemProperties(clrType); } private readonly List_itemProperties; // Returns system item attributes for the given item. internal IEnumerable GetItemAttributes(MetadataItem item) { foreach (ItemPropertyInfo propertyInfo in _itemProperties) { yield return propertyInfo.GetMetadataProperty(item); } } // Gets type information for item with the given type. Uses cached information where // available. private static List GetItemProperties(Type clrType) { List result = new List (); foreach (PropertyInfo propertyInfo in clrType.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)) { foreach (MetadataPropertyAttribute attribute in propertyInfo.GetCustomAttributes( typeof(MetadataPropertyAttribute), false)) { result.Add(new ItemPropertyInfo(propertyInfo, attribute)); } } return result; } } /// /// Encapsulates information about a CLR property of an item class. /// private class ItemPropertyInfo { ////// Initialize information. /// Requires: attribute must belong to the given property. /// /// Property referenced. /// Attribute for the property. internal ItemPropertyInfo(PropertyInfo propertyInfo, MetadataPropertyAttribute attribute) { Debug.Assert(null != propertyInfo); Debug.Assert(null != attribute); _propertyInfo = propertyInfo; _attribute = attribute; } private readonly MetadataPropertyAttribute _attribute; private readonly PropertyInfo _propertyInfo; ////// Given an item, returns an instance of the item attribute described by this class. /// /// Item from which to retrieve attribute. ///Item attribute. internal MetadataProperty GetMetadataProperty(MetadataItem item) { return new MetadataProperty(_propertyInfo.Name, _attribute.Type, _attribute.IsCollectionType, new MetadataPropertyValue(_propertyInfo, item)); } } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....],[....] //--------------------------------------------------------------------- using System; using System.Collections.Generic; using System.Data.Common; using System.Diagnostics; using System.Reflection; using System.Data.Common.Utils; namespace System.Data.Metadata.Edm { ////// Metadata collection class supporting delay-loading of system item attributes and /// extended attributes. /// internal sealed class MetadataPropertyCollection : MetadataCollection{ /// /// Constructor taking item. /// /// Item with which the collection is associated. internal MetadataPropertyCollection(MetadataItem item) : base(GetSystemMetadataProperties(item)) { } private readonly static Memoizers_itemTypeMemoizer = new Memoizer (clrType => new ItemTypeInformation(clrType), null); // Given an item, returns all system type attributes for the item. private static IEnumerable GetSystemMetadataProperties(MetadataItem item) { EntityUtil.CheckArgumentNull(item, "item"); Type type = item.GetType(); ItemTypeInformation itemTypeInformation = GetItemTypeInformation(type); return itemTypeInformation.GetItemAttributes(item); } // Retrieves metadata for type. private static ItemTypeInformation GetItemTypeInformation(Type clrType) { return s_itemTypeMemoizer.Evaluate(clrType); } /// /// Encapsulates information about system item attributes for a particular item type. /// private class ItemTypeInformation { ////// Retrieves system attribute information for the given type. /// Requires: type must derive from MetadataItem /// /// Type internal ItemTypeInformation(Type clrType) { Debug.Assert(null != clrType); _itemProperties = GetItemProperties(clrType); } private readonly List_itemProperties; // Returns system item attributes for the given item. internal IEnumerable GetItemAttributes(MetadataItem item) { foreach (ItemPropertyInfo propertyInfo in _itemProperties) { yield return propertyInfo.GetMetadataProperty(item); } } // Gets type information for item with the given type. Uses cached information where // available. private static List GetItemProperties(Type clrType) { List result = new List (); foreach (PropertyInfo propertyInfo in clrType.GetProperties(BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)) { foreach (MetadataPropertyAttribute attribute in propertyInfo.GetCustomAttributes( typeof(MetadataPropertyAttribute), false)) { result.Add(new ItemPropertyInfo(propertyInfo, attribute)); } } return result; } } /// /// Encapsulates information about a CLR property of an item class. /// private class ItemPropertyInfo { ////// Initialize information. /// Requires: attribute must belong to the given property. /// /// Property referenced. /// Attribute for the property. internal ItemPropertyInfo(PropertyInfo propertyInfo, MetadataPropertyAttribute attribute) { Debug.Assert(null != propertyInfo); Debug.Assert(null != attribute); _propertyInfo = propertyInfo; _attribute = attribute; } private readonly MetadataPropertyAttribute _attribute; private readonly PropertyInfo _propertyInfo; ////// Given an item, returns an instance of the item attribute described by this class. /// /// Item from which to retrieve attribute. ///Item attribute. internal MetadataProperty GetMetadataProperty(MetadataItem item) { return new MetadataProperty(_propertyInfo.Name, _attribute.Type, _attribute.IsCollectionType, new MetadataPropertyValue(_propertyInfo, item)); } } } } // 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
- RNGCryptoServiceProvider.cs
- BuilderPropertyEntry.cs
- IncrementalReadDecoders.cs
- StrokeNodeOperations2.cs
- MemberListBinding.cs
- DocumentPageViewAutomationPeer.cs
- QilIterator.cs
- EnumUnknown.cs
- ServiceDescriptionSerializer.cs
- TableDetailsRow.cs
- XmlRawWriter.cs
- CodeAttachEventStatement.cs
- PolicyLevel.cs
- WebPart.cs
- XPathException.cs
- diagnosticsswitches.cs
- PersonalizationProviderHelper.cs
- SafeRegistryHandle.cs
- DispatchWrapper.cs
- StringAnimationBase.cs
- XmlSchemaAnnotated.cs
- CapabilitiesPattern.cs
- PropertyAccessVisitor.cs
- ReliableChannelBinder.cs
- RenamedEventArgs.cs
- CodeObject.cs
- HwndStylusInputProvider.cs
- ListDictionary.cs
- XNameTypeConverter.cs
- MissingSatelliteAssemblyException.cs
- XmlSchemaAppInfo.cs
- BCryptNative.cs
- ExpressionVisitorHelpers.cs
- DoubleAnimationBase.cs
- TableProviderWrapper.cs
- RequestQueryParser.cs
- XPathNodeList.cs
- ColumnMapProcessor.cs
- Propagator.JoinPropagator.JoinPredicateVisitor.cs
- SafeProcessHandle.cs
- Html32TextWriter.cs
- CuspData.cs
- QilScopedVisitor.cs
- PerformanceCounterPermissionEntry.cs
- SessionStateSection.cs
- URLAttribute.cs
- VisualBrush.cs
- ISAPIApplicationHost.cs
- SystemInformation.cs
- ContainerControlDesigner.cs
- DesignerTransaction.cs
- DecoderFallback.cs
- TextRangeProviderWrapper.cs
- ContextBase.cs
- TextRunProperties.cs
- SimpleWebHandlerParser.cs
- Configuration.cs
- EventLogPermissionEntry.cs
- EntityDataSourceChangedEventArgs.cs
- SecureStringHasher.cs
- ServiceChannelFactory.cs
- XamlWrapperReaders.cs
- SrgsOneOf.cs
- TableChangeProcessor.cs
- DesignColumnCollection.cs
- ExtenderProvidedPropertyAttribute.cs
- PageParserFilter.cs
- ValidatingCollection.cs
- CheckBoxList.cs
- WebPartCancelEventArgs.cs
- GridViewAutomationPeer.cs
- WebPartsSection.cs
- RenderDataDrawingContext.cs
- CachedPathData.cs
- PersonalizationProviderHelper.cs
- RecordManager.cs
- OdbcConnectionString.cs
- HelpInfo.cs
- TextParagraph.cs
- SafeProcessHandle.cs
- InvariantComparer.cs
- SrgsItemList.cs
- ConfigXmlCDataSection.cs
- HashCodeCombiner.cs
- BrowserCapabilitiesCodeGenerator.cs
- ParsedAttributeCollection.cs
- DataSourceView.cs
- ZipIOBlockManager.cs
- FormViewRow.cs
- ItemsPresenter.cs
- GenericWebPart.cs
- ScriptingJsonSerializationSection.cs
- OdbcConnectionHandle.cs
- RequestCachingSection.cs
- UnmanagedHandle.cs
- ISSmlParser.cs
- SqlTypesSchemaImporter.cs
- XmlArrayAttribute.cs
- PipeException.cs
- ParameterToken.cs