Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / Orcas / QFE / ndp / fx / src / DataEntity / System / Data / Objects / ELinq / TypeSystem.cs / 2 / TypeSystem.cs
//---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Reflection; using System.Data.Entity; namespace System.Data.Objects.ELinq { ////// Static utility class. Replica of query\DLinq\TypeSystem.cs /// internal static class TypeSystem { private static readonly MethodInfo s_getDefaultMethod = typeof(TypeSystem).GetMethod( "GetDefault", BindingFlags.Static | BindingFlags.NonPublic); private static T GetDefault() { return default(T); } internal static object GetDefaultValue(Type type) { // null is always the default for non value types and Nullable<> if (!type.IsValueType || (type.IsGenericType && typeof(Nullable<>) == type.GetGenericTypeDefinition())) { return null; } MethodInfo getDefaultMethod = s_getDefaultMethod.MakeGenericMethod(type); object defaultValue = getDefaultMethod.Invoke(null, new object[] { }); return defaultValue; } internal static bool IsSequenceType(Type seqType) { return FindIEnumerable(seqType) != null; } /// /// Resolves MemberInfo to a property or field. /// /// Member to test. /// Name of member. /// Type of member. ///Given member normalized as a property or field. internal static MemberInfo PropertyOrField(MemberInfo member, out string name, out Type type) { name = null; type = null; if (member.MemberType == MemberTypes.Field) { FieldInfo field = (FieldInfo)member; name = field.Name; type = field.FieldType; return field; } else if (member.MemberType == MemberTypes.Property) { PropertyInfo property = (PropertyInfo)member; if (0 != property.GetIndexParameters().Length) { // don't support indexed properties throw EntityUtil.NotSupported(System.Data.Entity.Strings.ELinq_PropertyIndexNotSupported); } name = property.Name; type = property.PropertyType; return property; } else if (member.MemberType == MemberTypes.Method) { // this may be a property accessor in disguise (if it's a RuntimeMethodHandle) MethodInfo method = (MethodInfo)member; if (method.IsSpecialName) // property accessor methods must set IsSpecialName { // try to find a property with the given getter foreach (PropertyInfo property in method.DeclaringType.GetProperties( BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)) { if (property.CanRead && (property.GetGetMethod(true) == method)) { return PropertyOrField(property, out name, out type); } } } } throw EntityUtil.NotSupported(System.Data.Entity.Strings.ELinq_NotPropertyOrField(member.Name)); } private static Type FindIEnumerable(Type seqType) { // Ignores "terminal" primitive types in the EDM although they may implement IEnumerable<> if (seqType == null || seqType == typeof(string) || seqType == typeof(byte[])) return null; if (seqType.IsArray) return typeof(IEnumerable<>).MakeGenericType(seqType.GetElementType()); if (seqType.IsGenericType) { foreach (Type arg in seqType.GetGenericArguments()) { Type ienum = typeof(IEnumerable<>).MakeGenericType(arg); if (ienum.IsAssignableFrom(seqType)) { return ienum; } } } Type[] ifaces = seqType.GetInterfaces(); if (ifaces != null && ifaces.Length > 0) { foreach (Type iface in ifaces) { Type ienum = FindIEnumerable(iface); if (ienum != null) return ienum; } } if (seqType.BaseType != null && seqType.BaseType != typeof(object)) { return FindIEnumerable(seqType.BaseType); } return null; } internal static Type GetElementType(Type seqType) { Type ienum = FindIEnumerable(seqType); if (ienum == null) return seqType; return ienum.GetGenericArguments()[0]; } internal static bool IsNullableType(Type type) { return type != null && type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>); } internal static Type GetNonNullableType(Type type) { if (IsNullableType(type)) { return type.GetGenericArguments()[0]; } return type; } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //---------------------------------------------------------------------- //// Copyright (c) Microsoft Corporation. All rights reserved. // // // @owner [....] //--------------------------------------------------------------------- using System.Collections.Generic; using System.Reflection; using System.Data.Entity; namespace System.Data.Objects.ELinq { ////// Static utility class. Replica of query\DLinq\TypeSystem.cs /// internal static class TypeSystem { private static readonly MethodInfo s_getDefaultMethod = typeof(TypeSystem).GetMethod( "GetDefault", BindingFlags.Static | BindingFlags.NonPublic); private static T GetDefault() { return default(T); } internal static object GetDefaultValue(Type type) { // null is always the default for non value types and Nullable<> if (!type.IsValueType || (type.IsGenericType && typeof(Nullable<>) == type.GetGenericTypeDefinition())) { return null; } MethodInfo getDefaultMethod = s_getDefaultMethod.MakeGenericMethod(type); object defaultValue = getDefaultMethod.Invoke(null, new object[] { }); return defaultValue; } internal static bool IsSequenceType(Type seqType) { return FindIEnumerable(seqType) != null; } /// /// Resolves MemberInfo to a property or field. /// /// Member to test. /// Name of member. /// Type of member. ///Given member normalized as a property or field. internal static MemberInfo PropertyOrField(MemberInfo member, out string name, out Type type) { name = null; type = null; if (member.MemberType == MemberTypes.Field) { FieldInfo field = (FieldInfo)member; name = field.Name; type = field.FieldType; return field; } else if (member.MemberType == MemberTypes.Property) { PropertyInfo property = (PropertyInfo)member; if (0 != property.GetIndexParameters().Length) { // don't support indexed properties throw EntityUtil.NotSupported(System.Data.Entity.Strings.ELinq_PropertyIndexNotSupported); } name = property.Name; type = property.PropertyType; return property; } else if (member.MemberType == MemberTypes.Method) { // this may be a property accessor in disguise (if it's a RuntimeMethodHandle) MethodInfo method = (MethodInfo)member; if (method.IsSpecialName) // property accessor methods must set IsSpecialName { // try to find a property with the given getter foreach (PropertyInfo property in method.DeclaringType.GetProperties( BindingFlags.Static | BindingFlags.Instance | BindingFlags.Public | BindingFlags.NonPublic)) { if (property.CanRead && (property.GetGetMethod(true) == method)) { return PropertyOrField(property, out name, out type); } } } } throw EntityUtil.NotSupported(System.Data.Entity.Strings.ELinq_NotPropertyOrField(member.Name)); } private static Type FindIEnumerable(Type seqType) { // Ignores "terminal" primitive types in the EDM although they may implement IEnumerable<> if (seqType == null || seqType == typeof(string) || seqType == typeof(byte[])) return null; if (seqType.IsArray) return typeof(IEnumerable<>).MakeGenericType(seqType.GetElementType()); if (seqType.IsGenericType) { foreach (Type arg in seqType.GetGenericArguments()) { Type ienum = typeof(IEnumerable<>).MakeGenericType(arg); if (ienum.IsAssignableFrom(seqType)) { return ienum; } } } Type[] ifaces = seqType.GetInterfaces(); if (ifaces != null && ifaces.Length > 0) { foreach (Type iface in ifaces) { Type ienum = FindIEnumerable(iface); if (ienum != null) return ienum; } } if (seqType.BaseType != null && seqType.BaseType != typeof(object)) { return FindIEnumerable(seqType.BaseType); } return null; } internal static Type GetElementType(Type seqType) { Type ienum = FindIEnumerable(seqType); if (ienum == null) return seqType; return ienum.GetGenericArguments()[0]; } internal static bool IsNullableType(Type type) { return type != null && type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>); } internal static Type GetNonNullableType(Type type) { if (IsNullableType(type)) { return type.GetGenericArguments()[0]; } return type; } } } // 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
- InstalledFontCollection.cs
- DesignTimeVisibleAttribute.cs
- TextServicesCompartment.cs
- LocalFileSettingsProvider.cs
- Utils.cs
- PresentationTraceSources.cs
- Ref.cs
- ContextStaticAttribute.cs
- StringInfo.cs
- DataViewSetting.cs
- StaticDataManager.cs
- XamlBrushSerializer.cs
- EntityViewGenerationAttribute.cs
- RecognizedAudio.cs
- DeflateEmulationStream.cs
- HiddenField.cs
- GeneralTransformCollection.cs
- UnsafeCollabNativeMethods.cs
- ClientBuildManagerCallback.cs
- NavigateEvent.cs
- BitStream.cs
- Expr.cs
- CodeTryCatchFinallyStatement.cs
- SpecularMaterial.cs
- QueryReaderSettings.cs
- RemotingServices.cs
- ScriptReferenceBase.cs
- TypeBrowserDialog.cs
- CultureSpecificStringDictionary.cs
- NamespaceInfo.cs
- DataServiceProcessingPipeline.cs
- TreeNode.cs
- DeviceContext.cs
- FrameworkElementAutomationPeer.cs
- ContextStack.cs
- XmlIgnoreAttribute.cs
- SharedConnectionInfo.cs
- ViewStateModeByIdAttribute.cs
- DatatypeImplementation.cs
- MobileControl.cs
- IndentTextWriter.cs
- WorkflowRuntimeServiceElementCollection.cs
- TextViewSelectionProcessor.cs
- ConsoleTraceListener.cs
- UnaryQueryOperator.cs
- keycontainerpermission.cs
- GlobalizationAssembly.cs
- FontCacheUtil.cs
- Odbc32.cs
- EventDriven.cs
- Menu.cs
- Size.cs
- Sql8ConformanceChecker.cs
- DnsEndpointIdentity.cs
- GenericTypeParameterBuilder.cs
- Pkcs7Recipient.cs
- InvalidCommandTreeException.cs
- CursorConverter.cs
- DataGridBoundColumn.cs
- HttpWebRequestElement.cs
- SafeThreadHandle.cs
- DeadCharTextComposition.cs
- ServiceHandle.cs
- SqlDataSourceStatusEventArgs.cs
- ElementUtil.cs
- TextTrailingCharacterEllipsis.cs
- QilDataSource.cs
- StreamGeometry.cs
- Avt.cs
- ProvidePropertyAttribute.cs
- CodeGen.cs
- TextFormatterContext.cs
- PreProcessInputEventArgs.cs
- EditorOptionAttribute.cs
- QueryCacheEntry.cs
- RuleSettingsCollection.cs
- DSACryptoServiceProvider.cs
- StickyNoteAnnotations.cs
- FrameAutomationPeer.cs
- FileNotFoundException.cs
- SafeNativeMethods.cs
- AffineTransform3D.cs
- ConnectionProviderAttribute.cs
- GridEntryCollection.cs
- DataSvcMapFile.cs
- RegistryConfigurationProvider.cs
- PageParserFilter.cs
- Overlapped.cs
- VerticalAlignConverter.cs
- RunWorkerCompletedEventArgs.cs
- OperandQuery.cs
- NamespaceEmitter.cs
- CompositeKey.cs
- SystemInfo.cs
- SqlDelegatedTransaction.cs
- FlatButtonAppearance.cs
- PeerTransportListenAddressValidatorAttribute.cs
- XmlSerializerNamespaces.cs
- ParameterModifier.cs
- MenuBindingsEditor.cs