创建T4模本拷贝以下代码
<#@ template language="C#" debug="false" hostspecific="true"#> <#@ include file="EF.Utility.CS.ttinclude"#><#@ output extension=".cs"#><# const string inputFile = @"..WebCms.edmx"; var textTransform = DynamicTextTransformation.Create(this); var code = new CodeGenerationTools(this); var ef = new MetadataTools(this); var typeMapper = new TypeMapper(code, ef, textTransform.Errors); var fileManager = EntityFrameworkTemplateFileManager.Create(this); var itemCollection = new EdmMetadataLoader(textTransform.Host, textTransform.Errors).CreateEdmItemCollection(inputFile); var codeStringGenerator = new CodeStringGenerator(code, typeMapper, ef); if (!typeMapper.VerifyCaseInsensitiveTypeUniqueness(typeMapper.GetAllGlobalItems(itemCollection), inputFile)) { return string.Empty; } WriteHeader(codeStringGenerator, fileManager); foreach (var entity in typeMapper.GetItemsToGenerate<EntityType>(itemCollection)) { fileManager.StartNewFile(entity.Name + "_make.cs"); #> <#=codeStringGenerator.UsingDirectives(inHeader: false)#> namespace Model { public class <#=entity.Name#>_make { <# var propertiesWithDefaultValues = typeMapper.GetPropertiesWithDefaultValues(entity); var collectionNavigationProperties = typeMapper.GetCollectionNavigationProperties(entity); var complexProperties = typeMapper.GetComplexProperties(entity); var simpleProperties = typeMapper.GetSimpleProperties(entity); if (simpleProperties.Any()) { foreach (var edmProperty in simpleProperties) { #> <#=codeStringGenerator.Property(edmProperty)#> <# } } if (complexProperties.Any()) { #> <# foreach(var complexProperty in complexProperties) { #> <#=codeStringGenerator.Property(complexProperty)#> <# } } #> } <# EndNamespace(code); } foreach (var complex in typeMapper.GetItemsToGenerate<ComplexType>(itemCollection)) { fileManager.StartNewFile(complex.Name + ".cs"); BeginNamespace(code); #> <#=codeStringGenerator.UsingDirectives(inHeader: false, includeCollections: false)#> <#=Accessibility.ForType(complex)#> partial class <#=code.Escape(complex)#> { <# var complexProperties = typeMapper.GetComplexProperties(complex); var propertiesWithDefaultValues = typeMapper.GetPropertiesWithDefaultValues(complex); if (propertiesWithDefaultValues.Any() || complexProperties.Any()) { #> public <#=code.Escape(complex)#>() { <# foreach (var edmProperty in propertiesWithDefaultValues) { #> this.<#=code.Escape(edmProperty)#> = <#=typeMapper.CreateLiteral(edmProperty.DefaultValue)#>; <# } foreach (var complexProperty in complexProperties) { #> this.<#=code.Escape(complexProperty)#> = new <#=typeMapper.GetTypeName(complexProperty.TypeUsage)#>(); <# } #> } <# } var simpleProperties = typeMapper.GetSimpleProperties(complex); if (simpleProperties.Any()) { foreach(var edmProperty in simpleProperties) { #> <#=codeStringGenerator.Property(edmProperty)#> <# } } if (complexProperties.Any()) { #> <# foreach(var edmProperty in complexProperties) { #> <#=codeStringGenerator.Property(edmProperty)#> <# } } #> } <# EndNamespace(code); } foreach (var enumType in typeMapper.GetEnumItemsToGenerate(itemCollection)) { fileManager.StartNewFile(enumType.Name + ".cs"); BeginNamespace(code); #> <#=codeStringGenerator.UsingDirectives(inHeader: false, includeCollections: false)#> <# if (typeMapper.EnumIsFlags(enumType)) { #> [Flags] <# } #> <#=codeStringGenerator.EnumOpening(enumType)#> { <# var foundOne = false; foreach (MetadataItem member in typeMapper.GetEnumMembers(enumType)) { foundOne = true; #> <#=code.Escape(typeMapper.GetEnumMemberName(member))#> = <#=typeMapper.GetEnumMemberValue(member)#>, <# } if (foundOne) { this.GenerationEnvironment.Remove(this.GenerationEnvironment.Length - 3, 1); } #> } <# EndNamespace(code); } fileManager.Process(); #> <#+ public void WriteHeader(CodeStringGenerator codeStringGenerator, EntityFrameworkTemplateFileManager fileManager) { fileManager.StartHeader(); #> //------------------------------------------------------------------------------ // <auto-generated> // <#=GetResourceString("Template_GeneratedCodeCommentLine1")#> // // <#=GetResourceString("Template_GeneratedCodeCommentLine2")#> // <#=GetResourceString("Template_GeneratedCodeCommentLine3")#> // </auto-generated> //------------------------------------------------------------------------------ <#=codeStringGenerator.UsingDirectives(inHeader: true)#> <#+ fileManager.EndBlock(); } public void BeginNamespace(CodeGenerationTools code) { var codeNamespace = code.VsNamespaceSuggestion(); if (!String.IsNullOrEmpty(codeNamespace)) { #> namespace <#=code.EscapeNamespace(codeNamespace)#> { <#+ PushIndent(" "); } } public void EndNamespace(CodeGenerationTools code) { if (!String.IsNullOrEmpty(code.VsNamespaceSuggestion())) { PopIndent(); #> } <#+ } } public const string TemplateId = "CSharp_DbContext_Types_EF5"; public class CodeStringGenerator { private readonly CodeGenerationTools _code; private readonly TypeMapper _typeMapper; private readonly MetadataTools _ef; public CodeStringGenerator(CodeGenerationTools code, TypeMapper typeMapper, MetadataTools ef) { ArgumentNotNull(code, "code"); ArgumentNotNull(typeMapper, "typeMapper"); ArgumentNotNull(ef, "ef"); _code = code; _typeMapper = typeMapper; _ef = ef; } public string Property(EdmProperty edmProperty) { return string.Format( CultureInfo.InvariantCulture, "{0} {1} {2} {{ {3}get; {4}set; }}", Accessibility.ForProperty(edmProperty), _typeMapper.GetTypeName(edmProperty.TypeUsage), _code.Escape(edmProperty), _code.SpaceAfter(Accessibility.ForGetter(edmProperty)), _code.SpaceAfter(Accessibility.ForSetter(edmProperty))); } public string NavigationProperty(NavigationProperty navigationProperty) { var endType = _typeMapper.GetTypeName(navigationProperty.ToEndMember.GetEntityType()); return string.Format( CultureInfo.InvariantCulture, "{0} {1} {2} {{ {3}get; {4}set; }}", AccessibilityAndVirtual(Accessibility.ForProperty(navigationProperty)), navigationProperty.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many ? ("ICollection<" + endType + ">") : endType, _code.Escape(navigationProperty), _code.SpaceAfter(Accessibility.ForGetter(navigationProperty)), _code.SpaceAfter(Accessibility.ForSetter(navigationProperty))); } public string AccessibilityAndVirtual(string accessibility) { return accessibility + (accessibility != "private" ? " virtual" : ""); } public string EntityClassOpening(EntityType entity) { return string.Format( CultureInfo.InvariantCulture, "{0} {1}partial class {2}{3}", Accessibility.ForType(entity), _code.SpaceAfter(_code.AbstractOption(entity)), _code.Escape(entity), _code.StringBefore(" : ", _typeMapper.GetTypeName(entity.BaseType))); } public string EnumOpening(SimpleType enumType) { return string.Format( CultureInfo.InvariantCulture, "{0} enum {1} : {2}", Accessibility.ForType(enumType), _code.Escape(enumType), _code.Escape(_typeMapper.UnderlyingClrType(enumType))); } public void WriteFunctionParameters(EdmFunction edmFunction, Action<string, string, string, string> writeParameter) { var parameters = FunctionImportParameter.Create(edmFunction.Parameters, _code, _ef); foreach (var parameter in parameters.Where(p => p.NeedsLocalVariable)) { var isNotNull = parameter.IsNullableOfT ? parameter.FunctionParameterName + ".HasValue" : parameter.FunctionParameterName + " != null"; var notNullInit = "new ObjectParameter("" + parameter.EsqlParameterName + "", " + parameter.FunctionParameterName + ")"; var nullInit = "new ObjectParameter("" + parameter.EsqlParameterName + "", typeof(" + parameter.RawClrTypeName + "))"; writeParameter(parameter.LocalVariableName, isNotNull, notNullInit, nullInit); } } public string ComposableFunctionMethod(EdmFunction edmFunction, string modelNamespace) { var parameters = _typeMapper.GetParameters(edmFunction); return string.Format( CultureInfo.InvariantCulture, "{0} IQueryable<{1}> {2}({3})", AccessibilityAndVirtual(Accessibility.ForMethod(edmFunction)), _typeMapper.GetTypeName(_typeMapper.GetReturnType(edmFunction), modelNamespace), _code.Escape(edmFunction), string.Join(", ", parameters.Select(p => p.FunctionParameterType + " " + p.FunctionParameterName).ToArray())); } public string ComposableCreateQuery(EdmFunction edmFunction, string modelNamespace) { var parameters = _typeMapper.GetParameters(edmFunction); return string.Format( CultureInfo.InvariantCulture, "return ((IObjectContextAdapter)this).ObjectContext.CreateQuery<{0}>("[{1}].[{2}]({3})"{4});", _typeMapper.GetTypeName(_typeMapper.GetReturnType(edmFunction), modelNamespace), edmFunction.NamespaceName, edmFunction.Name, string.Join(", ", parameters.Select(p => "@" + p.EsqlParameterName).ToArray()), _code.StringBefore(", ", string.Join(", ", parameters.Select(p => p.ExecuteParameterName).ToArray()))); } public string FunctionMethod(EdmFunction edmFunction, string modelNamespace, bool includeMergeOption) { var parameters = _typeMapper.GetParameters(edmFunction); var returnType = _typeMapper.GetReturnType(edmFunction); var paramList = String.Join(", ", parameters.Select(p => p.FunctionParameterType + " " + p.FunctionParameterName).ToArray()); if (includeMergeOption) { paramList = _code.StringAfter(paramList, ", ") + "MergeOption mergeOption"; } return string.Format( CultureInfo.InvariantCulture, "{0} {1} {2}({3})", AccessibilityAndVirtual(Accessibility.ForMethod(edmFunction)), returnType == null ? "int" : "ObjectResult<" + _typeMapper.GetTypeName(returnType, modelNamespace) + ">", _code.Escape(edmFunction), paramList); } public string ExecuteFunction(EdmFunction edmFunction, string modelNamespace, bool includeMergeOption) { var parameters = _typeMapper.GetParameters(edmFunction); var returnType = _typeMapper.GetReturnType(edmFunction); var callParams = _code.StringBefore(", ", String.Join(", ", parameters.Select(p => p.ExecuteParameterName).ToArray())); if (includeMergeOption) { callParams = ", mergeOption" + callParams; } return string.Format( CultureInfo.InvariantCulture, "return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction{0}("{1}"{2});", returnType == null ? "" : "<" + _typeMapper.GetTypeName(returnType, modelNamespace) + ">", edmFunction.Name, callParams); } public string DbSet(EntitySet entitySet) { return string.Format( CultureInfo.InvariantCulture, "{0} DbSet<{1}> {2} {{ get; set; }}", Accessibility.ForReadOnlyProperty(entitySet), _typeMapper.GetTypeName(entitySet.ElementType), _code.Escape(entitySet)); } public string UsingDirectives(bool inHeader, bool includeCollections = true) { return inHeader == string.IsNullOrEmpty(_code.VsNamespaceSuggestion()) ? string.Format( CultureInfo.InvariantCulture, "{0}using System;{1}" + "{2}", inHeader ? Environment.NewLine : "", includeCollections ? (Environment.NewLine + "using System.Collections.Generic;") : "", inHeader ? "" : Environment.NewLine) : ""; } } public class TypeMapper { private const string ExternalTypeNameAttributeName = @"http://schemas.microsoft.com/ado/2006/04/codegeneration:ExternalTypeName"; private readonly System.Collections.IList _errors; private readonly CodeGenerationTools _code; private readonly MetadataTools _ef; public TypeMapper(CodeGenerationTools code, MetadataTools ef, System.Collections.IList errors) { ArgumentNotNull(code, "code"); ArgumentNotNull(ef, "ef"); ArgumentNotNull(errors, "errors"); _code = code; _ef = ef; _errors = errors; } public string GetTypeName(TypeUsage typeUsage) { return typeUsage == null ? null : GetTypeName(typeUsage.EdmType, _ef.IsNullable(typeUsage), modelNamespace: null); } public string GetTypeName(EdmType edmType) { return GetTypeName(edmType, isNullable: null, modelNamespace: null); } public string GetTypeName(TypeUsage typeUsage, string modelNamespace) { return typeUsage == null ? null : GetTypeName(typeUsage.EdmType, _ef.IsNullable(typeUsage), modelNamespace); } public string GetTypeName(EdmType edmType, string modelNamespace) { return GetTypeName(edmType, isNullable: null, modelNamespace: modelNamespace); } public string GetTypeName(EdmType edmType, bool? isNullable, string modelNamespace) { if (edmType == null) { return null; } var collectionType = edmType as CollectionType; if (collectionType != null) { return String.Format(CultureInfo.InvariantCulture, "ICollection<{0}>", GetTypeName(collectionType.TypeUsage, modelNamespace)); } var typeName = _code.Escape(edmType.MetadataProperties .Where(p => p.Name == ExternalTypeNameAttributeName) .Select(p => (string)p.Value) .FirstOrDefault()) ?? (modelNamespace != null && edmType.NamespaceName != modelNamespace ? _code.CreateFullName(_code.EscapeNamespace(edmType.NamespaceName), _code.Escape(edmType)) : _code.Escape(edmType)); if (edmType is StructuralType) { return typeName; } if (edmType is SimpleType) { var clrType = UnderlyingClrType(edmType); if (!IsEnumType(edmType)) { typeName = _code.Escape(clrType); } return clrType.IsValueType && isNullable == true ? String.Format(CultureInfo.InvariantCulture, "Nullable<{0}>", typeName) : typeName; } throw new ArgumentException("edmType"); } public Type UnderlyingClrType(EdmType edmType) { ArgumentNotNull(edmType, "edmType"); var primitiveType = edmType as PrimitiveType; if (primitiveType != null) { return primitiveType.ClrEquivalentType; } if (IsEnumType(edmType)) { return GetEnumUnderlyingType(edmType).ClrEquivalentType; } return typeof(object); } public object GetEnumMemberValue(MetadataItem enumMember) { ArgumentNotNull(enumMember, "enumMember"); var valueProperty = enumMember.GetType().GetProperty("Value"); return valueProperty == null ? null : valueProperty.GetValue(enumMember, null); } public string GetEnumMemberName(MetadataItem enumMember) { ArgumentNotNull(enumMember, "enumMember"); var nameProperty = enumMember.GetType().GetProperty("Name"); return nameProperty == null ? null : (string)nameProperty.GetValue(enumMember, null); } public System.Collections.IEnumerable GetEnumMembers(EdmType enumType) { ArgumentNotNull(enumType, "enumType"); var membersProperty = enumType.GetType().GetProperty("Members"); return membersProperty != null ? (System.Collections.IEnumerable)membersProperty.GetValue(enumType, null) : Enumerable.Empty<MetadataItem>(); } public bool EnumIsFlags(EdmType enumType) { ArgumentNotNull(enumType, "enumType"); var isFlagsProperty = enumType.GetType().GetProperty("IsFlags"); return isFlagsProperty != null && (bool)isFlagsProperty.GetValue(enumType, null); } public bool IsEnumType(GlobalItem edmType) { ArgumentNotNull(edmType, "edmType"); return edmType.GetType().Name == "EnumType"; } public PrimitiveType GetEnumUnderlyingType(EdmType enumType) { ArgumentNotNull(enumType, "enumType"); return (PrimitiveType)enumType.GetType().GetProperty("UnderlyingType").GetValue(enumType, null); } public string CreateLiteral(object value) { if (value == null || value.GetType() != typeof(TimeSpan)) { return _code.CreateLiteral(value); } return string.Format(CultureInfo.InvariantCulture, "new TimeSpan({0})", ((TimeSpan)value).Ticks); } public bool VerifyCaseInsensitiveTypeUniqueness(IEnumerable<string> types, string sourceFile) { ArgumentNotNull(types, "types"); ArgumentNotNull(sourceFile, "sourceFile"); var hash = new HashSet<string>(StringComparer.InvariantCultureIgnoreCase); if (types.Any(item => !hash.Add(item))) { _errors.Add( new CompilerError(sourceFile, -1, -1, "6023", String.Format(CultureInfo.CurrentCulture, GetResourceString("Template_CaseInsensitiveTypeConflict")))); return false; } return true; } public IEnumerable<SimpleType> GetEnumItemsToGenerate(IEnumerable<GlobalItem> itemCollection) { return GetItemsToGenerate<SimpleType>(itemCollection) .Where(e => IsEnumType(e)); } public IEnumerable<T> GetItemsToGenerate<T>(IEnumerable<GlobalItem> itemCollection) where T: EdmType { return itemCollection .OfType<T>() .Where(i => !i.MetadataProperties.Any(p => p.Name == ExternalTypeNameAttributeName)) .OrderBy(i => i.Name); } public IEnumerable<string> GetAllGlobalItems(IEnumerable<GlobalItem> itemCollection) { return itemCollection .Where(i => i is EntityType || i is ComplexType || i is EntityContainer || IsEnumType(i)) .Select(g => GetGlobalItemName(g)); } public string GetGlobalItemName(GlobalItem item) { if (item is EdmType) { return ((EdmType)item).Name; } else { return ((EntityContainer)item).Name; } } public IEnumerable<EdmProperty> GetSimpleProperties(EntityType type) { return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type); } public IEnumerable<EdmProperty> GetSimpleProperties(ComplexType type) { return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type); } public IEnumerable<EdmProperty> GetComplexProperties(EntityType type) { return type.Properties.Where(p => p.TypeUsage.EdmType is ComplexType && p.DeclaringType == type); } public IEnumerable<EdmProperty> GetComplexProperties(ComplexType type) { return type.Properties.Where(p => p.TypeUsage.EdmType is ComplexType && p.DeclaringType == type); } public IEnumerable<EdmProperty> GetPropertiesWithDefaultValues(EntityType type) { return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type && p.DefaultValue != null); } public IEnumerable<EdmProperty> GetPropertiesWithDefaultValues(ComplexType type) { return type.Properties.Where(p => p.TypeUsage.EdmType is SimpleType && p.DeclaringType == type && p.DefaultValue != null); } public IEnumerable<NavigationProperty> GetNavigationProperties(EntityType type) { return type.NavigationProperties.Where(np => np.DeclaringType == type); } public IEnumerable<NavigationProperty> GetCollectionNavigationProperties(EntityType type) { return type.NavigationProperties.Where(np => np.DeclaringType == type && np.ToEndMember.RelationshipMultiplicity == RelationshipMultiplicity.Many); } public FunctionParameter GetReturnParameter(EdmFunction edmFunction) { ArgumentNotNull(edmFunction, "edmFunction"); var returnParamsProperty = edmFunction.GetType().GetProperty("ReturnParameters"); return returnParamsProperty == null ? edmFunction.ReturnParameter : ((IEnumerable<FunctionParameter>)returnParamsProperty.GetValue(edmFunction, null)).FirstOrDefault(); } public bool IsComposable(EdmFunction edmFunction) { ArgumentNotNull(edmFunction, "edmFunction"); var isComposableProperty = edmFunction.GetType().GetProperty("IsComposableAttribute"); return isComposableProperty != null && (bool)isComposableProperty.GetValue(edmFunction, null); } public IEnumerable<FunctionImportParameter> GetParameters(EdmFunction edmFunction) { return FunctionImportParameter.Create(edmFunction.Parameters, _code, _ef); } public TypeUsage GetReturnType(EdmFunction edmFunction) { var returnParam = GetReturnParameter(edmFunction); return returnParam == null ? null : _ef.GetElementType(returnParam.TypeUsage); } public bool GenerateMergeOptionFunction(EdmFunction edmFunction, bool includeMergeOption) { var returnType = GetReturnType(edmFunction); return !includeMergeOption && returnType != null && returnType.EdmType.BuiltInTypeKind == BuiltInTypeKind.EntityType; } } public class EdmMetadataLoader { private readonly IDynamicHost _host; private readonly System.Collections.IList _errors; public EdmMetadataLoader(IDynamicHost host, System.Collections.IList errors) { ArgumentNotNull(host, "host"); ArgumentNotNull(errors, "errors"); _host = host; _errors = errors; } public IEnumerable<GlobalItem> CreateEdmItemCollection(string sourcePath) { ArgumentNotNull(sourcePath, "sourcePath"); if (!ValidateInputPath(sourcePath)) { return new EdmItemCollection(); } var schemaElement = LoadRootElement(_host.ResolvePath(sourcePath)); if (schemaElement != null) { using (var reader = schemaElement.CreateReader()) { IList<EdmSchemaError> errors; var itemCollection = MetadataItemCollectionFactory.CreateEdmItemCollection(new[] { reader }, out errors); ProcessErrors(errors, sourcePath); return itemCollection; } } return new EdmItemCollection(); } public string GetModelNamespace(string sourcePath) { ArgumentNotNull(sourcePath, "sourcePath"); if (!ValidateInputPath(sourcePath)) { return string.Empty; } var model = LoadRootElement(_host.ResolvePath(sourcePath)); if (model == null) { return string.Empty; } var attribute = model.Attribute("Namespace"); return attribute != null ? attribute.Value : ""; } private bool ValidateInputPath(string sourcePath) { if (sourcePath == "$" + "edmxInputFile" + "$") { _errors.Add( new CompilerError(_host.TemplateFile ?? sourcePath, 0, 0, string.Empty, GetResourceString("Template_ReplaceVsItemTemplateToken"))); return false; } return true; } public XElement LoadRootElement(string sourcePath) { ArgumentNotNull(sourcePath, "sourcePath"); var root = XElement.Load(sourcePath, LoadOptions.SetBaseUri | LoadOptions.SetLineInfo); return root.Elements() .Where(e => e.Name.LocalName == "Runtime") .Elements() .Where(e => e.Name.LocalName == "ConceptualModels") .Elements() .Where(e => e.Name.LocalName == "Schema") .FirstOrDefault() ?? root; } private void ProcessErrors(IEnumerable<EdmSchemaError> errors, string sourceFilePath) { foreach (var error in errors) { _errors.Add( new CompilerError( error.SchemaLocation ?? sourceFilePath, error.Line, error.Column, error.ErrorCode.ToString(CultureInfo.InvariantCulture), error.Message) { IsWarning = error.Severity == EdmSchemaErrorSeverity.Warning }); } } public bool IsLazyLoadingEnabled(EntityContainer container) { string lazyLoadingAttributeValue; var lazyLoadingAttributeName = MetadataConstants.EDM_ANNOTATION_09_02 + ":LazyLoadingEnabled"; bool isLazyLoading; return !MetadataTools.TryGetStringMetadataPropertySetting(container, lazyLoadingAttributeName, out lazyLoadingAttributeValue) || !bool.TryParse(lazyLoadingAttributeValue, out isLazyLoading) || isLazyLoading; } } public static void ArgumentNotNull<T>(T arg, string name) where T : class { if (arg == null) { throw new ArgumentNullException(name); } } private static readonly Lazy<System.Resources.ResourceManager> ResourceManager = new Lazy<System.Resources.ResourceManager>( () => new System.Resources.ResourceManager("System.Data.Entity.Design", typeof(MetadataItemCollectionFactory).Assembly), isThreadSafe: true); public static string GetResourceString(string resourceName) { ArgumentNotNull(resourceName, "resourceName"); return ResourceManager.Value.GetString(resourceName, null); } #>