private void DisallowReturnTypeChange(CodeTypeReference baseType, CodeTypeReference newType)
{
if (Helper.IsCollectionType(Item.TypeUsage.EdmType) && GetCollectionKind(Item.TypeUsage) != CollectionKind.None)
{
if (newType == null)
{
throw EDesignUtil.InvalidOperation(Strings.CannotChangePropertyReturnTypeToNull(Item.Name, Item.DeclaringType.Name));
}
// you can change the return type of collection properties
// we don't even need to check
return;
}
if (!(baseType == null && newType == null) &&
(
(baseType != null && !baseType.Equals(newType)) ||
(newType != null && !newType.Equals(baseType))
)
)
{
throw EDesignUtil.InvalidOperation(Strings.CannotChangePropertyReturnType(Item.Name, Item.DeclaringType.Name));
}
}
private static Type CreateCodeGeneratorType(System.CodeDom.Compiler.CodeDomProvider compilerProvider, string resourceName, string typeName)
{
string sourceCode = null;
using (Stream sourceStream = Assembly.GetExecutingAssembly().GetManifestResourceStream(resourceName))
using (StreamReader reader = new StreamReader(sourceStream))
{
sourceCode = reader.ReadToEnd();
}
CompilerParameters compilerParams = new CompilerParameters();
compilerParams.CompilerOptions = "/d:PREPROCESSED_TEMPLATE";
compilerParams.GenerateInMemory = true;
compilerParams.GenerateExecutable = false;
// grab the assemblies by location so that we don't compile against one that we didn't reference
compilerParams.ReferencedAssemblies.AddRange(new string[] {
typeof(System.CodeDom.Compiler.CodeDomProvider).Assembly.Location, // System.dll
typeof(System.Linq.Enumerable).Assembly.Location, // System.Core.dll
typeof(System.Data.Objects.ObjectContext).Assembly.Location, // System.Data.Entity.dll
typeof(System.Data.Entity.Design.EntityCodeGenerator).Assembly.Location, // System.Data.Entity.Design.dll
typeof(System.Data.DbType).Assembly.Location, // System.Data.dll
typeof(System.Xml.XmlAttribute).Assembly.Location, // System.Xml.dll
typeof(System.Xml.Linq.XElement).Assembly.Location, // System.Xml.Linq.dll
});
#if !ENABLE_TEMPLATE_DEBUGGING
CompilerResults results = compilerProvider.CompileAssemblyFromSource(compilerParams, sourceCode);
#else
// enables debugging
compilerParams.GenerateInMemory = false;
compilerParams.IncludeDebugInformation = true;
string baseName = Path.GetFileNameWithoutExtension(Path.GetTempFileName()) + ".";
compilerParams.OutputAssembly = Path.Combine(Path.GetTempPath(), baseName + typeName + ".Assembly.dll");
string sourceFileName = Path.Combine(Path.GetTempPath(), baseName + typeName + ".Source." + compilerProvider.FileExtension);
File.WriteAllText(sourceFileName, sourceCode);
CompilerResults results = compilerProvider.CompileAssemblyFromFile(compilerParams, sourceFileName);
#warning DO NOT CHECK IN LIKE THIS, Dynamic Assembly Debugging is enabled
#endif
if (results.Errors.HasErrors)
{
string message = results.Errors.OfType <CompilerError>().Aggregate(string.Empty, (accumulated, input) => accumulated == string.Empty ? input.ToString() : accumulated + Environment.NewLine + input.ToString());
throw EDesignUtil.InvalidOperation(message);
}
return(results.CompiledAssembly.GetType(typeName));
}
private CodeMemberProperty CreateEntitySetProperty(EntitySet set)
{
Debug.Assert(set != null, "Property is Null");
// trying to get
//
// [System.ComponentModel.Browsable(false)]
// public ObjectQuery<Customer> Customers
// {
// get
// {
// if ((this._Customers == null))
// {
// this._Customers = base.CreateQuery<Customer>("[Customers]");
// }
// return this._Customers;
// }
// }
//
CodeMemberProperty codeProperty = new CodeMemberProperty();
Generator.AttributeEmitter.EmitGeneratedCodeAttribute(codeProperty);
codeProperty.Attributes = MemberAttributes.Final | GetEntitySetPropertyAccessibility(set);
codeProperty.Name = set.Name;
codeProperty.HasGet = true;
codeProperty.HasSet = false;
// Determine type to use for field/property and name of factory method on ObjectContext
string typeName = "ObjectQuery";
string createMethodName = "CreateQuery";
// When the EntitySet name is used as CommandText, it should be quoted
string createMethodArgument = "[" + set.Name + "]";
CodeTypeReference genericParameter = Generator.GetLeastPossibleQualifiedTypeReference(set.ElementType);
codeProperty.Type = TypeReference.AdoFrameworkGenericClass(typeName, genericParameter);
string fieldName = Utils.FieldNameFromPropName(set.Name);
// raise the PropertyGenerated event before proceeding further
PropertyGeneratedEventArgs eventArgs = new PropertyGeneratedEventArgs(set, fieldName, codeProperty.Type);
Generator.RaisePropertyGeneratedEvent(eventArgs);
if (eventArgs.ReturnType == null || !eventArgs.ReturnType.Equals(codeProperty.Type))
{
throw EDesignUtil.InvalidOperation(Strings.CannotChangePropertyReturnType(set.Name, Item.Name));
}
List <CodeAttributeDeclaration> additionalAttributes = eventArgs.AdditionalAttributes;
if (additionalAttributes != null && additionalAttributes.Count > 0)
{
try
{
codeProperty.CustomAttributes.AddRange(additionalAttributes.ToArray());
}
catch (ArgumentNullException e)
{
Generator.AddError(Strings.InvalidAttributeSuppliedForProperty(Item.Name),
ModelBuilderErrorCode.InvalidAttributeSuppliedForProperty,
EdmSchemaErrorSeverity.Error,
e);
}
}
// we need to insert user-specified code before other/existing code, including
// the return statement
List <CodeStatement> additionalGetStatements = eventArgs.AdditionalGetStatements;
if (additionalGetStatements != null && additionalGetStatements.Count > 0)
{
try
{
codeProperty.GetStatements.AddRange(additionalGetStatements.ToArray());
}
catch (ArgumentNullException e)
{
Generator.AddError(Strings.InvalidGetStatementSuppliedForProperty(Item.Name),
ModelBuilderErrorCode.InvalidGetStatementSuppliedForProperty,
EdmSchemaErrorSeverity.Error,
e);
}
}
codeProperty.GetStatements.Add(
new CodeConditionStatement(
EmitExpressionEqualsNull(new CodeFieldReferenceExpression(ThisRef, fieldName)),
new CodeAssignStatement(
new CodeFieldReferenceExpression(ThisRef, fieldName),
new CodeMethodInvokeExpression(
new CodeMethodReferenceExpression(
new CodeBaseReferenceExpression(),
createMethodName,
new CodeTypeReference[] { genericParameter }
),
new CodePrimitiveExpression(createMethodArgument)
)
)
)
);
codeProperty.GetStatements.Add(
new CodeMethodReturnStatement(
new CodeFieldReferenceExpression(
ThisRef,
fieldName
)
)
);
// property summary
CommentEmitter.EmitSummaryComments(set, codeProperty.Comments);
return(codeProperty);
}
private void GenerateCodeCommon(MetadataArtifactLoader sourceLoader,
List <MetadataArtifactLoader> loaders,
LazyTextWriterCreator target,
string sourceEdmSchemaFilePath,
string targetFilePath,
bool closeReaders,
List <EdmSchemaError> errors)
{
MetadataArtifactLoaderComposite composite = new MetadataArtifactLoaderComposite(loaders);
// create the schema manager from the xml readers
Dictionary <MetadataArtifactLoader, XmlReader> readerSourceMap = new Dictionary <MetadataArtifactLoader, XmlReader>();
IList <Schema> schemas;
List <XmlReader> readers = composite.GetReaders(readerSourceMap);
try
{
IList <EdmSchemaError> schemaManagerErrors =
SchemaManager.ParseAndValidate(readers,
composite.GetPaths(),
SchemaDataModelOption.EntityDataModel,
EdmProviderManifest.Instance,
out schemas);
errors.AddRange(schemaManagerErrors);
}
finally
{
if (closeReaders)
{
MetadataUtil.DisposeXmlReaders(readers);
}
}
ThrowOnAnyNonWarningErrors(errors);
Debug.Assert(readerSourceMap.ContainsKey(sourceLoader), "the source loader didn't produce any of the xml readers...");
XmlReader sourceReader = readerSourceMap[sourceLoader];
// use the index of the "source" xml reader as the index of the "source" schema
Debug.Assert(readers.Contains(sourceReader), "the source reader is not in the list of readers");
int index = readers.IndexOf(sourceReader);
Debug.Assert(index >= 0, "couldn't find the source reader in the list of readers");
Debug.Assert(readers.Count == schemas.Count, "We have a different number of readers than schemas");
Schema sourceSchema = schemas[index];
Debug.Assert(sourceSchema != null, "sourceSchema is null");
// create the EdmItemCollection from the schemas
EdmItemCollection itemCollection = new EdmItemCollection(schemas);
if (EntityFrameworkVersionsUtil.ConvertToVersion(itemCollection.EdmVersion) >= EntityFrameworkVersions.Version2)
{
throw EDesignUtil.InvalidOperation(Strings.TargetEntityFrameworkVersionToNewForEntityClassGenerator);
}
// generate code
ClientApiGenerator generator = new ClientApiGenerator(sourceSchema, itemCollection, this, errors);
generator.GenerateCode(target, targetFilePath);
}
