Ejemplo n.º 1
0
        private IList <EdmSchemaError> InternalGenerateCode(string sourceEdmSchemaFilePath, Version schemaVersion, LazyTextWriterCreator textWriter, IEnumerable <string> additionalEdmSchemaFilePaths, Version targetFrameworkVersion)
        {
            List <EdmSchemaError> errors = new List <EdmSchemaError>();

            try
            {
                if (targetFrameworkVersion == EntityFrameworkVersions.Version1)
                {
                    errors.Add(new EdmSchemaError(Strings.EntityCodeGenTargetTooLow, (int)ModelBuilderErrorCode.TargetVersionNotSupported, EdmSchemaErrorSeverity.Error));
                    return(errors);
                }

                if (!MetadataItemCollectionFactory.ValidateActualVersionAgainstTarget(targetFrameworkVersion, schemaVersion, errors))
                {
                    return(errors);
                }

                if (schemaVersion == EntityFrameworkVersions.EdmVersion1_1)
                {
                    return(GenerateCodeFor1_1Schema(sourceEdmSchemaFilePath, textWriter, additionalEdmSchemaFilePaths));
                }

                ReflectionAdapter codeGenerator = ReflectionAdapter.Create(_languageOption, targetFrameworkVersion);
                codeGenerator.SourceCsdlPath          = sourceEdmSchemaFilePath;
                codeGenerator.ReferenceCsdlPaths      = additionalEdmSchemaFilePaths;
                codeGenerator.EdmToObjectNamespaceMap = _edmToObjectNamespaceMap.AsDictionary();

                string code = codeGenerator.TransformText();

                if (codeGenerator.Errors.Count != 0)
                {
                    ModelBuilderErrorCode errorCode = ModelBuilderErrorCode.PreprocessTemplateTransformationError;
                    errors.AddRange(codeGenerator.Errors.OfType <CompilerError>().Select(c => ConvertToEdmSchemaError(c, errorCode)));

                    if (codeGenerator.Errors.HasErrors)
                    {
                        return(errors);
                    }
                }

                using (TextWriter writer = textWriter.GetOrCreateTextWriter())
                {
                    writer.Write(code);
                }
            }
            catch (System.UnauthorizedAccessException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.SecurityError, ex));
            }
            catch (System.IO.FileNotFoundException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.FileNotFound, ex));
            }
            catch (System.Security.SecurityException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.SecurityError, ex));
            }
            catch (System.IO.DirectoryNotFoundException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.DirectoryNotFound, ex));
            }
            catch (System.IO.IOException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.IOException, ex));
            }
            catch (Exception e)
            {
                if (MetadataUtil.IsCatchableExceptionType(e))
                {
                    errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.PreprocessTemplateTransformationError, e, sourceEdmSchemaFilePath));
                }
                else
                {
                    throw;
                }
            }

            return(errors);
        }
Ejemplo n.º 2
0
        private IList <EdmSchemaError> GenerateCodeFor1_1Schema(string sourceEdmSchemaFilePath, LazyTextWriterCreator textWriter, IEnumerable <string> additionalEdmSchemaFilePaths)
        {
            EntityClassGenerator generator = new EntityClassGenerator(_languageOption);
            string target        = textWriter.TargetFilePath;
            bool   cleanUpTarget = false;

            try
            {
                if (textWriter.IsUserSuppliedTextWriter)
                {
                    cleanUpTarget = true;
                    target        = Path.Combine(Path.GetTempPath(), Path.GetTempFileName());
                }

                IList <EdmSchemaError> errors = generator.GenerateCode(sourceEdmSchemaFilePath, target, additionalEdmSchemaFilePaths != null ? additionalEdmSchemaFilePaths : Enumerable.Empty <string>());

                if (textWriter.IsUserSuppliedTextWriter && !errors.Any(e => e.Severity == EdmSchemaErrorSeverity.Error))
                {
                    textWriter.GetOrCreateTextWriter().Write(File.ReadAllText(target));
                }

                return(errors);
            }
            finally
            {
                if (cleanUpTarget && target != null && File.Exists(target))
                {
                    File.Delete(target);
                }
            }
        }
        [ResourceConsumption(ResourceScope.Machine, ResourceScope.Machine)] //For Path.GetTempPath method. 
                                                                            //We use tha path to create a temp file stream which is consistent with the resource consumption of machine.

        internal void GenerateCode(LazyTextWriterCreator target, string targetLocation)
        {
            Debug.Assert(target != null, "target parameter is null");

            IndentedTextWriter indentedTextWriter = null;
            System.IO.Stream tempFileStream = null;
            System.IO.StreamReader reader = null;
            System.IO.StreamWriter writer = null;
            TempFileCollection tempFiles = null;
            try
            {
                CodeDomProvider provider = null;
                switch (Language)
                {
                    case LanguageOption.GenerateCSharpCode:
                        provider = new Microsoft.CSharp.CSharpCodeProvider();
                        break;

                    case LanguageOption.GenerateVBCode:
                        provider = new Microsoft.VisualBasic.VBCodeProvider();
                        break;
                }

                _isLanguageCaseSensitive = (provider.LanguageOptions & LanguageOptions.CaseInsensitive) == 0;

                new NamespaceEmitter(this, _codeNamespace, target.TargetFilePath).Emit();

                // if there were errors we don't need the output file
                if (RealErrorsExist)
                {
                    return;
                }

                if (FixUps.Count == 0 || !FixUpCollection.IsLanguageSupported(Language))
                {
                    indentedTextWriter = new IndentedTextWriter(target.GetOrCreateTextWriter(), "\t");
                }
                else
                {
                    // need to write to a temporary file so we can do fixups...
                    tempFiles = new TempFileCollection(Path.GetTempPath());
                    string filename = Path.Combine(tempFiles.TempDir, "EdmCodeGenFixup-" + Guid.NewGuid().ToString() + ".tmp");
                    tempFiles.AddFile(filename, false);
                    tempFileStream = new System.IO.FileStream(filename, System.IO.FileMode.CreateNew, System.IO.FileAccess.ReadWrite,
                        System.IO.FileShare.None);
                    indentedTextWriter = new IndentedTextWriter(new System.IO.StreamWriter(tempFileStream), "\t");
                }

                CodeGeneratorOptions styleOptions = new CodeGeneratorOptions();
                styleOptions.BracingStyle = "C";
                styleOptions.BlankLinesBetweenMembers = false;
                styleOptions.VerbatimOrder = true;
                provider.GenerateCodeFromCompileUnit(CompileUnit, indentedTextWriter, styleOptions);

                // if we wrote to a temp file need to post process the file...
                if (tempFileStream != null)
                {
                    indentedTextWriter.Flush();
                    tempFileStream.Seek(0, System.IO.SeekOrigin.Begin);
                    reader = new System.IO.StreamReader(tempFileStream);
                    FixUps.Do(reader, target.GetOrCreateTextWriter(), Language, SourceObjectNamespaceName != string.Empty);
                }
            }
            catch (System.UnauthorizedAccessException ex)
            {
                AddError(ModelBuilderErrorCode.SecurityError, EdmSchemaErrorSeverity.Error, ex);
            }
            catch (System.IO.FileNotFoundException ex)
            {
                AddError(ModelBuilderErrorCode.FileNotFound, EdmSchemaErrorSeverity.Error, ex);
            }
            catch (System.Security.SecurityException ex)
            {
                AddError(ModelBuilderErrorCode.SecurityError, EdmSchemaErrorSeverity.Error, ex);
            }
            catch (System.IO.DirectoryNotFoundException ex)
            {
                AddError(ModelBuilderErrorCode.DirectoryNotFound, EdmSchemaErrorSeverity.Error, ex);
            }
            catch (System.IO.IOException ex)
            {
                AddError(ModelBuilderErrorCode.IOException, EdmSchemaErrorSeverity.Error, ex);
            }
            finally
            {
                if (indentedTextWriter != null)
                {
                    indentedTextWriter.Close();
                }
                if (tempFileStream != null)
                {
                    tempFileStream.Close();
                }
                if (tempFiles != null)
                {
                    tempFiles.Delete();
                    ((IDisposable)tempFiles).Dispose();
                }
                if (reader != null)
                {
                    reader.Close();
                }
                if (writer != null)
                {
                    writer.Close();
                }
            }
        }
Ejemplo n.º 4
0
        // this overload is for entry points that don't pass in readers, so we need to actually create a reader to get the schemaVersion out
        private IList <EdmSchemaError> InternalGenerateCode(string sourceEdmSchemaFilePath, LazyTextWriterCreator textWriter, IEnumerable <string> additionalEdmSchemaFilePaths, Version targetFrameworkVersion)
        {
            // do this check to maintain backwards compatibility with the behavior shipped in
            // framework v4
            if (!File.Exists(sourceEdmSchemaFilePath))
            {
                return(new List <EdmSchemaError>()
                {
                    new EdmSchemaError(Strings.EdmSchemaFileNotFound(sourceEdmSchemaFilePath), (int)ModelBuilderErrorCode.FileNotFound, EdmSchemaErrorSeverity.Error, sourceEdmSchemaFilePath, 0, 0)
                });
            }

            using (XmlReader reader = XmlReader.Create(sourceEdmSchemaFilePath))
            {
                Version schemaVersion;
                if (!IsValidSchema(reader, out schemaVersion))
                {
                    return(new List <EdmSchemaError>()
                    {
                        CreateSourceEdmSchemaNotValidError()
                    });
                }

                return(InternalGenerateCode(sourceEdmSchemaFilePath, schemaVersion, textWriter, additionalEdmSchemaFilePaths, targetFrameworkVersion));
            }
        }
Ejemplo n.º 5
0
        private IList<EdmSchemaError> InternalGenerateCode(string sourceEdmSchemaFilePath, Version schemaVersion, LazyTextWriterCreator textWriter, IEnumerable<string> additionalEdmSchemaFilePaths, Version targetFrameworkVersion)
        {
            List<EdmSchemaError> errors = new List<EdmSchemaError>();
            try
            {
                if (targetFrameworkVersion == EntityFrameworkVersions.Version1)
                {
                    errors.Add(new EdmSchemaError(Strings.EntityCodeGenTargetTooLow, (int)ModelBuilderErrorCode.TargetVersionNotSupported, EdmSchemaErrorSeverity.Error));
                    return errors;
                }

                if (!MetadataItemCollectionFactory.ValidateActualVersionAgainstTarget(targetFrameworkVersion, schemaVersion, errors))
                {
                    return errors;
                }

                if (schemaVersion == EntityFrameworkVersions.EdmVersion1_1)
                {
                    return GenerateCodeFor1_1Schema(sourceEdmSchemaFilePath, textWriter, additionalEdmSchemaFilePaths);
                }

                ReflectionAdapter codeGenerator = ReflectionAdapter.Create(_languageOption, targetFrameworkVersion);
                codeGenerator.SourceCsdlPath = sourceEdmSchemaFilePath;
                codeGenerator.ReferenceCsdlPaths = additionalEdmSchemaFilePaths;
                codeGenerator.EdmToObjectNamespaceMap = _edmToObjectNamespaceMap.AsDictionary();

                string code = codeGenerator.TransformText();

                if (codeGenerator.Errors.Count != 0)
                {
                    ModelBuilderErrorCode errorCode = ModelBuilderErrorCode.PreprocessTemplateTransformationError;
                    errors.AddRange(codeGenerator.Errors.OfType<CompilerError>().Select(c => ConvertToEdmSchemaError(c, errorCode)));

                    if (codeGenerator.Errors.HasErrors)
                        return errors;
                }

                using (TextWriter writer = textWriter.GetOrCreateTextWriter())
                {
                    writer.Write(code);
                }
            }
            catch (System.UnauthorizedAccessException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.SecurityError, ex));
            }
            catch (System.IO.FileNotFoundException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.FileNotFound, ex));
            }
            catch (System.Security.SecurityException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.SecurityError, ex));
            }
            catch (System.IO.DirectoryNotFoundException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.DirectoryNotFound, ex));
            }
            catch (System.IO.IOException ex)
            {
                errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.IOException, ex));
            }
            catch (Exception e)
            {
                if (MetadataUtil.IsCatchableExceptionType(e))
                {
                    errors.Add(EntityClassGenerator.CreateErrorForException(ModelBuilderErrorCode.PreprocessTemplateTransformationError, e, sourceEdmSchemaFilePath));
                }
                else
                {
                    throw;
                }
            }

            return errors;
        }
Ejemplo n.º 6
0
        private IList<EdmSchemaError> GenerateCodeFor1_1Schema(string sourceEdmSchemaFilePath, LazyTextWriterCreator textWriter, IEnumerable<string> additionalEdmSchemaFilePaths)
        {
            EntityClassGenerator generator = new EntityClassGenerator(_languageOption);
            string target = textWriter.TargetFilePath;
            bool cleanUpTarget = false;
            try
            {
                if (textWriter.IsUserSuppliedTextWriter)
                {
                    cleanUpTarget = true;
                    target = Path.Combine(Path.GetTempPath(), Path.GetTempFileName());

                }

                IList<EdmSchemaError> errors = generator.GenerateCode(sourceEdmSchemaFilePath, target, additionalEdmSchemaFilePaths != null ? additionalEdmSchemaFilePaths : Enumerable.Empty<string>());

                if (textWriter.IsUserSuppliedTextWriter && !errors.Any(e => e.Severity == EdmSchemaErrorSeverity.Error))
                {
                    textWriter.GetOrCreateTextWriter().Write(File.ReadAllText(target));
                }

                return errors;
            }
            finally
            {
                if (cleanUpTarget && target != null && File.Exists(target))
                {
                    File.Delete(target);
                }
            }

        }
Ejemplo n.º 7
0
        // this overload is for entry points that don't pass in readers, so we need to actually create a reader to get the schemaVersion out
        private IList<EdmSchemaError> InternalGenerateCode(string sourceEdmSchemaFilePath, LazyTextWriterCreator textWriter, IEnumerable<string> additionalEdmSchemaFilePaths, Version targetFrameworkVersion)
        {
            // do this check to maintain backwards compatibility with the behavior shipped in 
            // framework v4
            if (!File.Exists(sourceEdmSchemaFilePath))
            {
                return new List<EdmSchemaError>() { new EdmSchemaError(Strings.EdmSchemaFileNotFound(sourceEdmSchemaFilePath), (int)ModelBuilderErrorCode.FileNotFound, EdmSchemaErrorSeverity.Error, sourceEdmSchemaFilePath, 0, 0) };
            }

            using (XmlReader reader = XmlReader.Create(sourceEdmSchemaFilePath))
            {
                Version schemaVersion;
                if (!IsValidSchema(reader, out schemaVersion))
                {
                    return new List<EdmSchemaError>() { CreateSourceEdmSchemaNotValidError() };
                }

                return InternalGenerateCode(sourceEdmSchemaFilePath, schemaVersion, textWriter, additionalEdmSchemaFilePaths, targetFrameworkVersion);
            }
        }
Ejemplo n.º 8
0
        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);
        }
Ejemplo n.º 9
0
        [ResourceConsumption(ResourceScope.Machine)] //For MetadataArtifactLoader.Create method call. But the path is not created in this method.
        public IList <EdmSchemaError> GenerateCode(string sourceEdmSchemaFilePath, string targetPath, IEnumerable <string> additionalEdmSchemaFilePaths)
        {
            EDesignUtil.CheckStringArgument(sourceEdmSchemaFilePath, "sourceEdmSchemaFilePath");
            EDesignUtil.CheckArgumentNull(additionalEdmSchemaFilePaths, "additionalEdmSchemaFilePaths");
            EDesignUtil.CheckStringArgument(targetPath, "targetPath");

            List <EdmSchemaError> errors = new List <EdmSchemaError>();

            try
            {
                // create a loader for the source
                HashSet <string>       uriRegistry = new HashSet <string>();
                MetadataArtifactLoader sourceLoader;
                try
                {
                    sourceLoader = MetadataArtifactLoader.Create(sourceEdmSchemaFilePath, MetadataArtifactLoader.ExtensionCheck.Specific,
                                                                 XmlConstants.CSpaceSchemaExtension, uriRegistry);
                }
                catch (MetadataException e)
                {
                    errors.Add(CreateErrorForException(ModelBuilderErrorCode.CodeGenSourceFilePathIsInvalid, e, sourceEdmSchemaFilePath));
                    return(errors);
                }

                if (sourceLoader.IsComposite)
                {
                    throw new ArgumentException(Strings.CodeGenSourceFilePathIsNotAFile, "sourceEdmSchemaPath");
                }

                // create loaders for all the additional schemas
                List <MetadataArtifactLoader> loaders = new List <MetadataArtifactLoader>();
                loaders.Add(sourceLoader);
                int index = 0;
                foreach (string additionalSchemaFilePath in additionalEdmSchemaFilePaths)
                {
                    if (additionalSchemaFilePath == null)
                    {
                        throw EDesignUtil.Argument(Strings.NullAdditionalSchema("additionalEdmSchemaFilePaths", index));
                    }

                    try
                    {
                        MetadataArtifactLoader loader = MetadataArtifactLoader.Create(additionalSchemaFilePath,
                                                                                      MetadataArtifactLoader.ExtensionCheck.Specific,
                                                                                      XmlConstants.CSpaceSchemaExtension, uriRegistry);
                        Debug.Assert(loader != null, "when is the loader ever null?");
                        loaders.Add(loader);
                    }
                    catch (Exception e)
                    {
                        if (MetadataUtil.IsCatchableExceptionType(e))
                        {
                            errors.Add(CreateErrorForException(ModelBuilderErrorCode.CodeGenAdditionalEdmSchemaIsInvalid, e, additionalSchemaFilePath));
                        }
                        else
                        {
                            throw;
                        }
                    }
                    index++;
                }

                ThrowOnAnyNonWarningErrors(errors);
                try
                {
                    using (LazyTextWriterCreator target = new LazyTextWriterCreator(targetPath))
                    {
                        GenerateCodeCommon(sourceLoader, loaders, target, sourceEdmSchemaFilePath, targetPath,
                                           true, // dispose readers
                                           errors);
                    }
                }
                catch (System.IO.IOException ex)
                {
                    errors.Add(CreateErrorForException(System.Data.EntityModel.SchemaObjectModel.ErrorCode.IOException, ex, targetPath));
                    return(errors);
                }
            }
            catch (TerminalErrorException)
            {
                // do nothing
                // just a place to jump when errors are detected
            }
            return(errors);
        }
Ejemplo n.º 10
0
        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);
        }
Ejemplo n.º 11
0
        [ResourceConsumption(ResourceScope.Machine)] //For MetadataArtifactLoader.Create method call. But the path is not created in this method.
        public IList<EdmSchemaError> GenerateCode(string sourceEdmSchemaFilePath, string targetPath, IEnumerable<string> additionalEdmSchemaFilePaths)
        {
            EDesignUtil.CheckStringArgument(sourceEdmSchemaFilePath, "sourceEdmSchemaFilePath");
            EDesignUtil.CheckArgumentNull(additionalEdmSchemaFilePaths, "additionalEdmSchemaFilePaths");
            EDesignUtil.CheckStringArgument(targetPath, "targetPath");

            List<EdmSchemaError> errors = new List<EdmSchemaError>();
            try
            {
                // create a loader for the source
                HashSet<string> uriRegistry = new HashSet<string>();
                MetadataArtifactLoader sourceLoader;
                try
                {
                    sourceLoader = MetadataArtifactLoader.Create(sourceEdmSchemaFilePath, MetadataArtifactLoader.ExtensionCheck.Specific,
                        XmlConstants.CSpaceSchemaExtension, uriRegistry);
                }
                catch (MetadataException e)
                {
                    errors.Add(CreateErrorForException(ModelBuilderErrorCode.CodeGenSourceFilePathIsInvalid, e, sourceEdmSchemaFilePath));
                    return errors;
                }

                if (sourceLoader.IsComposite)
                {
                    throw new ArgumentException(Strings.CodeGenSourceFilePathIsNotAFile, "sourceEdmSchemaPath");
                }

                // create loaders for all the additional schemas
                List<MetadataArtifactLoader> loaders = new List<MetadataArtifactLoader>();
                loaders.Add(sourceLoader);
                int index = 0;
                foreach (string additionalSchemaFilePath in additionalEdmSchemaFilePaths)
                {
                    if (additionalSchemaFilePath == null)
                    {
                        throw EDesignUtil.Argument(Strings.NullAdditionalSchema("additionalEdmSchemaFilePaths", index));
                    }

                    try
                    {
                        MetadataArtifactLoader loader = MetadataArtifactLoader.Create(additionalSchemaFilePath,
                            MetadataArtifactLoader.ExtensionCheck.Specific,
                            XmlConstants.CSpaceSchemaExtension, uriRegistry);
                        Debug.Assert(loader != null, "when is the loader ever null?");
                        loaders.Add(loader);
                    }
                    catch (Exception e)
                    {
                        if(MetadataUtil.IsCatchableExceptionType(e))
                        {
                            errors.Add(CreateErrorForException(ModelBuilderErrorCode.CodeGenAdditionalEdmSchemaIsInvalid, e, additionalSchemaFilePath));
                        }
                        else
                        {
                            throw;
                        }
                    }
                    index++;
                }

                ThrowOnAnyNonWarningErrors(errors);
                try
                {
                    using (LazyTextWriterCreator target = new LazyTextWriterCreator(targetPath))
                    {
                        GenerateCodeCommon(sourceLoader, loaders, target, sourceEdmSchemaFilePath, targetPath,
                            true, // dispose readers
                            errors);
                    }
                }
                catch (System.IO.IOException ex)
                {
                    errors.Add(CreateErrorForException(System.Data.EntityModel.SchemaObjectModel.ErrorCode.IOException, ex, targetPath));
                    return errors;
                }
            }
            catch (TerminalErrorException)
            {
                // do nothing
                // just a place to jump when errors are detected
            }
            return errors;
        }