internal static Func <IDataRecord, object> CreateFactory(
DbClassInfoCache target,
FactoryHelperSettings settings)
{
var generator = ClassInfoGenerator.SuperClass(target);
generator.Namespace = target.Type.Namespace;
if (target.Constructors.Any(f => f.Arguments.Any()))
{
throw new TypeAccessException(
string.Format("Target type '{0}' does not define an public not " +
"parameterizable constructor. POCO's!!!!", target.Name));
}
var cp = new CompilerParameters();
cp.GenerateInMemory = true;
//if (settings.FileCollisonDetection == CollisonDetectionMode.Pessimistic)
//{
// cp.OutputAssembly =
// Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)
// + @"\"
// + Guid.NewGuid().ToString("N")
// + "_Poco.dll";
//}
//else
//{
// cp.OutputAssembly =
// Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location)
// + @"\" + target.Type.FullName
// + "_Poco.dll";
//}
//settings.TempFileData.Add(cp.OutputAssembly);
ConstructorInfo[] constructorInfos = null;
TypeInfo targetType = null;
//if (File.Exists(cp.OutputAssembly) && settings.FileCollisonDetection == CollisonDetectionMode.Optimistic)
//{
// var bufferAssam = Assembly.Load(cp.OutputAssembly);
// targetType = target.Type.GetTypeInfo();
// var type = bufferAssam.DefinedTypes.FirstOrDefault(s => s == targetType);
// if (targetType != null)
// {
// constructorInfos = targetType.GetConstructors();
// }
// if (constructorInfos == null)
// {
// throw new Exception(
// string.Format(
// "A dll with a matching name for type: {0} was found and the FileCollisonDetection is Optimistic but no matching Constuctors where found",
// type.Name));
// }
//}
if (constructorInfos == null)
{
var callingAssm = Assembly.GetEntryAssembly();
if (callingAssm == null)
{
callingAssm = Assembly.GetExecutingAssembly();
}
if (settings.CreateDebugCode)
{
cp.TempFiles = new TempFileCollection(Path.GetDirectoryName(callingAssm.Location), true);
cp.GenerateInMemory = false;
cp.TempFiles.KeepFiles = true;
cp.IncludeDebugInformation = true;
}
//cp.GenerateExecutable = true;
cp.ReferencedAssemblies.Add(target.Type.Assembly.Location);
cp.ReferencedAssemblies.Add("System.dll");
cp.ReferencedAssemblies.Add("System.Core.dll");
cp.ReferencedAssemblies.Add("System.Data.dll");
cp.ReferencedAssemblies.Add("System.Xml.dll");
cp.ReferencedAssemblies.Add("System.Xml.Linq.dll");
cp.ReferencedAssemblies.Add(typeof(DbAccessLayer).Assembly.Location);
foreach (var defaultNamespace in settings.DefaultNamespaces)
{
generator.NamespaceImports.Add(defaultNamespace);
}
foreach (
var additionalNamespace in
target.Attributes.Where(f => f.Attribute is AutoGenerateCtorNamespaceAttribute)
.Select(f => f.Attribute as AutoGenerateCtorNamespaceAttribute))
{
generator.NamespaceImports.Add(additionalNamespace.UsedNamespace);
}
var provider = new CSharpCodeProvider();
var compileAssemblyFromDom =
provider.CompileAssemblyFromSource(cp, generator.RenderPocoClass());
if (compileAssemblyFromDom.Errors.Count > 0 && !settings.EnforceCreation)
{
var sb = new StringBuilder(string.Format("There are {0} errors due compilation.",
compileAssemblyFromDom.Errors.Count));
var errNr = 0;
foreach (CompilerError error in compileAssemblyFromDom.Errors)
{
sb.AppendLine(errNr++ + error.ErrorNumber + ":" + error.Column + "," + error.Line + " -> " + error.ErrorText);
}
var ex =
new InvalidDataException(sb.ToString());
ex.Data.Add("Object", compileAssemblyFromDom);
throw ex;
}
var compiledAssembly = compileAssemblyFromDom.CompiledAssembly;
targetType = compiledAssembly.DefinedTypes.First();
constructorInfos = targetType.GetConstructors();
if (!constructorInfos.Any())
{
if (settings.EnforceCreation)
{
return(null);
}
var ex =
new InvalidDataException("There are was an unknown error due compilation. No CTOR was build");
ex.Data.Add("Object", compileAssemblyFromDom);
foreach (CompilerError error in compileAssemblyFromDom.Errors)
{
ex.Data.Add(error.ErrorNumber, error);
}
throw ex;
}
}
var matchingCtor = constructorInfos.FirstOrDefault(s =>
{
var param = s.GetParameters();
if (param.Length < 1)
{
return(false);
}
if (param.First().ParameterType != typeof(EagarDataRecord))
{
return(false);
}
return(true);
});
var dm = new DynamicMethod("Create" + target.Name.Split('.')[0], target.Type, new[] { typeof(IDataRecord) },
target.Type, true);
var il = dm.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Newobj, matchingCtor ?? throw new InvalidOperationException());
il.Emit(OpCodes.Ret);
if (!settings.CreateDebugCode)
{
foreach (string tempFile in cp.TempFiles)
{
if (!tempFile.EndsWith("dll") && !tempFile.EndsWith("pdb"))
{
File.Delete(tempFile);
}
}
}
var func = (Func <IDataRecord, object>)dm.CreateDelegate(typeof(Func <IDataRecord, object>));
return(func);
}
internal static Func <IDataRecord, object> CreateFactory(
DbClassInfoCache target,
FactoryHelperSettings settings)
{
var generator = ClassInfoGenerator.SuperClass(target);
generator.Namespace = target.Type.Namespace;
if (target.Constructors.Any(f => f.Arguments.Any()))
{
throw new TypeAccessException(
string.Format("Target type '{0}' does not define an public not " +
"parameterizable constructor. POCO's!!!!", target.Name));
}
//var cp = new CompilerParameters();
//cp.GenerateInMemory = true;
//var callingAssm = Assembly.GetEntryAssembly();
//if (callingAssm == null)
//{
// callingAssm = Assembly.GetExecutingAssembly();
//}
//if (settings.CreateDebugCode)
//{
// cp.TempFiles = new TempFileCollection(Path.GetDirectoryName(callingAssm.Location), true);
// cp.GenerateInMemory = false;
// cp.TempFiles.KeepFiles = true;
// cp.IncludeDebugInformation = true;
//}
var references = new List <string>();
references.Add(target.Type.Assembly.Location);
#if NETFULL
references.Add("System.dll");
references.Add("System.Core.dll");
references.Add("System.Data.dll");
references.Add("System.Xml.dll");
references.Add("System.Xml.Linq.dll");
#elif NETCORE
#endif
references.Add(typeof(DbAccessLayer).Assembly.Location);
foreach (var defaultNamespace in settings.DefaultNamespaces)
{
generator.NamespaceImports.Add(defaultNamespace);
}
foreach (
var additionalNamespace in
target.Attributes.Where(f => f.Attribute is AutoGenerateCtorNamespaceAttribute)
.Select(f => f.Attribute as AutoGenerateCtorNamespaceAttribute))
{
generator.NamespaceImports.Add(additionalNamespace.UsedNamespace);
}
var syntaxTree = CSharpSyntaxTree.ParseText(generator.RenderPocoClass(), new CSharpParseOptions(LanguageVersion.Latest, DocumentationMode.None, SourceCodeKind.Regular));
using (var assemblyStream = new MemoryStream())
{
EmitResult compileAssemblyFromDom;
try
{
var cSharpCompilation = CSharpCompilation.Create(target.Type.FullName
+ "_Poco.dll",
new[] { syntaxTree },
_defaultReferences.Concat(new MetadataReference[]
{
MetadataReference.CreateFromFile(target.Type.Assembly.Location),
}),
new CSharpCompilationOptions(OutputKind.DynamicallyLinkedLibrary));
cSharpCompilation = cSharpCompilation.AddReferences();
compileAssemblyFromDom = cSharpCompilation
.Emit(assemblyStream);
}
catch (Exception e)
{
Console.WriteLine(e);
throw;
}
finally
{
}
if (!compileAssemblyFromDom.Success)
{
var sb = new StringBuilder(string.Format("There are {0} errors due compilation.",
compileAssemblyFromDom.Diagnostics.Length));
var errNr = 0;
foreach (var error in compileAssemblyFromDom.Diagnostics)
{
sb.AppendLine(errNr++ + error.Id + ":" + error.Location.GetLineSpan() + " -> " + error.GetMessage());
}
var ex =
new InvalidDataException(sb.ToString());
ex.Data.Add("Object", compileAssemblyFromDom);
throw ex;
}
var compiledAssembly = Assembly.Load(assemblyStream.ToArray());
var targetType = compiledAssembly.DefinedTypes.First();
var constructorInfos = targetType.GetConstructors();
if (!constructorInfos.Any())
{
if (settings.EnforceCreation)
{
return(null);
}
var ex =
new InvalidDataException("There are was an unknown error due compilation. No CTOR was build");
ex.Data.Add("Object", compileAssemblyFromDom);
for (var index = 0; index < compileAssemblyFromDom.Diagnostics.Length; index++)
{
var error = compileAssemblyFromDom.Diagnostics[index];
ex.Data.Add(index, error);
}
throw ex;
}
var matchingCtor = constructorInfos.FirstOrDefault(s =>
{
var param = s.GetParameters();
if (param.Length < 1)
{
return(false);
}
if (param.First().ParameterType != typeof(EagarDataRecord))
{
return(false);
}
return(true);
});
matchingCtor = matchingCtor ?? throw new InvalidOperationException(
$"Could not find a matching constructor \".ctor(EagarDataRecord record)\" on \"{targetType}\"");
return((record) => matchingCtor.Invoke(new object[] { record }));
//var dm = new DynamicMethod("Create" + target.Name.Split('.')[0], target.Type, new[] { typeof(IDataRecord) },
// target.Type, true);
//var il = dm.GetILGenerator();
//il.Emit(OpCodes.Ldarg_0);
//il.Emit(OpCodes.Newobj, matchingCtor ?? throw new InvalidOperationException());
//il.Emit(OpCodes.Ret);
//if (!settings.CreateDebugCode)
//{
// foreach (string tempFile in cp.TempFiles)
// {
// if (!tempFile.EndsWith("dll") && !tempFile.EndsWith("pdb"))
// {
// File.Delete(tempFile);
// }
// }
//}
//var func = (Func<IDataRecord, object>)dm.CreateDelegate(typeof(Func<IDataRecord, object>));
//return func;
}
}