public ObjectDataRecord(object poco, DbConfig config, int depth)
{
_poco = poco;
_config = config;
Depth = depth;
_classTypeCache = config.GetOrCreateClassInfoCache(poco.GetType());
RecordsAffected = -1;
FieldCount = _classTypeCache.Propertys.Count;
}
internal QueryLazyEnumerator(IQueryContainer queryContainer, Type type)
{
_type = queryContainer.AccessLayer.GetClassInfo(type);
_accessLayer = new DbAccessLayer(queryContainer.AccessLayer.Database);
_accessLayer.Database.Connect(IsolationLevel.ReadCommitted);
var command = queryContainer.Compile();
queryContainer.AccessLayer.RaiseSelect(command);
_executeReader = command.ExecuteReader();
}
internal XmlDataRecord(string xmlStream, DbClassInfoCache target)
{
_target = target;
if (string.IsNullOrEmpty(xmlStream))
{
baseElement = new XElement("faild");
return;
}
baseElement = XDocument.Parse(xmlStream).Elements().ElementAt(0);
}
/// <summary>
/// Generates a Function with a Full ado.net constructor beavior.
/// It Creates a new Instance of <param name="target"></param> and then fills all public properties
/// </summary>
/// <param name="target"></param>
/// <param name="settings"></param>
/// <param name="importNameSpace"></param>
/// <returns></returns>
public static CodeMemberMethod GenerateFactory(DbClassInfoCache target, FactoryHelperSettings settings, CodeNamespace importNameSpace)
{
var codeFactory = GenerateTypeConstructor(true);
var super = new CodeVariableReferenceExpression("super");
var pocoVariable = new CodeVariableDeclarationStatement(target.Type, "super");
codeFactory.Statements.Add(pocoVariable);
var codeAssignment = new CodeAssignStatement(super, new CodeObjectCreateExpression(target.Type));
codeFactory.Statements.Add(codeAssignment);
GenerateBody(target, settings, importNameSpace, codeFactory, super);
codeFactory.ReturnType = new CodeTypeReference(target.Type);
codeFactory.Statements.Add(new CodeMethodReturnStatement(super));
return codeFactory;
}
public void Dispose()
{
this._classTypeCache = null;
}
/// <summary>
/// Creates a new Instance based on possible Ctor's and the given
/// <paramref name="reader" />
/// </summary>
/// <returns></returns>
public object SetPropertysViaReflection(DbClassInfoCache type, IDataRecord reader, DbAccessType? accessType)
{
return type.SetPropertysViaReflection(reader, DbAccessType, Config);
}
internal XmlDataRecord(XDocument baseElement, DbClassInfoCache target)
{
_target = target;
this.baseElement = baseElement.Elements().ElementAt(0);
}
/// <summary>
/// Maps propertys to database of given type
/// </summary>
/// <returns></returns>
internal static IEnumerable <string> CreatePropertyNames(DbClassInfoCache type, bool ignorePk = false)
{
return(ignorePk ? FilterDbSchemaMapping(type, type.PrimaryKeyProperty.DbName) : FilterDbSchemaMapping(type));
}
/// <summary>
/// Anonymous type check by naming convention
/// </summary>
/// <returns></returns>
internal static bool IsAnonymousType(this DbClassInfoCache type)
{
//http://stackoverflow.com/questions/1650681/determining-whether-a-type-is-an-anonymous-type
return(type.Type.Namespace == null);
}
///// <summary>
///// Creates a Strong typed query that awaits a Result
///// </summary>
///// <returns></returns>
//public RootQuery Query(Type targetType)
//{
// return new RootQuery(this, targetType);
//}
///// <summary>
///// Creates a Strong typed query that awaits a Result
///// </summary>
///// <returns></returns>
//public RootQuery Query<T>()
//{
// return new RootQuery(this, typeof(T));
//}
/// <summary>
/// Creates a new Instance based on possible Ctor's and the given
/// <paramref name="reader" />
/// </summary>
/// <returns></returns>
public object SetPropertysViaReflection(DbClassInfoCache type, IDataRecord reader)
{
return SetPropertysViaReflection(type, reader, DbAccessType);
}
/// <summary>
/// Generates a Constructor with a Full Ado.Net constructor
/// </summary>
/// <param name="target"></param>
/// <param name="settings"></param>
/// <param name="importNameSpace"></param>
/// <returns></returns>
public static CodeMemberMethod GenerateConstructor(DbClassInfoCache target, FactoryHelperSettings settings, CodeNamespace importNameSpace)
{
var codeConstructor = GenerateTypeConstructor();
GenerateBody(target, settings, importNameSpace, codeConstructor, new CodeBaseReferenceExpression());
return codeConstructor;
}
/// <summary>
/// Maps all propertys of
/// <paramref name="type" />
/// into the Database columns
/// </summary>
/// <returns></returns>
internal static IEnumerable <string> FilterDbSchemaMapping(this DbClassInfoCache type, params string[] ignore)
{
return(type.LocalToDbSchemaMapping().Where(f => !ignore.Contains(f)));
}
public static void GenerateBody(DbClassInfoCache sourceType,
FactoryHelperSettings settings,
CodeNamespace importNameSpace,
CodeMemberMethod container,
CodeExpression target)
{
GenerateBody(sourceType.Propertys, settings, importNameSpace, container, target);
}
internal IEnumerable EnumerateDataRecords(IDbCommand query, bool direct, DbClassInfoCache type)
{
if (direct)
{
return EnumerateDataRecords(query)
.Select(f => SetPropertysViaReflection(type, f))
.ToArray();
}
else
{
return EnumerateDirectDataRecords(query, type);
}
}
public static object ReflectionPropertySet(
DbConfig config,
object instance,
DbClassInfoCache info,
IDataRecord reader,
Dictionary<int, DbPropertyInfoCache> cache,
DbAccessType? dbAccessType)
{
if (instance == null) throw new ArgumentNullException("instance");
if (info == null) throw new ArgumentNullException("info");
if (reader == null)
return instance;
//Left c# property name and right the object to read from the reader
//var listofpropertys = new Dictionary<string, object>();
var propertys = info.Propertys.ToArray();
var instanceOfFallbackList = new Dictionary<string, object>();
if (cache == null)
{
cache = new Dictionary<int, DbPropertyInfoCache>();
for (var i = 0; i < reader.FieldCount; i++)
{
DbPropertyInfoCache val = null;
info.Propertys.TryGetValue(info.SchemaMappingDatabaseToLocal(reader.GetName(i)), out val);
cache.Add(i, val);
}
}
for (var i = 0; i < reader.FieldCount; i++)
{
var property = cache[i];
var value = reader.GetValue(i);
if (property != null)
{
var attributes = property.Attributes;
var valueConverterAttributeModel =
attributes.FirstOrDefault(s => s.Attribute is ValueConverterAttribute);
//Should the SQL value be converted
if (valueConverterAttributeModel != null)
{
var converter = valueConverterAttributeModel.Attribute as ValueConverterAttribute;
//Create the converter and then convert the value before everything else
var valueConverter = converter.CreateConverter();
value = valueConverter.Convert(value, property.PropertyInfo.PropertyType, converter.Parameter,
CultureInfo.CurrentCulture);
}
var xmlAttributeModel =
attributes.FirstOrDefault(s => s.Attribute is FromXmlAttribute);
//should the Content be considerd as XML text?
if (xmlAttributeModel != null)
{
//Get the XML text and check if its null or empty
var xmlStream = value.ToString();
if (string.IsNullOrEmpty(xmlStream))
{
continue;
}
//Check for List
//if this is a list we are expecting other entrys inside
if (property.CheckForListInterface())
{
//target Property is of type list
//so expect a xml valid list Take the first element and expect the propertys inside this first element
var record = XmlDataRecord.TryParse(xmlStream,
property.PropertyInfo.PropertyType.GetGenericArguments().FirstOrDefault(), false, config);
var xmlDataRecords = record.CreateListOfItems();
var genericArguments =
config.GetOrCreateClassInfoCache(property.PropertyInfo.PropertyType.GetGenericArguments().FirstOrDefault());
var enumerableOfItems =
xmlDataRecords.Select(
s => DbAccessLayerHelper.SetPropertysViaReflection(genericArguments, s, dbAccessType, config)).ToList();
object castedList;
if (genericArguments.Type.IsClass && genericArguments.Type.GetInterface("INotifyPropertyChanged") != null)
{
var caster =
typeof(DbCollection<>).MakeGenericType(genericArguments.Type).GetConstructor(new[] {typeof(IEnumerable)});
Debug.Assert(caster != null, "caster != null");
castedList = caster.Invoke(new object[] {enumerableOfItems});
}
else
{
var caster =
typeof(NonObservableDbCollection<>).MakeGenericType(genericArguments.Type)
.GetConstructor(new[] {typeof(IEnumerable)});
Debug.Assert(caster != null, "caster != null");
castedList = caster.Invoke(new object[] {enumerableOfItems});
}
property.Setter.Invoke(instance, castedList);
}
else
{
var classInfo = config.GetOrCreateClassInfoCache(property
.PropertyInfo
.PropertyType);
var xmlDataRecord = XmlDataRecord.TryParse(xmlStream, property.PropertyInfo.PropertyType, true, config);
//the t
var xmlSerilizedProperty = DbAccessLayerHelper.SetPropertysViaReflection(classInfo, xmlDataRecord, dbAccessType,
config);
property.Setter.Invoke(instance, xmlSerilizedProperty);
}
}
else if (value is DBNull || value == null)
{
property.Setter.Invoke(instance, new object[] {null});
}
else
{
object changedType;
if (value.GetType() != property.PropertyInfo.PropertyType)
{
changedType = DataConverterExtensions.ChangeType(value, property.PropertyInfo.PropertyType);
}
else
{
changedType = value;
}
property.Setter.Invoke(instance, changedType);
}
}
//This variable is null if we tried to find a property with the LoadNotImplimentedDynamicAttribute but did not found it
else if (instanceOfFallbackList != null)
{
//no property found Look for LoadNotImplimentedDynamicAttribute property to include it
if (instanceOfFallbackList.Any())
{
instanceOfFallbackList.Add(reader.GetName(i), value);
}
else
{
var maybeFallbackProperty =
propertys.FirstOrDefault(
s => s.Value.Attributes.Any(e => e.Attribute is LoadNotImplimentedDynamicAttribute));
if (maybeFallbackProperty.Value != null)
{
instanceOfFallbackList = (Dictionary<string, object>) maybeFallbackProperty.Value.Getter.Invoke(instance);
if (instanceOfFallbackList == null)
{
instanceOfFallbackList = new Dictionary<string, object>();
maybeFallbackProperty.Value.Setter.Invoke(instance, instanceOfFallbackList);
}
instanceOfFallbackList.Add(reader.GetName(i), value);
}
else
{
instanceOfFallbackList = null;
}
}
}
}
//foreach (var item in listofpropertys)
//{
// var property = propertys.FirstOrDefault(s => s.PropertyName == item.Key);
//}
if (reader is EgarDataRecord)
{
(reader as IDisposable).Dispose();
}
return instance;
}
/// <summary>
/// Creates an instance based on a Ctor injection or Reflection loading
/// or when using a MsCoreLib type direct enumeration
/// </summary>
/// <returns></returns>
public static object CreateInstance(DbClassInfoCache classInfo,
IDataRecord reader,
out bool fullLoaded,
DbAccessType? accessType = null)
{
if (classInfo.Type.Assembly == MsCoreLibAssembly && reader.FieldCount == 1)
{
fullLoaded = true;
return reader.GetValue(0);
}
if (classInfo.Factory != null)
{
fullLoaded = classInfo.FullFactory;
return classInfo.Factory(reader);
}
var objectFactorys = classInfo.Constructors.Where(s =>
s.Arguments.Count == 1
&& s.Arguments.First().Type == typeof(IDataRecord))
.ToArray();
var constructor = objectFactorys.FirstOrDefault(s =>
s.Attributes.Any(f =>
f.Attribute is ObjectFactoryMethodAttribute
&& (!accessType.HasValue || ((ObjectFactoryMethodAttribute) f.Attribute).TargetDatabase == accessType.Value)));
if (constructor == null)
constructor = objectFactorys.FirstOrDefault();
//maybe single ctor with param
if (constructor != null)
{
if (constructor.Arguments.Count == 1 && constructor.Arguments.First().Type == typeof(IDataRecord))
{
classInfo.FullFactory = true;
classInfo.Factory = s => constructor.Invoke(new object[] {s});
return CreateInstance(classInfo, reader, out fullLoaded, accessType);
}
}
else
{
//check for a Factory mehtod
var factory =
classInfo.Mehtods
.FirstOrDefault(s => s.Attributes.Any(f => f.Attribute is ObjectFactoryMethodAttribute));
if (factory != null)
{
if (factory.MethodInfo.IsStatic)
{
var methodInfo = factory.MethodInfo as MethodInfo;
if (methodInfo != null)
{
var returnType = methodInfo.ReturnParameter;
if (returnType != null && returnType.ParameterType == classInfo.Type)
{
if (factory.Arguments.Count == 1 &&
factory.Arguments.First().Type == typeof(IDataRecord))
{
classInfo.FullFactory = true;
classInfo.Factory = s => factory.Invoke(new object[] {reader});
return CreateInstance(classInfo, reader, out fullLoaded, accessType);
}
}
}
}
}
}
var emptyCtor = classInfo.Constructors.FirstOrDefault(f => !f.Arguments.Any());
if (emptyCtor == null)
{
throw new NotSupportedException(
"You have to define ether an ObjectFactoryMethod as static or constructor with and IDataReader or an constructor without any arguments");
}
classInfo.FullFactory = false;
classInfo.Factory = s => emptyCtor.Invoke(new object[0]);
return CreateInstance(classInfo, reader, out fullLoaded, accessType);
}
/// <summary>
/// Creates a new Instance based on possible Ctor's and the given
/// <paramref name="reader" />
/// </summary>
/// <returns></returns>
public object SetPropertysViaReflection(DbClassInfoCache type, IDataRecord reader,
Dictionary<int, DbPropertyInfoCache> mapping)
{
bool created;
var source = CreateInstance(type, reader, out created);
if (created)
return source;
#pragma warning disable 618
return ReflectionPropertySet(Config, source, type, reader, mapping, DbAccessType);
#pragma warning restore 618
}
internal static Func<IDataRecord, object> CreateFactory(DbClassInfoCache target, FactoryHelperSettings settings)
{
var classCtorAttr =
target.Attributes.First(s => s.Attribute is AutoGenerateCtorAttribute).Attribute as
AutoGenerateCtorAttribute;
CodeNamespace importNameSpace;
importNameSpace = new CodeNamespace(target.Type.Namespace);
var cp = new CompilerParameters();
string superName;
var compiler = new CodeTypeDeclaration();
compiler.IsClass = true;
var generateFactory = target.Type.IsSealed || classCtorAttr.CtorGeneratorMode == CtorGeneratorMode.FactoryMethod;
CodeMemberMethod codeConstructor;
var codeName = target.Name.Split('.').Last();
if (generateFactory)
{
codeConstructor = GenerateFactory(target, settings, importNameSpace);
superName = codeName + "_Factory";
compiler.Attributes = MemberAttributes.Static;
}
else
{
compiler.BaseTypes.Add(target.Type);
codeConstructor = GenerateConstructor(target, settings, importNameSpace);
compiler.IsPartial = true;
superName = codeName + "_Super";
}
if (target.Constructors.Any(f => f.Arguments.Any()))
{
throw new TypeAccessException(string.Format("Target type '{0}' does not define an public parametherless constructor. POCO's!!!!", target.Name));
}
compiler.Attributes |= MemberAttributes.Public;
compiler.Name = superName;
compiler.Members.Add(codeConstructor);
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);
Assembly compiledAssembly;
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)
{
//testing we are?
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);
var compileUnit = new CodeCompileUnit();
foreach (var defaultNamespace in settings.DefaultNamespaces)
{
importNameSpace.Imports.Add(new CodeNamespaceImport(defaultNamespace));
}
foreach (var additionalNamespace in target.Attributes.Where(f => f.Attribute is AutoGenerateCtorNamespaceAttribute).Select(f => f.Attribute as AutoGenerateCtorNamespaceAttribute))
{
importNameSpace.Imports.Add(new CodeNamespaceImport(additionalNamespace.UsedNamespace));
}
if (classCtorAttr.FullSateliteImport)
{
foreach (var referencedAssembly in target.Type.Assembly.GetReferencedAssemblies())
{
cp.ReferencedAssemblies.Add(referencedAssembly.Name);
}
}
importNameSpace.Types.Add(compiler);
compileUnit.Namespaces.Add(importNameSpace);
var provider = new CSharpCodeProvider();
var compileAssemblyFromDom = provider.CompileAssemblyFromDom(cp, compileUnit);
if (compileAssemblyFromDom.Errors.Count > 0 && !settings.EnforceCreation)
{
var sb = new StringBuilder(string.Format("There are {0} errors due compilation.",
compileAssemblyFromDom.Errors.Count));
int 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;
}
compiledAssembly = compileAssemblyFromDom.CompiledAssembly;
targetType = compiledAssembly.DefinedTypes.First();
constructorInfos = targetType.GetConstructors();
if (!constructorInfos.Any())
{
if (settings.EnforceCreation)
return null;
var ex =
new InvalidDataException(string.Format("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 (generateFactory)
{
if (param.Length < 1)
return false;
if (param.First().ParameterType != typeof(IDataRecord))
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();
if (generateFactory)
{
il.Emit(OpCodes.Nop);
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, targetType.GetMethod("Factory"));
il.Emit(OpCodes.Ret);
}
else
{
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Newobj, matchingCtor);
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 IEnumerable EnumerateDirectDataRecords(IDbCommand query,
DbClassInfoCache info)
{
return Database.Run(
s =>
{
//Skip enumeration and parsing and make a Direct loading
//This increeses Performance
var records = new ArrayList();
using (var dr = query.ExecuteReader())
{
try
{
do
{
while (dr.Read())
{
records.Add(SetPropertysViaReflection(info, dr));
}
} while (dr.NextResult());
}
finally
{
dr.Close();
}
}
return records;
});
}
public AnonymousClass(DbClassInfoCache classInfo, WeakReference reference)
{
ClassInfo = classInfo;
Reference = reference;
Objects = new HashSet <AnonymousObject>();
}
/// <summary>
/// Returns all Propertys that can be loaded due reflection
/// </summary>
/// <returns></returns>
public static string CreatePropertyCsv(this DbClassInfoCache type, bool ignorePk = false)
{
return(CreatePropertyNames(type, ignorePk).Aggregate((e, f) => e + ", " + f));
}
