// <summary>
// Construct an interception delegate for the specified proxy member.
// </summary>
// <param name="member"> EdmMember that specifies the member to be intercepted. </param>
// <param name="proxyType"> Type of the proxy. </param>
private static void InterceptMember(EdmMember member, Type proxyType, EntityProxyTypeInfo proxyTypeInfo)
{
var property = proxyType.GetTopProperty(member.Name);
Debug.Assert(
property != null,
String.Format(
CultureInfo.CurrentCulture, "Expected property {0} to be defined on proxy type {1}", member.Name, proxyType.FullName));
var interceptorField = proxyType.GetField(
LazyLoadImplementor.GetInterceptorFieldName(member.Name),
BindingFlags.DeclaredOnly | BindingFlags.Static | BindingFlags.NonPublic);
Debug.Assert(
interceptorField != null,
String.Format(
CultureInfo.CurrentCulture, "Expected interceptor field for property {0} to be defined on proxy type {1}", member.Name,
proxyType.FullName));
var interceptorDelegate = GetInterceptorDelegateMethod.
MakeGenericMethod(proxyType, property.PropertyType).
Invoke(null, new object[] { member, proxyTypeInfo.EntityWrapperDelegate }) as Delegate;
AssignInterceptionDelegate(interceptorDelegate, interceptorField);
}
public ProxyTypeBuilder(ClrEntityType ospaceEntityType)
{
_ospaceEntityType = ospaceEntityType;
_baseImplementor = new BaseProxyImplementor();
_ipocoImplementor = new IPocoImplementor(ospaceEntityType);
_lazyLoadImplementor = new LazyLoadImplementor(ospaceEntityType);
_dataContractImplementor = new DataContractImplementor(ospaceEntityType);
_iserializableImplementor = new SerializableImplementor(ospaceEntityType);
}
private static void InterceptMember(
EdmMember member,
Type proxyType,
EntityProxyTypeInfo proxyTypeInfo)
{
PropertyInfo topProperty = proxyType.GetTopProperty(member.Name);
FieldInfo field = proxyType.GetField(LazyLoadImplementor.GetInterceptorFieldName(member.Name), BindingFlags.DeclaredOnly | BindingFlags.Static | BindingFlags.NonPublic);
EntityProxyFactory.AssignInterceptionDelegate(EntityProxyFactory.GetInterceptorDelegateMethod.MakeGenericMethod(proxyType, topProperty.PropertyType).Invoke((object)null, new object[2]
{
(object)member,
(object)proxyTypeInfo.EntityWrapperDelegate
}) as Delegate, field);
}
public bool EmitMember(
TypeBuilder typeBuilder,
EdmMember member,
PropertyBuilder propertyBuilder,
PropertyInfo baseProperty,
BaseProxyImplementor baseImplementor)
{
if (!this._members.Contains(member))
{
return(false);
}
MethodInfo meth = baseProperty.Getter();
MethodAttributes methodAttributes = meth.Attributes & MethodAttributes.MemberAccessMask;
Type type = typeof(Func <, ,>).MakeGenericType((Type)typeBuilder, baseProperty.PropertyType, typeof(bool));
MethodInfo method = TypeBuilder.GetMethod(type, typeof(Func <, ,>).GetOnlyDeclaredMethod("Invoke"));
FieldBuilder fieldBuilder = typeBuilder.DefineField(LazyLoadImplementor.GetInterceptorFieldName(baseProperty.Name), type, FieldAttributes.Private | FieldAttributes.Static);
MethodBuilder mdBuilder = typeBuilder.DefineMethod("get_" + baseProperty.Name, methodAttributes | MethodAttributes.Virtual | MethodAttributes.HideBySig | MethodAttributes.SpecialName, baseProperty.PropertyType, Type.EmptyTypes);
ILGenerator ilGenerator = mdBuilder.GetILGenerator();
Label label = ilGenerator.DefineLabel();
ilGenerator.DeclareLocal(baseProperty.PropertyType);
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Call, meth);
ilGenerator.Emit(OpCodes.Stloc_0);
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldfld, (FieldInfo)fieldBuilder);
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Ldloc_0);
ilGenerator.Emit(OpCodes.Callvirt, method);
ilGenerator.Emit(OpCodes.Brtrue_S, label);
ilGenerator.Emit(OpCodes.Ldarg_0);
ilGenerator.Emit(OpCodes.Call, meth);
ilGenerator.Emit(OpCodes.Ret);
ilGenerator.MarkLabel(label);
ilGenerator.Emit(OpCodes.Ldloc_0);
ilGenerator.Emit(OpCodes.Ret);
propertyBuilder.SetGetMethod(mdBuilder);
baseImplementor.AddBasePropertyGetter(baseProperty);
return(true);
}
public ProxyTypeBuilder(ClrEntityType ospaceEntityType)
{
_ospaceEntityType = ospaceEntityType;
_baseImplementor = new BaseProxyImplementor();
_ipocoImplementor = new IPOCOImplementor(ospaceEntityType);
_lazyLoadImplementor = new LazyLoadImplementor(ospaceEntityType);
_dataContractImplementor = new DataContractImplementor(ospaceEntityType);
_iserializableImplementor = new SerializableImplementor(ospaceEntityType);
}
