/// <summary>
/// We only get here if a navigation property getter returns null. In this case, we try to set the
/// navigation property to some collection that will work.
/// </summary>
private static Func <object> CreateCollectionCreateDelegate(Type entityType, Type navigationPropertyType, string propName)
{
var typeToInstantiate = EntityUtil.DetermineCollectionType(navigationPropertyType);
if (typeToInstantiate == null)
{
throw new EntityException(System.Data.Entity.Strings.PocoEntityWrapper_UnableToMaterializeArbitaryNavPropType(propName, navigationPropertyType));
}
return(Expression.Lambda <Func <object> >(Expression.New(typeToInstantiate)).Compile());
}
private static Func <object> CreateCollectionCreateDelegate(
Type navigationPropertyType,
string propName)
{
Type collectionType = EntityUtil.DetermineCollectionType(navigationPropertyType);
if (collectionType == (Type)null)
{
throw new EntityException(Strings.PocoEntityWrapper_UnableToMaterializeArbitaryNavPropType((object)propName, (object)navigationPropertyType));
}
return(Expression.Lambda <Func <object> >((Expression)DelegateFactory.GetNewExpressionForCollectionType(collectionType), new ParameterExpression[0]).Compile());
}