public static dynamic TryGetProperty(dynamic dynamicObject, String PropertyName, dynamic Default)
{
try
{
if (!HasProperty(dynamicObject, PropertyName))
{
return(Default);
}
if (dynamicObject.GetType() == typeof(System.Web.Helpers.DynamicJsonObject))
{
// good thing this type of documentation was easy to find
System.Web.Helpers.DynamicJsonObject obj = (System.Web.Helpers.DynamicJsonObject)dynamicObject;
Type scope = obj.GetType();
System.Dynamic.IDynamicMetaObjectProvider provider = obj as System.Dynamic.IDynamicMetaObjectProvider;
if (provider != null)
{
System.Linq.Expressions.ParameterExpression param = System.Linq.Expressions.Expression.Parameter(typeof(object));
System.Dynamic.DynamicMetaObject mobj = provider.GetMetaObject(param);
System.Dynamic.GetMemberBinder binder = (System.Dynamic.GetMemberBinder)Microsoft.CSharp.RuntimeBinder.Binder.GetMember(0, PropertyName, scope, new Microsoft.CSharp.RuntimeBinder.CSharpArgumentInfo[] { Microsoft.CSharp.RuntimeBinder.CSharpArgumentInfo.Create(0, null) });
System.Dynamic.DynamicMetaObject ret = mobj.BindGetMember(binder);
System.Linq.Expressions.BlockExpression final = System.Linq.Expressions.Expression.Block(
System.Linq.Expressions.Expression.Label(System.Runtime.CompilerServices.CallSiteBinder.UpdateLabel),
ret.Expression
);
System.Linq.Expressions.LambdaExpression lambda = System.Linq.Expressions.Expression.Lambda(final, param);
Delegate del = lambda.Compile();
return(del.DynamicInvoke(obj));
}
else
{
return(obj.GetType().GetProperty(PropertyName, System.Reflection.BindingFlags.Public | System.Reflection.BindingFlags.Instance).GetValue(obj, null));
}
}
else if (dynamicObject.GetType() == typeof(System.Collections.IDictionary))
{
return((Dictionary <String, object>)dynamicObject[PropertyName]);
}
return(Default);
}
catch (Exception ex)
{
throw new Exception("Could not determine if dynamic object has property.", ex);
}
}
public void Should_filter_a_list_of_dynamic_types()
{
dynamic expando = new System.Dynamic.ExpandoObject();
expando.Foo = "Bar";
var enumerable =
new System.Dynamic.IDynamicMetaObjectProvider[] { expando };
var data = QueryableFactory.CreateQueryable(enumerable)
.Where(new[] { new FilterDescriptor
{
Member = "Foo",
Operator = FilterOperator.IsEqualTo,
Value = "Bar"
} }
);
Assert.NotNull(data.ElementAt(0));
}
public void Should_filter_a_list_of_dynamic_types()
{
dynamic expando = new System.Dynamic.ExpandoObject();
expando.Foo = "Bar";
var enumerable =
new System.Dynamic.IDynamicMetaObjectProvider[] { expando };
var data = QueryableFactory.CreateQueryable(enumerable)
.Where(new[] { new FilterDescriptor
{
Member = "Foo",
Operator = FilterOperator.IsEqualTo,
Value = "Bar"
}
}
);
Assert.NotNull(data.ElementAt(0));
}
public IObjectReader GetObjectReader(System.Dynamic.IDynamicMetaObjectProvider dynamicProvider)
{
return(new SafeObjectReader(new JilDynamicObjectReader(dynamicProvider)));
}
